Holographic laser scanner motor

Details Holographic laser scanner motor Holographic laser scanner motor

1990-04-19

1991-05-21

Sugarman, Scott J.

350 62, 350 63, G02B 2610, G02B 532

Patent

active

050169556

ABSTRACT:
A holographic scanning motor is disclosed that includes a ring shaped rotor, a hologon scanning disc located within the ring shaped rotor, an air bearing assembly on which the rotor rides, and a stator assembly coupled to the air bearing assembly by a sleeve structure, wherein the sleeve structure includes at least one vent hole. The rotor is Y-shaped which permits a very compact planar motor design. Further reductions in size are accomplished by locating the permanent rotor magnets within the stem of the rotor. Additional cooling capacity is provided by mounting at least one fan blade adjacent to the hologon scanner disc on at least one side of the rotor. A mounting pad for the hologon scanning disc is also provided that has a higher thermal resistance than the rotor.

REFERENCES:
patent: 3721487 (1973-03-01), Pieuchard et al.
patent: 4540247 (1985-09-01), Nishi et al.
patent: 4556278 (1985-12-01), Schell
patent: 4610500 (1986-09-01), Kramer
patent: 4655541 (1987-04-01), Yamazaki et al.
patent: 4717223 (1988-01-01), Ishida et al.
patent: 4726640 (1988-02-01), Iwama et al.
patent: 4848862 (1989-07-01), Yamazaki et al.
patent: 4852956 (1989-08-01), Kramer

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