Abstract: Provided are a projection-type display device, a safe-driving support method, and a non-transitory computer readable recording medium storing a safe-driving support program capable of securing safety while providing sufficient information to a driver even in a situation where a field of vision in a traveling direction of a motor vehicle is poor. An HUD includes a light modulation unit that modulates light emitted from a light source unit; a projection unit that projects the light modulated by the light modulation unit onto a combiner; a first image information generation unit that generates first image information and outputs the first image information to the light modulation unit; a second image information generation unit that generates second image information and outputs the second image information to a display device; and a control unit that controls operations of the first image information generation unit and the second image information generation unit.

Abstract: Disclosed are a distance image acquisition apparatus and a distance image acquisition method capable of acquiring a distance image with satisfactory accuracy based on a first pattern projected from a host apparatus even in a case where patterns of structured light having the same shape are projected simultaneously from the host apparatus and another apparatus.

Abstract: A projection-type display device includes: R, G, and B light sources that emit light beams with different colors; a projection unit that projects light beams based on image information among light beams emitted from the light sources onto a projection screen; a heat sink that radiates heat generated from the R light source, which has a maximum change in light emission intensity relative to a change in temperature, among the light sources; and a heat sink that radiates heat generated from the G and B light sources and that has a surface area smaller than that of the heat sink. In a use state, the R light source is disposed on a side apart from the other light sources in a direction opposite to a direction of gravitational force.

Abstract: Provided are a projection type display device, a projection control method, and a non-transitory recording medium readable by a computer for recording a projection control program capable of smoothly changing shapes of projection ranges of image light. A projection type display device 1 includes: projection units 11 and 12 that project image light to a projection surface 4; a drive mechanism 13 for controlling a position, on the projection surface, of a projection range of the image light projected by the projection unit 12; and a controller 60 that controls the drive mechanism 13 and changes a length, in one direction, of a range obtained by combining projection ranges of the image light projected by the respective projection units 11 and 12 and a length, in a direction orthogonal to the one direction, of the range, respectively.

Abstract: An HUD 100 includes a housing 7 that accommodates a light source unit 40, a light modulation element 44 that spatially modulates light emitted from the light source unit 40 on the basis of image information, and a diffusion member 5 and a concave mirror 6 that project the spatially modulated image light onto a windshield 2 through an opening portion 30 provided in a dashboard 3 of an automobile 1, and is supported to be rotatable inside the dashboard 3; an actuator 10 that drives the housing 7 to be rotatably; and a tubular flexible member 9 that connects a peripheral edge of an opening surface 30A of the opening portion 30 and a peripheral edge of a light emitting surface 8A of the image light in the housing 7.

Abstract: The projection display device includes a captured image data acquisition unit 61 that acquires captured image data obtained through image capturing performed by an imaging unit that captures an image of a region around a vehicle; a contour image data generation unit 62 that generates, in accordance with the captured image data, contour image data representing contours in a captured image that is based on the captured image data; and a projection display unit that performs, in accordance with image data including the contour image data, spatial modulation on light emitted by a light source (41r, 41g, 41b), and projects image light obtained through the spatial modulation onto a front windshield 1 in the vehicle.

Abstract: A distance image acquisition apparatus includes a projection unit which performs a plurality of times of light emission with a plurality of light emission intensities to project a first pattern of structured light onto a subject within a distance measurement region, an imaging unit which is provided in parallel with and apart from the projection unit by a baseline length, images the subject in synchronization with each of the plurality of times of light emission, and generates a plurality of captured images corresponding to the plurality of light emission intensities, a normalization unit which normalizes a plurality of captured images with coefficients corresponding to the plurality of light emission intensities to acquire a plurality of normalized images, a discrimination unit which compares a plurality of normalized images and discriminates the first pattern projected from the projection unit, and a distance image acquisition unit.

Abstract: A projection type display device mounted in a construction machine having a windshield performs a first control for projecting image light onto a first projection range and stopping projection of image light onto a second projection range and a third projection range in a case where a bucket is detected on the first projection range on the windshield. Further, the projection type display device performs a second control for projecting image light onto each of the first projection range and the second projection range and stopping projection of image light onto the third projection range in a case where the bucket is detected at an overlapping position of the first projection range and the second projection range of the windshield.

Abstract: Provided are a projection type display device and a projection control method capable of accurately performing information presentation to an operator of a vehicle even in an image light shielded state where image light to be projected onto a projection surface is shielded by an object. An HUD 10 that is mounted in a construction machine 100 having a windshield 5 notifies, in a case where it is detected that image light to be projected onto the windshield 5 is in an image light shielded state where at least a part of the image light is shielded by an object, such as part of the body of an operator of a vehicle, the presence of the state.

Abstract: A projection display system and a control method of controlling a projection display device capable of preventing degradation of visibility or occurrence of a sense of discomfort at a boundary between respective projection areas due to dimming are provided. In a system including a plurality of projection display devices (100A, 100B, 100C) that project image light onto a plurality of areas in one projection surface, each of the plurality of projection display devices includes a brightness detection unit (47b), and a first control unit (52) that controls a projection condition for the image light that is projected on the basis of detected brightness information, and a second control unit (53) that performs control to cause a projection condition for the image light of the second projection display device (100B) to match a projection condition determined by the first control unit (52) of the first projection display device (100A).

Abstract: Provided are a projection type display device and a projection control method capable of visually recognizing a virtual image in a wide range in front of a windshield of a working machine, without increasing the manufacturing cost of the working machine. A projection type display device that is mounted in a construction machine (100) having a windshield (7) detects a line of sight of an operator, controls a projection light axis of image light, emitted from a unit (2), into a direction that intersects a reflecting member (3) (or a reflecting member (5)) on the basis of the detected direction of the line of sight, controls an angle of a reflecting surface of the reflecting member (3) (or the reflecting member (5)) through a reflecting member driving mechanism (4) (or a reflecting member driving mechanism (6)), and reflects the image light, from the unit (2), onto the windshield (7).

Abstract: Provided are a projection type display device and a projection control method for a working machine, capable of effectively assisting construction work. An HUD 10 that is mounted in a construction machine 100 having a windshield 5 projects image light onto a first projection range 5A and a second projection range 5B in the windshield 5 so that a virtual image is visually recognizable, and projects image light onto a third projection range 5C so that a real image can be visually recognized, to thereby present working assistance information over a wide range.

Abstract: Provided is a projection type display device capable of performing display of information according to a driver's desire. An HUD includes light sources; a light modulation element that spatially modulates light emitted from the light sources on the basis of projection image data; a projection unit that projects image light that is spatially modulated by the light modulation element onto a projection surface that is a part of a windshield 1 mounted in an automobile; a designation information acquisition unit that acquires designation information for designating at least one of a maximum number of pieces of content included in the projection image data, display sizes of the pieces of content, or arrangement layouts of the pieces of content on the basis of information input through an operation unit; and an image information generation unit that generates the projection image data on the basis of the designation information acquired.

Abstract: An HUD includes a projection unit that projects image light that is spatially modulated on the basis of image data onto a windshield, a sight line detection unit that detects a line of sight of a driver of a vehicle, and a system controller that acquires measurement data on shape of a region including a point that intersects the line of sight of the driver in a projectable range of the image light in the windshield, generates correction data for correcting distortion of an image based on the image light projected onto the region on the basis of the acquired measurement data and the direction of the line of sight of the driver, and corrects the image data using the generated correction data.

Abstract: Provided are a projection type display device and a projection control method capable of presenting suitable information to an operator both during traveling on a public road and during operation at a working site to perform assistance for the operator. A projection type display device that is mounted in a construction machine 100 having a windshield 5 performs a control so that image light is projected onto each of a first projection range 5A, a second projection range 5B, and a third projection range 5C of the windshield 5 in a case where it is determined that the location of the construction machine 100 is a working site, and performs a control so that image light is projected onto only the third projection range 5C of the windshield 5 in a case where it is determined that the location of the construction machine 100 is a public road.

Abstract: The projection type display device includes a projection display unit that includes light sources, a light modulation element, and a projection unit that projects light onto a projection surface mounted in a vehicle as projection light; a sight line detection unit that detects a line of sight of a driver of the vehicle; and a system controller that performs a control so that a projection condition in a state where the line of sight detected by the sight line detection unit is out of the projection surface becomes a first condition and changes the projection condition when it is determined that the line of sight moves from the outside of the projection surface to the inside of the projection surface into a second condition that visibility of an image based on the projection light is higher than that in the first condition.

Abstract: The projection type display device includes a projection display unit that includes light sources, a light modulation element that spatially modulates light emitted from the light sources, and a projection unit that projects light spatially modulated by the light modulation element onto a projection surface; a sight line detection unit that detects a line of sight; and a system controller that stops projection of the projection light onto the projection surface by the projection display unit in a state where the line of sight detected by the sight line detection unit is out of the projection surface and restarts the projection of the projection light onto the projection surface by the projection display unit after a first time elapses after a timing of moment when the line of sight is determined to move from an outside of the projection surface to an inside of the projection surface.

Abstract: A distance image acquisition apparatus includes a projection unit which projects a first pattern of structured light in a plurality of wavelength bandwidths, an imaging unit which is provided in parallel with and apart from the projection unit by a baseline length, performs imaging with sensitivities to a plurality of wavelength bandwidths, and generates a plurality of captured images corresponding to a plurality of wavelength bandwidths, a determination unit which determines whether or not a second pattern of structured light projected from another distance image acquisition apparatus is included in the captured images, and a pattern extraction unit which extracts the first pattern from a captured image determined as the second pattern being not included by the determination unit, and a distance image acquisition unit which acquires a distance image indicating a distance of a subject within a distance measurement region based on the first pattern.

Abstract: The distance image acquisition apparatus (10) includes a projection unit (12) which projects a first pattern of structured light distributed in a two-dimensional manner with respect to a subject within a distance measurement region, a light modulation unit (22) which spatially modulates the first pattern projected from the projection unit (12), an imaging unit (14) which is provided in parallel with and apart from the projection unit (12) by a baseline length, and captures an image including the first pattern reflected from the subject within the distance measurement region, a pattern extraction unit (20A) which extracts the first pattern spatially modulated by the light modulation unit (22) from the image captured by the imaging unit (14), and a distance image acquisition unit (20B) which acquires a distance image indicating a distance of the subject within the distance measurement region based on the first pattern.

Abstract: Disclosed are a distance image acquisition apparatus and a distance image acquisition method capable of acquiring a distance image with satisfactory accuracy based on a first pattern projected from a host apparatus even in a case where patterns of structured light having the same shape are projected simultaneously from the host apparatus and another apparatus.