DESC:
THE PATENTS ACT, 1970
COMPLETE SPECIFICATION
(See section 10)

TITLE

“GREEN VIRTUAL REALITY FOR ALL (VR4ALL): AN ENVIRONMENT FRIENDLY VR SOLUTION”

APPLICANT

Thinkagain Educational Services LLP,
B/13, Bapuji nagar, (1 st floor Flat – 5)
Kolkata – 700 092
West Bengal, INDIA

The following specification particularly describes the invention
and the manner in which it is performed

Field of the invention:
The present invention describes a smart and cost effective cardboard based Multi Purpose Virtual Reality Headset (VR4ALL). More specifically the present invention is designed to provide the most realistic experience of the simulated environment to the user. The present invention can be used as all 360-degree videos from any social platforms and all such platforms can be experienced in full immersiveness with this headset and any 3D or 360-degree game or application for Android or iOS can be used with this application.

Background / prior art:
Virtual Reality (VR) is considered as important technology, giving scope for a great leap for adverse fields. Virtual reality is sometimes referred to as immersive multimedia, is a computer-simulated environment that can simulate physical presence in places in the real world or imagined worlds. Virtual Reality Headsets are devices that enable the user to experience the world of Virtual Reality. These headsets are a key component in the world of near future. The idea is a headset made using cardboard which acts like a fully functional Virtual Reality Headset, when paired with a smartphone and also has provisions built-in for future Augmented Reality implementation.
The present GREEN_VR is a cardboard-based Virtual Reality headset different from existing Google Cardboard. A number of modification was incorporated designing the GREEN_VR. Especially the limitations and lacking areas of the Google Cardboard have been improved upon. GREEN_VR comes with a bi-convex lens that helps to provide the 3D VR effect out of a flat surface display like a smart phone LCD screen. The structure of the GREEN_VR headset is fabricated out of recycled cardboard material, which means it is fully environment friendly and is actually reducing the quantity of the waste generated by using waste as a raw material in its construction. So, on the construction point of view GREEN_VR can be said to have a negative carbon-footprint. Additionally, GREEN_VR is compatible with undivided 360 surround videos which can be found on popular social media platforms like Facebook and YouTube. This means that GREEN_VR does not come with a software dependency and can be simply used with all android/IOS devices using existing surround video streaming platforms.
Mostly VR platforms use a 45mm bi-convex lens including Google-Cardboard platform. This choice of lens gives the existing options a limitation in terms of cost effectiveness as these lenses are costly to manufacture. To get around this issue, GREEN_VR uses a 100mm bi-convex lens instead which is easier and cheaper to acquire as these lenses are widely manufactured across the nation as a part of the stationary industry as these lenses are commonly used in magnifying glasses. Additionally, to compensate for the change in focal length, GREEN_VR uses a different technique of optical light manipulation to generate the sense of depth perception in the user’s mind than other existing Virtual Reality headsets.
Thus, none of the prior art attempts, individually or collectively, proposed the system and embodiments indicated and disclosed (later) by the present invention. Therefore, to the best of our knowledge, none of the above mentioned prior art attempts, individually or collectively, proposed the system and embodiments indicated and disclosed by the present invention.

Object of the invention:
The object of the present invention is to provide an environment friendly and easily disposable and biodegradable material Virtual Reality (VR) Headset for Enthusiasts and Engineers.
Another object of the present invention is to use as professional Development Device on VR.
Further objective of the present invention is to provide a cheap alternative to traditional high priced products available in the market and let the financially poor people tap into the world of Virtual Reality (VR) content.
Summary of the invention
The present invention describes a cost effective cardboard Based Multi Purpose Virtual Reality Headset. The present invention is based on standard Virtual Reality platform. It uses 100 mm focal concave lenses instead of 45mm focal concave lenses in Google cardboard. These 100 mm focal lenses are easily available and generally cheaper which further reduces the overall price of the product while maintaining the efficiency. Further, it comes with a custom clip-on holding system that enables hands-free operation while still letting multiple users share the same headset without having any fitting issues.

Brief Description of the Drawing:
The manner in which the above recited features of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may have been referred by embodiments, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only typical embodiments of this invention and are therefore not to be considered limiting of its scope, for the invention may admit to other equally effective embodiments. Thus, a complete understanding of the system and method of the present invention may be obtained by reference to the following drawing:
FIGURE 100 a: Top view of “GREEN VR” device
FIGURE 100 b: Top view of “GREEN VR” device
FIGURE 200: Bottom view view of “GREEN VR” device
FIGURE 300: side view of “GREEN VR” device
FIGURE 400: back view of “GREEN VR” device
FIGURE 500: front view of “GREEN VR” device
FIGURE 600: Barrel pre-distortion during image formation
Detailed description of the invention with reference to the accompanying drawings:

The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. The amount of detail offered has the intention to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.
As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. If the specification states a feature “may” or “can” be included or have a characteristic, that particular feature is not required to be included or have the characteristic.
The exemplary embodiments shown in the accompanying drawings will now be described more fully hereinafter. The exemplary embodiments are provided only for illustrative purposes and this disclosure will be thorough and complete and will fully convey the scope of the invention to those of ordinary skill in the art.
The term VR alternately referred to as Virtual reality
A complete understanding of the system and method of the present invention may be obtained by reference to the following drawing:

Figure 100 illustrates the top view of the preferred embodiment. The present Virtual Reality Headset is based on standard Virtual Reality platform just like the Google Cardboard. Especially Google Cardboard platform’s drawbacks were handled very wisely and innovatively in the preferred embodiment. It uses 100 mm focal concave lenses instead of 45 mm focal concave lenses in Google cardboard. These 100 mm focal lenses are easily available and generally cheaper which further reduces the overall price of the product while maintaining the efficiency.
In the preferred embodiment, SMART DEVICE on which the picture or video is played is kept as illustrated in Figure 100. At a distance of 90 ± 1 mm from the SMART DEVICE left and right lenses are placed with the said focal configuration are fixed at a distance of 28 ± 1 mm. The distance from the eye to lens is 15 ± 1 mm. The width dimension of the device ranges from 142-147 mm, making the device more compact and easy to use.
The eye window has the height of 72 ± 1 mm with the distance of both lenses from left and right edges is 14 ± 1 mm. Distance of both lenses from upper and lower edges are 18 & 13 (± 1) mm respectively. Hight and width of the lens used are 41 and 44 (± 1) mm respectively.
In the preferred embodiment, the design of the system as explained in Figure 200-500 illustrates the design configuration
A = 40mm/ custom (2 variants depending on the shape of the user’s forehead section).
C= IPD (Inter-Pupillary Distance) ranges from 45mm to 75mm (customizable by end user).
D1 = D2 = diameter of hole for lens holder = 44mm (radius =22mm).
E = square cut-out slot for camera placement = approximately 40% of length of Y.
X = width of Smartphone = 67mm/ 76mm/ 84mm/ custom (4 different size variants).
Y = height of Smartphone = 130mm/ 150mm/ 164mm/ custom(4 different size variants).
Z = thickness of Smartphone = 7mm/ 8.5mm/ 15mm/ custom (4 different width variants).

The present greenVR does not have any dividers between the left and the right eye. Thus, this VR headset do not utilize the stereoscopic separation for inducing immersiveness. It instead, uses barrel distortion to recreate an illusion of depth. This eliminates the need for any special VR compatible content for using this headset. So, this headset can be used with normal 360-degree videos directly from social media platforms like YouTube, Facebook and google street-view. This headset is thus different from other VR headsets in the aspect that it does not need VR specific applications to run and is universally compatible with ant 360-degree content.
All the functions needed to perform for virtual reality to occur works perfectly in the present invention. Further, it comes with a custom clip-on holding system that enables handsfree operation while still letting multiple users share the same headset without having any fitting issues.
In the preferred embodiment, the device will perform using the social media 360-degree video/image streaming platform like YouTube, Facebook, Google street-view or simply google search and type 360-degree videos or 360-degree image and playing the video or loading the image. The gyroscopic sensor of the smart phone need to be checked and the screen rotation feature is enabled and brightness of the screen adjusted to a suitable level and make sure automatic brightness control is turned off. The play button if video (optional) is used as pressed. The smart phone is put inside the greenVR headset slot as indicated in Figure 100 a and 300 making sure that the camera side goes into the proper camera cut-out in the headset. A good headphone need to be connected when a video is streaming and want to experience the binaural surround sound experience (optional). The headset is put against your face properly orienting your eyes against the lenses. When focusing issues or contact-lenses the IPD of the lenses are carefully adjust. Then the nose position is checked properly fitting the nose cut-out on the headset and not causing any discomfort and the strap of the headset need to be attached behind your head one (optional) and the head need to move around and experience the magic of 360-degree visualization.
The invention disclosed may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Various modifications will be readily apparent to persons skilled in the art. The general principles defined herein may be applied to other embodiments and applications without departing from the scope of the invention. Moreover, all statements herein reciting embodiments of the invention, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future (i.e., any elements developed that perform the same function, regardless of structure).
Advantage of the invention:
The advantage of the preferred embodiment is that it is cost effective and made of easily available materials.
Another objective of the preferred embodiment is that the material used is biodegradable, thus eco-friendly.
Further advantage of the preferred embodiment is that the lenses used are of low cost.
Another advantage of the preferred embodiment is that the preferred embodiment comes with a custom clip-on holding system that enables hands-free operation while still letting multiple users share the same headset without having any fitting issues.

Other than above, GREEN_VR can be used in three important sectors. First as prototyping platform, secondly as an educational tool or thirdly an enhanced multimedia experiencing device. As a Prototyping platform it is capable of providing enough support to many trendy projects

i) A simple solar system environment can be made with this prototyping platform by using blender and unity3D for graphics, animation and UI development to create enthusiasm in people about space.
ii) An open-world VR game can be developed using this platform with the same pair of software.
iii) An Augmented Reality (AR) application can be developed which actually displays the navigation instructions as an overlay on the real-world input from the user’s device camera feed.
iv) A Mixed Reality (MR) application can be developed that lets the user draw 3D paintings in air using their hands only.
v) All 360-degree videos from platforms like Google Earth, Street view, YouTube, Facebook and all such platforms can be experienced in full immersiveness with this headset.
vi) Any 3D or 360-degree game or Application for Android or iOS can be used with this application.
vii) For viewing normal 2D videos, movies or shows as well, it could act as an enhancement device and give a “watching in theater” kind of experience to the user.
viii) For visualizing and understanding complex subjects (like working of an Internal Combustion Engine for example), it could act like a performance booster by letting the students visualize and interact with the data and thereby helping them clear the concepts and understand better.
Now on the other hand the GREEN_VR can be used for development tool to perform prototyping tests on new VR, AR and MR platforms. As a professional tool’ it can be used in
a) Healthcare industry to teach critical operations through simulations.
b) Education Sector for teaching new concepts to kids.
c) Automobile designing sector for visualizing concepts in a simulated environment before actually starting prototyping construction.
d) Interior designing sector for providing customer with real-like visual idea of how their design choices would look like after implementation.

Different embodiments of the invention are possible to achieve the best method of performance and to obtain the effective composition as describes. It will be understood that the invention may be carried out into practice by skilled persons with many modifications, variations and adaptations without departing from its spirit or exceeding the scope of the claims in describing the invention for the purpose of illustration. It is also to be noted that the present invention is susceptible to modifications, adaptations and changes by those skilled in the art. Such variant embodiments employing the concepts and features of this invention are intended to be within the scope of the present invention, which is further set forth under the following claims:-
Moreover, all statements herein reciting embodiments of the invention, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future (i.e., any elements developed that perform the same function, regardless of structure).
Any inclusion to or deletion from the embodiment occurred, the specification is herein deemed as modified thus fulfilling the written description of all elements used in the claims so appended.

We claim
1. A smart VR device (100-500) comprising
-100 mm focal concave lenses embedded in the VR box
- GREEN_VR box configured with 1mm recycled cardboard
-Cardboard Band with clipping system
-slot for smart phone embedded in the system
-Custom clipping system

2. A smart VR device as claimed in claim 1 wherein distance between smart phone and lenses 90 ± 1 mm from the SMART DEVICE and left and right lenses with the said focal configuration are fixed at a distance of 28 ± 1 mm.
3. A smart VR device as claimed in claim 1 wherein the distance from the eye to lens is 15 ± 1 mm and the width dimension of the device ranges from 142-147 mm, making the device more compact and easy to use.
4. A smart VR device as claimed in claim 1 wherein the eye window has the height of 72 ± 1 mm with the distance of both lenses from left and right edges is 14 ± 1 mm.
5. A smart VR device as claimed in claim 1 wherein the distance of both lenses from upper and lower edges are 18 & 13 (± 1) mm respectively and height and width of the lens used are 41 and 44 (± 1) mm respectively.
6. A smart VR device (100-500) as claimed in claim 1 wherein design specification are A - 40mm/ custom (2 variants depending on the shape of the user’s forehead section), C ( IPD -Inter-Pupillary Distance) ranges from 45mm to 75mm (customizable by end user) , D1 = D2 = diameter of hole for lens holder = 44mm (radius =22mm) , E = square cut-out slot for camera placement = approximately 40% of length of Y, X = width of Smartphone = 67mm/ 76mm/ 84mm/ custom (4 different size variants), Y = height of Smartphone = 130mm/ 150mm/ 164mm/ custom(4 different size variants)., Z = thickness of Smartphone = 7mm/ 8.5mm/ 15mm/ custom (4 different width variants).

7. The method of performing the VR device comprises of

-Connecting any social media 360-degree video/image streaming and type 360-degree videos or 360-degree image and play the video or load the image.
-Checking that the gyroscopic sensor of the smartphone and the screen rotation feature is enabled.
-Adjusting the screen brightness to a suitable level and make sure automatic brightness control is turned off.
-Pressing the play button for a video (optional).
-Putting the smart phone inside the greenVR headset slot (100 a and 300) making sure that the camera side goes into the proper camera cut-out in the headset.
-Connecting a good headphone when streaming a video and want to experience the binaural surround sound experience (optional).
-Putting the headset against your face properly orienting your eyes against the lenses. If you are having focusing issues or contact-lenses, carefully adjust the IPD of the lenses.
-Checking the nose is properly fitting the nose cut-out on the headset and not causing any discomfort.
-Attaching the strap of the headset behind your head one (optional)
-Moving the head around and experience the magic of 360-degree visualization.

8. The method as claimed in claim 7 wherein the greenVR does not have any dividers between the left and the right eye and VR headset do not utilize the stereoscopic separation for inducing immersiveness and uses barrel distortion (600) to recreate an illusion of depth and eliminates the need for any special VR compatible content for using the headset.
9. The method as claimed in claim 7 wherein headset can be used with normal 360-degree videos directly from social media platforms and the system devoid of VR specific applications and is universally compatible with ant 360-degree content.

MAHUYA HOM CHOUDHURY
IN/PA-502

Abstract
“GREEN VIRTUAL REALITY FOR ALL (VR4ALL): AN ENVIRONMENT FRIENDLY VR SOLUTION”

The present invention describes a device which is cost effective cardboard Based Multi Purpose Virtual Reality Headset (VR4ALL). This invention is compatible with Virtual Reality and also normal 360degree videos and so it can be used for both experiencing Virtual Reality and enhancing viewing experience of normal videos. It uses 100mm focal concave lenses instead of 45mm focal concave lenses in Google cardboard. These 100mm focal lenses are easily available and generally cheaper which further reduces the overall price of the product while maintaining the efficiency. Further, it comes with a custom clip-on holding system that enables hands-free operation while still letting multiple users share the same headset without having any fitting issues.

MAHUYA HOM CHOUDHURY IN/PA-502

,CLAIMS:We claim
1. A smart VR device (100-500) comprising
-100 mm focal concave lenses embedded in the VR box
- GREEN_VR box configured with 1mm recycled cardboard
-Cardboard Band with clipping system
-slot for smart phone embedded in the system
-Custom clipping system

2. A smart VR device as claimed in claim 1 wherein distance between smart phone and lenses 90 ± 1 mm from the SMART DEVICE and left and right lenses with the said focal configuration are fixed at a distance of 28 ± 1 mm.
3. A smart VR device as claimed in claim 1 wherein the distance from the eye to lens is 15 ± 1 mm and the width dimension of the device ranges from 142-147 mm, making the device more compact and easy to use.
4. A smart VR device as claimed in claim 1 wherein the eye window has the height of 72 ± 1 mm with the distance of both lenses from left and right edges is 14 ± 1 mm.
5. A smart VR device as claimed in claim 1 wherein the distance of both lenses from upper and lower edges are 18 & 13 (± 1) mm respectively and height and width of the lens used are 41 and 44 (± 1) mm respectively.
6. A smart VR device (100-500) as claimed in claim 1 wherein design specification are A - 40mm/ custom (2 variants depending on the shape of the user’s forehead section), C ( IPD -Inter-Pupillary Distance) ranges from 45mm to 75mm (customizable by end user) , D1 = D2 = diameter of hole for lens holder = 44mm (radius =22mm) , E = square cut-out slot for camera placement = approximately 40% of length of Y, X = width of Smartphone = 67mm/ 76mm/ 84mm/ custom (4 different size variants), Y = height of Smartphone = 130mm/ 150mm/ 164mm/ custom(4 different size variants)., Z = thickness of Smartphone = 7mm/ 8.5mm/ 15mm/ custom (4 different width variants).

7. The method of performing the VR device comprises of

-Connecting any social media 360-degree video/image streaming and type 360-degree videos or 360-degree image and play the video or load the image.
-Checking that the gyroscopic sensor of the smartphone and the screen rotation feature is enabled.
-Adjusting the screen brightness to a suitable level and make sure automatic brightness control is turned off.
-Pressing the play button for a video (optional).
-Putting the smart phone inside the greenVR headset slot (100 a and 300) making sure that the camera side goes into the proper camera cut-out in the headset.
-Connecting a good headphone when streaming a video and want to experience the binaural surround sound experience (optional).
-Putting the headset against your face properly orienting your eyes against the lenses. If you are having focusing issues or contact-lenses, carefully adjust the IPD of the lenses.
-Checking the nose is properly fitting the nose cut-out on the headset and not causing any discomfort.
-Attaching the strap of the headset behind your head one (optional)
-Moving the head around and experience the magic of 360-degree visualization.

8. The method as claimed in claim 7 wherein the greenVR does not have any dividers between the left and the right eye and VR headset do not utilize the stereoscopic separation for inducing immersiveness and uses barrel distortion (600) to recreate an illusion of depth and eliminates the need for any special VR compatible content for using the headset.
9. The method as claimed in claim 7 wherein headset can be used with normal 360-degree videos directly from social media platforms and the system devoid of VR specific applications and is universally compatible with ant 360-degree content.