A holographic display system provides a maximum intensity value of an intermediate image to decrease a graphics speckle noise. The system includes an SLM having a display with a hologram generating unit and a plurality of pixels for modulating a beam of coherent light. The system further includes a beam splitter for splitting the beam into an object beam and an intermediate image beam that is associated with an intermediate image having the noise. The system further includes a camera for capturing the intermediate image, in response to the camera receiving the intermediate image beam. The system further includes a computer having a processor and a CRM. The processor is programmed to generate an actuation signal associated with a corrective holographic phase shift to decrease the noise. The SLM modifies in real-time a holographic phase of the beam per pixel, in response to the SLM receiving the actuation signal.

A virtual image display apparatus includes a housing having a first housing part and a second housing part. The first housing part is located on a side facing in a first direction. The second housing part is located on a side facing in a second direction being opposite to the first direction. A composite wall is located at the housing on a side facing in a third direction being perpendicular to the first direction. The composite wall includes a first front wall portion and a second front wall portion. The first front wall portion is extended from the first housing part. The second front wall portion is extended from the second housing part. The first and second front wall portions have an interference avoidance structure that avoids interference when the first and second front wall portions approach each other by receiving a load.

A virtual image display apparatus includes a housing having a first housing part and a second housing part. The first housing part is located on a side facing in a first direction. The second housing part is located on a side facing in a second direction being opposite to the first direction. A composite wall is located at the housing on a side facing in a third direction being perpendicular to the first direction. The composite wall includes a first front wall portion and a second front wall portion. The first front wall portion is extended from the first housing part. The second front wall portion is extended from the second housing part. The first and second front wall portions have an interference avoidance structure that avoids interference when the first and second front wall portions approach each other by receiving a load.

Provided are a projection assembly, a display system and a vehicle. The projection assembly is applied to the vehicle, and the projection assembly includes: a housing, a bottom cover, a display module, a heat dissipation assembly and an imaging lens. The housing is connected with the bottom cover, and the housing and the bottom cover form an accommodating space, the heat dissipation assembly, the display module and the imaging lens are all disposed in the accommodating space, and the display module is disposed on the heat dissipation assembly; and the imaging lens includes a lens barrel and a lens assembly, the lens barrel is disposed on the heat dissipation assembly, the lens assembly is disposed in the lens barrel, and the lens barrel surrounds the display module, the display module faces the lens assembly, the housing is provided with an opening, and the lens assembly faces the opening.

Provided are a projection assembly, a display system and a vehicle. The projection assembly is applied to the vehicle, and the projection assembly includes: a housing, a bottom cover, a display module, a heat dissipation assembly and an imaging lens. The housing is connected with the bottom cover, and the housing and the bottom cover form an accommodating space, the heat dissipation assembly, the display module and the imaging lens are all disposed in the accommodating space, and the display module is disposed on the heat dissipation assembly; and the imaging lens includes a lens barrel and a lens assembly, the lens barrel is disposed on the heat dissipation assembly, the lens assembly is disposed in the lens barrel, and the lens barrel surrounds the display module, the display module faces the lens assembly, the housing is provided with an opening, and the lens assembly faces the opening.

To provide a head-up display that can provide light-shielding portions at a plurality of locations while controlling costs. Provided is a head-up display comprising: a display device that displays images; a plane mirror that reflects display light from the display device; a concave mirror that reflects display light via the plane mirror; a cover glass that allows display light to pass through the concave mirror; and a blind cover formed as an integral member, a virtual image being displayed by using the display light projected on an object from the display device via a prescribed optical path through the plane mirror, the concave mirror, and the cover glass, wherein the blind cover is provided with a first light-shielding portion that blocks the display light that deviates from the prescribed light path from the display device to the plane mirror, a second light-shielding portion that suppresses external light passing through the cover glass from entering the inside, and an attachment portion that attaches the plane mirror to the blind cover.

A head-up display system includes an eye-box having a first and second dimension, an image projector including a picture generating unit and an optical system, and a movement assembly. The picture generating unit includes a spatial light modulator arranged to spatially modulate light in accordance with a hologram. The optical system relays the spatially modulated light to an optical combiner. The movement assembly moves at least a portion of the image projector rectilinearly between a plurality of positions such that at least one component of the picture generating unit is moved together with the optical system. Spatially modulated light relayed to the optical combiner forms a virtual image viewable from a sub-eye-box having a position in the first dimension being dependent on the position of the at least a portion of the image projector. The eye-box is the sum of the sub-eye-boxes associated with each of the plurality of positions.

A head-up display system for a vehicle including a picture generating unit for projecting information. A mirror is rotatably connected to a housing for reflecting the information from the picture generating unit toward a combiner panel. A first mirror leg extends from the mirror along a first axis and a second mirror leg extends from the mirror opposite the first mirror leg along a second axis. A first ball joint assembly pivotably connects the first mirror leg to the housing and a second ball joint assembly pivotably connects the second mirror leg to the housing, each for preventing misalignment of the mirror. At least one of the first and second mirror legs are translatable along the first or second axis relative to the housing. A first bearing is rotatably connects the first leg to the housing and a second bearing rotatably connects the second leg to the housing.

A display device for a work machine includes a position information acquisition unit configured to acquire position information of a work machine, a peripheral information acquisition unit configured to acquire peripheral information indicating an existing structure, terrain, or a boundary of a zone around a position indicated by the position information of the work machine, an augmented image generation unit configured to generate an augmented image in which the existing structure, the terrain, or the boundary of a zone is viewed from a predetermined viewpoint of the work machine, and a display processing unit configured to display the augmented image of the existing structure, the terrain, or the boundary of a zone while superimposing the augmented image on a field of view from the predetermined viewpoint of the work machine or on an image of the field of view.

A display device for a work machine includes a position information acquisition unit configured to acquire position information of a work machine, a peripheral information acquisition unit configured to acquire peripheral information indicating an existing structure, terrain, or a boundary of a zone around a position indicated by the position information of the work machine, an augmented image generation unit configured to generate an augmented image in which the existing structure, the terrain, or the boundary of a zone is viewed from a predetermined viewpoint of the work machine, and a display processing unit configured to display the augmented image of the existing structure, the terrain, or the boundary of a zone while superimposing the augmented image on a field of view from the predetermined viewpoint of the work machine or on an image of the field of view.