Lens/mirror tower for an optical storage device

Details Lens/mirror tower for an optical storage device Lens/mirror tower for an optical storage device

1993-06-18

1995-09-19

Dzierzynski, Paul M.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369119, 369121, 369 4412, 369 36, G11B 7085

Patent

active

054522838

ABSTRACT:
A lens/mirror tower (LMT) of a multiple-disk array, optical storage system includes a plurality of lens and mirror elements integrally formed on a monolithic, optically-clear substrate. There is a specific lens/mirror set for each recording disk surface of the optical storage device; however, the mirror elements are preferably configured as one reflective surface of the substrate. The lenses are molded onto the opposite surface in a single operation that fixes their relative positions. The LMT is generally fabricated using a lens replication process. Initially, a glass substrate is formed with a trapezoidal configuration. A lens array mold is also formed with a plurality of cavities arranged in overlapping pairs. The cavities are filled with optical-quality resin and the mold is applied to the surface of the substrate opposing the reflective angular, e.g., 45.degree., surface. Once cured, the resin serves as an array of lenses that are aligned with the optical paths to the objective lenses of the disk array.

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patent: 4983335 (1991-01-01), Matsuo et al.
patent: 4999142 (1991-03-01), Fukushima et al.
patent: 5260928 (1993-11-01), Lee et al.

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