Lens mounting for an electrodynamic device for recording on and/

Details Lens mounting for an electrodynamic device for recording on and/ Lens mounting for an electrodynamic device for recording on and/

1987-05-20

1989-01-17

Corbin, John K

Plastic and nonmetallic article shaping or treating: processes

Outside of mold sintering or vitrifying of shaped inorganic...

Including plural heating steps

264251, 350320, 350417, 369 44, 369 45, 425125, G02B 702

Patent

active

047984473

ABSTRACT:
The invention relates to a lens mounting (11) for an electrodynamic device for recording and/or reading information in and/or from optically readable discs, which device comprises a frame with supporting means for guiding the lens mounting. The lens mounting comprises a first part (27) which cooperates with said supporting means and a second part (31) which is movable relative to said first part and which comprises the mount (32) for a lens system for focusing a radiation beam. The lens mounting (11) further comprises connecting means (33A, 33B and 35) which movably connect the first and the second part to each other. Respective opposite ends of the connecting means are embedded in the first part and the second part of the lens mounting by injection molding into a molding which is configured so that the relative position of the first and second parts are defined by the corresponding portions of one molding die.

REFERENCES:
patent: 2288899 (1942-07-01), Gits
patent: 3334409 (1967-08-01), Shneider et al.
patent: 3476851 (1969-11-01), Camossi
patent: 3542328 (1970-11-01), Deitrick
patent: 4154506 (1979-05-01), Yevick
patent: 4443721 (1984-04-01), Jansen
patent: 4472024 (1984-09-01), Konomura
patent: 4504935 (1985-03-01), Jansen
Rubin, I. I., "Injection Moulding Theory & Practice", John Wiley & Sons, 1972, pp. 142-147, 446-448.
Smirnov et al., "Experience in Injection Moulding of Lenses From Polymethylmethacrylate", Sov. Jr. Optical Technology, 2-1972, pp. 94-97.

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