Seiko Epson Corporation

Teruyuki Nishimura

Akira Sano

Nozomu Hirokubo

Ryohei Kuri

Kei Kudo

Tomonori Matsushita

Tomoki Sakashita

Naoki Kuwata

Yasushi Matsuno

Ryoki Watanabe

Hiroshi Komatsu

Seiji Yamazaki

Susumu Shinto

Hikaru Kurasawa

An interference filter includes a transmissive first substrate including a first inner surface and a first outer surface facing each other, in which the first inner surface is provided with a first reflection film, a transmissive second substrate including a second inner surface and a second outer surface facing each other, in which the second inner surface is provided with a second reflection film, a first bonding portion configured to bond the first inner surface and the second inner surface to each other, and seal a first inner space between the first substrate and the second substrate, a transmissive third substrate facing the first outer surface, a second bonding portion configured to bond the first outer surface and the third substrate to each other, and seal a second inner space between the first substrate and the third substrate, a transmissive fourth substrate facing the second outer surface, and a third bonding portion configured to bond the second outer surface and the fourth substrate to each other, and seal a third inner space between the second substrate and the fourth substrate, wherein the first inner space, the second inner space, and the third inner space are lower in pressure than atmospheric pressure.

Interference filter, and method of manufacturing interference filter

An image processing method of converting spectral image data of a plurality of spectral wavelengths imaged by a spectral camera into a color image by using a processor, wherein the processor acquires a plurality of pieces of the spectral image data from a storage unit, calculates a correction value by multiplying a optical spectrum of each pixel of a corresponding one of the plurality of spectral image data by a correction constant set for each wavelength, calculates a color conversion value by summing the correction values of the same pixel positions, and generates a color composite image based on the color conversion value. Then, the correction constant is set such that a sum spectrum obtained by summing characteristic spectra obtained by multiplying a sensitivity characteristic with respect to each spectral wavelength of the spectral camera by the correction constant corresponding to each wavelength matches a target spectrum of any color filter.

Image processing method, and spectral camera system

An imaging apparatus includes a first camera, a second camera, a first imaging condition setting portion, and a second imaging condition setting portion. The first camera includes a color filter portion and a first light receiving portion receiving light transmitted through the color filter portion, and which captures a color imaged. The second camera includes a spectroscopic element to disperse light having a predetermined spectral wavelength from incident light and to change the spectral wavelength to four or more wavelengths, and a second light receiving portion to receive the light dispersed by the spectroscopic element and capture a spectroscopic image of each wavelength dispersed by the spectroscopic element; The first imaging condition setting portion sets a first imaging condition for the first camera. The second imaging condition setting portion sets a second imaging condition for the second camera based on the first imaging condition.

Imaging apparatus, portable terminal apparatus, and imaging method

An optical device includes an optical member having a plurality of first optical layers and a plurality of second optical layers having a refractive index different from that of the first optical layer in which the first optical layers and the second optical layers are laminated, and a layer thickness changing electrode that changes a thickness of the first optical layer in a lamination direction of the first optical layers and the second optical layers, in which the optical member is provided in a pair, and the pair of optical members is disposed to face each other through a gap, and a gap changing driver that changes a dimension of the gap.

Optical device and electronic device

An image generation apparatus includes: a spectroscopic filter switching a wavelength of transmitted image light depending on a change in distance between a pair of reflective films; an imaging element imaging the image light transmitted through the spectroscopic filter; and one or more processors, which switches the wavelength of the transmitted light to a plurality of wavelengths in forward scanning to narrow the distance between the reflective films and backward scanning to widen the distance between the reflective films, switches the wavelength of the transmitted light to wavelengths of red, green, and blue colors in the forward scanning and the backward scanning, synthesizing a color image by synthesizing spectroscopic images of the red, green, and blue colors obtained in the forward scanning performed once, and generating a color image by synthesizing spectroscopic images of the red, green, and blue colors obtained in the backward scanning performed once.

Image generation apparatus and image generation method

Provided is an optical device including a first wavelength variable interference filter in which a first reflective film and a second reflective film face each other with a first gap in between; a second wavelength variable interference filter in which a third reflective film and a fourth reflective film face each other with a second gap in between; and a first substrate having a transmissive property, which has a first surface and a second surface which is opposite in direction to the first surface, in which the second reflective film is provided on the first surface of the first substrate, and in which the third reflective film is provided on the second surface of the first substrate.

Optical device and electronic apparatus

An image processing method includes: an image pickup step of picking up an RGB image of a target object to be picked up, and picking up a spectroscopic image of the target object in a predetermined wavelength range and thus acquiring spectroscopic information peculiar to the target object in the wavelength range; and a display step of displaying a complemented image complemented by superimposing the spectroscopic information on the RGB image.

Image processing method, image processing device, and information system

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 spectroscopic camera includes an interference filter including a pair of reflection films and an imaging device that captures image light passing through the pair of reflection films. The interference filter is provided with a marker that changes the characteristic in accordance with which the image light passes, and the marker is provided in a position where the marker overlaps with the optical path of the image light that passes through the pair of reflection films.

Spectroscopic camera

A spectroscopic camera according to the present disclosure includes: a second light source; a first monochrome imaging element; a first spectral portion and a second spectral portion; and a control unit that controls operations of the second light source, the first monochrome imaging element, the first spectral portion, and the second spectral portion, the second light source and the first monochrome imaging element are disposed to be directed in the same direction, the first spectral portion is disposed between the first monochrome imaging element and the measurement target, and the second spectral portion is disposed between the second light source and the measurement target.

Spectroscopic camera and electronic device

A printer includes a spectroscope that includes a wavelength-selective interference filter on which light from a measurement target is incident and a carriage moving unit that moves the spectroscope in an X direction with respect to the measurement target. The wavelength-selective interference filter includes a pair of reflecting films and an electrostatic actuator that changes a gap dimension between the pair of reflecting films. A first spectroscopic measurement process that performs spectroscopic measurement while the gap dimension between the reflecting films is decreasing and a second spectroscopic measurement process that performs spectroscopic measurement while the gap dimension is increasing are alternately performed during the movement of the spectroscope by the carriage moving unit in the X direction.

Spectroscopic measurement device, image forming apparatus, and spectroscopic measurement method

A wavelength variable interference filter includes a fixed substrate, a movable substrate that faces the fixed substrate, a pair of reflective films, a fixed extraction electrode provided on the fixed substrate, and a movable connection electrode that is provided on the movable substrate and is in contact with the fixed extraction electrode at a connection position, in which the movable substrate includes a first groove that is provided at the connection position in a plan view in which the fixed substrate and the movable substrate are viewed from a substrate thickness direction, and a second groove that has a larger area than an area of the first groove in the plan view and is connected to the first groove.

Interference filter and MEMS element having connected first and second grooves in a moveable substrate having non-uniform thickness

A spectroscopic camera is provided with a wavelength variable interference filter including a pair of reflection films and an electrostatic actuator for changing a size of a gap between the reflection films; an imaging unit including a plurality of imaging pixels; and a filter control unit for controlling the electrostatic actuator based on light-received wavelength data in which a control amount for receiving light of a target wavelength is recorded with respect to each of the imaging pixels of the imaging unit. An acquisition order of the target wavelength emitted from the wavelength variable interference filter is set for each of the imaging pixels, and the acquisition order is set in a descending order of the driving amount of a gap, and thus a value for emitting the light of the target wavelength in the set acquisition order is recorded as the light-received wavelength data.

Spectroscopic image acquiring apparatus and spectroscopic image acquiring method

A variable wavelength interference filter includes a stationary substrate including a stationary reflecting film and a stationary electrode, and a movable substrate including a movable reflecting film and a movable electrode, the stationary electrode and the movable electrode are disposed outside an optical interference region where the stationary reflecting film and the movable reflecting film overlap each other in a filter plan view, an inner peripheral edge of the stationary electrode is located nearer to the optical interference region than an outer peripheral edge of the movable electrode, and an outer peripheral edge of the stationary electrode is located further from the optical interference region than an outer peripheral edge of the movable electrode.

Variable wavelength interference filter, optical filter device, optical module, and electronic apparatus

A variable wavelength interference filter includes: a first reflective film disposed on a face of a first substrate facing a second substrate; a second reflective film disposed on a face of the second substrate facing the first substrate and the first reflective film; a first electrode disposed on the face of the first substrate; and a second electrode disposed on the face of the second substrate. The second substrate includes a movable portion on which the second reflective film is disposed and a connection maintaining portion maintaining the movable portion to be movable in a substrate thickness direction, the connection maintaining portion circumscribes the movable portion and is thinner than the movable portion, and the second electrode is disposed on a portion of the second substrate that is thicker than the connection maintaining portion.

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Matsumoto, Japan

Teruyuki Nishimura