Optical Sensors Quiz

Optical sensors are used for many different tasks, including sensing distance, color, ambient light, and even pressure. Test your knowledge with our quiz on optical sensors.

Optical Sensors Quiz

Score 100% on our Optical Sensors Quiz and leave your feedback as a comment to earn this badge...

To earn the Optical Sensors Badge, score 100% on the quiz and leave your feedback on the quiz as a comment.

Top Comments

gpolder over 3 years ago in reply to jc2048

https://en.wikipedia.org/wiki/CIE_1931_color_space
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jc2048 over 3 years ago in reply to neuromodulator

The sensor is trying to mimic the human eye response, so I think that the 'red' being referred to is the peak of the red cone sensitivity (about 580nm, or thereabouts).
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szabo.z87 over 3 years ago

yep, there were few mistakes
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insurgent over 3 years ago

Enjoyed the quiz and learned 580nm isn't red!
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hlipka over 3 years ago

I actually learned why phototransistors usually come in quite a number of different classifications.
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AbdulM over 3 years ago

Fluorescent and mercury halide lamps are still pretty common in offices and street lighting.. Although LEDs are becoming the norm.
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hiep134 over 3 years ago

A very good test!
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phoenixcomm over 3 years ago

fun quiz. 580 != RED
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IdeallyRandom over 3 years ago

I generally try to answer all the questions first based on what I already know, but had to do a bit more research than normal this time, so learnt quite a bit

the 580nm caught me out because that’s yellow. As did the question about illuminance, because lux is a measure of incident light not source intensity, so will vary quite a bit depending on how far the streetlight is away from the surface it’s illuminating, and the brightness of street lighting varies quite a lot.
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Gough Lui over 3 years ago

Yep ... I think they meant 680nm for red ...
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Optical Sensors Quiz

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Optical Sensors Quiz

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