Pick-up head for incremental transmitter, particularly angular i

Details Pick-up head for incremental transmitter, particularly angular i Pick-up head for incremental transmitter, particularly angular i

1985-11-25

1987-10-13

LaRoche, Eugene R.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250237G, G01D 534

Patent

active

047000651

ABSTRACT:
A pick-up head for angular incremental transmitter comprises a transmitter portion (14) with luminescence diodes connected to a hybrid circuit. The hybrid circuit is placed in a hybrid housing (24) sealed by a lid with collimator lenses. A detector portion (16) comprises photodiodes on a hybrid circuit, which includes amplifiers for the photodiodes. The hybrid circuit is placed in a hybrid housing (46) the lid forming a stationary grating (64). The hybrid housings are hermetically sealed and supported at a distance from each other. A rotatable disc (10) with a movable grating (18) extends between the hybrid housings.

REFERENCES:
patent: 4338517 (1982-07-01), Perrine
patent: 4508965 (1985-04-01), Casciani

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