Scott R Rosenthal

US Patent:

42863279, Aug 25, 1981

Filed:

Sep 10, 1979

Appl. No.:

6/073965

Inventors:

Robert D. Rosenthal - Gaithersburg MD
Scott B. Rosenthal - Gaithersburg MD

Assignee:

Trebor Industries, Inc. - Gaithersburg MD

International Classification:

G06F 1520
G01N 2100
G01J 348

US Classification:

364498

Abstract:

An apparatus for near infrared quantitative analysis with an infrared emitting diode (IRED) source utilizes narrow bandpass filters and silicon detectors to provide highly accurate and inexpensive measurement. A narrow bandpass filter in the light path of the IRED passes wavelengths outside the half power bandwidth points of the IRED. A silicon detector together with a sensitive amplifier is used to accurately measure linearly up to six decades of light sensitivity at desired wavelengths.

US Patent:

43792332, Apr 5, 1983

Filed:

May 27, 1981

Appl. No.:

6/267555

Inventors:

Scott B. Rosenthal - Gaithersburg MD

Assignee:

Trebor Industries, Inc. - Gaithersburg MD

International Classification:

H01L 900

US Classification:

250553

Abstract:

An instrument for quantitative analysis using a matrix of radiation emitting diodes has means for assuring that a sample receives substantially uniform radiation from each diode. In the preferred embodiment a lens is used to direct the radiation beams to a focal plane where there is a matte surface diffuser backed with an aperture to provide relatively uniform radiant energy field through the aperture to a sample chamber. With this arrangement the same energy distribution contacts the test samples from each of the radiation sources.