# US 10,864,998 B2 · Spectral camera control device and method for controlling spectral camera > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,864,998 B2 - Document ID: US10864998B2 - Status: Granted - Kind: B2 - Application number: 16/093,624 - Filed: 2017-03-22 - Published: 2019-04-25 - Granted: 2020-12-15 - Earliest claimed: 2016-04-14 - Assignees: National University Corporation Hokkaido University - Applicants: National University Corporation Hokkaido University - Inventors: Yukihiro Takahashi; Junichi Kurihara; Tetsuro Ishida - Web page: https://patentgrep.com/patent/US10864998B2 ## CPC - G01J 3/51: using colour filters - B64C 27/04: Helicopters - B64U 20/87: Mounting of imaging devices, e.g. mounting of gimbals - G01J 3/027: {Control of working procedures of a spectrometer; Failure detection; Bandwidth calculation} - G01J 3/0278: {Control or determination of height or angle information for sensors or receivers} - G01J 3/0289: {Field-of-view determination; Aiming or pointing of a spectrometer; Adjusting alignment; Encoding angular position; Size of measurement area; Position tracking} - G01J 3/12: Generating the spectrum; Monochromators - G01J 3/2823: {Imaging spectrometer} - G01J 3/32: Investigating bands of a spectrum in sequence by a single detector - G01N 21/31: Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry {(G01N21/72 takes precedence)} - G02F 1/13: based on liquid crystals, e.g. single liquid crystal display cells - G02F 1/133509: {Filters, e.g. light shielding masks} - B64U 10/13: Flying platforms - B64U 50/30: Supply or distribution of electrical power - B64U 2101/30: for imaging, photography or videography - G01J 2003/1213: {Filters in general, e.g. dichroic, band} - G01J 2003/1269: {Electrooptic filter} - G01J 2003/2826: {Multispectral imaging, e.g. filter imaging} - G01J 2003/283: {computer-interfaced} - G01J 2003/284: {Spectral construction} - G01N 2021/1797: {in landscape, e.g. crops} - G01N 2201/0214: Airborne - H04N 23/11: for generating image signals from visible and infrared light wavelengths - G01J: MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N) - B64C: AEROPLANES; HELICOPTERS - B64U: UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract [Problem] To provide a spectral camera control device, a spectral camera control program, a spectral camera control system, an aircraft equipped with said system, and a spectral image capturing method, with which it is possible for each of a spatial resolution and an exposure time for spectral image capture to be set arbitrarily, and with which spatial distortion and displacement of the spectral image can be suppressed. [Solution] This spectral camera control device is installed together with a spectral camera 3 provided with a liquid crystal tunable filter 33 in an aircraft 1 capable of stationary flight, and causes the spectral camera 3 to capture an image in a snapshot mode each time the transmission wavelength of the liquid crystal tunable filter 33 is switched while the aircraft 1 is in stationary flight. ## Claims ### Claim 1 A spectral camera control device, being installed, along with a spectral camera provided with a liquid crystal tunable filter, in an aircraft capable of stationary flight, wherein the spectral camera control device causes the spectral camera to capture an image in a snapshot mode each time a transmission wavelength of the liquid crystal tunable filter is switched while the aircraft is in stationary flight, and wherein the spectral camera control device sets an exposure time of the spectral camera to a shorter time than a current exposure time when either one of an amount of attitude change and an amount of position change of the spectral camera per exposure time in the spectral camera exceeds a predetermined threshold based on a spatial resolution of the spectral camera, an angular velocity of the spectral camera may be acquired from an attitude sensor to calculate the exposure time by Formula (1) shown below: T