Optical lens component

Details Optical lens component Optical lens component

2011-07-05

2011-07-05

Sugarman, Scott J (Department: 2873)

Optical: systems and elements

Lens

Including a nonspherical surface

Reexamination Certificate

active

07974013

ABSTRACT:
An optical lens component comprises a fixed diaphragm, a lens group and a filter. The lens group comprises a first, a second and a third lens which is coaxial and arranged successively from object to image. The fixed diaphragm is located on the front of the first lens and the filter is located on the back of the third lens. The first lens comprises a first surface and a second surface; the second lens comprises a third surface and a fourth surface; and the third lens comprises a fifth surface and a sixth surface. The above six surfaces are all aspheric surfaces.

REFERENCES:
patent: 7480106 (2009-01-01), Sato et al.
patent: 7564635 (2009-07-01), Tang
patent: 2008/0212205 (2008-09-01), Noda

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