Seiko Epson Corporation

Akira Sano

Nozomu Hirokubo

Yasushi Matsuno

Teruyuki Nishimura

Masahiro Fujii

Koji Kitahara

Susumu Shinto

Shuichi Tanaka

Shinji Kubota

Kazunori Sakurai

Tomonori Matsushita

Takashi Nagate

Seiji Yamazaki

Hideaki Kasahara

A control method of a spectroscopic imaging device including an imaging element and a spectral element, the control method includes causing the spectroscopic imaging device to generate a first measurement spectrum consisting of N1 wavelengths by imaging a target object by making output wavelengths of a spectral element different when the spectroscopic imaging device is in a high accuracy mode and causing the spectroscopic imaging device to generate a second measurement spectrum consisting of N2 wavelengths by imaging the target object by making the output wavelengths of the spectral element different when the spectroscopic imaging device is in a high speed mode, in which N1 is an integer greater than or equal to two, and N2 is an integer less than N1.

Control method of spectroscopic imaging device, spectroscopic imaging device, computer program, control method of display system, control method of projector, display system, and projector

A spectral filter module includes a spectral filter that splits light having a wavelength corresponding to an input drive voltage from incident light and outputs the light, a drive unit that outputs the drive voltage based on an input wavelength command value, and a drive controller that outputs the wavelength command value and changes the wavelength command value every time a trigger signal is input from the outside.

Spectral filter module, spectroscopic camera, and electronic device

An optical filter includes a substrate, a first reflective film provided on the substrate, a second reflective film disposed to face the first reflective film, and a supporting portion provided on the substrate and supporting the second reflective film. The first reflective film is protected with a first protective film so as not to be exposed and the second reflective film is protected with a second protective film so as not to be exposed.

Wavelength tunable optical filter, optical module, and electronic apparatus

A projection position detection device includes: a spectroscopic camera receiving light from an image pickup range including a projection image projected onto a projection target, and picking up a plurality of spectral images corresponding to different wavelengths from each other; a spectrum computation unit computing an optical spectrum of each pixel, based on the plurality of spectral images; a feature point detector detecting a feature point in the image pickup range, based on the optical spectrum of the pixel; and a projection position calculator calculating a relative position of the projection image to the feature point.

Projection position detection device, image projection system, and projection position detection method

A wavelength variable interference filter includes: a first substrate on which a first reflection film is formed; and a second substrate that includes a movable portion on which a second reflection film facing the first reflection film is formed and a holding portion surrounding an outer circumference of the movable portion and holding the movable portion so that the movable portion is displaceable in a thickness direction of the second reflection film. The movable portion has long and short sides in a plan view. The holding portion includes a long-side holding portion formed along the long side and a short-side holding portion formed along the short side. The rigidity of the short-side holding portion is lower than the rigidity of the long-side holding portion.

Wavelength variable interference filter and optical module

A wavelength tunable interference filter includes a movable section having a mirror region that faces a first mirror in a first direction and an electrode so provided in a region outside the mirror region in a plan view viewed in the first direction as to surround the mirror region along the circumferential direction thereof, the electrode configured to displace the movable section in the first direction when voltage is applied to the electrode, and the width of the electrode in the plan view varies in the circumferential direction.

Wavelength tunable interference filter, optical device, optical module, and electronic apparatus

A wavelength tunable interference filter includes a fixed substrate, a fixed reflection film that is provided on the fixed substrate, reflects part of incident light, and transmits at least part of the incident light, a movable reflection film that faces the fixed reflection film, reflects part of incident light, and transmits at least part of the incident light, and a fixed electrode that surrounds the fixed reflection film and has a light absorbing layer and a metal layer, and the light absorbing layer is disposed closer to the fixed substrate than the metal layer.

Interference filter, optical filter device, optical module, and electronic apparatus

An optical filter includes: a first substrate; a second substrate opposed to the first substrate; a first reflecting film provided to the first substrate; a second reflecting film provided to the second substrate and opposed to the first reflecting film; a first electrode provided to the first substrate in a peripheral area of the first reflecting film; a second electrode provided to the first substrate in a peripheral area of the first electrode; a third electrode provided to the second substrate and opposed to the first electrode; and a fourth electrode provided to the second substrate and opposed to the second electrode.

Optical filter including ring-shaped electrode having a slit

An etalon includes a first substrate, a second substrate facing the first substrate, a fixed mirror provided on a surface of the first substrate that faces the second substrate, a movable mirror provided on the second substrate and facing the fixed mirror via an inter-mirror gap, and a first electrode provided on the surface of the first substrate that faces the second substrate. A first multilayer stopper portion is provided by a portion of the first electrode being stacked with at least a portion of an outer circumferential edge of the fixed mirror.

Variable wavelength interference filter, optical module, and optical analysis device

A tunable interference filter includes: first and second opposed substrates; a first reflection film provided on a first reflection film fixing surface of the first substrate; a second reflection film provided on a second reflection film fixing surface of the second substrate and separated from the first reflection film by a gap; and a first electrode provided on a first electrode surface of the first substrate facing the second substrate, wherein the first electrode surface is spaced apart from the second substrate by a different distance than the first reflection film fixing surface, and a layered part in which the first reflection film and the first electrode are stacked is provided on the first electrode surface, the layered part being spaced apart from the second substrate by a larger distance than the first reflection film fixing surface.

Tunable interference filter, optical module, and electronics apparatus

An actuator drive system includes electrostatic actuators and a voltage controller that applies drive voltages to the electrostatic actuators, and the voltage controller includes a digital control device that splits an 8-bit drive variable corresponding to an overall displacement amount provided by the electrostatic actuators into 4-bit individual drive variables, a first DAC that produces a first drive voltage signal based on a first individual drive variable, and a second DAC that produces a second drive voltage signal based on a second individual drive variable.

Actuator drive system, optical module, and electronic apparatus

A spectroscopic camera is provided with a pair of reflecting films, and a wavelength variable interference filter including an electrostatic actuator which can change a size of the gap between the pair of reflecting films, an imaging unit which includes a plurality of pixels which is disposed in a two-dimensional array structure, and receives the light transmitted to the wavelength variable interference filter, and a received-light wavelength acquiring unit which acquires a central wavelength of the light which is incident on the pixel with respect to each of the pixels in the imaging unit, in which the received-light wavelength acquiring unit acquires the central wavelength based on an incidence angle in a position where the light which is received in each of the pixels is incident to the pair of reflecting films.

Spectroscopic imaging apparatus and spectroscopic imaging method

A communication system includes a transmission terminal for displaying a color code having a plurality of colors of code patterns arranged two-dimensionally, and a spectroscopic measurement device including a variable wavelength interference filter for dispersing the light from the image displayed on the transmission terminal, an imaging section adapted to image the light dispersed by the variable wavelength interference filter to obtain a spectral image, a colorimetric section adapted to measure a dispersion spectrum of each of pixels in each of spectral images of a plurality of wavelengths with respect to the color code based on the light intensity value in each of the pixels, in the case in which the spectral images are obtained, and a decode section adapted to detect an arrangement of the code patterns based on the pixel positions and the dispersion spectrums of the respective pixels, and decode the color code.

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Shiojiri, Japan

Akira Sano