Model EO 1000 multispectral computerized lens evaluation station

Details Model EO 1000 multispectral computerized lens evaluation station Model EO 1000 multispectral computerized lens evaluation station

1979-04-02

1984-12-11

Rosenberger, R. A.

Optics: measuring and testing

Lens or reflective image former testing

Focal length measuring

356 51, G01B 900

Patent

active

044875029

ABSTRACT:
A device for use with infrared lenses to determine the optimum focal plane. The device comprises an infrared energy source, a collimating lens and an energy sensor to determine the energy level from the energy source to provide a normalizing signal. An infrared energy detector may be moved toward and away from the lens which is to be calibrated in order to test various planes within the depth of focus of the lens. A knife edge shutter is stepped across the path of energy at each of the positions to determine specific read outs of energy at each position of the knife edge shutter. The energy which passe the knife edge shutter is then delivered to a computer where the signal has been normalized by the sensor previously described. The computer reads out the signals corresponding to energy level at successive steps of the knife edge shutter. The computer is programmed to step the detector to successive positions and then the shutter to successive positions across the focal plane. The computer is also programmed to select a detector position between the two best energy levels and provide a readout for that position and to select once more if necessary between the two best energy levels and provide a readout for this position until no discernable change in energy output is obtained.

REFERENCES:
patent: 4147430 (1979-04-01), Gorgone et al.
Moore et al., "Production Lens Quality Evaluation" Optical Engineering, vol. 12, No. 5 (Sep.-Oct. 1973) pp. 155-160.
Haig N. D., "Transverse Ray Aberration Measurement at 10.6 Microns" Image Assessment & Specification Conference, Rochester, N. Y. May 20-22, 1974 pp. 294-298.
Dutton, D. "Procedure for Over-all Lens Evaluation" Applied Optics vol. 11, No. 5 (May 1972) pp. 1091-1100.
Aznarez et al. "Contribution /a/ la d/e/ termination des fonctions de transfert" Optic Acta vol. 21, No. 10 (Oct. 1974) pp. 809-817.

Affiliated with

Also associated with

Rating

Model EO 1000 multispectral computerized lens evaluation station does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Model EO 1000 multispectral computerized lens evaluation station, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Model EO 1000 multispectral computerized lens evaluation station will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1460663