Beam projecting device

Details Beam projecting device Beam projecting device

1998-12-09

1999-11-02

Ben, Loha

Optical: systems and elements

Lens

Anamorphic

359669, 2502015, 356345, G02B 1308

Patent

active

059781483

ABSTRACT:
A beam projecting apparatus includes a light source that emits a laser beam and a colliminating lens that renders the emitted laser beam a substantially parallel beam. A beam projecting device includes a beam projecting portion from which the laser beam is projected outwardly so that the laser beam has a beam waist located at a predetermined position spaced from the beam projecting apparatus. The beam projecting apparatus further includes a system that detects a curvature of wavefront of the substantially parallel beam at the predetermined position.

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Matsui, Yoshiya, "Introduction to Image-Forming Optics", pp. 112-115, published by Keigaku Shuppan.

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