Archive for category photo
Light uniformity testing
Posted by Michael Beach in how-to, metrology, optics, photo, prototype, tech notes, tools on July 15th, 2009
For both a clinical test microscope, and a home theater HDTV projection display, the light from the source must be quite uniform.
To test some non-imaging illumination optics, we set up our digital camera, and wrestled with the RAW data files from the camera. Most cameras have some ability to ’see’ infra-red, so we can also test the pattern from the remote control output, or for other purposes.
Here we test the light uniformity of an LED source using a digital camera and some Thor Labs mounts.
These graphs were generated by ImageJ from the RAW data files of the Nikon D1x camera.
inside an electronic nose
Posted by Michael Beach in photo on March 11th, 2009
This is a bench test of a prototype electronic nose. Kind of like a wind tunnel test for odors.
The scale is 12 inches long.
Click on the photo for a larger image.