Borescope calibration

Details Borescope calibration Borescope calibration

1984-11-23

1987-06-02

Evans, F. L.

Optics: measuring and testing

Lens or reflective image former testing

For optical transfer function

356241, G01M 1100

Patent

active

046698744

ABSTRACT:
In the present invention, a support positions a target within the field of view of the borescope. The target is in the focal plane of the borescope and contains a series of parallel images of progressively finer detail. The image having the finest detail which is detectable by the borescope gives a measure of the borescope's resolving power.

REFERENCES:
patent: 3630618 (1971-12-01), Jacoby
Franz, Industrial Photography, vol. 22, No. 2, Feb. 1973, p. 34.
Lindberg, J. Opt. Soc. Am., vol. 42, No. 10, Oct. 1952, p. 748.
Coleman et al., J. Opt. Soc. Am., vol. 37, No. 4, Apr. 1947, p. 263.
Gardner et al., Research Paper RP984, J. Res. of Nat. Bur. Stand., vol. 18, Apr. 1937, p. 449.

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