Optical: systems and elements – Lens – With graded refractive index
Patent
1991-06-07
1992-05-26
Sugerman, Scott J.
Optical: systems and elements
Lens
With graded refractive index
359683, G02B 300, G02B 1514
Patent
active
051173085
ABSTRACT:
A lens system comprising, at locations in the vicinity of each other, radial type graded refractive index lens elements made of a medium having a positive refractive power and other radial type graded refractive index lens elements made of a medium having a negative refractive power. This lens system has aberrations corrected favorably with the radial type graded refractive index lens elements which are made of materials easily preparable.
REFERENCES:
patent: 4639094 (1987-01-01), Aono
patent: 4755039 (1988-07-01), Hattori
patent: 4762403 (1988-08-01), Hattori
Atkinson et al.; "Design of a Gradient-Index Photographic Objective"; Applied Optics, vol. 21, pp. 993-998, Mar. 15. 1982.
Aoki Norihiko
Tsuchida Hirofumi
Yamamoto Kimiaki
Olympus Optical Co,. Ltd.
Sugerman Scott J.
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