Optical: systems and elements – Lens – With support
Patent
1997-05-29
1998-09-15
Ben, Loha
Optical: systems and elements
Lens
With support
359811, 264 11, G02B 702
Patent
active
058088172
ABSTRACT:
Disclosed is a lens assembly constructed of lenses and a lens frame for holding the lenses at predetermined intervals to make optical axes of the lenses coincident. Space walls contacting face-to-face lens surfaces of the two lenses to keep a spacing therebetween are integrally provided in at least three positions at equal intervals in the peripheral direction along an inner peripheral portion of the lens frame. Inner peripheral wall portions for holding at least two lenses in the lens frame, are formed by one of molding dies.
REFERENCES:
patent: 4303306 (1981-12-01), Ookawa
patent: 4506951 (1985-03-01), Yamada
patent: 5177641 (1993-01-01), Kobayashi et al.
Miyamoto Hidenori
Wakabayashi Hiroshi
Ben Loha
Nikon Corporation
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