Abstract: An image display apparatus according to the present invention includes: an acquisition unit configured to acquire a size of a flat region on the basis of an input image, this flat region, from among regions of the input image, being a region in which a change in gradation value in a spatial direction of the image is small; and an image processing unit configured to perform unevenness reduction processing on the input image, this unevenness reduction processing reducing at least one of brightness unevenness and color unevenness of a screen at a higher reduction degree as the flat region is larger in size.

Abstract: A reflection property measuring device comprising illumination light and reflected light polarizing plates held by a holder in a mutually superposed state in a thickness direction thereof, wherein the holder has a fittingly-holding portion for setting a held posture, and each of the polarizing plates has a fitting portion fittable to the fittingly-holding portion. The fitting portions of the polarizing plates are provided at positions allowing the polarizing plates to be held by the holder in respective postures where polarizing directions thereof intersect orthogonally. A manufacturing method is disclosed for polarizing plates used in the device, wherein the illumination light and reflected light polarizing plates are manufactured in such a manner as to be punched out from the same polarizing plate material.

Abstract: An image display apparatus includes a light-emitting unit, a display unit configured to modulate light from the light-emitting unit, a light-emission control unit configured to control light emission of the light-emitting unit, a display control unit configured to execute display processing for displaying images for calibration in order, an acquiring unit configured to acquire a measurement value of light emitted from a region, of a screen, where the image for calibration is displayed, and a calibrating unit configured to execute a calibration on the basis of measurement values of the images, wherein when a light emission state of the light-emitting unit changes during the execution of the display processing, the display control unit executes the display processing again.

Abstract: A calibration apparatus comprises: a determination unit configured to determine, for each of a plurality of calibration images, which one of a plurality of subranges to which a characteristic value of the calibration image belongs; a display unit configured to simultaneously display, on a display apparatus, two or more calibration images of which the characteristic values are determined to belong to same subrange; an acquisition unit configured to acquire a calibration measurement value, which is a measurement value representing at least a display brightness or a display color of the calibration image; and a calibration unit configured to execute calibration of the display apparatus based on the calibration measurement value acquired by the acquisition unit.

Abstract: A selected divided light-emitting region, from a plurality of divided light-emitting regions, emits light in a light emitting unit and adjusts the light emission amount for each of the plurality of divided light-emitting regions based on the light emission amount detected by a detection unit.

Abstract: An image display apparatus includes: a plurality of light emitting units; a display panel; a first acquisition unit configured to acquire brightness information, a first control unit configured to determine light emission quantity for each of the light emitting units; a second acquisition unit configured to acquire a detected value of light from a predetermined region; a first determination unit configured to determine whether a change due to a difference of the light emission quantity between the light emitting units is generated in the light from the predetermined region; a calibration unit configured to perform calibration of display characteristics; and a second control unit configured to control the calibration on the basis of a determination result of the first determination unit.

Abstract: Included are a backlight having a plurality of light emitting blocks, a display panel, a calibration unit which carries out calibration of the display panel based on a result of measurement of the brightness and chromaticity of the display panel, a first measuring unit which measures individual temperatures of the plurality of light emitting blocks, a setting unit which sets a patch image display area in a region of the display panel corresponding to a light emitting block of which the magnitude of a change in temperature within a predetermined period of time is smaller than a threshold value, and a generation unit which generates a patch image to be displayed in the patch image display area, wherein the calibration unit carries out the calibration based on the result of measurement by the first measuring unit in cases where the patch image is displayed in the patch image display area.

Abstract: The control unit provided in the image processing apparatus determines, based on the measurement result obtained by the time measurement unit, whether or not a change timing of external light detected and determined by the external light detection unit and the external light change determination unit is before a predetermined time has elapsed since the input switching detection unit detected the switching process. When the change timing of external light is before a predetermined time threshold value Th1 has elapsed as a result of the determination, the control unit provides instructions to the image processing unit about executing image quality adjustment processing while increasing the adjustment amount per unit time.

Abstract: A selected divided light-emitting region, from a plurality of divided light-emitting regions, emits light in a light emitting unit and adjusts the light emission amount for each of the plurality of divided light-emitting regions based on the light emission amount detected by a detection unit.

Abstract: Included are a backlight having a plurality of light emitting blocks, a display panel, a calibration unit which carries out calibration of the display panel based on a result of measurement of the brightness and chromaticity of the display panel, a first measuring unit which measures individual temperatures of the plurality of light emitting blocks, a setting unit which sets a patch image display area in a region of the display panel corresponding to a light emitting block of which the magnitude of a change in temperature within a predetermined period of time is smaller than a threshold value, and a generation unit which generates a patch image to be displayed in the patch image display area, wherein the calibration unit carries out the calibration based on the result of measurement by the first measuring unit in cases where the patch image is displayed in the patch image display area.

Abstract: An optical property measurement apparatus includes: a main body which includes a plane-shape surface that is so disposed as to face the display portion; an optical sensor which receives light directed from an opening that is formed through the plane-shape surface; and a support portion which is disposed on a side of the plane-shape surface and keeps a constant distance between the display portion and the plane-shape surface; wherein a light shield portion that is so disposed as to enclose a circumferential area of the opening of the plane-shape surface and shields entrance of light from a region other than a measurement target region of the display portion when the optical property is measured.

Abstract: A spectral characteristic measuring apparatus includes: an illuminating section for irradiating illumination light onto a sample; a spectral section for separating light from the sample irradiated with the illumination light into light rays in accordance with wavelengths; a light receiving section including a plurality of light receiving elements for receiving the light rays separated by the spectral section in accordance with wavelengths, and converting the received light rays into electrical output signals; and a storing section for storing a combined central wavelength of each of the light receiving elements calculated in advance based a spectral intensity distribution of the illumination light.

Abstract: The control unit provided in the image processing apparatus determines, based on the measurement result obtained by the time measurement unit, whether or not a change timing of external light detected and determined by the external light detection unit and the external light change determination unit is before a predetermined time has elapsed since the input switching detection unit detected the switching process. When the change timing of external light is before a predetermined time threshold value Th1 has elapsed as a result of the determination, the control unit provides instructions to the image processing unit about executing image quality adjustment processing while increasing the adjustment amount per unit time.

Abstract: A liquid crystal display, comprising: a liquid crystal display portion for inputting a video signal to display an image thereon; a backlight provided on a rear side of the liquid crystal display portion, for illuminating the liquid crystal display portion from a rear surface thereof; a backlight driver portion for driving the backlight, also having a light control function for controlling a light intensity of the illuminating lights from that backlight; a feature detector portion for detecting an averaged brightness of the video signal, and also a histogram of brightness or a color, upon basis of said video signal inputted; and a light intensity control portion for controlling the light intensity of the illuminating lights from the backlight, through the light control function of the backlight driver portion, upon basis of the histogram of brightness or color, as well as, the averaged brightness of the video signal detected by the feature detector portion.

Abstract: An optical property measurement apparatus includes: a main body which includes a plane-shape surface that is so disposed as to face the display portion; an optical sensor which receives light directed from an opening that is formed through the plane-shape surface; and a support portion which is disposed on a side of the plane-shape surface and keeps a constant distance between the display portion and the plane-shape surface; wherein a light shield portion that is so disposed as to enclose a circumferential area of the opening of the plane-shape surface and shields entrance of light from a region other than a measurement target region of the display portion when the optical property is measured.

Abstract: A spectral characteristic measuring apparatus includes: an illuminating section for irradiating illumination light onto a sample; a spectral section for separating light from the sample irradiated with the illumination light into light rays in accordance with wavelengths; a light receiving section including a plurality of light receiving elements for receiving the light rays separated by the spectral section in accordance with wavelengths, and converting the received light rays into electrical output signals; and a storing section for storing a combined central wavelength of each of the light receiving elements calculated in advance based a spectral intensity distribution of the illumination light.

Abstract: An optical characteristic measuring apparatus of the invention is configured in such a manner that a specular reflection light component in reflection light from an object to be measured is received, and shake of the apparatus is detected based on the amount of the received light. The optical characteristic measuring apparatus having the above arrangement enables to precisely measure an optical characteristic of the object to be measured, without the need of providing a mechanical switch or a like device, and without depending on the shape of the object to be measured.

Abstract: An optical characteristic measuring apparatus of the invention is configured in such a manner that a specular reflection light component in reflection light from an object to be measured is received, and shake of the apparatus is detected based on the amount of the received light. The optical characteristic measuring apparatus having the above arrangement enables to precisely measure an optical characteristic of the object to be measured, without the need of providing a mechanical switch or a like device, and without depending on the shape of the object to be measured.

Abstract: A liquid crystal display, comprising: a liquid crystal display portion for inputting a video signal to display an image thereon; a backlight provided on a rear side of the liquid crystal display portion, for illuminating the liquid crystal display portion from a rear surface thereof; a backlight driver portion for driving the backlight, also having a light control function for controlling a light intensity of the illuminating lights from that backlight; a feature detector portion for detecting an averaged brightness of the video signal, and also a histogram of brightness or a color, upon basis of said video signal inputted; and a light intensity control portion for controlling the light intensity of the illuminating lights from the backlight, through the light control function of the backlight driver portion, upon basis of the histogram of brightness or color, as well as, the averaged brightness of the video signal detected by the feature detector portion.

Abstract: A color luminance meter 1 is provided with a polychrometer 4 as a spectral optical system including a light receiving sensor array 43, a signal processing circuit 5 and an operation control unit 6. The operation control unit 6 carries out calculations to obtain characteristics of a measurement light based on a specified spectral responsitivity, using light reception signals and specified weighting coefficients. The spectral responsitivities of light receiving sensors constructing the light receiving sensor array 43 are selected such that B?5 nm and A/B lies within a range of 1.5 to 4.0 when A, B denote the half power band width of the spectral responsitivities and a center wavelength interval of the spectral responsitivities. Accordingly, there can be provided a light measuring apparatus capable of maximally suppressing errors to highly precisely measure color luminance values and the like even in a measurement of a light lying in a narrow band such as a monochromatic light.