Imaging system and optical components thereof

Details Imaging system and optical components thereof Imaging system and optical components thereof

2005-03-10

2008-03-25

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S362000

Reexamination Certificate

active

07349164

ABSTRACT:
An imaging system includes a first optical component serving as an image forming part and a second optical component disposed in front of the first optical component relative to an incident light wave. The second optical component and first optical component are jointly provided with a configuration for forming an image on a focal plane. The second optical component is a concave lens-type special optical plate having a focal length infinite in the central part thereof and finite in the periphery thereof. Light past the second optical component has a light wave phase delayed in accordance as a radial distance from the optical axis is increased and has a special wavefront in which its curvature increases in accordance as the radial distance from the optical axis increases after passing the second optical component. Consequently, the wave front curvature after passing through an image forming lens at the image forming part is decreased in accordance with increase of the radial distance.

REFERENCES:
patent: 5715090 (1998-02-01), Meyers
patent: 5715091 (1998-02-01), Meyers
patent: 5864430 (1999-01-01), Dickey et al.
patent: 6104533 (2000-08-01), Clark et al.
patent: 11-6966 (1999-01-01), None
Suzuki Aizo, Filmcraft of Astrophotograph, Oct. 15, 1977, pp. 66-67 and 140-141 (with partial English translation).

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