Light interference device with low degree of spacial coherence

Details Light interference device with low degree of spacial coherence Light interference device with low degree of spacial coherence

1976-01-16

1978-02-07

Clark, Conrad J.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

356108, G01B 902

Patent

active

040724239

ABSTRACT:
A light interference device comprising a light source having a low degree of spacial coherence, an optical element having a reference surface for interference, an optical system for providing a parallel light bundle, and an optical projection system for projecting interference fringes localized near the interference surface.
Said parallel light bundle comes out of the reference surface at an angle .theta. within the range of 0.degree. < .theta. .ltoreq. 30.degree..

REFERENCES:
patent: 2518647 (1950-08-01), Teeple et al.
patent: 3941456 (1976-03-01), Schilz et al.
"Interference Methods & Instruments for Inspecting Optical Flats," I. I. Dukhopel, Sov. Jour. of Opt. Tech., vol. 38, No. 9, 1971, pp. 570-578.
Primak; William, The Determination of the Absolute Contours of Optical Flats, Applied Optics, Nov. 1967, p. 1917.
Peters & Boyd, The Calibration & Dimensional Changes of Precision Gage Blocks, American Machinist, vol. 53, No. 14, p. 627.
Bruce & Sharples, Relative Flatness Measurement of Uncoated Optical Flats, Applied Optics, vol. 14, No. 12, 12/75.

Affiliated with

Also associated with

Rating

Light interference device with low degree of spacial coherence does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light interference device with low degree of spacial coherence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light interference device with low degree of spacial coherence will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1398465