Abstract: An illumination optical system is provided with: a lens that condenses first luminous flux emitted from an optical fiber at an angle of divergence of ?1; a lens that condenses second luminous flux that has a color that is different from the color of the first luminous flux and that is emitted from an optical fiber at an angle of divergence of ?2 (??1); and a dichroic mirror that is provided at the position at which the optical axis of the lens intersects at a right angle with the optical axis of the lens, that transmits the first luminous flux that is irradiated from the lens, and that reflects the second luminous flux that was irradiated from the lens in the direction in which the first luminous flux was transmitted.

Abstract: An image correction device includes: a first target unevenness characteristic calculation unit that calculates a first target unevenness characteristic based on a first uncorrected unevenness characteristic and a correction amount, the first uncorrected unevenness characteristic being an uncorrected unevenness characteristic at a first gradation, the uncorrected unevenness characteristic being a characteristic of brightness unevenness of a display panel when uncorrected, the correction amount being calculated based on a backlight drive value and a black level; a second target unevenness characteristic calculation unit that calculates a second target unevenness characteristic based on a second uncorrected unevenness characteristic and the backlight drive value, the second uncorrected unevenness characteristic being the uncorrected unevenness characteristic at a second gradation; and a correction data generation unit that generates correction data for each gradation for correcting an image signal, based on the

Abstract: A backlight device includes: a light emitting unit that includes a plurality of light sources having different light emission colors from each other; a detection unit that detects light emission states of the plurality of light sources; a temperature sensor that measures a temperature in a proximity of the plurality of light sources; a brightness conversion unit that converts values indicating the detected light emission states to obtain a detection value for each color of the light emission colors; and a calculation unit that corrects the obtained detection value for each of the light emission colors by using information indicating a relationship between the measured temperature and a correction value, and determines drive values for the light sources based on the corrected detection value.

Abstract: Provided is an illumination optical system capable of emitting monochromatic light having high luminance while taking safety into consideration. The illumination optical system includes a first light source configured to emit monochromatic coherent light having a first peak wavelength that belongs to the wavelength region of visible light, a second light source configured to emit monochromatic incoherent light having a second peak wavelength that belongs to a wavelength region exhibiting the same color as that of the coherent light, and a dichroic mirror configured to mainly reflect one of the coherent light and the incoherent light while mainly transmitting the other, and synthesize the optical paths of the coherent light and the incoherent light.

Abstract: A light quantity measurement unit measures a quantity of light of a light source that has a first light-emitting element that emits light of a first wavelength band and a second light-emitting element that emits light of a second wavelength band. The light quantity measurement unit includes first and second filters having the first and second wavelength bands as the detection wavelength bands.

Abstract: A projector including at least one light source, a polarization separation element that separates light from the light source into two linearly polarized light beams whose polarization axes are orthogonal to each other to emit the two linearly polarized light beams in the same direction, a TIR prism that transmits through the two linearly polarized light beams, a reflective light modulation element that receives the two linearly polarized light beams that have been emitted from the TIR prism to modulate and reflect the two linearly polarized light beams toward the TIR prism, a projection lens that enlarges and projects the two linearly polarized light beams that have been modulated by the reflective light modulation element and that have been transmitted through the TIR prism, and a rotating prism being rotatably arranged in an optical path.

Abstract: A driving device includes a drive normalization part configured to calculate a reference light quantity measurement which is estimated when a backlight is driven using the predetermined reference BL-drive value based on a current BL-drive value and a light quantity measurement of the backlight; a low-pass filter configured to calculate a moving average among a plurality of reference light quantity measurements being temporarily held, thus outputting the smoothed reference light quantity measurement precluding noise; and a BL-drive value calculation part configured to calculate a target BL-drive value which allows the smoothed reference light quantity measurement to match the target light quantity corresponding to a user's setting of luminance.

Abstract: A sensor device includes: a light sensor that acquires a first light quantity measurement value that is proportional to a light quantity of a backlight and a first measurement time; a light quantity target value calculating unit that calculates a light quantity target value based on a user setting for the backlight; and a measurement time calculating unit that calculates a second measurement time for when the light sensor acquires a second light quantity measurement value a next time, based on the acquired first light quantity measurement value and the light quantity target value.

Abstract: An image display device having a display panel, the device being utilized to form an image display system in which a plurality of the image display devices are arrayed in one or both of vertical and horizontal directions to display one image as a whole while an image allocated to each device is displayed via the corresponding display panel, the image display device includes a reading processing unit that reads out image information and delays start of output of this image information by a predetermined period of time determined based on the number of the image display devices which forms the image display system and a row to which the present device belongs in the vertical arrangement.

Abstract: A projector in an illumination optical system includes a laser light source, a synchronization signal processor that converts synchronization signals that are synchronized with video signals input from outside the projector into video signals to be used inside the projector, an LD driver that controls a lighting state of the laser light source according to the synchronization signals output from the synchronization signal processor, an LED (Light Emitting Diode) light source, an LED driver that controls a lighting state of the LED light source according to the synchronization signals output from the synchronization signal processor, a rotational state detector that detects a rotational state of a phosphor wheel, and a phosphor wheel driver that, based on a detected result of the rotational state detector, controls the rotational state of the phosphor wheel.

Abstract: A projection image display device includes: a laser light source; phosphor excited by excitation laser light emitted from laser light source to emit light; an optical functional reflector (cross dichroic prism) into which at least one laser light from laser light source and fluorescent light from phosphor enters and which reflects light of a specific wavelength band while transmitting light of the other wavelength band; a diffusion plate that diffuses the laser light; a diffusion plate driver for moving the diffusion plate; and a spatial light modulation element (digital micromirror device) that modulates the light output from cross dichroic prism. Diffusion plate is disposed on the optical path of excitation laser light applied from laser light source to phosphor.

Abstract: A video display device includes: a video display unit that displays video in accordance with a video signal; a switching detection signal input and output terminal that receives and outputs from and to another video display device a switching detection signal taking a first or second state; a display control unit that stops video display by the video display unit when a predetermined operation is instructed; a switching process signal output unit that outputs a predetermined switching process signal to change the switching detection signal to the first state when the predetermined operation is instructed, the switching process signal output unit stopping the output of the switching process signal when the predetermined operation is complete; and a switching detection signal input unit that releases the stoppage of the video display by the video display unit when the switching detection signal is in the second state.

Abstract: A display device includes a processing unit that determines whether a plurality of videos can be displayed side by side without overlapping each other in a display unit without changing resolutions of the plurality of videos. When the processing unit determines that the plurality of videos can be displayed, it causes the display unit to display the plurality of videos side by side without overlapping each other without changing the resolutions of the plurality of videos. When the processing unit determines that the plurality of videos cannot be displayed, it changes a resolution of at least one of the plurality of videos based on a resolution of the display unit, the resolutions of the plurality of videos, and a priority order, and causes the display unit to display the plurality of videos including the video for which the resolution has been changed side by side without overlapping each other.

Abstract: A light source device is equipped with a light source main unit, an optical element, a phosphor unit, and a condensing element. The optical axis of the light source main unit is shifted from the optical axis of the condensing element. The reflection direction of light of a first wavelength in a reflecting region intersects direction of the light of the first wavelength incident to the reflecting region. In response to the irradiation of the light of a first wavelength, fluorescent regions emit light of a second wavelength in a direction opposite to the direction of light of the first wavelength incident to the reflecting region and in the direction of reflection of light of the first wavelength in the reflecting region. In addition, fluorescent regions are capable of reflecting light of the second wavelength that is incident to the fluorescent regions.

Abstract: Phosphor color foil 1 comprises glass substrate 2, rotary motor 3 for rotating glass substrate 2, and phosphor (first phosphor) 5 annularly applied on the surface of glass substrate 2. The center of the applied region of phosphor 5 is different from the rotational center of glass substrate 2. The center of one or both of outer boundary line 5a and inner boundary line 5b of the applied region of phosphor 5 is different from the rotational center of glass substrate 2. Center axis 6 of glass substrate 2 is separated from the rotational center. Another phosphor (second phosphor) 9 is annularly applied adjacently to and inside or outside the applied region of phosphor 5.

Abstract: A light source device includes: a laser light source; a circular substrate which has fluorescent body that emits light by using light from the laser light source as excitation light; a wheel motor which rotates circular substrate; a dichroic prism which transmits the light from fluorescent body while reflecting the light from the laser light source; a diffusion plate which diffuses the light from the laser light source; and a plate spring which interconnects diffusion plate and wheel motor.

Abstract: A display device (10) includes a display (12) used to display an image, and a handle (14) attached to a recess (13) formed in a rear face (12a) of the display (12). The handle having a Z-shape in a side view connects between a first holder (17) and a second holder (18) via a connecting part (19). The second holder (18) is projected outside the display device so as to achieve an easy-to-hold ability when the first mounting face (17a) of the first holder (17) is fixed to the recess (13) of the display device (10). The first holder (17) is kept inside the thickness of the display device (10) when the second mounting face (18a) of the second holder (18) is fixed to the recess (13).

Abstract: An information display apparatus includes main image tone value modification means for modifying a tone value to compress a tone of a main image, first projection means for projecting the main image having the compressed tone by the main image tone value modification part with a first polarization component, sub-image tone value modification means for compressing tones of the sub-image, then modifying tone values of the sub-image by adding to the tone values after the compression an offset value, the offset value being not less than the maximum tone value of the main image having the compressed tone, correction image generation means for generating the correction image formed by subtracting the tone values of the main image having the compressed tone from the tone values modified by the sub-image tone value modification means, and second projection means for projecting the correction image with a second polarization component different from the first polarization component overlaying to the main image project

Abstract: A signal input switching circuit (19) that reduces the occurrence of malfunctions arising due to crosstalk between switch circuits has a plurality of input terminals to which signals are applied as input from signal sources and further includes: a plurality of switch circuits (15 and 16) that supply signals received as input by way of any of the input terminals that was selected from among the plurality of input terminals; input control units (18) that are provided corresponding to each of the plurality of input terminals belonging to each of the plurality of switch circuits (15 and 16) and that control input of signals from signal sources by way of corresponding input terminals; an input acceptance unit (17) that accepts operation input; and a CPU (12) that, in accordance with input to the input acceptance unit (17), causes each switch circuit to select any of the plurality of input terminals belonging to that switch circuit and supply the signal that was received by way of the selected input terminal, and f

Abstract: A light source apparatus according to the present invention includes a circuit board; a light source mounted on the circuit board; a first temperature measurement element that measures an ambient temperature of the circuit board and outputs a first signal that represents the measured result; a second temperature measurement element that measures a temperature of the circuit board and outputs a second signal that represents the measured result; and a light source drive control section that controls driving of the light source. The light source drive control section does not drive the light source if the temperature represented by the second signal is lower than the temperature represented by the first signal.