Spectrometry device and image forming apparatus
AssigneeSeiko Epson Corporation
InventorsMasashi Kanai, Naoki Kuwata
Life of this patent
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Abstract
A printer incorporating a spectrometry device includes a spectroscope that includes a light receiving optical system including a light receiver which receives reflected light from a range of measurement in a medium, a distance sensor that detects the distance between the medium and the spectroscope, and a reflecting mirror driver and an optical path adjuster that adjust the optical path of the reflected light which is incident on the light receiving optical system from the range of measurement according to the distance detected by the distance sensor.
Claims18
A spectrometry device comprising:
- a spectroscope that includes a light receiving optical system including a light receiver and on which light from a measurement target is incident;
- a distance detector that detects a distance between the measurement target and the spectroscope;
- and
- a first optical path adjusting unit that adjusts an optical path of the light incident on the light receiving optical system from the measurement target according to the distance detected by the distance detector,
- wherein the light receiving optical system includes a first reflecting mirror that reflects the light incident on the light receiving optical system toward the light receiver, and
- the first optical path adjusting unit adjusts the optical path by changing an angle between a surface of the first reflecting mirror and a direction from the first reflecting mirror toward the light receiver such that the angle becomes smaller as the distance increases.
A spectrometry device comprising:
- a spectroscope that includes an illumination optical system including a light source and irradiating a measurement target with illumination light and a light receiving optical system including a light receiver and on which light reflected by the measurement target is incident;
- a distance detector that detects a distance between the measurement target and the spectroscope;
- and
- a second optical path adjusting unit that adjusts an optical path of the illumination light emitted from the light source according to the distance detected by the distance detector,
- wherein the illumination optical system includes a second reflecting mirror that reflects the illumination light from the light source toward the measurement target, and
- the second optical path adjusting unit adjusts the optical path by changing an angle between a surface of the second reflecting mirror and a direction from light source toward the second reflecting mirror such that the angle becomes smaller as the distance increases.
A spectrometry device comprising:
- a spectroscope that includes an illumination optical system including a light source and irradiating a measurement target with illumination light and a light receiving optical system including a light receiver and on which light reflected by the measurement target is incident,
- wherein the light receiver includes a light receiving region of a size in which the light reflected from a predetermined range of measurement in the measurement target is received when a distance between the measurement target and the spectroscope is in a predetermined allowable distance,
- wherein the light receiving optical system includes a first reflecting mirror that reflects the light incident on the light receiving optical system toward the light receiver, and
- an optical path of the light incident on the light receiving optical system from the measurement target is adjusted by changing an angle between a surface of the first reflecting mirror and a direction from the first reflecting mirror toward the ht receiver such that the angle becomes smaller as the distance increases.
Dependencies are inferred from the claim text.