Planar lens and method for fabricating the same

Details Planar lens and method for fabricating the same Planar lens and method for fabricating the same

2006-02-07

2006-02-07

Vargot, Mathieu D. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Nonresinous material only

C065S017200, C216S026000, C264S001320, C264S001380, C264S496000

Reexamination Certificate

active

06994808

ABSTRACT:
A planar lens capable of compensating for chromatic aberration and which is easy to manufacture and enables easy assembling of optical pickups and a method for fabricating the planar lens are provided. The planar lens includes a transparent substrate with a lens cavity in a surface of the transparent substrate, and a lens element formed in the lens cavity with a first refracting surface in contact with the bottom of the lens cavity and a second diffracting surface having a diffraction grating opposite to the first refracting surface.

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Notice to Submit Response issued by the Korean Patent Office on Aug. 27, 2004 in corresponding application 10-2002-0070662.
Kouchiyama, A., et al.,Optical Recording Using High Numerical-Aperture Microlens by Plasma Etching, Jpn. J. Appl. Phys. vol. 40 (2000), pp. 1792-1793.
Yamada, M., et al.,A Novel Microminiaturized Aspherical Lens With a High Numerical Aperture, Technical Digest, ISOM/ODS 2002, pp. 398-400.

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