Inspection illuminator
First Claim
1. An inspection illuminator, wherein a plurality of illuminant rows are provided in each of which a multiplicity of illuminants are circularly aligned so as to encircle an opening formed approximately in the center;
- a plurality of annular transparent bodies for dispersing light from the illuminants of said illuminant rows and guiding such light toward the central axis side of said opening are layered at the front part of such illuminant rows in a state of being optically shielded with a shielding means; and
the light emitting face of said transparent bodies are formed into an inclined plane, such that the upper part thereof is closer to the central axis.
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Accused Products
Abstract
The present invention provides an inspection illuminator capable of reliably detecting defects on the inspection face of articles to be inspected, while making the brightness of light uniform. In this inspection illuminator, a plurality of illuminant rows are provided, in each of which a multiplicity of illuminants 4 are circularly aligned so as to encircle an opening 1K formed approximately in the center; a plurality of annular transparent bodies 6 for dispersing light from the illuminants of the illuminant rows and guiding such light toward the central axis side of the opening 1K are layered in front of such illuminant rows in a state of being optically shielded with shielding means 7; and the light emitting faces 6A of the transparent bodies 6 are formed into an incline plane such that the upper part thereof is closer to the central axis.
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Citations
11 Claims
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1. An inspection illuminator, wherein a plurality of illuminant rows are provided in each of which a multiplicity of illuminants are circularly aligned so as to encircle an opening formed approximately in the center;
- a plurality of annular transparent bodies for dispersing light from the illuminants of said illuminant rows and guiding such light toward the central axis side of said opening are layered at the front part of such illuminant rows in a state of being optically shielded with a shielding means; and
the light emitting face of said transparent bodies are formed into an inclined plane, such that the upper part thereof is closer to the central axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- a plurality of annular transparent bodies for dispersing light from the illuminants of said illuminant rows and guiding such light toward the central axis side of said opening are layered at the front part of such illuminant rows in a state of being optically shielded with a shielding means; and
Specification