ABBE prism lens with improved focus and reduced flair

Details ABBE prism lens with improved focus and reduced flair ABBE prism lens with improved focus and reduced flair

2011-01-11

2011-01-11

Harrington, Alicia M (Department: 2873)

Optical: systems and elements

Lens

Asymmetric

C359S728000

Reexamination Certificate

active

07869137

ABSTRACT:
An Abbe prism lens and lens array are disclosed. The lens comprises front lenses disposed on a front surface of the Abbe prism, rear lenses disposed on a rear surface of the Abbe prism, a front bottom reflecting surface, a rear bottom reflecting surface, a left top reflecting surface, and a right top reflecting surface. An aperture cover is positioned over the front surface of the Abbe prism lens and a field cover is positioned over the rear surface of the Abbe prism lens. The aperture cover comprises aperture holes encircling the aspherical front lenses. The field cover comprises field holes encircling the aspherical rear lenses. Light enters the Abbe prism lens and reflects off the front bottom reflecting surface, reflects off the left top reflecting surface and the right top reflecting surface, reflects off the rear bottom reflecting surface, and exits the rear lens of the Abbe prism lens.

REFERENCES:
patent: 4173394 (1979-11-01), Clave et al.
patent: 6215596 (2001-04-01), Araki et al.

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