Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1995-07-20
1997-06-24
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
356416, G01J 314, G01J 328
Patent
active
056421915
ABSTRACT:
An spectrophotometer system (100) separately images rays of optical radiation in a plurality of wavelength bands from a distant object into a plurality of distinct wavelengths simultaneously and projects the separate images upon a detector (124). Each distinct wavelength is within a corresponding one of the plurality of wavelength bands. The apparatus includes a lens system comprising an objective lens (104), first and second field lenses (108, 116), a collimating lens (118), and a re-imaging lens (120) all disposed coaxially with respect to each other along an optic axis (110). The objective lens (104) and the first field lens (108) coact to cause rays of optical radiation emitted by the object to form an image at a first focal plane. An aperture (112) at the first focal plane passes rays of the optical radiation corresponding to a predetermined portion of the object. The second field lens (116) causes rays from the image at the first focal plane to form an image at a second focal plane. The collimating lens (118) causes rays entering the collimating lens (118) to be parallel leaving the collimating lens (118). The re-imaging lens (120) forms an image on the detector (124). A filter (114) between the first field lens (108) and the first focal plane passes rays of the optical radiation within the wavelength bands and suppresses optical radiation in wavelengths outside the wavelength bands. A prism system (122) is disposed coaxially along the optic axis near the second focal plane. A first prism (130) causes light in a first one of the plurality of wavelength bands to appear in a first location. A second prism (132) causes light in a second one of the plurality of wavelength bands to appear in a second location.
REFERENCES:
patent: 4743112 (1988-05-01), Burke
patent: 5024530 (1991-06-01), Mende
Mende et al., "Multi-Wavelength Imaging Photometer for the Topside Observation of Gravity Waves", SPIE-The International Society for Optical Engineering, Jul. 25-27, 1994, vol. 2266, pp. 434-450.
Evans F. L.
Lockheed Missiles & Space Company Inc.
LandOfFree
Multi-channel imaging spectrophotometer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-channel imaging spectrophotometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-channel imaging spectrophotometer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-152097