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US 2006/0049330 A1Published application
Optical system having element for correcting aberration of mirror and optical pickup apparatus employing the same
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsMee-suk Jung, Jin-seung Sohn, Sung-dong Suh, Eun-hyoung Cho, Hae-sung Kim
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Abstract
An optical system including a light source that generates light, a mirror changing an optical path of the light generated by the light source and an aberration correcting element that corrects aberrations generated in the light reflected from the mirror due to an error in the surface shape of the mirror.
Claims20
An optical system comprising:
- a light source generating light;
- a mirror changing an optical path of the light generated by the light source;
- and
- an aberration correcting element correcting an aberration generated in light reflected from the mirror due to an error in a shape of a surface of the mirror.
1 more element
An optical pickup apparatus comprising:
- a light source generating light;
- a mirror changing an optical path of the light generated by the light source;
- an aberration correcting element correcting an aberration generated in light reflected from the mirror due to an error in a shape of a surface of the mirror;
- an objective lens optical system concentrating the light reflected by the mirror onto an optical disc;
- a photodetector detecting information by receiving light reflected from the optical disc;
- and
- an optical path separation member disposed on an optical path between the objective lens optical system and the photodetector and refracting the light reflected from the optical disc towards the photodetector.
4 more elements
The optical pickup apparatus as claimed in claim 12, wherein a minimum pitch of the aberration correction pattern of the holographic optical element is not less than 10 μm.
Dependencies are inferred from the claim text.