Angle measuring device with line sensor

Details Angle measuring device with line sensor Angle measuring device with line sensor

1981-12-16

1985-05-21

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250237G, G01D 534

Patent

active

045188599

ABSTRACT:
A scale board carries a scale having a predetermined pitch and a light source projects this scale onto an array of sensors having a pitch which is substantially but not exactly equal to the pitch of the scale. By comparing successive pairs of sensor outputs, the angular position of the scale board can be determined to a resolution much smaller than the scale pitch.

REFERENCES:
patent: 3153111 (1964-10-01), Barber et al.
patent: 3549897 (1970-12-01), Blake
patent: 3748043 (1973-07-01), Zipin
patent: 3819909 (1974-06-01), Thompson
patent: 4100420 (1978-07-01), Metcalf et al.
patent: 4224514 (1980-09-01), Weber
patent: 4253021 (1981-02-01), Ernst

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