Description:FIELD OF THE INVENTION

The present invention has a parent/main patent application number 202211053248 dated 17.09.2022. The present invention relates to an improved/modified compact shieldless projection optical system and method thereof. Further, the improved compact shieldless optical system provides a single manifold for reflector and condenser lens to improve and optimize overall luminous efficiency projected onto road surface and simplify manufacturing/assembly and increase precision.

BACKGROUND OF THE INVENTION

An optical system usually comprises one or more components which are used for reflection or refraction of the light rays to produce a desired effect. These optical systems are primarily employed in an automobile/vehicle that illuminates road surface. Generally, optical systems uses elliptical shaped reflector along with a shield to produce low beam from the optical system. In such type of arrangement, there is a phenomenon of loss of light rays and loss of flux from the optical system, as the light reflected by the reflector was majorly absorbed by the shield.
Another problem associated with conventional optical system is its high cost due to presence of numerous optical elements. Further, optical elements are placed at a far distance in the conventional optical system. As a result, there is an increase in the overall dimension of the conventional optical system. Further, the conventional optical system projects light beam whose focal point is present in between reflector and condenser lens. Thus, considerable distance needs to be maintained between them to achieve high photometric efficiency for projected light beam from an automobile. Due to this, large space is required for placing optical elements in the conventional system, wherein automobile such as two-wheeler or three-wheeler suffers from space limitation. This also causes bulkiness/ additional weight in an automobile which is undesirable.
Also, the arrangement available in conventional optical system has presence of the shield which absorbs fraction of light rays because of which projected low beam has low photometric efficiency. Further, requirement of shield is important for projecting low beam. Thus, the low photometric efficient projected light beam hampers visibility of the user/driver of an automobile to see nearby objects. Hence, this is one of the major factors which leads to road accident and other such road disasters.
Various optical systems have been used in different field of the technology such as automobile, LED lighting, etc. Some of these are as follows:
US10876694 discloses a light beam projection device which comprises of a plurality of light sources, a lens whose input surface is provided with plurality of convergent optics that are domed outward and output surface has plurality of sub lenses of parabolic shape and a projection lens. The plurality of the light sources emits light rays which falls onto the lens inner surface. The input surface causes formation of virtual images because the lens input surface has plurality of convergent optics that are doomed outward. The virtual images are formed behind the light sources. The light rays from plurality of the light sources act as a secondary light source for projection lens which received light from the output surface of the lens. Since the output surface of the lens is parabolic in shape it is ensured that light rays form the virtual images are well received by the projection lens.
US ‘694 is primarily for an optical system in which plurality of virtual images are formed and since this plurality of virtual images may have an interference with each other hence necessary arrangement of optical member is required. Another disadvantage is that since virtual images are formed at a far-off distance from the lens, as a result of which the optical system is bigger in size and need more space to be fitted in the automobile.
US’ 694 is unable to project multifunctional light beam from the optical system due to which different type of light beam will require different optical system to install in an automobile thereby causing space limitation especially in two-wheeler and three-wheeler.
JP5677410B2 discloses a lighting module for an automobile which comprises of an optical member, pair of concave shaped reflectors arranged in such a way that reflected rays from them are complementary to each other, light source and a shield. The light source emits light rays which falls onto the pair of concave shaped reflector. The reflectors produce plurality of reflected rays in such a manner that reflected rays from the first reflector is focused towards the second focal point of the second reflector and the reflected rays of the second reflector is focused onto the second focal point of first reflector to avoid interference of reflected rays. The shield placed in front of the pair of the concave reflector forms a cut-off line which is further projected to the optical member in order to project low beam.
JP’410 discloses presence of a shield which absorbs fraction of reflected rays thus causing over loss of flux during low beam projection. JP’410 optical module is arranged in such a way that it is able to project low beam only from the optical member and thus fails to produce high beam and other light requirement such as fog light and the structure is bulky.
DE 102006044640 discloses a lighting unit which comprises of two light emitting diodes, a light guiding body, a socket to switch ON/OFF. LED chip as a light source emits light towards primary optic which is input surface of the light guiding body. The light guiding body has curved surface in order to provide pathways for total internal reflection of light. The output surface of the light guiding body act as a secondary optic which will project light beam. The LED light source are connected with a pair of sockets in such a way that when one light source is switch ON it provides light rays to the upper interface of the light guiding unit. In order to switch for high beam two light sources are switch ON through switching mechanism so that light rays strike at upper and lower interface of the light guiding body.
DE’640 discloses a lighting unit which has several optical elements due to which it will consume more space for installation which will be difficult in case of small size automobiles such as two-wheeler and three-wheeler.
DE’640 is unable to provide multifunctional light beam from a single optical system. Due to which projection of different types of light beams will require additional optical elements and additional optical systems hence there will be a space limitation to install it in the automobile.
Also, the conventional optical systems causes over-loss of flux which is mainly due to presence of the shield in the optical arrangement. It is also evident that large distance between optical elements causes it to be bulky. Thereby, conventional optical system requires more space to place optical elements. Accordingly, a need felt for an optical system which is far more effective, specific, efficient, compact, simple, economical and can produce multifunctional light beam. As a result, an automobile user can see the distant as well as nearby object/s clearly.
It is therefore an object of the present invention to provide an improved/modified optical system that includes a consolidated reflector and condenser lens to reduce overall size of the optical system. Additionally, there is an enhancement towards luminous efficiency for projected light beam and it simplifies manufacturing and improves precision. Such an improved optical system is compact, simple, and economical in nature. Additionally, the improved projection optical system can be used for projection of multi-functional light beam.
Accordingly, it is the principal object of the present invention to solve the aforesaid problems existing in the state of art for economic and efficient manufacturing of the optical systems with minimal manufacturing defects.

SUMMARY OF THE INVENTION
The present invention relates to an improved/modified compact shieldless projection optical system that projects multifunctional light beam with an enhancement in luminous efficiency and simplifies manufacturing and improves precision.
Further, the present invention relates to an improved/modified compact shieldless projection optical system that includes
- a plurality of light sources configured to produce light rays, and the light source is placed at overall focal point of optical system; and
- a plurality of single optical unit including a reflector and a condenser lens wherein the reflector and condenser lens are consolidated and the reflector is configured to receive light rays from the light source to form a virtual image at its rear end, and the condenser lens is configured to receive light rays from the virtual image to form directed light rays projected in forward direction.
The modified shieldless projection optical system projects a light beam with an enhanced luminous efficiency.
In present invention, the improved/modified compact shieldless projection optical system comprises of optical elements such as a light source, a consolidated/single optical unit/manifold including a reflector and a condenser lens. Further, the light source provides light rays that falls onto inner reflective surface of reflector. The reflector forms reflected light rays and forms a virtual image at rear region of the reflector. Such virtual image acts as a virtual light source for condenser lens, wherein the condenser lens receives virtual light rays to form directed light rays. The directed light rays fall thereafter onto the condenser lens input surface and then output surface and finally forms the projected light beam which illuminates the road surface. Orientation of each optical elements is based on type of projected light beam that is required from the optical system. Further, the projection of multi-functional light beam is done through a switching mechanism.
The present invention further relates to a method of projecting low beam and/or high beam from the improved compact shieldless projection optical system which includes:
• firstly, a light source will projects a light rays towards a reflector;
• next, the reflector will form a virtual image;
• then, a directed light rays will be directed from the virtual image towards a condenser lens; and
• thereafter, a multifunctional light beam is projected from the output surface of the condenser lens.
Advantageously, the improved compact shieldless projection optical system ensures that it requires less space for installation and simple in arrangement which is achieved due to presence of single manifold reflector and condenser lens. Additionally, formation of virtual image causes considerable reduction in distance at which arrangement of the optical elements are placed. Additionally, there is an enhancement towards luminous efficiency for projected light beam and it simplifies manufacturing and improves precision. Due to this, resultant optical system is compact and much easy to install within an automobile.
Further, the arrangement of the optical elements in the improved compact shieldless projection optical system does not require shield for forming low beam. Due to elimination of the shield, fraction of reflected light rays will not be absorbed which will ensure elimination of over-loss of flux during forming of low beam. Additionally, the improved compact shieldless projection optical system will provide a clear image in the high beam. Furthermore, fog light and other types of light can be placed along with low beam and high beam optical arrangement according to requirement of the user.
The summary is provided to introduce the system as a representative concept in a simplified form that are further described below in the detailed description. This summary is not intended to limit the key essential features of the present invention nor its scope and application.
Other advantages and details about the system and the method will become more apparent to a person skilled in the art from the below detailed description of the invention when read in conjugation with the drawings.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Embodiments are described with reference to the following Figures. The same numbers may be used throughout to reference like features and components that are shown in the Figures:
Figure 1 illustrates a conventional optical system which is projecting low beam.
Figure 2 illustrates an isophotal graph of the projected low beam from the conventional optical system.
Figure 3 illustrates another example of conventional shildless optical system to project low beam.
Figure 4 illustrates an arrangement of optical units in an improved/modified compact shieldless projection optical system in accordance with an embodiment of the present invention.
Figure 5 illustrates an isophotal graph of the projected light beam from the improved/modified compact shieldless projection optical system in accordance with an embodiment of the present invention.
Figure 6 illustrates method of projecting light beam from modified shieldless projection optical system in accordance with an embodiment of the present invention.
The present invention can be understood with reference to the detailed figures and description set forth herein. Various embodiments are discussed below with reference to the figures. However, those skilled in the art will readily appreciate that the detailed descriptions given herein with respect to the figures are simply for explanation of the invention as the methods and systems may extend beyond the described embodiments. For example, the teachings presented and the needs of a particular application yield multiple alternative and suitable approaches to implement the functionality of any detail described herein. Therefore, any approach extends beyond the particular implementation choices in the following embodiments described and shown.
References to “one embodiment,” “at least one embodiment,” “an embodiment,” “one example,” “an example,” “for example,” and so on indicate that the embodiment(s) or example(s) may include a particular feature, structure, circuit, architecture, characteristic, property, element, or limitation but that not every embodiment or example necessarily includes that particular feature, circuit, architecture, structure, characteristic, property, element, or limitation. Further, repeated use of the phrase “in an embodiment” does not necessarily refer to the same embodiment.
TERMS
Low beam is defined as a type of the light beam having lower intensity and is projecting light onto the surface to make nearby object visible to the user/driver.
High beam is defined as a type of the light beam having higher intensity and is projecting light in front of the vehicle to make distant objects visible to the user/driver.
Fog lamp is defined as a type of the light beam and is placed on the front of a vehicle to help user/drive to see objects with better visibility in fog.
Virtual image is defined as the image which cannot be obtained on a screen and is formed due to divergence of light after being reflected or refracted from a mirror, lens, or object.
Optical axis is defined as characteristic direction of the overall beam propagation through the improved compact shieldless projection optical system. Further, this line characterizes the designated direction parallel with the car driving direction.
Focal plane is defined as a plane where light source is placed or where image is created. The image created on this plane can be either a virtual image or a real image.
An isophotal graph is defined as a diagram showing light distribution in the angular space expressing the intensity either by some colour pallet or lines interconnecting places with the same intensity.
DESCRIPTION
The optical system is illustrated with various embodiments to depict orientation and arrangement of optical elements to project beam from such system. In Fig. 1, an illustration of a conventional optical system (100) is represented. The conventional optical system (100) comprises of a light source (101), a reflector (102), a shield (103) and a condenser lens (104).
The light source (101) is emitting light rays from it and is placed at an angle with respect to an optical axis (105) of the conventional optical system (100). The incident light rays from the light source (101) strikes onto the surface of the reflector (102). The reflector (102) in the conventional optical system (100) is elliptical in shape and is oriented perpendicularly with respect to the optical axis (105). The reflected light rays from the reflector (102) are guided towards the shield (103) to form a cut-off line in order to produce low beam. The shield (103) is located perpendicularly with the optical axis (105) of the conventional optical system (100). The optical axis (105) is defined horizontally passing through the mid-point of the light source (101), the reflector (102), the shield (103) and the condenser lens (104).
The shield (103) absorbs fraction of reflected light rays to form low beam from the conventional optical system (100). The reflected light rays from the reflector (102) forms an image (108) which is trim of the original image formed by the reflector (102). The image (108) is formed in the focal plane of the elliptical reflector (102) which coincide with a focal plane of the condenser lens (104). The directed light rays from the shield (103) falls onto the condenser lens (104). The condenser lens (104) project these light rays in the form of low beam and is used for illumination of near-by distance of road surface.
In Fig. 2 an isophotal graph (107) is illustrated for the low beam which is projected from the conventional optical system (100). The isophotal graph (107) has a cut off line with an elbow (107a) formed at a centre of the isophotal graph (107) and the formation of cut-off line is one of the characteristics of the low beam.
In the conventional optical system (100), due to the presence of the shield (103) a fraction of reflected light rays which are travelling from the reflector (102) are lost because the shield (103) is composed of a sheet metal or other non-transparent material which has a property of absorbing or reflecting light rays. In addition, absorption of fraction of reflected light rays causes over-loss of flux during low beam projection from the convention optical system (100).
Orientation and placing of shield (103) is required for forming cut-off line in low beam. Thus, such conventional system requires the shield without which low beam cannot be projected. Hence, this result into an increase in dimension of the optical elements used in the conventional optical system (100) because of which it requires a large space for its installation. Further, large dimension of the optical elements is caused by presence of considerable distance included in between optical elements. Due to this, conventional optical system (100) suffers is bulky. However, automobile such as two-wheeler, three-wheeler suffers from limitation of space. This causes difficulty in installing such system in two-wheeler.
Another major disadvantage of the conventional optical system (100) is that photometric efficiency of low beam considerably reduces because of over loss of flux. Hence, there is a need of an invention which tackles and addresses technical limitation of conventional optical system.
Figure 3 illustrates another example of conventional shieldless optical system to project low beam. The conventional shieldless optical system (300) includes a light source (301), a collimator (303), and a condenser lens (305). Further, light rays from light source (301) falls towards surface of collimator (303). Due to this, collimated light rays forms a virtual image (307) behind the light source (301) and collimator (303). The virtual image (307) acts as virtual light source for condenser lens. Further, light rays from virtual image (307) falls towards inner surface of condenser lens (305). These rays emerge out as light beam from outer surface of condenser lens (303).
There are several limitations associated with conventional shieldless optical system (300) listed out here-in-below:
- Overall length of optical system is large due to distance between collimator and condenser lens;
- Overall weight of optical system is increased due to large distance between collimator and condenser lens;
- Large space required to install conventional shieldless optical system;
- Skilled expertise required to arrange elements within conventional shieldless optical system.
In order for effective solution, the present invention is devised that overcomes and efficiently eliminates technical issue of different conventional optical systems.
The present invention relates to an improved/modified compact shieldless projection optical system that includes
- a plurality of light sources configured to produce light rays, wherein the light source is placed at overall focal point of optical system; and
- a plurality of single optical unit including a reflector and a condenser lens wherein the reflector and condenser lens are consolidated and the reflector is configured to receive light rays from the light source to form a plurality of virtual image at its rear end, and the condenser lens is configured to receive light rays from the virtual image to form directed light rays projected in forward direction.
The modified shieldless projection optical system projects a light beam with enhanced luminous efficiency. In present invention, the improved projection optical system comprises optical elements such as light source, a consolidated/single manifold reflector, and condenser lens. Further, the light source provides light rays that falls onto inner reflective surface of reflector. The reflector forms reflected light rays and forms a virtual image at rear region of the reflector. Such virtual image acts as a virtual light source for condenser lens, wherein the condenser lens receive virtual light rays to form directed light rays. The directed light rays fall thereafter onto the condenser lens input surface and then output surface and finally forms the projected light beam which illuminates the road surface. Orientation of each optical elements is based on type of projected light beam that is required from the optical system. Further, the projection of multi-functional light beam is done through a switching mechanism.
Figure 4 illustrates an arrangement of optical units in an improved/modified compact shieldless projection optical system in accordance with an embodiment of present invention . The improved compact shieldless projection optical system ((400) comprises of a light source ((401), a reflector ((403) and a condenser lens (407) which is used in an automobile. In other embodiment, the present invention can also be used for example in theatre screen, as a logo projection device in an automobile. The elements of improved compact shieldless projection optical system (400) are arranged and oriented with respect to first focal point (402).
The light source ((401) is oriented below a focal point (402) of the improved/modified compact shieldless projection optical system (400). This ensures that light rays from light source (401) is well received by other optical units. In present modified shieldless projection optical system (400), reflector (403) and condenser lens (407) are a single manifold and is a consolidated optical unit. Light source (401) is configured to produce light rays towards the inner reflective surface of the reflector (403). In an embodiment, number of light sources used may vary in accordance with the type of projected light beam from the required from improved compact shieldless projection optical system ((400). Additionally, orientation of the light source ((401) is defined with respect to a first focal point (402) of the improved shieldless projection optical system ((400). The optical axis is an imaginary horizontal line which passes through the reflector ((403) and the mid-point of the condenser lens ((407). Preferably, the light source ((401) is oriented perpendicularly (90 degree) with respect to the optical axis of the improved compact shieldless projection optical system ((400). In other embodiments, the orientation angle of the light source (401) with respect to the first focal point (402) may vary according to the type of the projected light beam from the improved optical system ((400).
The single manifold/consolidated reflector ((403) and condenser lens (407) is placed at an angle to the light source (401) in a manner that first focal point of the consolidated unit coincides with first focal point (402) of the improved shieldless projection optical system (400). Further, reflector (403)) is configured to receive light rays from light source (401) and thus provides/forms reflected light rays. In an exemplary embodiment, number of reflectors used may vary in accordance with the type of projected light beam from the improved compact shieldless projection optical system ((400).
The reflector (403) in the improved compact shieldless projection optical system (400) forms a virtual image (405) through its reflected rays. The virtual image (405) is formed at a rear portion of the reflector (403). Further, formation of virtual image (405) is onto a second focal point (406). in such way that a second focal point of the reflector (403) coincides with a second focal point (406) of the virtual image (405). The virtual image (405) is formed at pre-determined distance from light source (401), reflector (403), and condenser lens (407). This pre-determined distance is based on type of projected light beam as required from the improved shieldless projection optical system (400). Additionally, virtual image (405) acts as a virtual light source for the condenser lens (407). The number of virtual images formed may vary in accordance with the type of projected light beam from the improved compact shieldless projection optical system ((400).
The condenser lens ((407) has an input and an output surface, wherein the input surface of the condenser lens ((407) is faced towards the reflector ((403) and is configured to receive light rays directed from virtual image ((405) and output surface (407) provides a medium for light beam projection.
Orientation of consolidated unit of reflector (403) and condenser lens (407) is in accordance with type of projected light beam. Since, the present invention has consolidated unit of reflector (403) and condenser lens (407), there is a considerable reduction in overall weight of improved compact shieldless projection optical system (400). Hence, less space is required for its installation in an automobile. Additionally, there is an enhancement towards luminous efficiency for projected light beam and it simplifies manufacturing and improves precision
The condenser lens (407) in the improved compact shieldless projection optical system (400) is composed of a material which have a low absorption for light rays in order to project a clear and a well-defined low beam having high photometric efficiency. In one embodiment, the condenser lens (407) is formed of a transparent glass. In other embodiment, the condenser lens (407) material may vary in accordance with the projected light beam from the improved compact shield-less projection optical system (400). The number of condenser lens used is one in the improved shieldless projection optical system (400). Accordingly, the number of condenser lens in the improved shieldless projection optical system (400) may vary in accordance with the projected low beam.
Figure 5 illustrates an isophotal graph of the projected light beam from the modified shieldless projection optical system in accordance with an embodiment of the present invention. The isophotal graph (500) illustrates dual projection of low beam and high beam as obtained using modified optical system (400). The present modified optical system (400) utilizes optical units arranged in such way that multifunctional light beam is projected thereby illuminating road surface. Further, the modified optical system (400) can project light beam such as low beam (501), high beam (503), and a combination of low beam-high beam (505). To achieve objective of projecting multifunctional light beam optical units are arranged in following manner:
- a light source (401) is arranged at distance from a single unit of reflector (403) and condenser lens (407);
- Consolidated reflector (403) and condenser lens (407) are arranged around imaginary overall focal point (402).
Figure 6 illustrates method of projecting light beam using an improved/modified compact shieldless projection optical system (400) in accordance with an embodiment of the present invention. The method (600) includes:
• first, at step (601), light source (401) will projects light rays towards a reflector (403). The light source (401) is placed/arranged below overall focal point (402) to ensure that light rays are well received by optical units;
• next, at step (602), the reflector (403) will form a virtual image (405). The reflector (403) is configured to ensure formation of virtual image (405) by using reflected rays. The virtual image (405) is formed at rear end of reflector (403) wherein virtual image (405) is formed at second focal point (406). The second focal point (406) lies onto first focal point (402) of modified optical system (400);
• then, at step (603), directing light rays from the virtual image (405) towards a condenser lens (407). The virtual image (405) acts as a virtual light source for condenser lens (407). Further, light rays from virtual image (405) falls onto inner surface of condenser lens (407) to form directed light rays;
• thereafter, at step (604), projecting multifunctional light beam from output surface of the condenser lens (407). The directed light rays that travels to inner surface of condenser lens (407) reaches towards output surface of condenser lens (407). The output surface of condenser lens (407) ensures projection of multifunctional light beam that ranges from low beam, high beam, and combination of low beam-high beam. The light beam isoplot graph (409) represent formation of real image using virtual image (405) formed using reflected rays from reflector (403).
Advantageously, there is a significant and substantial improvement of the present invention for reducing overall dimension of the optical system. . This is caused using a consolidated unit of reflector (403) and condenser lens (407). The improved compact shieldless projection optical system ((400)) can form plurality of the virtual images ((405) ) from which light beam is formed. Due to formation of virtual images ( (405), it is ensured that directed light rays from the focal point ((406) of virtual images ((405) to the condenser lens (407)) is coming from a far-off distance. This enables assurance towards maintaining photometric efficiency of projected light beam. Thus, enabling a clear and a well-defined image.
Due to reduction in overall dimension of the improved optical system (400) the space requirement for its installation is significantly shrink down. Since the overall size of the improved compact shieldless projection optical system ((400) ) is reduced hence there will be a reduction in weight of an automobile.
Additional, advantages of present invention are as follows:
- The overall length of present optical system is miniscule as compared to existing projection optical system;
- There is no need of shield to create any cut-off shape in the present invention;
- The overall efficiency of the system is enhanced as compared to the standard elliptical dioptre low beam module;
- The condenser lens is thinner in the present modified shieldless projection optical system;
- Enhancement towards luminous efficiency for projected light beam;
- The manufacturing of the present optical system is simplified; and
- The present optical system has improved precision in projection of light beam.
A description of an embodiment with several components in communication with each other does not imply that all such components are required. On the contrary, a variety of optional components are described to illustrate the wide variety of possible embodiments of the invention. In furtherance of this, mentioned or disclosed optical elements are in no way to be considered as limitation and may include several additional optical elements to achieve objective as stated in present invention.

A person with ordinary skills in the art will appreciate that the systems, circuit elements, modules, and sub-modules have been illustrated and explained to serve as examples and should not be considered limiting in any manner. It will be further appreciated that the variants of the above disclosed circuit elements, modules, and other features and functions, or alternatives thereof, may be combined to create other different systems or applications.
While the present disclosure has been described with reference to certain embodiments and exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the present disclosure. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the present disclosure without departing from its scope.
, Claims:We Claim:
1. An improved/modified compact shieldless projection optical system (400) for projecting multifunctional light beam that includes:

• a plurality of light source (401) configured to produce light rays, wherein the light source (401) is placed at an overall focal point of the optical system (400); and
• a plurality of single optical unit including a reflector (403) and a condenser lens (407) wherein the reflector (403) and condenser lens (407) are consolidated and the reflector (403) is configured to receive light rays from the light source (401) to form a plurality of virtual image (405) at its rear end, and the condenser lens (407) is configured to receive light rays from the virtual image (405) to form directed light rays projected in forward direction.

2. The improved optical system as claimed in claim 1, wherein orientation of light source (401), reflector (403) and condenser lens (407) is based on a first focal point (402) of the optical system (400).
3. The improved optical system as claimed in claim 1, wherein the virtual image (405) acts as a virtual light source for the condenser lens (407).
4. The improved optical system as claimed in claim 4, wherein the virtual image (405) is formed at a predetermined distance from the light source (401), reflector (403), and condenser lens (407).
5. The improved optical system as claimed in claim 4, wherein the predetermined distance for the formation of virtual image (405) is based on type of light beam projected from the optical system (400).
6. The improved optical system as claimed in claim 1, wherein the input surface of the condenser lens (407) face towards the reflector (403), and the output surface of the condenser lens (407) projects light beam.

7. A method for projecting light beam from an improved/modified compact shieldless projection optical system (400), the method (600) includes steps:

• first, light source (401) will projects light rays towards a reflector (403);
• next, the reflector (403) will form a virtual image (405). The reflector (403) is configured to ensure formation of virtual image (405);
• then, directing light rays from the virtual image (405) towards a condenser lens (407); and
• thereafter, projecting multifunctional light beam from output surface of the condenser lens (407).
8. The method of projecting beam from the improved compact shieldless projection optical system as claimed in claim 7, wherein the reflector (403) forms reflected light rays to thereby form the virtual image (405) at rear end of the reflector (403).
9. The method of projecting beam from the improved compact shieldless projection optical system as claimed in claim 7, wherein the condenser lens (407) form directed light rays using the virtual image (405) as a virtual light source.
10. The method of projecting beam from the improved compact shieldless projection optical system as claimed in claim 7, wherein the directed light rays of the condenser lens (407) ensure projection of multifunctional light beam.
11. The method of projecting beam from the improved compact shieldless projection optical system as claimed in claim 10, wherein the light beam is of type of low beam, high beam, combination of low beam- high beam.

Dated this 23.03.2024.

Archana Singh, Shreya Chaudhary
(IN/PA-1936, IN/PA-5145)
Of Singh and Singh Law Firm LLP
Patent Agents for the Applicant