Illuminations systems that separate different colors into laterally displaced beams may be used to direct different color image content into an eyepiece for displaying images in the eye. Such an eyepiece may be used, for example, for an augmented reality head mounted display. Illumination systems may be provided that utilize one or more waveguides to direct light from a light source towards a spatial light modulator. Light from the spatial light modulator may be directed towards an eyepiece. Some aspects of the invention provide for light of different colors to be outcoupled at different angles from the one or more waveguides and directed along different beam paths.

A head up display (HUD) system includes: a laser; a liquid crystal on silicon (LCoS) panel configured to modulate light output by the laser; a modulator control module configured to, during each predetermined period: apply power to the LCoS panel for a first predetermined ON period; and disconnect the LCoS panel from power for a remainder of the predetermined period; and a laser control module configured to, during each predetermined period: when a temperature of the LCoS panel is less than a predetermined temperature: apply power to the laser for a second predetermined ON period while power is applied to the LCoS panel and after the modulator control module begins applying power to the LCoS panel, where the second predetermined ON period is less than the first predetermined ON period; and disconnect the laser from power for the remainder of the predetermined period.

A prism apparatus and a projection device are provided. The prism apparatus includes a prism body, a first combining assembly, and a second combining assembly. The prism body includes prisms connected in sequence in a light guiding direction, and a gap is formed at a position where at least two adjacent ones of the prisms are connected to each other. The first combining assembly is arranged parallel to the light guiding direction, located at seams of the prisms, and connected to the prisms. The second combining assembly is arranged parallel to the light guiding direction, and covers and is connected to the first combining assembly.

The present disclosure provides a display device and a control method thereof. The control method of the display device comprises: obtaining, based on the first light output ratio and the second light output ratio, a first luminous flux set composed of values of luminous fluxes output by a combination path at a current bit depth, and a second luminous flux set composed of values of luminous fluxes output by the combination path at a target bit depth respectively; obtaining, based on the first luminous flux set and the second luminous flux set, a value of a luminous flux to be expanded to achieve the target bit depth at the current bit depth; and adjusting a mapping relationship between the value of each luminous flux to be expanded and a value of a maximum luminous flux in the first luminous flux set corresponding to the current bit depth based on a display bit depth of the display device.

Illuminations systems that separate different colors into laterally displaced beams may be used to direct different color image content into an eyepiece for displaying images in the eye. Such an eyepiece may be used, for example, for an augmented reality head mounted display. Illumination systems may be provided that utilize one or more waveguides to direct light from a light source towards a spatial light modulator. Light from the spatial light modulator may be directed towards an eyepiece. Some aspects of the invention provide for light of different colors to be outcoupled at different angles from the one or more waveguides and directed along different beam paths.

An illumination system and a projection device are provided. The illumination system includes a first laser light source providing a first laser light, a wavelength conversion module, a first light splitting element and a microlens array. When the first laser light is incident to at least one non-conversion region of the wavelength conversion module, the first laser light forms a first color light. When the first laser light is incident to at least one wavelength conversion region of the wavelength conversion module, the first laser light forms at least one second color light. The microlens array is located on a transmission path of the first color light and the at least one second color light, and the first color light and the at least one second color light form an illumination light after passing through the microlens array.

A projector includes a light outputting apparatus that outputs video light, a projection system that enlarges and projects the video light, and an optical device disposed between the light outputting apparatus and the projection system. The optical device includes a movable section including a glass plate (optical section) having a light incident surface on which the video light is incident, a shaft section that swingably supports the movable section around a first swing axis, and an actuator that causes the movable section to swing. The cross-sectional shape of the shaft section viewed in the direction along the first swing axis is a shape having a plurality of recesses recessed inward.

A novel projection system includes a light source, a phase modulator, an amplitude modulator, and a controller having temporal lightfield simulation capabilities. The phase modulator spatially modulates a lightfield from the light source to generate an intermediate image on the amplitude modulator. The amplitude modulator spatially modulates the intermediate image to form a final image. The controller models the phase state of the phase modulator during transitions between phase modulator frames and generates lightfield simulations of the intermediate image during the transition. The controller utilizes the lightfield simulations to generate and provide sets of amplitude drive values to the amplitude modulator at a faster rate than that at which the phase modulator is capable of switching.

The present invention includes systems and methods for a multi-primary color system for display. A multi-primary color system increases the number of primary colors available in a color system and color system equipment. Increasing the number of primary colors reduces metameric errors from viewer to viewer. One embodiment of the multi-primary color system includes Red, Green, Blue, Cyan, Yellow, and Magenta primaries. The systems of the present invention maintain compatibility with existing color systems and equipment and provide systems for backwards compatibility with older color systems.

Systems and methods for a multi-primary color system for display. A multi-primary color system increases the number of primary colors available in a color system and color system equipment. Increasing the number of primary colors reduces metameric errors from viewer to viewer. One embodiment of the multi-primary color system includes Red, Green, Blue, Cyan, Yellow, and Magenta primaries. The systems of the present invention maintain compatibility with existing color systems and equipment and provide systems for backwards compatibility with older color systems.