Optical scanning lens, optical scanning device and image...

Details Optical scanning lens, optical scanning device and image... Optical scanning lens, optical scanning device and image...

2005-03-22

2005-03-22

Phan, James (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S212100, C347S259000

Reexamination Certificate

active

06870652

ABSTRACT:
An optical scanning lens which is used in a scanning and age forming optical system which gathers a light flux deflected by a light deflector in the vicinity of a surface to be scanned. The lens is formed by plastic molding of polyolefin resin, and the following condition is satisfied: 0<|Δn(x)−min[Δn(x)]|<34×10−5, where Δn(x) denotes a refractive-index distribution existing inside the lens, in a range which the light flux passes through, in the lens, and min[Δn(x)] denotes the minimum value of the Δn(x).

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