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Science Forum Index » Optics Forum » Question: Does anyone know what the detector device is in a
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| Steve |
 Posted: Sat Nov 08, 2003 4:12 am |
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In Rotary Laser levels a detector is used to sense the Red laser light.
Does anyone know what type of sensing device is used? Is it a photodiode,
Photocell, etc... |
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| Steve J. Noll |
| Posted: Mon Nov 10, 2003 9:24 am |
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On 8 Nov 2003 01:12:08 -0800, scrain1955@msn.com (Steve) wrote:
Quote: In Rotary Laser levels a detector is used to sense the Red laser light.
Does anyone know what type of sensing device is used? Is it a photodiode,
Photocell, etc...
I have seen what one of the professional units uses - one that's used
to control earthmoving equipment grading height. It uses silicon
photodiodes. Some standard silicon photodiodes are used for coarse
position sensing. A specialized version of a silicon photodiode
called a one dimension position sensitive detector is used at the
center of the detector for fine position detection.
Steve J. Noll | Ventura California |
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