US 4,287,414 A · Illumination and pick up apparatus

Abstract

An illumination and pickup device including a lucite head with an ellipsoidally shaped wall that is covered with reflective paint. An input source of light is positioned at a first focal line of the ellipsoidal head and the emitted radiation is internally reflected to form an intense slit image at the second focal line of the head. A circularly shaped cylindrical exit portion having its axis at the second focal line is cut at the emitting end of the ellipsoidal head. A flat surface positioned adjacent to the circularly shaped cylindrical portion and in the plane of the second focal line abuts an irradiated surface and thereby defines an alignment position for the ellipsoidal head. Optical fibers are affixed adjacent the cylindrical cut-out portion to receive the light that is reflected from the irradiated surface and to carry the light to a photodetector.

Claims16

Dependent claims

Apparatus for focusing source radiation on a surface and receiving radiation which is reflected from said surface, comprising:

unitary reflecting means having at least one reflecting surface for reflecting source radiation from an input focal line to an output focal line to form an illuminating slit image at said output focal line,
alignment means forming part of said unitary reflecting means abutting said surface for aligning said reflecting means to maintain said output focal line and the associated slit image focused on said surface, and,
light receiving means mounted in fixed positional relationship to said reflecting means and spaced from said surface when said alignment means aligns said reflecting means, for receiving light which is reflected from said surface.

Dependencies are inferred from the claim text.

Illumination and pick up apparatus

Life of this patent

Illumination and pick up apparatus

Life of this patent

Abstract

Claims16