Optical: systems and elements – Diffraction – From zone plate
Patent
1993-12-29
1996-08-06
Lerner, Martin
Optical: systems and elements
Diffraction
From zone plate
359566, 359569, G02B 518, G02B 2744
Patent
active
055439667
ABSTRACT:
A hybrid refractive and diffractive achromatic lens suited for single-use or inexpensive single-lens cameras operating in visible spectral range. The lens comprises a body of optically transmissive material having an index of refraction at a wavelength approximately at the center of said range of at least 1.45. The lens body having a first and second surface on opposite sides thereof, at least one of said surfaces being curved to provide a refractive portion having power and introduces chromatic aberration, the lens having a diffractive portion having power which substantially achromatizes the lens for the chromatic aberration of the refraction portion over about 440 nm to about 650 nm range.
REFERENCES:
patent: 4768183 (1988-08-01), Ohnishi et al.
patent: 5044706 (1991-09-01), Chen
patent: 5078513 (1992-01-01), Spaulding et al.
patent: 5117306 (1992-05-01), Cohen
patent: 5117433 (1992-05-01), Tatsuno et al.
patent: 5161040 (1992-11-01), Yokoyama et al.
patent: 5161057 (1992-11-01), Johnson
patent: 5208701 (1993-05-01), Maeda
patent: 5223978 (1993-06-01), Burkhart et al.
patent: 5229880 (1993-07-01), Spencer et al.
patent: 5235464 (1993-08-01), Tsuchida
patent: 5260828 (1993-11-01), Londono et al.
patent: 5268790 (1993-12-01), Chen
patent: 5287218 (1994-02-01), Chen
patent: 5299062 (1994-03-01), Ogata
patent: 5349471 (1994-09-01), Morris et al.
"Aspherical Molded Glass Lens of Super-Low Chromatic Aberration", Y. Tanaka et al., National Technical Report, vol. 35, No. 2, Apr. 1989, pp. 138-143.
"Spherical Grating Objective Lenses for Optical Disk Pick-ups", K. Goto et al., Proc. Int. Symp. on Optical Memory, 1987, Japanese Journal of Applied Physics, vol. 26 (1987), Supplement 26-4, pp. 135-140.
"An Objective with a Phase Plate", A. I. Tudorvskii, Optics and Spectroscopy, Feb., 1959, vol. VI, No. 2, pp. 126-133.
Eastman Kodak Company
Lerner Martin
Short Svetlana Z.
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