Abstract: A terminal display device which a user wears on a user's head displays on a display unit an information object to be overlapped with a field of view of the user, detects a motion of the terminal display device, and stores a pattern of a motion of the terminal display device and an operation content of the information object that is displayed in association with each other. An information type management memory unit stores information related to a display mode of each of the information objects. A display control unit determines an operation content of the terminal display device based on the motion that is detected and an association between the motion pattern and the operation content, specifies the information object disposed at a predetermined position of the display unit, and performs an operation specified with the determined operation content on the specified information object.

Abstract: A light guide plate includes: first and second internal reflective surfaces that are approximately parallel and propagate incoming image light while totally reflecting the image light; a partially reflective surface array that has a plurality of partially reflective surfaces arranged in a direction of propagating image light, the partially reflective surfaces being inclined at a predetermined angle and partially reflecting the image light; and a uniforming element that uniforms intensity distribution of image light which is reflected by the partially reflective surface array to be projected from the light guide plate. As the uniforming element, the partially reflective surface array is divided into a plurality of segments along a direction of propagating image light, and the inter-surface spacing of the partially reflective surfaces or the reflectivity of the partially reflective surfaces is configured to vary from segment to segment.

Abstract: The reflection surface of a DMD is divided into a first area and a second area, causing the first area to display images while appropriately controlling the on and off states of the micromirrors within the second area on the basis of a prescribed control logic according to the on and off states of the micromirrors within the first area. Further, the DMD off-state light created in the first and second areas is caused to recurse to the DMD via a prescribed recycle optical system for the DMD off-state light, and only the second area in the reflection surface is intensively irradiated along a prescribed irradiation direction, thereby efficiently converting the DMD off-state light to the effective projection light.

Abstract: It is possible to generate a range image with higher accuracy. A range image generation apparatus includes: a light emitting unit that emits light toward an object at different light emission intensities; a light receiving unit that captures an image of the object by receiving light including reflected light from the object and calculates a light exposure amount for each pixel; and a range calculating unit that calculates a range to the object by replacing a light exposure amount at a first light emission intensity by a light exposure amount at a second light emission intensity in a predetermined case and generates a range image.

Abstract: A head mounted display has a display unit to generate a displayed image, an illumination unit to emit illumination light to the display unit, a projection unit to project image light from the display unit, and a light guide unit to transmit image light from the projection unit to pupils of a user. Here, the illumination unit has light source units, a microlens array that is illuminated by light emitted from the light source units and becomes a virtual secondary light source, a condensing optical member to focus light from the microlens array on the display unit, and a diffusion plate to diffuse light from the microlens array, and the diffusion plate is arranged closer to the condensing optical member than to the microlens array. As a result, a conjugate image is inhibited from being generated with the adoption of a microlens array.

Abstract: An image projection optical module including: an image generating element configured to generate an image; an image display unit configured to display the image; and a coupling member thermally connected to the image generating element, the coupling member including a front heat dissipation portion on a front portion of the coupling member when a direction of line of sight of a user wearing a casing of a head mounted display provided with the image projection optical module is defined as a forward direction, the front heat dissipation portion being to dissipate heat.

Abstract: A distance measurement apparatus 1 includes a light emitting unit 11 that irradiates a subject with a light-source light from a light source, a light receiving unit 12 that receives a reflected light from the subject, a distance calculation unit 13 that calculates a distance to the subject based on a time difference from the irradiation of the light-source light to the reception of the reflected light; and an image processing unit 20 that generates a distance image of the subject based on the calculated distance. Further, the apparatus includes a first rotation mechanism 14 that adjusts an irradiation angle of the light emitting unit and a second rotation mechanism 15 that adjusts a light receiving angle of the light receiving unit, in which the angles of the light emitting unit and the light receiving unit may be adjusted independently of each other.

Abstract: The video display device includes a laser light source unit, a video processing unit that outputs a video gradation signal, a current gain signal, and a current offset signal, a laser driver that outputs the drive current based on the video gradation signal, the power supply gain signal, and the current offset signal, and a dimming level processing unit that divides a dimming level for designating brightness of a video into a plurality of dimming modes and divides the dimming level into in-mode levels within the divided dimming modes, wherein the video processing unit includes a video gradation value output unit that outputs the video gradation signal obtained by scaling and offsetting a gradation value of the video based on the dimming mode and the in-mode level, a current gain output unit that outputs the current gain signal depending on the dimming mode.

Abstract: A distance measurement apparatus 1 includes: a TOF camera 10 having a light-emitting unit 11, a light-receiving unit 12, and a distance-calculating unit 13 to measure a distance to the subject on the basis of light transmission time; and an image processing unit 17 that creates a distance image of the subject from distance data measured by the TOF camera 10. The image processing unit 17 determines whether or not there is a detection target in the created distance image. If there is no detection target in the distance image, the light emission intensity control unit 18 decreases the emitted light intensity from the light source of the light-emitting unit 11, and the operation mode is switched to a power saving mode in which the pixel addition control unit 19 increases an addition ratio of a neighboring pixel signal of the light-receiving unit 12.

Abstract: According to the present invention, in an image display device that displays two images in parallel, a peak current for light source driving and continuation of a peak current are suppressed without reducing luminance of a display image. An image display device includes a light source unit, two panel units, and a timing control unit. A period of one frame of an image displayed by each panel unit has a standby period in which the panel unit is not illuminated by the light source unit for image generation and a lighting period in which the panel unit is illuminated by the light source unit. The timing control unit controls an operation timing such that the periods of one frame of the images displayed by the respective panel units overlap, and frame start times of the periods are shifted from each other by a predetermined delay time.

Abstract: Exemplary embodiments relate to providing an optical image measurement apparatus that is capable of acquiring information on birefringence of a sample while suppressing size and cost of the apparatus. In the present disclosure: second measurement light different from first measurement light is generated using a passive optical element that generates light of second polarization state different from first polarization state; a time when the first measurement light is irradiated onto a sample is adjusted at a first time, and a time when the second measurement light is irradiated onto the sample is adjusted at a second time different from the first time.

Abstract: The optical module for optical height measurement includes a laser light source, an irradiation optical system, a detection optical system, and a detector. The laser light source is configured to irradiate the layer-structured specimen with a light beam. The irradiation optical system includes an objective lens. The objective lens is located to be approximately perpendicular to the layer-structured specimen. The detection optical system is configured to guide a reflected light reflected by the layer-structured specimen and a light passing through the objective lens and an aperture-restrictor-for-return to the detector. The aperture-restrictor-for-return is located immediately after the objective lens. The aperture-restrictor-for-return is configured to restrict the reflected light and cause only a light in a high NA region to pass through. The detector is configured to convert an entered light into a light detection signal. The detector includes a multi-divided detector array.

Abstract: An object position detection apparatus 1 includes a distance image generation unit 10 which generates a two-dimensional distance image by measuring a distance to a subject including an object on the basis of a light transmission time, an object image generation unit 16 which generates an object image in which the object is extracted from the distance image of the subject, and an installation angle detection unit 20 which detects an installation angle of the distance image generation unit 10. The object image generation unit 16 includes a differentiator 17 which performs a process of removing a background other than the object from the distance image of the subject and a threshold value d for removing the background in the differentiator 17 is set in response to the installation angle of the distance image generation unit 10 detected by the installation angle detection unit 20.

Abstract: A three-dimensional distance measurement apparatus include: a plurality of light sources 11 that irradiate light onto the subject; a light emission control unit 12 that controls light emission from a plurality of light sources; a light-receiving unit 13 that detects reflection light from the subject; a distance-calculating unit 14 that calculates a distance to the subject on the basis of a transmission time of reflection light; and an image processing unit 15 that creates a distance image of the subject on the basis of calculated distance data. The plurality of irradiation areas 3 onto which light from the light sources are irradiated are arranged to partially overlap only with the neighboring ones. The light emission control unit 12 individually turns on or off the light sources 11 or individually adjusts the emitted light amounts.

Abstract: An image projection optical module including: an image generating element configured to generate an image; an image display unit configured to display the image; and a coupling member thermally connected to the image generating element, the coupling member including a front heat dissipation portion on a front portion of the coupling member when a direction of line of sight of a user wearing a casing of a head mounted display provided with the image projection optical module is defined as a forward direction, the front heat dissipation portion being to dissipate heat.

Abstract: A video projection device 001 includes a video generation section 041 that has a micro display element 003 which generates video and an illuminating optical system 002 which illuminates a micro display element; projection section 043 that project the video which is generated by the video generation section onto the eyes of a user through an eyepiece section; and a mechanical support section 042 that connects the video generation section to the projection section using a housing section. The mechanical support section includes at least one transparent area 011 that is surrounded by the housing section, and penetrates in a direction parallel to a direction in which the video from the projection section is projected. The illuminating optical system includes a light source that emits light in a plurality of wavelength bands, and a controller 440 that controls the output of the light source.

Abstract: A head mounted display includes a first optical housing mounting a light source and an optical component, a second optical housing mounting an image generating element and an optical component, a securing member connecting and securing the first optical housing and the second optical housing, and an exterior housing holding the first optical housing, the second optical housing, and the securing member. The securing member is fitted with the first optical housing with the second optical housing enclosed to connect and secure the first optical housing and the second optical housing.

Abstract: Provided is a scanning type image measuring apparatus capable of reducing an imaging time while suppressing an increase in power consumption. The scanning type image measuring apparatus includes an objective lens scanning mechanism for operating an objective lens in a first direction and a second direction perpendicular to the first direction, wherein, with respect to a resonance frequency related to a spring constant of a support member supporting a movable unit including the objective lens and a mass of the movable unit, the resonance frequency in the second direction is set to be higher than the resonance frequency in the first direction, and a scanning frequency of the objective lens in the second direction is set to be higher than the resonance frequency in the second direction.

Abstract: The laser projection display device (1) includes a laser beam source (5), a laser driver (4) driving the laser beam source, and an image processing unit (2) supplying a display image signal to the laser driver. The image processing unit applies a preliminary emission signal (53) to perform preliminary emission to an image signal (50) in a predetermined period (t0 to t1) immediately before a black pixel signal is switched to a signal except for the black pixel signal when the image signal has a black pixel duration. In particular, the preliminary emission process is performed when the laser beam source is operated in a dark image region while being reduced in maximum light intensity, and, as the preliminary emission signal, a signal (L0) corresponding to a light intensity which is 1/10 or less a maximum light intensity (La) in the dark image region.

Abstract: An image display device 1 includes a laser light source unit 10, a screen 12 formed of at least two diffusion members, a vibration mechanism 13 vibrating at least one diffusion member, and a scanning element 11 scanning laser light in a first direction (a y direction) on the screen and a second direction (an x direction) orthogonal to the first direction. A scanning speed of the scanning element 11 in the second direction is faster than a scanning speed in the first direction, and a diameter D of the laser light in the first direction on the screen is greater than an interval Yp in the first direction on the scanning trajectory in the second direction on the screen. Accordingly, it is possible to provide an image display device displaying an image having a low speckle with high luminance, without vibrating the diffusion member at a high speed.