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ATM Light source of mirror testing ---- LASER
I've found that using laser diode as a light source to
PROJECT (NOT see directly) the reflect image is very
convenient. Everyone beside me can see the result and
can give me opinion how to figure the mirror. I also
can capture the project image.
http://www.cse.cuhk.edu.hk/~hwyuen/WebCam/mirrortest0719/RonchiTest.jpg
The laser diode is very cheap that cost only about
HKD$20, which is less than USD$3. This is much cheaper
than using camera with TV.
Although its dangerous to see laser light directly, if
there is enough protect (maybe simply put all the
things into a black box except the project screen),
this method will become very very convenient.
=====
Wah!
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