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EYE SIGHT SENSOR


prateeksikka
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Some virtual reality head sets and tell where your eyes are looking by reflectig a low powered infrared beam of your retina. Lets not forget iris scanners that can identify people.

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prateeksikka ,
Imadgine the retina acts lik a mirror to infra red light.  You can stand in front of the window on a sunny day and reflect the sunlight around the room with a small mirror or watch. The virtuality reality head set could work on the same principle.

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HI MP!
THE LINK GIVEN BY YOU GIVES THE SPECTRUM OF WHITE LIGHT ,THE WAVELENGTH AND FREQUENCIES.BUT I WISH TO KNOW WHAT THING WOULD YOU EXPLOIT FROM THE HUMAN EYE TO GET THE OUTPUT?
LIKE IF I RADIATE LIGHT AND RECIEVE IT BACK,HOW TO JUDGE THAT IT HAS REFLECTED FROM THE RETINA AND NOT MY GLASS WINDOW PANE?
:-\
PRATEEK

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  • 2 weeks later...

Your eyes detect only red, green and blue with some overlap. Your brain determines colours in between and can be fooled.
As example, the colour Yellow emits a wavelength between red and green. If you look at a red object and a green object that are close together, like a red/green LED, your brain thinks it is yellow. ;D

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