Patent ID: 11879717
Assignee: DISCO CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A measuring apparatus comprising:
a holding unit for holding a measurand; and
a measuring unit for measuring a height of an upper surface of the measurand held by the holding unit or a thickness of the measurand held by the holding unit, wherein the measuring unit includes:
a light source for emitting light in a predetermined wavelength band,
a first optical fiber for transmitting the light emitted from the light source,
a light-source-side branching member for branching the light transmitted by the first optical fiber to at least two rays of light, wherein an input side of the light-source-side branching member is configured and arranged for receiving only a single input and an output side of the light-source-side branching member is configured and arranged for outputting light to a plurality of outputs,
a plurality of couplers for transmitting rays of light branched from the light-source-side branching member to respective measuring optical fibers,
a head unit having a plurality of heads including respective beam condensers for converging the rays of light transmitted through the measuring optical fibers onto the measurand,
a plurality of spectroscopic-unit-side optical fibers branched from the couplers, for transmitting returning light reflected from the measurand and transmitted through the measuring optical fibers, and
a plurality of spectroscopic units associated with the respective spectroscopic-unit-side optical fibers and having respective light detectors for detecting the returning light transmitted through the respective spectroscopic-unit-side optical fibers.