Light beam scanner with parallelism error correction

Details Light beam scanner with parallelism error correction Light beam scanner with parallelism error correction

1977-06-30

1978-12-12

Henry, Jon W.

G02B 2717

Patent

active

041293550

ABSTRACT:
A light beam scanner employs two rotary multi-surfaced mirrors 510, 520 manufactured together and having the same parallelism error characteristics between paired reflecting surfaces, and a relay lens 610 disposed between the two mirrors. The synchronously rotated mirrors are disposed at the conjugate planes of the relay lens, whereby parallelism errors are eliminated by subtractive cancellation.

REFERENCES:
patent: 3750189 (1973-07-01), Fleischer
patent: 3897132 (1975-07-01), Meeussen et al.
patent: 4054360 (1977-10-01), Oosaka et al.

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