The present invention provides a display substrate and a display device. The display substrate comprises a backplate and a plurality of pixel units; each pixel unit of the pixel units comprises a white light LED; a collimating lens configured to collimate a white light beam; a prism layer configured to reflect the white light beam to generate monochromatic lights of different colors in a first direction and a second direction; transmittance controllers configured to modulate the transmittance of monochromatic lights of different colors; and scattering layers configured to scatter monochromatic lights of different colors. In the present application, achieving the double-sided display of a Micro-LED display device, increasing the functionality and interestingness of the display device, and reducing the workload for mass transfer of the Micro-LED display device and the complexity of circuit arrangements of the display device.

A light source system and a display apparatus are provided. The light source system includes first and second light emitting assemblies, a wavelength conversion device, an optical assembly, and a light combining device. The first light emitting assembly generates at least one primary color light. The second light emitting assembly generates excitation light. The wavelength conversion device is at least partially disposed on the optical path of the excitation light, and used for receiving the excitation light and generating corresponding excited light. The optical assembly is disposed on the optical path of the excited light, and used for increasing the amount of optical expansion of the excited light. The light combining device is disposed on the common optical path of the primary color light and the excited light and located behind the optical assembly, and used for combining the primary color light and the excited light.

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.

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.

A projector includes a lamp unit, a color separation system that separates first light outputted from the lamp unit into a plurality of color beams, a plurality of liquid crystal panels that modulate the plurality of separated color beams from the color separation system, reduction optical systems that reduce at least one of pencils of light formed of the plurality of color beams modulated by the plurality of liquid crystal panels, a light combining prism that combines the plurality of reduced color beams with one another, and a projection lens that projects second light that is the combined light from the light combining prism. The reduction optical systems are disposed between the liquid crystal panels and the light combining prism, and the area of an effective display region of each of the liquid crystal panels is greater than an effective area of each light incident surface of the light combining prism.

An apparatus for high dynamic range (HDR) modulation includes one or more lasers configured to transmit respective beams of laser light with a single color mode and a PLM optically coupled to the one or more lasers. The PLM is configured to modulate the laser light to produce a first modulated light. The apparatus also includes a phosphor optically coupled to the PLM and configured to receive at least a first portion of the first modulated light from the PLM and to emit a phosphor light with multiple color modes. At least one spatial light modulator (SLM) is also optically coupled to the phosphor and configured to modulate the multiple color modes in the phosphor light and the single color mode to project a second modulated light.

An endoscope comprises a light splitting device for transmitting a first illuminating light and reflecting a second illuminating light emitted by a light source. The first illuminating light passes through a first color filter transmitting a first color. The second illuminating light passes through the second color filter transmitting a second color. The first color is different from the second color. The light splitting device combines a first incident light of the first color and a second incident light of the second color. The first incident light of the first color and the second incident light of the second color pass through an imaging lens and form images of the first color and the second color on an image sensor, respectively. A CFA (color filter array) comprising a plurality of first CFA components of the first color and a plurality of second CFA component of the second color covering the image sensor.

In various embodiments, a beam-parameter adjustment system and focusing system alters a spatial power distribution of a radiation beam, via thermo-optic effects, before the beam is coupled into an optical fiber or delivered to a workpiece.

An optical combiner includes a rotating mirror configured to rotate through a range of angular displacement. During a first time period, the rotating mirror is disposed at a first angular displacement, and is configured to receive a first incident light beam and provide a first output light beam along an output optical axis. During a second time period, the rotating mirror is disposed at a second angular displacement, and is configured to receive a second incident light beam and provide a second output light beam along the output optical axis. The optical combiner is configured to provide a time sequential collimated combined output light beam along the output optical axis. In optical combiner, the rotating mirror can also be configured to dither the combined output light beam.

The light source unit includes a base provided with an opening, a support member fixed to the base at the opening, and a light source assembly fixed to the support member at the opening. The light source assembly includes a light source emitting laser light, a lens disposed on an optical axis of the laser light, and a holding member holding the light source and the lens. The support member has a convex receiving surface extending along the spherical surface so as to surround the optical axis when viewed from a direction parallel to the optical axis. The light source assembly is fixed to the support member by coupling the holding member to the receiving surface at a contact portion with the receiving surface. The receiving surface has a portion located on a side away from the optical axis with respect to a coupling part with the holding member.