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US 12,192,610 B2Granted
Imaging device with illumination unit featuring light shielding component
AssigneeKowa Company, Ltd.
InventorsTakao Ushiyama, Eiji Takahashi
Life of this patent
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Abstract
An imaging device according to the present invention includes an illumination unit 20 containing a light source 21 for emitting illumination light 2, and a lens group 22 for irradiating an imaging object 1 with the illumination light 2 emitted from the light source 21, and an imaging unit 10 for imaging the imaging object 1. A part of the illumination light 2 is shielded by a light shielding component 40.
Claims8
An imaging device comprising:
- an illumination unit including a light source for emitting illumination light, and a lens group for irradiating an imaging object with the illumination light emitted from the light source;
- and
- an imaging unit for imaging the imaging object, wherein the illumination unit is provided with a light shielding component for shielding against a part of the illumination light emitted from the light source;
- wherein the illumination unit includes, in the lens group, a condenser lens for converging the illumination light from the light source, and an illumination system lens for irradiating the imaging object with the illumination light transmitted through the condenser lens;
- and
- a position which is optically conjugated with the imaging object is set in an intermediate portion between the condenser lens and the illumination system lens, and the condenser lens includes a plurality of lenses;
- and
- the light shielding component is arranged between the plurality of lenses constituting the condenser lens in no contact with the surfaces of the plurality of lenses.
5 more elements
An imaging device comprising:
- an illumination unit including a light source for emitting illumination light, and a lens group for irradiating an imaging object with the illumination light emitted from the light source;
- and
- two imaging units for imaging the imaging object, wherein the illumination unit is provided with a light shielding component for shielding against a part of the illumination light emitted from the light source;
- wherein the illumination unit is disposed between the two imaging units, the light shielding component includes a light shielding pattern, and the light shielding pattern includes a central light shielding portion for shielding a central portion of a cross-section perpendicular to an optical axis of the illumination light emitted from the light source against the illumination light.
1 more element
Dependencies are inferred from the claim text.