# US 2014/0192077 A1 · Image display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192077 A1 - Document ID: US20140192077A1 - Status: Published application - Kind: A1 - Application number: 14/149,176 - Filed: 2014-01-07 - Published: 2014-07-10 - Earliest claimed: 2013-01-07 - Assignees: Seiko Epson Corporation - Applicants: Seiko Epson Corporation - Inventors: Tsugio GOMI; Kazunori SAKURAI - Web page: https://patentgrep.com/patent/US20140192077A1 ## CPC - G09G 5/02: characterised by the way in which colour is displayed {(details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607)} - G06F 1/1601: {Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays (constructional details related to flat displays integrated in a portable computer, e.g. laptop, handheld computer G06F1/1637; constructional details related to television receivers H04N5/64)} - G09G 2320/0693: Calibration of display systems - G09G 2360/144: the light being ambient light - G09G 2360/145: the light originating from the display screen - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract An image display device includes a display section adapted to display an image, a photometric section including a variable wavelength interference filter adapted to transmit light with a predetermined wavelength from incident light and a photosensor adapted to detect light obtained by dispersion, and disposed so as to be opposed to the display section, and a control section adapted to control the display section and the photometric section, and the control section obtains a spectrum of the incident light based on light intensity of the light detected by the photosensor, and then performs a color correction of the display section based on the spectrum. ## Claims ### Claim 1 An image display device comprising: a display section adapted to display an image; a photometric section having a spectroscopic element adapted to disperse incident light, and a detection section adapted to detect light obtained by the dispersion, and disposed so as to be opposed to the display section; and a control section adapted to control the display section and the photometric section, wherein the control section obtains a spectrum of the incident light based on light intensity of the light obtained by the dispersion detected by the detection section, and then performs a color correction of the display section based on the spectrum. ### Claim 2 (depends on 1) The image display device according to claim 1, wherein the spectroscopic element is a variable wavelength etalon, which includes a first reflecting film adapted to reflect a part of the incident light and transmit a part of the incident light, and a second reflecting film disposed so as to be opposed to the first reflecting film, and adapted to reflect apart of the incident light and transmit apart of the incident light, and makes the light entering a space between the first reflecting film and the second reflecting film interfere with each other to take out light with a specific wavelength. ### Claim 3 (depends on 2) The image display device according to claim 2, wherein the spectroscopic element includes a first substrate provided with the first reflecting film, a second substrate opposed to the first substrate and provided with the second reflecting film, and a gap changing section adapted to change a gap dimension between the first reflecting film and the second reflecting film. ### Claim 4 (depends on 1) The image display device according to claim 1, wherein the photometric section includes an incident angle limiting unit adapted to limit an angle of the incident light entering the spectroscopic element. ### Claim 5 (depends on 4) The image display device according to claim 4, wherein the incident angle limiting unit is at least one light blocking plate, which is disposed between the display section and the spectroscopic element, and has a light passage hole disposed at a position overlapping the spectroscopic element in a plan view viewed from a direction perpendicular to a display surface of the display section. ### Claim 6 (depends on 5) The image display device according to claim 5, wherein the incident angle limiting unit is a plurality of the light blocking plates. ### Claim 7 (depends on 4) The image display device according to claim 4, wherein the incident angle limiting unit includes an incident angle limiting film disposed between the spectroscopic element and the display section. ### Claim 8 (depends on 1) The image display device according to claim 1, wherein the display section includes a display area adapted to display the image, and a bezel section surrounding the display area, and the photometric section is disposed so as to be able to retractably proceed from the bezel section to the display area.