Hemispherical retroreflector

Details Hemispherical retroreflector Hemispherical retroreflector

1988-02-16

1989-12-26

Bovernick, Rodney B.

350106, 350416, 350446, G02B 5126

Patent

active

048894095

ABSTRACT:
A retroreflector comprising two hemispheres of differing radii. The spherical surface of the first hemisphere is disposed towards a radiation source and the second hemisphere is provided with a reflective coating on its spherical surface. Means for modulating radiation from the retroreflector can be utilized within the retroreflector. In addition, smaller concentric inner hemispheres or a concentric inner sphere may be provided to correct chromatic and spherical aberrations produced by the retroreflector. Advantages obtainable with the disclosed retroreflector include consistent return efficiency over a large field of regard and consistent return efficiency over a wide spectral region.

REFERENCES:
patent: 1903385 (1938-05-01), Schiller
patent: 1934492 (1933-11-01), Garbarini
patent: 2968228 (1961-01-01), Merritt
patent: 3334345 (1967-08-01), Bradford
patent: 3863064 (1975-01-01), Doyle et al.
patent: 3874784 (1975-04-01), Eigenmann
patent: 3889027 (1975-06-01), White
patent: 3963309 (1976-06-01), Schwab
patent: 3981557 (1976-09-01), Eigenmann
patent: 3989942 (1976-11-01), Waddoups
patent: 4012114 (1977-03-01), Eigenmann
patent: 4123140 (1978-10-01), Ryan et al.
patent: 4134008 (1979-01-01), de Corlieu et al.
patent: 4143263 (1979-03-01), Eichweber
patent: 4145111 (1979-03-01), Hansson et al.
patent: 4192576 (1980-03-01), Tung et al.
patent: 4361911 (1982-11-01), Buser et al.
patent: 4411553 (1983-10-01), Eigenmann
patent: 4422733 (1983-12-01), Kikuchi et al.
patent: 4457625 (1984-07-01), Greenleaf et al.
patent: 4511210 (1985-04-01), Tung et al.
patent: 4708920 (1987-11-01), Orensteen et al.
Fundamentals of Optics (Fourth Edition) p. 19, 1976, by Jenkins and White.
Connes et al., "Near-Infrared Planetary Spectra by Fourier Spectroscopy. I. Instruments and Results," Journal of the Optical Society of America, vol. 56, No. 7, p. 896 (1966).
Baker, James G., "Optical Designs of Special Interest in the I.R." SPIE vol. 156, Modern Utilization of Infrared Technology IV (1978).

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