Sensor for determining liquid types

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 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,
• a central axis of the outputting optical fiber at the end face thereof passes through the plane surface of the plano-convex lens, and
• the sensor further comprises a reflector provided to be opposed to a convex surface of the plano-convex lens.

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 sensor further comprises a bracket to which the lens holder is fit, the bracket having a channel or a slant surface for guiding a liquid falling onto an upper surface of the bracket to an area under a convex surface of the plano-convex lens.

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
• a central axis of the outputting optical fiber at the end face thereof passes through the plane surface of the plano-convex lens, and
• the sensor further comprises a bracket to which the lens holder is fit, the bracket having a channel or a slant surface for guiding a liquid falling onto an upper surface of the bracket to an area under a convex surface of the plano-convex lens.

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.

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
• a central axis of the outputting optical fiber at the end face thereof passes through the plane surface 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.