Photoelectric sensor with deflection angle adjustment arrangement
First Claim
1. A photoelectric sensor comprising:
- a light projecting section projecting detection medium light to a detection object region; and
a light receiving section receiving reflecting light or transmitted light from the detection object region, the sections being in a single piece or in separate pieces, wherein the light projecting section includes;
a light source generating the detection medium light;
a light projecting lens for collimating or collecting the detection medium light from the light source to form a beam spot or a light collecting point in the detection object region;
a transparent light transmissive element interposed between the light source and the light projecting lens; and
a deflection angle adjusting arrangement capable of finely adjusting an optical axis deflection angle of the detection medium light projected to the detection object region from the light projecting section, the deflection angle adjusting arrangement being arranged such that at least one of the light source, the light projecting lens and the transparent light transmissive element, is movable with respect to another of the light source, the light projecting lens and the transparent light transmissive member.
1 Assignment
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Accused Products
Abstract
A photoelectric sensor includes: a light projecting section projecting detection medium light to a detection object region; and a light receiving section receiving reflecting light or transmitted light from the detection object region, the sections being in a single piece or in separate pieces. The light projecting section includes: a light source generating the detection medium light; and a light projecting lens for collimating or collecting the detection medium light from the light source to form a beam spot or a light collecting point in the detection object region. The light projecting section further includes: a deflection angle adjusting unit capable of finely adjusting an optical axis deflection angle of the detection medium light projected to the detection object region from the light projecting section.
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Citations
16 Claims
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1. A photoelectric sensor comprising:
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a light projecting section projecting detection medium light to a detection object region; and a light receiving section receiving reflecting light or transmitted light from the detection object region, the sections being in a single piece or in separate pieces, wherein the light projecting section includes; a light source generating the detection medium light; a light projecting lens for collimating or collecting the detection medium light from the light source to form a beam spot or a light collecting point in the detection object region; a transparent light transmissive element interposed between the light source and the light projecting lens; and a deflection angle adjusting arrangement capable of finely adjusting an optical axis deflection angle of the detection medium light projected to the detection object region from the light projecting section, the deflection angle adjusting arrangement being arranged such that at least one of the light source, the light projecting lens and the transparent light transmissive element, is movable with respect to another of the light source, the light projecting lens and the transparent light transmissive member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A photoelectric sensor comprising:
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a light projecting section projecting detection medium light to a detection object region; and a light receiving section receiving reflecting light or transmitted light from the detection object region, the sections being in a single piece or in separate pieces, wherein the light projecting section includes; a light source generating the detection medium light; a light projecting lens for collimating or collecting the detection medium light from the light source to form a beam spot or a light collecting point in the detection object region; and deflection angle adjusting means capable of finely adjusting an optical axis deflection angle of the detection medium light projected to the detection object region from the light projecting section, wherein the deflection angle adjustment means is a plane-parallel glass plate, interposed in an optical path between the light source and the light projecting lens, and supported rotatably about an axis orthogonal to the optical path. - View Dependent Claims (12)
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13. A photoelectric sensor comprising:
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a sensor head case having a light projecting window in the front surface; and a selectively interchangeable option unit, capable of being mounted in a selectively mountable/demountable manner at the front surface of the sensor head case, and holding a light beam changing lens at a position aligned with the light projecting window by way of a lens holder, wherein the sensor head case contains; a light source generating detection object light; a light projecting lens collecting the detection medium light from the light source to emit the detection medium light from the light projecting window; a transparent light transmissive element which is interposed between the light source and the light projecting lens; and light beam adjusting arrangement for performing distance adjustment of a light collecting point of light emitted from the light projecting window said light beam adjusting arrangement comprising a device for moving at least of the light source, the light projecting lens and the transparent light transmissive element, with respect to another of the light source, the light projecting lens and the transparent light transmissive element. - View Dependent Claims (14, 15, 16)
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Specification