Optical axis displacement sensor with cylindrical lens means

Details Optical axis displacement sensor with cylindrical lens means Optical axis displacement sensor with cylindrical lens means

1988-02-10

1990-01-30

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250561, 356 1, G01J 120, G01N 2186

Patent

active

048975362

ABSTRACT:
Disclosed herewith is an optical axis displacement sensor, which has a convex lens having a hole on the optical axis, a light shielding plate having a hole on the optical axis and two parallel straight slits, a laser light source for irradiating a laser beam on a target surface through the holes of the light shielding plate and the convex lens, a CCD line sensor provided in parallel to the light shielding plate, perpendicular to the optical axis and perpendicular to the two straight slits, a cylindrical lens provided between the light shielding plate and the CCD line sensor, and a calculation unit for calculating the displacement of the target surface from the focal point of the convex lens, using the output of the CCD line sensor.

REFERENCES:
patent: 3617128 (1971-11-01), Harvey
patent: 3623811 (1971-11-01), Lederer
patent: 4204772 (1980-05-01), Balasubramanian
patent: 4211922 (1980-07-01), Vaerewyck et al.
patent: 4412746 (1983-11-01), Yokouchi
patent: 4548504 (1985-10-01), Morander
patent: 4645347 (1987-02-01), Rioux
patent: 4711999 (1987-12-01), Shishido et al.
patent: 4717819 (1988-01-01), Momiyama et al.
patent: 4753528 (1988-06-01), Hines et al.
patent: 4767934 (1988-08-01), Stauffer
Eighth International Conference on Pattern Recognition, Paris, 27-31 Oct. 1986; pp. 220-225; "3-D Model Reconstruction and Processing for CAE"; M. Idesawa.
Japanese Patent Abstracts, 61-155905(A), vol. 10, No. 358 (P.522) [2415], 12/2/86.

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