RADIATION PROJECTING DEVICE
Assignee
The Aerospace Corporation
Filed as: KAMAN AEROSPACE CORPORATION
Filed
Aug 9, 1990
Granted
Jun 29, 1993
Location
TORRINGTON CT US
Abstract
A device is provided for expanding, reshaping, modifying the intensity distribution and projecting a beam of radiation such as light. The present invention comprises a four sided, internally mirrored tube of polygonal (i.e., rectangular) cross-section wherein the cross-sectional area of the tube expands (generally linearly) with respect to tube length from a first end to a second end. The first end of the tube is associated with a plano-concave (or equivalent) lens and the second end of the tube is associated with a generally flat pane exit optic which includes optical edging for refracting perimeter rays back into the desired field of view. A practical application for the present invention is laser photogrammetry wherein typically it is desired (1) to expand a laser beam of circular cross-section, (2) to reshape the beam into a desired cross-section, usually rectangular, and (3) to project the reshaped beam upon a distant surface.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Apr 9, 1991
Rescinded
Dec 29, 1992
Duration
1 year, 8 months
Inventor
- 1ROBERT MAYERJAK
Record Details
- Patent number
- US 5223986
- Application
- 07565807
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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