Browse Prior Art Database

Fabrication of an Array of Small Scanners

IP.com Disclosure Number: IPCOM000077517D
Original Publication Date: 1972-Aug-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Davis, JB: AUTHOR [+2]

Abstract

The drawings illustrate a technique for fabricating an array of small optical scanners. The body of the scanner is composed of translucent plastic which may be extruded or machined to have an end cross section, as shown in Fig. 1. The A and B dimensions of the plastic are selected to yield the proper dissipation function, depending on the dimensions of the marks and the desired final thickness of the completed scanner. The C dimension is chosen according to the spacing between successive rows of marks.

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Fabrication of an Array of Small Scanners

The drawings illustrate a technique for fabricating an array of small optical scanners. The body of the scanner is composed of translucent plastic which may be extruded or machined to have an end cross section, as shown in Fig. 1. The A and B dimensions of the plastic are selected to yield the proper dissipation function, depending on the dimensions of the marks and the desired final thickness of the completed scanner. The C dimension is chosen according to the spacing between successive rows of marks.

The extruded plastic is then overlaid with opaque plastic in a press type of operation to fill the crevices and valleys, and to yield a uniform sheet of the desired thickness, as shown in Fig. 2. Crevices D and E, when filled, serve as optical absorption barriers to prevent cross modulation between scanner elements. The sensors are mounted on the surface designated by dimension A and lamps are provided in sections F and G, which are formed in the pressing operation.

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