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US 2006/0132641 A1Published application
Optical filter and image pickup apparatus having the same
OwnerShingo Hayakawainventor
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Abstract
A wavelength selective member for intercepting the passage of a beam of a predetermined wavelength range is disposed on a light incidence side of an optical member formed of an organic material having optical anisotropy, to thereby provide an optical filter which suffers little from the deterioration of performance with the passage of time by near ultraviolet rays, etc.
Claims8
An optical filter disposed in an optical path of an image pickup optical system, comprising:
- an organic optical member formed of an organic material having optical anisotropy;
- and
- a wavelength selective member for suppressing the passage of a light of a predetermined wavelength range, the wavelength selective member being located on a light incidence side of the organic optical member.
An optical filter disposed in an optical path of an image pickup optical system, comprising, in succession from a light incidence side to a light emergence side:
- a wavelength selective member for suppressing the passage of a light of a predetermined wavelength range;
- a first optical member for separating incident light into an ordinary ray and an extraordinary ray;
- a second optical member for changing a phase difference between the ordinary ray and the extraordinary ray;
- and.
- a third optical member for separating the incident light into an ordinary ray and an extraordinary ray,
- wherein at least one of the first, second and third optical members is formed of an organic material.
3 more elements
Dependencies are inferred from the claim text.