Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1985-12-13
1987-11-03
Corbin, John K.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
250464, G02B 960
Patent
active
047040114
ABSTRACT:
Three different embodiments are shown of a photographic objective comprising only six lens elements, which is made of three different optical glasses, and which is well-corrected for both monochromatic and chromatic aberrations and has only negligible secondary and higher-order spectra in a wavelength band extending from the visible to the near infrared regions of the electromagnetic spectrum. The photographic objective is also color-corrected at four widely separated wavelengths in that band. The first embodiment is optimized for a 200 mm focal length at a relative aperture of f/4 over a 12.degree. field of view. The second embodiment is optimized for a 200 mm focal length at a relative aperture of f/5 over a 20.degree. field of view. The third embodiment is optimized for a 200 mm focal length at a relative aperture of f/4 over a 12.degree. field of view.
REFERENCES:
patent: 2500017 (1950-03-01), Altman
patent: 3395962 (1968-08-01), Herzberger et al.
patent: 4349249 (1982-09-01), Brixner et al.
Robb et al., Glass Selection for Hyperachromatic Triplets, JOSA, vol. 73, Dec. 1983, p. 1882.
Corbin John K.
Dzierzynski P. M.
Lockheed Missiles & Space Company Inc.
Morrissey John J.
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