Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1986-05-16
1989-03-28
Miller, Stanley D.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
350349, 350163, 250339, G02F 113, G02B 2700, G01J 100
Patent
active
048158283
ABSTRACT:
A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten uranium in an atomic vapor laser isotope separator (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. A number of different means for compressing the intensity range are disclosed. These include the use of photogray glass, the use of a pair of interference filters, and the utilization of a new liquid crystal notch filter in combination with an interference filter.
REFERENCES:
patent: 3114836 (1963-12-01), Fergason
patent: 3669525 (1972-06-01), Adams et al.
patent: 3679290 (1972-07-01), Adams et al.
patent: 4606613 (1986-08-01), Urabe
Jacobs, "Liquid Crystals as Large Aperture Waveplates and Circular Polarizers", SPIE, vol. 307, Polarizers & Applications, 1981.
Adams, "Cholesteric Films as Optical Filters", Journal of Applied Physics, vol. 4, No. 10, Sep. 1971.
Bleha et al., "Application of the LCLV to Real-Time Optical Data Processing", Optical Engineering, vol. 17, No. 4, 1978.
Carnanhan L. E.
Gaither Roger S.
Hightower Judson R.
Miller Stanley D.
Phan Trong Q.
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