Compact digital camera objective with interdigitated element ali

Details Compact digital camera objective with interdigitated element ali Compact digital camera objective with interdigitated element ali

1997-12-01

2000-06-06

Epps, Georgia

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

359627, 359635, G02B 2714, G02B 2710

Patent

active

060726342

ABSTRACT:
There is disclosed a compact lens system having four injection-molded singlet lens elements with one of the singlet lens elements having a diffractive optical surface to control axial chromatic aberrations and another of the singlet lens elements having a flint-like plastic material to control lateral chromatic aberration. The lens system includes interdigitated flange features which provides interdigitated alignment between the lens elements. A plurality of light suppression elements are used to suppress stray light paths from reaching a detector array of the lens system. Moreover, the lens system includes an anti-aliasing surface on one of the lens elements for controlling aliasing effects.

REFERENCES:
patent: 5044706 (1991-09-01), Chen
patent: 5235465 (1993-08-01), Hayashi
patent: 5539581 (1996-07-01), Sato

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