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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-5858163-A, on 12 January 1999. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000003196

Apparatus for making ophthalmic lenses by vacuum lamination

Published
Permanent URL
Classification
Lifting, Positioning & Manipulation › Vacuum Lifting
Assignee
GERBER OPTICAL INC
Original source
US-5858163-A, the United States Patent and Trademark Office, 12 January 1999
Document SHA-256
5cf45398e765ae14bda4565188416993137fe508ca099a3ac46b30913dcc1cbd

An apparatus is provided for making ophthalmic lenses by vacuum lamination wherein a front lens wafer is laminated to a back lens wafer with a layer of adhesive disposed within the interface between the two wafers forming a composite lens. An upper flexible, transparent sheet is located on the top side of the composite lens, a lower flexible, opaque or transparent sheet is located on the bottom side of the composite lens, and a seam is formed between the upper and lower flexible sheets which defines an evacuation chamber between the sheets for receiving the composite lens. A vacuum pump is connected in fluid communication with the evacuation chamber for evacuating air from the chamber and in turn drawing the upper and lower flexible sheets into engagement with the top and bottom sides of the composite lens, respectively, to press the lens wafers together and spread the adhesive throughout the wafer interface. A UV lamp is mounted above the composite lens for transmitting UV radiation through the upper flexible sheet and into the adhesive layer to cure the adhesive and form the composite lens.

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Abstract

An apparatus is provided for making ophthalmic lenses by vacuum lamination wherein a front lens wafer is laminated to a back lens wafer with a layer of adhesive disposed within the interface between the two wafers forming a composite lens. An upper flexible, transparent sheet is located on the top side of the composite lens, a lower flexible, opaque or transparent sheet is located on the bottom side of the composite lens, and a seam is formed between the upper and lower flexible sheets which defines an evacuation chamber between the sheets for receiving the composite lens. A vacuum pump is connected in fluid communication with the evacuation chamber for evacuating air from the chamber and in turn drawing the upper and lower flexible sheets into engagement with the top and bottom sides of the composite lens, respectively, to press the lens wafers together and spread the adhesive throughout the wafer interface. A UV lamp is mounted above the composite lens for transmitting UV radiation through the upper flexible sheet and into the adhesive layer to cure the adhesive and form the composite lens.

1. Drawings

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[0002]Sheet 2.

[0003]Sheet 3.

Publication information

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Citation

OpenTechnical Publication OT-2026-000003196, “Apparatus for making ophthalmic lenses by vacuum lamination,” published September 15, 2026 at 19:47:22 UTC, https://opentechnical.org/p/OT-2026-000003196.

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