Adjustable focus technique and apparatus using a moveable weak l

Details Adjustable focus technique and apparatus using a moveable weak l Adjustable focus technique and apparatus using a moveable weak l

1992-06-04

1993-10-26

Epps, Georgia Y.

Coherent light generators

Particular resonant cavity

Specified cavity component

372 99, 372107, 356153, H01S 308

Patent

active

052572790

ABSTRACT:
An assembly for use in a laser instrument which produces a plane of laser light by reflection from a cone. The assembly includes a weak focusing lens which improves the control over the planarity of the plane of light produced. Because it is weak, the weak focusing lens can be positioned over a relatively large distance to produce slight changes in the focus of the beam which is reflected to produce the plane of light. Critical, time consuming, and expensive manufacturing requirements can be relaxed, while improved performance results in superior laser instruments.

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patent: 4699447 (1987-10-01), Howard
patent: 4767208 (1988-08-01), Cain et al.
patent: 4801791 (1989-01-01), Cain

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