PULSED REMOTE GAUGE
Assignee
Filed
May 25, 1972
Granted
May 20, 1986
Location
Abstract
A method for measuring the separation between two spaced light-reflecting rfaces by means of a single laser pulse. The reflected light is divided into two beams which are then projected at the same angle θ onto the same area on a photographic film to form interference fringes. The film is developed, placed on a translating platform, and passed through the beam of a CW laser, a portion of the beam being diffracted by the interference fringes recorded on the film. The distance χ between the high-intensity points of adjacent interference regions is measured and the separation of the two light reflecting surfaces is calculated from the formula d=χ sin θ.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Jan 15, 1982
Rescinded
Nov 14, 1985
Duration
3 years, 10 months
Inventor
- 1RAYMOND A. PATTEN
Record Details
- Patent number
- US 4589772
- Application
- 05257998
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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