1. A device for measuring and controlling the intensity of ambient light at a point from the light imparting source, comprising a sensor transmitter module for sensing the intensity of ambient light at said point and transmitting a feedback signal about the intensity from said module to a receiver module; where said receiver module is a microcontroller based module comprising atleast a light sensor and atleast a transmitter; said receiver is adapted to receive said feedback signal from said sensor transmitter module and accordingly facilitates in controlling the intensity of ambient light by increasing or decreasing it at said point.

2. The device as claimed in claim 1, wherein said sensor transmitter module is a hand held remote device.

3. The device as claimed in claim 1, wherein said sensor transmitter module is located in the vicinity of said light imparting source.

4. The device as claimed in claim 1, comprises power supply, audio/visual alarm signals.

5. The device as claimed in claim 4, wherein said audio/visual alarm signals comprises LCD/LED/Buzzer.

6. A method for measuring and controlling the intensity of ambient light at a point from the light imparting source by the device as claimed in claim 1, wherein said method comprising the steps of sensing the intensity of ambient light at said point by the light sensor and sending the message to said microcontroller for processing into numerals and transmitting the message to said receiver module for further processing where said receiver module controls the power of intensity of ambient light of said source at said point.

FIELD OF THE INVENTION
The present invention relates to a device which can measure the intensity of ambient light and
more particularly a device which can intimate if the ambient light is adequate for reading or
not and more particularly the device that can automatically adjust the intensity of light .
BACKGROUND OF THE INVENTION
Nowadays, it has been observed that a large number of students suffer from eyesight related
problems like low vision, stress, pain, headache, etc. Many students have to use spectacles at
an early stage in their life. A reason for this may be that children and parents are unaware of
the use of proper lighting for reading or studying purpose or while watching television or
using a computer. Long term exposure to inadequate light may result in vision related issues
or other eyesight related problems.
US Patent 6115107A has disclosed an apparatus with detachable illumination sensor which is
used to calibrate permanently installed illumination sensors such as an integrator sensor that
detects the intensity of exposing light. US Patent 4465370A has disclosed a light measuring
device which includes photodiodes, capacitors etc. to calculate the received amount of light
intensity.
These devices may be very useful for measuring the intensity of available light at a particular
location. However, there is a lack of devices which can measure intensity of light as well as
recommend whether the light is suitable for reading or not so that the reader’s eye do not get
strained.
There is hence, an unmet need of developing a device for measuring intensity of light, more
particularly with an alert system to recommend reading and more particularly which can
adjust the light intensity automatically, for the benefit of the vision of the students.
OBJECTS OF THE INVENTION
Therefore, one object of the present invention is to measure the intensity of the exposed light.
Another object of the present invention is to recommend students whether the available light
is suitable for reading or not and for other purposes as mentioned above.
Yet another object of the present invention is to automatically adjust the intensity of the
exposed light for the purpose it is being used.
Still another object of the present invention is to automatically adjust the intensity of the
exposed light for the kids doing studies which may otherwise do studies at low or high
intensity light resulting stress and associated eyesight problem.
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SUMMARY OF THE INVENTION:
In an aspect of the Invention, there is provided a device for measuring and controlling the
intensity of ambient light at a point from the light imparting source, comprising
a sensor transmitter module for sensing the intensity of ambient light at said point and
transmitting a feedback signal about the intensity from said module to a receiver module;
where said receiver module is a microcontroller based module comprising atleast a light
sensor and atleast a transmitter;
said receiver is adapted to receive said feedback signal from said sensor transmitter module
and accordingly facilitates in controlling the intensity of ambient light by increasing or
decreasing it at said point.
In another aspect of the Invention, there is provided a method for measuring and controlling
the intensity of ambient light at a point from the light imparting source by the device as
described above, wherein said method comprising the steps of sensing the intensity of
ambient light at said point by the light sensor and sending the message to said microcontroller
for processing into numerals and transmitting the message to said receiver module for further
processing where said receiver module controls the power of intensity of ambient light of said
source at said point.
BRIEF DESCRIPTION OF THE DRAWINGS:
To further clarify advantages and features of the present invention, a more particular
description of the invention will be rendered by reference to specific embodiments thereof,
which is illustrated in the appended drawings. It is appreciated that these drawings depict
only typical embodiments of the invention and are therefore not to be considered limiting of
its scope. The invention will be described and explained with additional specificity and detail
with the accompanying drawings in which:
Figure 1: illustrates an overview of the Transmitter module of the Device of present
Invention
Figure 2: illustrates an overview of the Receiver module of the Device of present Invention
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DESCRIPTION OF THE INVENTION
For the purpose of promoting an understanding of the principles of the invention, reference
will now be made to the embodiment illustrated in the drawings and specific language will be
used to describe the same. It will nevertheless be understood that no limitation of the scope of
the invention is thereby intended, such alterations and further modifications in the illustrated
system, and such further applications of the principles of the invention as illustrated therein
being contemplated as would normally occur to one skilled in the art to which the invention
relates.
It will be understood by those skilled in the art that the foregoing general description and the
following detailed description are exemplary and explanatory of the invention and are not
intended to be restrictive thereof. Throughout the patent specification, a convention employed
is that in the appended drawings, like numerals denote like components.
The present Invention provides a device or system for controlling the optimum light intensity
at point irrespective distance from the bulb dynamically and method thereof.
In another aspect of the Invention, there is provided a method for measuring and controlling
the intensity of ambient light at a point from the light imparting source
In an embodiment, the device for measuring and controlling the intensity of ambient light at a
point from the light imparting source, comprises sensor transmitter module for sensing the
intensity of ambient light at said point and transmitting a feedback signal about the intensity
from said module to a receiver module; where said receiver module is a microcontroller
based module comprising atleast a light sensor and atleast a transmitter. The receiver is
adapted to receive said feedback signal from said sensor transmitter module and accordingly
facilitates in controlling the intensity of ambient light by increasing or decreasing it at said
point.
In an embodiment, the sensor transmitter module is a hand held remote device.
In an embodiment, the sensor transmitter module is located in the vicinity of said light
imparting source.
In an embodiment, the device comprises power supply, audio/visual alarm signals.
In an embodiment, the audio/visual alarm signals comprises LCD/LED/Buzzer.
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In another aspect of the Invention, there is provided a method for measuring and controlling
the intensity of ambient light at a point from the light imparting source by the device as
described above. The method comprising the steps of sensing the intensity of ambient light at
said point by the light sensor and sending the message to said microcontroller for processing
into numerals and transmitting the message to said receiver module for further processing
where said receiver module controls the power of intensity of ambient light of said source at
said point.
According to an aspect of the present invention, the device comprises set of lenses, electronic
circuits, photodiodes, photo sensors, photo resistors, etc. When the lenses are exposed to the
light at the particular location to be measured, photo sensors will detect the characteristics of
the light particles and the intensity will be displayed at the LCD display. If the detected
intensity is within the pre-set range suitable for reading, the recommendation to read will be
displayed. If the intensity is not within the range, alert message would be displayed. In
another embodiment of the device, it automatically adjusts the intensity of the exposed light
for the purpose it is being used.
In an embodiment, the device comprises following essential components:
1. Sensor transmitter module: This is a hand held remote device which senses
intensity at point and transmit signal about intensity .for receiver which is placed at
bulb side.
2. Receiver module: It take feedback from remote and controls the power to bulb
accordingly
In another embodiment, the device comprises following essential components:
1. Microcontroller
2. Light sensor
3. power supply
4. LCD/LED/Buzzer , optional
5. RF TRANSRECIVER
6. LED, battery
7. ac power controller
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Working of hand held remote: It is a microcontroller based device which has light sensor
which senses intensity of light microcontroller converts it into number then with help of rf
transmitter it is transmitted for receiver.
Receiver module: This is a microcontroller based device which controllers the power to bulb
on basis of feedback from transceiver.
While this description has disclosed certain specific embodiments of the present invention for
illustrative purposes, various modifications will be apparent to those skilled in the art which
do not constitute departures from the spirit and scope of the invention as defined in the
following claims, and it is to be distinctly understood that the foregoing descriptive matter is
to be interpreted merely as illustrative of the invention and not as a limitation.

I Claim:
1. A device for measuring and controlling the intensity of ambient light at a point from
the light imparting source, comprising
a sensor transmitter module for sensing the intensity of ambient light at said point and
transmitting a feedback signal about the intensity from said module to a receiver
module;
where said receiver module is a microcontroller based module comprising atleast a
light sensor and atleast a transmitter;
said receiver is adapted to receive said feedback signal from said sensor transmitter
module and accordingly facilitates in controlling the intensity of ambient light by
increasing or decreasing it at said point.
2. The device as claimed in claim 1, wherein said sensor transmitter module is a hand
held remote device.
3. The device as claimed in claim 1, wherein said sensor transmitter module is located in
the vicinity of said light imparting source.
4. The device as claimed in claim 1, comprises power supply, audio/visual alarm signals.
5. The device as claimed in claim 4, wherein said audio/visual alarm signals comprises
LCD/LED/Buzzer.
6. A method for measuring and controlling the intensity of ambient light at a point from
the light imparting source by the device as claimed in claim 1, wherein said method
comprising the steps of sensing the intensity of ambient light at said point by the light
sensor and sending the message to said microcontroller for processing into numerals
and transmitting the message to said receiver module for further processing where
said receiver module controls the power of intensity of ambient light of said source at
said point.