Optical sensor for detecting lubricant deterioration
First Claim
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1. An optical sensor, comprising:
- a light emitting element for emanating light;
a light receiving element for detecting the light, disposed adjacent to the light emitting element;
a clearance forming member including a first reflection surface, a second reflection surface, and a fluid clearance in which a fluid enters;
a support member supporting the light emitting element, the light receiving element and the clearance forming member;
an optical path surrounding member, whereinthe clearance forming member is transmissive so that the light emitted from the light emitting element transmits therethrough,the fluid clearance is provided on an optical path from the light emitting element to the light receiving element such that light reflected from the first reflection surface passes through the fluid clearance before reaching the second reflection surface, andthe optical path surrounding member surrounds at least a portion of the optical path.
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Abstract
A lubricant deterioration sensor mounted in a machine to detect deterioration of a lubricant of the machine, the sensor comprising a white LED for emanating white light, an RGB sensor that detects colors of received light, a clearance forming member in which an oil clearance for intrusion of the lubricant is formed, and a support member that supports the white LED, the RGB sensor, and the clearance forming member; and wherein the clearance forming member allows passage of the light emitted from the white LED, and the oil clearance is placed along an optical path from the white LED to the RGB sensor.
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Citations
12 Claims
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1. An optical sensor, comprising:
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a light emitting element for emanating light; a light receiving element for detecting the light, disposed adjacent to the light emitting element; a clearance forming member including a first reflection surface, a second reflection surface, and a fluid clearance in which a fluid enters; a support member supporting the light emitting element, the light receiving element and the clearance forming member; an optical path surrounding member, wherein the clearance forming member is transmissive so that the light emitted from the light emitting element transmits therethrough, the fluid clearance is provided on an optical path from the light emitting element to the light receiving element such that light reflected from the first reflection surface passes through the fluid clearance before reaching the second reflection surface, and the optical path surrounding member surrounds at least a portion of the optical path. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An optical sensor, comprising:
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a light emitting element that emits a light; a light receiving element that detects the light; a transmissive part that includes an incident surface to which the light is incident from the light emitting element and an exit surface from which the light incident on the incident surface exits, and defines a gap, into which a lubricant enters, in an optical path from the incident surface to the exit surface; and a first narrowing part that narrows the optical path from the light emitting element to the incident surface. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification