Method of preparing information reading apparatus and objective

Details Method of preparing information reading apparatus and objective Method of preparing information reading apparatus and objective

1990-03-20

1991-10-15

Lobo, Ian J.

Optical: systems and elements

Lens

With support

369 4415, 369 4416, 359823, B02B 702, G11B 700, G11B 2110

Patent

active

050568914

ABSTRACT:
An information reading apparatus generally comprises a body for accommodating optical elements such as a semiconductor laser, a photodiode and a prism, an objective lens disposed on a base of the body for reading information recorded in a recording medium, and an actuator means for positioning the objective lens with respect to a compact disk and actuating the objective lens in a direction along an optical axis thereof. In assembling the information reading apparatus, a base of the actuator means is mounted on the body, and an objective lens suspension body including an objective lens holder and a suspension base member connected thereto through a pair of bridge members is prepared by an injection molding. The bridge members are removed after the objective lens suspension body is mounted on the base of the actuator means.

REFERENCES:
patent: 4538882 (1985-11-01), Tanaka et al.
patent: 4616355 (1986-10-01), Kashara
patent: 4817076 (1989-03-01), Van Sluys et al.
patent: 4878214 (1989-10-01), Hinotani

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