Collimator optical system and optical information storage...

Details Collimator optical system and optical information storage... Collimator optical system and optical information storage...

2006-02-21

2006-02-21

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

With support

C359S641000

Reexamination Certificate

active

07002758

ABSTRACT:
The present invention is intended, as an object thereof, to improve stability against both temperature changes and light source output changes, and includes an achromatic lens having a composite structure of glass or a plastic lens having a diffraction grating counteracting a focal length change due to a wavelength change of light, where a lens holder is adhered to an opposite side to a light source of an overhang of the achromatic lens made of glass while the lens holder is adhered to a light source side of the overhang of the plastic lens with the diffraction grating.

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patent: 2001-160238 (2001-06-01), None
patent: 2002-14269 (2002-01-01), None

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