Actuator with reduced lens tilt error

Details Actuator with reduced lens tilt error Actuator with reduced lens tilt error

1996-07-24

1998-04-21

Ben, Loha

Optical: systems and elements

Lens

With support

359823, 369 4415, G02B 702

Patent

active

057424403

ABSTRACT:
An optical actuator is disclosed for positioning a lens to focus a laser light on a surface of a member, such as on optical disk, with minimum lens tilt error. The optical actuator includes a lens mount for supporting the lens, and at least two spaced-apart flexures that are fixed to the lens mount. The flexures are arranged so that they are parallel when viewed from one side. The optical actuator further includes a structure for applying a force to the lens mount along a line and between the flexures so that when viewed from the parallel flexure side the line bisects each flexure to cause the flexures to deflect such that as the lens moves to focus the light beam, lens tilt error is minimized.

REFERENCES:
patent: 4811320 (1989-03-01), Kawasaki et al.
patent: 5007712 (1991-04-01), Kikuchi et al.
patent: 5128806 (1992-07-01), Ohno
patent: 5381273 (1995-01-01), Goda

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