Patent ID: 11892398
Assignee: TOYOKO KAGAKU CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. A sensor for determining a liquid type, comprising:
a plano-convex lens;
a lens holder configured to support the plano-convex lens via an edge of the lens, the edge extending in a straight line orthogonal to a plane surface of the plano-convex lens, and the lens holder being flush with an entirety of the edge extending in the straight line;
an outputting optical fiber that abuts against a the plane surface of the plano-convex lens to output light;
a light-receiving optical fiber that abuts against the plane surface of the plano-convex lens to receive light;
a light-emitting unit connected to the outputting optical fiber; and
a light amount measuring unit connected to the light-receiving optical fiber to measure a light amount, wherein
the outputting optical fiber is provided so that an end face of the outputting optical fiber is disposed on one end of the edge of the plano-convex lens, and
the light amount measuring unit includes a level display unit configured to emit light with different colors in accordance with the light amount.