Lighting Explained

April 21, 2010
/ Print / Reprints /
ShareMore
/ Text Size+


Here we contrinue with the second part of the Lighting Series. Read part one here.

Neither last nor least, the output light intensities and intensity distributions from the two arms of the output fiber bundles were significantly different in this commercially purchased assembly, containing a tungsten-halogen light source, fiber-optic mounting fixtures and a power source. This can be due to alignment issues at the input and output ends, or variations along the length of the fibers.

Specifying that the optical fibers in the input and output bundles are randomly arranged takes care of these issues.

Thus, the same intensity time-fluctuations and the same spatial distributions are produced at both output bundles.

In short, it worked without much work!

In addition, specular (direct) reflections were avoided and there also were software recalibrations performed during on-line operations.

This is just a little of what is commonly mentioned as “lighting.”

Materials’ Optical Properties and Special Optical Techniques
Both materials’ optical characteristics and special optical techniques can greatly improve system performance. Using characteristics and techniques, separately or together, improves discrimination/contrast and eliminates background interferences. These are listed below.

Materials’ optical properties: 1. Geometric
2. Spectral
3. Polarization
4. Induced optical characteristics.

Special optical techniques:
1. optical spatial filtering
2. structured lighting
3. shaped and random fiber optic bundles
4. differential detection
5. wave front coding.

In future posts, I’ll delve into the above items in more detail. As always, comments, questions and suggestions are encouraged.

Did you enjoy this article? Click here to subscribe to Quality Magazine. 

Recent Articles by Norman Axelrod

You must login or register in order to post a comment.

Multimedia

Videos

Podcasts

 In honor of World Quality Month, we spoke to James Rooney, ASQ Past Chairman of the Board of Directors 2013, for his take on quality around the world.
For more information, read the ASQ Speaking of Quality column.
More Podcasts

THE MAGAZINE

Quality Magazine

cover_image

2014 April

Check out the April 2014 edition of Quality Magazine for features!
Table Of Contents Subscribe

Manufacturing Process

Has/does news about a manufacturers’ recall (like the GM recall in the news now) cause you or your company to reexamine its manufacturing process?
View Results Poll Archive

Clear Seas Research

qcast_ClearSeas_logo.gifWith access to over one million professionals and more than 60 industry-specific publications,Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.

eNewsletters

STAY CONNECTED

facebook_40.png twitter_40px.png  youtube_40px.pnglinkedin_40px.png