FORM 2
THE PATENTS ACT, 1970
(39 OF 1970)
As amended by the Patents (Amendment) Act, 2005
&
The Patents Rules, 2003
As amended by the Patents (Amendment) Rules, 2006
PROVISIONAL SPECIFICATION
(See section 10 and rule 13)
TITLE OF THE INVENTION
Adjustable lighting fixture.
APPLICANTS
Crompton Greaves Limited, CG House, Dr Annie Besant Road, Worli Mumbai 400 030, Maharashtra, India, an Indian Company
INVENTOR
Khedkar Parag Prabhakar of Crompton Greaves Ltd , Technology Cell, Switchgear Division (S3) Division, A3, MIDC Ambad. Nashik, 422010 , Maharashtra India.
PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the nature of this invention:

FIELD OF THE INVENTION
This invention relates to an adjustable light fixture.
BACKGROUND OF THE INVENTION
In prior art various types of lighting fixtures are available. Most of these light fixtures give a fixed beam of light normally conical in shape. This beam of light can light a fixed shape on a plane surface or floor. Normally this shape is circular. If there are several lamps mounted, one can see the light pattern of circular shape of lit areas with dark patches in between. This light pattern is fixed and cannot be changed easily.
The orientation of the light is also fixed, for a roof/ ceiling mounted lamp it is vertically downward. The intensity of the light is more right below the lamp if the lamp is fixed to the ceiling.
There are many applications of lighting where this fixed pattern of light creates visibility problem, for example any industry where manufacturing/ assembly of electrical panels is done. An electrical panel is like a cabinet closed from top and three sides. The worker does the assembly work from one side, which is open. The light falling inside the panel is not sufficient and it leads to visibility problems.
OBJECTS OF THE INVENTION
An object of the invention is to provide an adjustable light fixture thereby allowing the user to change the light pattern.
Another object of the invention is to provide the adjustable light fixture thereby allowing the user to change the light pattern remotely i.e. without touching the fixture.
Another object of the invention is to provide the adjustable light fixture thereby allowing the user to change the light pattern instantly.
Yet another object of the invention is to provide the adjustable light fixture thereby allowing the user to change the light pattern without using any tool.


Yet another object of the invention is to provide the adjustable light fixture thereby allowing changing the light pattern online, seeing the effect of the changed pattern and maintaining the desired light pattern.
DESCRIPTION OF THE INVENTION
The invention comprises of three embodiments.
In the first embodiment there is a main reflector and few auxiliary/ secondary reflectors. The main reflector holds a lamp similar to GLS or Mercury vapour lamp in it. The lamp is surrounded by auxiliary reflector(s). A pivot type joint connects the Auxiliary reflector(s) to main reflector. The axis of the pivot is perpendicular the axis of lamp. The auxiliary reflectors can rotate or oscillate along this pivot. By oscillating or rotating, these reflector(s) can be brought close to or away from the lamp. By this movement the reflected light below will vary. The area that is being lit and its shape can be changed. Similarly the intensity of the light can be adjusted.
In this embodiment all the reflectors can move simultaneously. These reflectors can be operated by any suitable means remotely. One of those means could be a cable(s). One end of the cable(s) can be connected to a suitable mechanism(s) and the other to any device, which will enable pulling of the cable. One of those devices could be a screw, which when rotated will pull the cable to operate the mechanism(s).
In the second embodiment the construction of the reflectors is same however the mechanism will defer which will enable to operate the reflector(s) individually. In this mechanism it is also possible to rotate the entire reflector assembly along the axis of the lamp. With this it is possible to reduce the intensity of the light right below the lamp and can be increased at any point, which is away from the lamp.
In the third embodiment there is a main reflector and few auxiliary/ secondary reflectors. The main reflector holds a lamp in it. The lamp is surrounded by auxiliary reflector(s). A pivot type joint connects the auxiliary reflector(s) to main reflector. The auxiliary reflectors can rotate or oscillate along this pivot. The axis of the pivot is parallel to the


lamp axis. By oscillating or rotating, these auxiliary reflector(s) the curvature of the reflectors can be made parallel to the curvature of the lamp or can be made perpendicular to the same. When these auxiliary reflectors are parallel to lamp surface it will give a narrow beam of light. When it is perpendicular to the lamp curvature it will not reflect any light and the light pattern of the main reflector will be available.
In accordance to the present invention, the cable can also be pulled manually.
In accordance to the present invention, the mechanism can be operated by other means also like an electrically operated motor.
In accordance to the present in invention, the reflectors can be made of any reflective material.
In accordance to the present in invention, the lighting fixture can be used with any type of lamp.
In accordance to the present in invention, the fixture can be mounted vertically horizontally or in any other orientation.
In accordance to the present in invention, this fixture provides freedom to the user to change the lighting pattern as per the requirement.
In accordance to the present in invention it enables the user to change the light pattern without going near the lamp.
In accordance to the present in invention it enables the user to see the changing light
pattern and hold the fixture in such way that it will continue to emit the desired light
pattern.