This technology is available from Temarex Corporation.

OPTICAL DEVICES

Title:COMBINED OPTICAL TRAIN FOR LASER SPECTROSCOPY

Inventor(s) H. Michael Cheung

Disclosure 149 U.S. Patent 5,298,969 Disclosure 149-DIV U.S. Patent 5,298,968

The present invention relates to an improved apparatus used for collecting quasi-elastic light scattering (also known as QELS) data and a method of use of such apparatus.More specifically, it relates to a method of increasing both the spatial resolution and angular resolution obtained by utilizing a pair of novel optical elements for collecting these data.To that extent, it provides an improvement over my co-pending application.Even more specifically, it relates to a novel optical element that eliminates the need of index matching fluids that are currently required to eliminate flare from the sample cell walls at the cell-sample and the cell-air interfaces.

Title:COMBINED HIGH SPATIAL RESOLUTION AND HIGH TOTAL INTENSITY SELECTION OPTICAL TRAIN FOR LASER SPECTROSCOPY

Inventor(s):H. Michael Cheung

Disclosure 102 U.S. Patent 5,028,135

An improved method of collecting quasi-elastic light scattering (also known as QELS) data and time-average intensity simultaneously is disclosed, as is a novel apparatus therefore.The apparatus utilizes a pair of matched novel optical elements that eliminate the need for index matching fluids that are currently required to eliminate flare from the sample cell walls at the cell-sample and the cell-air interfaces.The novel optical element incorporates desirable aspects of a pinhole aperture optical system and a double lens and center mask optical system.