1989-10-06
1990-06-05
Bovernick, Rodney B.
350423, 350464, G02B 300
Patent
active
049308807
ABSTRACT:
A graded refractive index lens having refractive index distribution in the direction along the optical axis, a meniscus shape and a capability to correct aberrations, especially chromatic aberration.
REFERENCES:
patent: 4702568 (1987-10-01), Okudaira
patent: 4721369 (1988-01-01), Hattori et al.
Bovernick Rodney B.
Gass Rebecca D.
Olympus Optical Co,. Ltd.
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