Scanning optical spectral analyzer employing plural detectors

Details Scanning optical spectral analyzer employing plural detectors Scanning optical spectral analyzer employing plural detectors

1975-01-13

1976-11-16

Corbin, John K.

Optics: measuring and testing

Range or remote distance finding

With photodetection

250578, 356 73, G01J 330

Patent

active

039921018

ABSTRACT:
A scanner having an instantaneous narrow field of view determines spectral and positional information of a point source of optical radiation in a relatively wide field of view. A first optical path includes the scanning means, a dispersion means, and a first detector means so that different wavelengths of the source are convoluted to impinge on the first detector means at different times during a scan of the field of view. A second optical path includes the scanning means, the second detector means, and a narrow bandpass filter for enabling approximately monochromatic energy of the source to impinge on a second detector means displaced from the first detector means. Thereby, a predetermined wavelength is imaged on the second detector means at a time during a scan that differs from the time when that wavelength is imaged on the first detector means, even though the source angular position in the field of view is substantially the same for both of the optical paths. To enable the system to be responsive only to point sources, to the exclusion of nonpoint sources, each of the first and second detector means is divided into a multiplicity of separate, spaced detector elements. Each of the detector elements has a length in the direction of scan no greater than the length of the point source imaged on the first and second detector means. In response to the amplitude of energy impinging on the elements of the second detector means, a signal replica of the convoluted spectral energy impinging on one of the elements of the first detector means is coupled to a signal processing network that recognizes point sources having a predetermined spectral signature and enables the position of the recognized sources to be determined.

REFERENCES:
patent: 3460892 (1969-08-01), Dolin
patent: 3697760 (1972-10-01), Biet et al.
patent: 3869212 (1975-03-01), Burcher et al.

Affiliated with

Also associated with

Rating

Scanning optical spectral analyzer employing plural detectors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Scanning optical spectral analyzer employing plural detectors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scanning optical spectral analyzer employing plural detectors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-668269