Optical verification device

Claim 2

An optical verification device which comprises: a. a mounting strip adapted for attachment to items to be automatically selected; b. said mounting strip including latching means for releasably securing said strip to said item; c. a plurality of reflective elements mounted in a linear closely spaced array on said strip with their reflective surfaces lying substantially in the same plane; d. each reflective elemented mounted on said strip by an easily frangible web, whereby selected reflective elements may be easily removed to produce an array of coded reflective and nonreflective areas.

Claim 3

The device according to claim 1 wherein at least said reflective surfaces are coated with a thin, highly reflective layer of aluminum.

Claim 4

The device according to claim 1 wherein said mounting strip latching means includes at least one projecting lug adapted to engage a corresponding hole in said item to releasably secure said strip to said item.

Claim 5

In a slide verification system which includes a plurality of adjacent projection slides, a verification area along the edge of each slide having a coded linear array of reflective and non-reflective elemental areas, and a detector movable relative to said verification area which comprises a light source directing light against said verification areas and a plurality of photo-electric detectors to detect the reflection or non-reflection of light from each of said elemental areas; the improvement wherein said verification area comprises a mounting strip removably attached to said slide edge by a releasable latch means, a plurality of reflective elements mounted on said strip in a linear closely spaced array substantially parallel to said slide edge; each reflective element being connected to said strip by an easily frangible web, whereby selected reflective elements may be easily removed to produce the desired coded array of reflective and non-reflective elemental areas.

Claim 6

In a slide verification system which includes a plurality of adjacent projection slides, a verification area along the edge of each slide having a coded linear array of reflective and non-reflective elemental areas, and a detector movable relative to said verification area which comprises a light source directing light against said verification areas and a plurality of photo-electric detectors to detect the reflection or non-reflection of light from each of said elemental areas; the improvement wherein said verification area comprises a mounting strip removably attached to said slide edge by a releasable latch means, a plurality of reflective elements mounted on said strip in a linear closely spaced array substantially parallel to said slide edge; each reflective element being connected to said strip by an easily frangible web, whereby selected reflective elements may be easily removed to produce the desired coded array of reflective and non-reflective elemental areas.

Claim 7

The improvement according to claim 4 wherein at least the surface of said reflective elements are coated with a thin highly reflective layer of aluminum.

Claim 8

The improvement according to claim 4 wherein said latch means includes at least one projecting lug on said strip each lug having an enlarged head adapted to releasably engage a corresponding hole in said slide edge.

Claim 9

A projection slide comprising: a. a unitary substantially planar slide including a slide frame surrounding a transparent film support sheet; b. means to hold a film transparency in contact with said support sheet; c. interlocking means for releasably attaching a verification device to said slide frame along one outer edge thereof; d. said verification device including a mounting strip holding a plurality of reflective elements in a linear closely spaced array, the reflective surfaces lying suBstantially in a single plane and visible from a viewpoint outside said frame substantially in the plane of said frame. e. each of said reflective elements being connected to said strip by an easily frangible web, whereby selected reflective elements may be easily removed to produce a desired coded array of reflective and non-reflective elemental areas.

Claim 10

A projection slide comprising: a. a unitary substantially planar slide including a slide frame surrounding a transparent film support sheet; b. means to hold a film transparency in contact with said support sheet; c. interlocking means for releasably attaching a verification device to said slide frame along one outer edge thereof; d. said verification device including a mounting strip holding a plurality of reflective elements in a linear closely spaced array, the reflective surfaces lying suBstantially in a single plane and visible from a viewpoint outside said frame substantially in the plane of said frame. e. each of said reflective elements being connected to said strip by an easily frangible web, whereby selected reflective elements may be easily removed to produce a desired coded array of reflective and non-reflective elemental areas.

Claim 11

The slide according to claim 7 wherein the plane of said reflective surfaces is substantially perpendicular to the plane of said slide and at least said reflective surfaces are coated with a thin highly reflective aluminum layer.

Claim 12

The slide according to claim 7 wherein said interlocking means includes a plurality of lugs extending outwardly from said strip, each of said lugs having an enlarged head, each lug adapted to releasably latch within a corresponding hole in said slide frame edge.