Electronic apparatus and control method of electronic apparatus

Patent metadata

Field	Value
Publication number	US-9347831-B2
Application number	US-201514630029-A
Country	US
Kind code	B2
Filing date	Feb 24, 2015
Priority date	Feb 26, 2014
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

A spectrometry device includes a wavelength variable interference filter, a filter driving unit, an imaging element which obtains color images corresponding to light with a red wavelength, light with a green wavelength, and light with a blue wavelength, respectively, and a composition unit which generates a composite image in which the red image, the green image, and the blue image are composited, the filter driving unit causes the wavelength variable filter to change the red wavelength every time when the red image is obtained, causes the wavelength variable filter to change the green wavelength every time when the green image is obtained, and causes the wavelength variable filter to change the blue wavelength every time when the blue image is obtained.

First claim

What is claimed is:

1. An electronic apparatus comprising:
a spectral filter which selectively outputs light with a predetermined wavelength from input light, and is capable of changing the wavelength of the output light;
a filter driving unit which causes the spectral filter to sequentially output light with a predetermined red wavelength which is included in a red wavelength range, light with a predetermined green wavelength which is included in a green wavelength range, and light with a predetermined blue wavelength which is included in a blue wavelength range by controlling the spectral filter;
an imaging element which receives the light output from the spectral filter, and obtains a red image corresponding to the light with the red wavelength, a green image corresponding to the light with the green wavelength, and a blue image corresponding to the light with the blue wavelength; and
a composition unit which generates a composite image in which the red image, the green image, and the blue image are composited,
wherein the filter driving unit causes the spectral filter to change the red wavelength in the red wavelength range every time when the red image is obtained by the imaging element, causes the spectral filter to change the green wavelength in the green wavelength range every time when the green image is obtained by the imaging element, and causes the spectral filter to change the blue wavelength in the blue wavelength range every time when the blue image is obtained by the imaging element.

2. The electronic apparatus according to claim 1 ,
wherein the filter driving unit causes the spectral filter to change the red wavelength, the green wavelength, and the blue wavelength in a predetermined threshold value.

3. The electronic apparatus according to claim 1 ,
wherein the filter driving unit causes the spectral filter to sequentially change a wavelength of light which is output from the spectral filter from a maximum wavelength to a minimum wavelength, after sequentially changing the wavelength of the light from the preset minimum wavelength to the preset maximum wavelength with respect to each wavelength range of the red wavelength range, the green wavelength range, and the blue wavelength range.

4. The electronic apparatus according to claim 1 , further comprising:
a correction unit in which a grayscale value of at least one of the plurality of composite images obtained by capturing images of the same imaging target is corrected, and a difference in grayscale value between the plurality of composite images is set so as to be within a range of a predetermined second threshold value.

5. The electronic apparatus according to claim 1 , further comprising:
a storage unit which stores each wavelengths which is set by the filter driving unit, and each images which is captured by the imaging element with respect to each of the wavelengths; and
an analysis processing unit which performs spectrometry of an imaging target using the each images with respect to each wavelengths.

6. The electronic apparatus according to claim 5 , further comprising:
a detection unit which detects a change of the imaging target between the color images corresponding to the same wavelength range among each of color images of the red images, the green images, and the blue images which are stored in the storage unit.

7. A control method of an electronic apparatus which includes a spectral filter which selectively outputs light with a predetermined wavelength from input light, and is capable of changing the wavelength of the output light; a filter driving unit which causes the spectral filter to output light with a predetermined wavelength by controlling the spectral filter; an imaging element which obtains a color image by receiving color light which is output from the spectral filter; and an image generation unit which generates a composite image using the color image which is obtained using the imaging element, the method comprising:
obtaining a red image corresponding to light with a red wavelength, a green image corresponding to light with a green wavelength, and a blue image corresponding to light with a blue wavelength using the imaging element, by sequentially outputting light with a predetermined red wavelength which is included in a red wavelength range, light with a predetermined green wavelength which is included in a green wavelength range, and light with a predetermined blue wavelength which is included in a blue wavelength range from the spectral filter;
changing the red wavelength in the red wavelength range every time when the red image is obtained;
changing the green wavelength in the green wavelength range every time when the green image is obtained;
changing the blue wavelength in the blue wavelength range every time when the blue image is obtained; and
generating a composite image in which obtained the red image, the green image, and the blue image are composited.

Assignees

• Seiko Epson Corp

Inventors

• Funamoto Tatsuaki

Classifications

• G01J2003/2826

  Multispectral imaging, e.g. filter imaging · CPC title

• G01J3/2823 Primary

  Imaging spectrometer · CPC title

• G01J3/12

  Generating the spectrum; Monochromators · CPC title

• G01J2003/1213

  Filters in general, e.g. dichroic, band · CPC title

• G01J3/26

  using multiple reflection, e.g. Fabry-Perot interferometer, variable interference filters · CPC title