Photographic optical system using diffractive optical element

Details Photographic optical system using diffractive optical element Photographic optical system using diffractive optical element

1997-09-22

2000-01-04

Spyrou, Cassandra

Optical: systems and elements

Diffraction

From grating

359558, G02B 518

Patent

active

06011651&

ABSTRACT:
A photographic optical system using a DOE in which color flare is inconspicuous. The photographic optical system has at least one diffractive optical element. Assuming that a wavelength at which the diffraction efficiency of the diffractive optical element reaches a maximum is defined as a design wavelength .lambda..sub.DOE, it satisfies the following condition:

REFERENCES:
patent: 5493143 (1996-02-01), Hokari

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