Superresolution scanning optical device

Details Superresolution scanning optical device Superresolution scanning optical device

1998-02-10

1999-11-02

Nguyen, Thong

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 29, 359558, 359559, 359562, 369112, G02B 532, G02B 2746, G11B 700

Patent

active

059781092

ABSTRACT:
A superresolution scanning optical device has image forming means for forming the image of light from a coherent light source unit in the form of a fine spot on a conjugate face through an image forming optical system, and scanning means for scanning the fine spot formed on the conjugate face. The coherent light source unit has first and second light sources of which phases are reverse to each other. The first and second light sources have the relationship that the main lobe of the image of the second light source on the conjugate face is superposed on the lateral sides of the main lobe of the image of the first light source on the conjugate face.

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