DEVICE FOR ON-LINE CHECK OF TOLERANCE OF DIAMETERS OF INPUT APERTURES OF PHOTOGRAPHIC LENS Russian patent published in 1997 - IPC

Abstract RU 2077709 C1

FIELD: instruments. SUBSTANCE: device has light source 2, collimator 3, calibration aperture 4, tested lens 5, photodetector 6 which is located in focal plane of tested lens 5, and measuring instrument 8. Said units are optically connected in series. In addition device has controlled power supply 1, which is connected to light source 2. Input of filter 7 is connected to output of photodetector 6; output of filter 7 is connected to measuring instruments 8. EFFECT: increased functional capabilities. 1 dwg

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RU 2 077 709 C1

Authors

Pankov S.I.

Mikaeljan I.R.

Dates

1997-04-20—Published

1994-01-28—Filed