A display device is provided and including a backlight device including a plurality of light sources; a display panel disposed to oppose the backlight device and incline with respect to a direction perpendicular to an optical axis of the backlight device; a first diffusion plate between the display panel and the backlight device; and a second diffusion plate arranged at a predetermined angle with respect to the first diffusion plate.

A near-eye optical system receiving an image beam including a first optical waveguide is provided. The first optical waveguide expands the image beam in a first direction and includes first and second surfaces, first and second beam-splitting surfaces, and a plurality of first and second reflective inclined surfaces. The first and second beam-splitting surfaces are located in the first optical waveguide and disposed in a tilted manner relative to the first and second surfaces. The first and second beam-splitting surfaces have opposite tilt directions. The first and second beam-splitting surfaces receive an image beam incident from the first surface so that a first portion of the image beam passes through and a second portion of the image beam is reflected. The near-eye optical system further reduces a thickness of the optical waveguide and alleviates the issue that the image beam is not completely projected to the optical waveguide.

Glass having an inner surface and an outer surface, includes a first area used by a head-up display, and a second area adjacent to the first area, and not used by the head-up display. Representing an area closest to a boundary between the first area and the second area in the first area, by an edge on the boundary side in the first area, and representing an area closest to the boundary in the second area, by an edge on the boundary side in the second area, a requirement is that a wedge angle formed by the inner surface and the outer surface satisfies a predetermined formula.

A display device includes a display panel including a plurality of light emitters spaced apart by a first representative distance in a first emission region and a plurality of light emitters spaced apart by a second representative distance different from the first representative distance in a second emission region that surrounds the first emission region. The display device also includes a filter coupled with the display panel for transmitting light projected by the display panel through the filter. The filter has a first filter region configured to cause a first distribution of light emitted from a first light emitter in the first emission region and a second distribution of light emitted from a second light emitter in the first emission region so that the first distribution at least partially overlaps with the second distribution.

A light engine arranged to form an image visible from a viewing window. The light engine comprises: a display device arranged to display a hologram of the image and spatially modulate light in accordance with the hologram; a hologram replicator arranged to receive the spatially modulated light and provide a plurality of different light propagation paths for the spatially modulated light from the display device to the viewing window; and a control device disposed in an optical path between the first replicator and the second replicator. The control device is angled such that light from the first replicator is incident at an acute angle on the control device, and each cell of the array is switchable between a first state and a second state.

An illuminating module includes a light source assembly which includes a first lens unit. The light source assembly is configured to produce an illuminating beam, wherein the optical apparatus includes an optical modulation module and a light guiding module, the optical modulation module is parallel corresponding to the first lens unit, the illuminating beam passes through the optical modulation module to be an image beam having an image, and the image beam travels in the light guiding module, and leaves the light guiding module. The illuminating beam obliquely enters the optical modulation module.

Thermoplastic film suitable as an intermediate layer for a laminated glass pane, wherein the thermoplastic film includes a defined region, which is provided for a camera window or an HUD (head-up display) region that has a non-zero wedge angle, and a region surrounding the defined region on all sides, in which the thermoplastic film has a substantially constant thickness, wherein the maximum thickness in the defined region of the thermoplastic film is less than the thickness in the surrounding region.

According to one embodiment, a display device includes a backlight device including a plurality of light sources, a display panel disposed to oppose the backlight device and incline with respect to a direction perpendicular to an optical axis of the backlight device and a diffusion plate provided between the display panel and the backlight device.

Disclosed is an anti-reflection diffraction display system, the system comprising: a substrate; a diffraction projection screen and an optical engine; the optical engine projects to the diffraction projection screen light carrying information of a target image, thereby displaying the target image by means of the diffraction of the diffraction projection screen, wherein the light emitted by the optical engine is not irradiated in a reflection window on the substrate, and the reflection window is a region on the substrate; and when the light emitted by the optical engine is irradiated to the region and reflected, the reflected light enters a design window of the diffraction display system. In addition, further disclosed are a directional projection-based diffraction display system that has a plurality of screens and a directional projection-based diffraction display system that has a whole screen.

A display apparatus includes: a display surface configured to display an image; and a concave mirror configured to reflect light beams from the display surface toward a transparent member, in which a virtual image of the image is presented by the transparent member. An optical path after a first light beam is reflected in the transparent member coincides with an optical path after a second light beam is reflected in the transparent member by the reflection in the concave mirror, the first light beam reaching the transparent member from one point on the display surface and reflecting on a front surface of the transparent member, and the second light beam reaching the transparent member from the one point and reflecting on a rear surface of the transparent member.