This page created 07/03/2001

Last Friday, Brynn brought over Tryclops' eye, and we setup a CCD camera
at the focal plane, and did some testing. see: TryRange
Well, OF COURSE, Jeff Sampson suggested just taking a regular laser pointer
and angling it out in front of the camera and watching the spot move, so I
tried it last night.

The plot at the bottom of this page shows the pixel that the spot hits
while I move a sheet of white paper slowly away from the camera.

This was done with the full room lights and fluorescent light on.

So, since I like these results, I'm going to try spinning a mirror and taking
ranges this way, and we'll see...

Click thumbnails for a larger view.

More RSOH

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Rangefinder test setup

The camera, lens and laser	The business end of the camera, lens and laser
The camera's view of a spot 1 Foot from the camera.	The camera's view of a spot 10 Feet from the camera.
A plot of top-pixel VS Range	A plot of center-pixel VS Range in Inches
An image of a projected laser circle from a spinning piece of glass projected onto cardboard
An image of a projected laser circle from a spinning piece of mirror projected onto the wall 10 feet away. ROOM LIGHS ON!!!	An image of a projected laser circle from a spinning piece of mirror projected onto the wall 10 feet away. ROOM LIGHS ON!!!
An image of a projected laser circle from a spinning piece of mirror projected onto the wall 10 feet away. ROOM LIGHS ON!!! Motor spinning slower	An image of a projected laser circle from a spinning piece of mirror projected onto the wall 10 feet away. ROOM LIGHS ON!!! Motor spinning slower