A wavelength conversion element according to the present disclosure includes a wavelength conversion layer having a first surface having a recessed part, and a plurality of air holes, and configured to be excited by light in a first wavelength band to thereby generate light in a second wavelength band different from the first wavelength band, a particle disposed in the recessed part, a light transmissive member disposed so as to cover the recessed part and the particle, a reflecting layer disposed so as to be opposed to the first surface of the wavelength conversion layer, and a base member disposed so as to be opposed to the reflecting layer.

Disclosed is an integrated projection and illumination device. The integrated projection and illumination device includes a lamp housing, a mounting assembly, an illumination assembly and a projection assembly; and the mounting assembly includes a mounting disc, a mounting ring and clamping blocks, elastic members being arranged between the clamping blocks and the mounting ring, the mounting disc being provided with top surface connectors and an outer limiting edge, the outer limiting edge being capable of being clamped on the clamping blocks protruding out of the inner wall of the mounting ring, the mounting disc being further provided with pressing blocks, and the pressing blocks rotating along with the mounting disc and being capable of making contact with the clamping blocks and pressing the clamping blocks into the mounting ring during rotation. The present disclosure can be used for illumination and projection, and further features convenient dismounting and mounting.

A projector includes a monochromatic self-luminous display panel; a color filter disposed in front of the monochromatic self-luminous display panel; a filter driver configured to move the color filter in direction parallel to the monochromatic self-luminous display panel; a micro lens array disposed in front of or behind the color filter and configured to convert light emitted from the monochromatic self-luminous display panel into parallel light; a projection lens disposed in front of the micro lens array and the color filter and configured to project light that has passed through the micro lens array and the color filter onto a screen; and a processor configured to control the monochromatic self-luminous display panel and the filter driver.

Dual or multi-modulation display system are disclosed that comprise projector systems with at least one modulator that may employ non-mechanical beam steering modulation. Many embodiments disclosed herein employ a non-mechanical beam steering and/or polarizer to provide for a highlights modulator.

A homogenizing element includes a light incident end, a light exit end, a first surface, a second surface, a reflective layer and a first dichroic layer. The first surface extends from the light incident end to the light exit end. The second surface extends from the light incident end to the light exit end, and the second surface overlaps the first surface and is non-parallel to the first surface. The first dichroic layer is disposed on the first surface and configured to allow a first beam to pass therethrough and reflect a second beam. The reflective layer is disposed on the second surface and configured to reflect the first beam. A projection device adopting the homogenizing element is also provided. The homogenizing element and the projection device provided can adjust the beam angles of different color beams respectively.

Provided is a structured light projector including a light source configured to emit light, and a nanostructure array configured to form a dot pattern based on the light emitted by the light source, the nanostructure array including a plurality of super cells each respectively including a plurality of nanostructures, wherein each of the plurality of super cells includes a first sub cell that includes a plurality of first nanostructures having a first shape distribution and a second sub cell that includes a plurality of second nanostructures having a second shape distribution.

A laser light source (300), a wavelength conversion light source, a light combining light source, and a projection system. The laser light source comprises a laser element array, a focusing optical element (33), a collimation optical element (34), an integrator rod (36) for receiving and homogenizing a secondary laser beam array (382), an angular distribution control element (35) disposed on the light path between the laser element array and the integrator rod (36) for enlarging the divergence angle of the laser beam array (382) in the direction of the short axis of the light distribution, such that the rate between the divergence angle of each of the secondary laser beam that enters the integrator rod (36) in the direction of the short axis of the light distribution and the divergence angle in the direction of the long axis is greater than or equal to 0.7.

An optical device is provided including a light-imaging component configured to focus light fed to the light-imaging component in at least one focusing spot, wherein the light fed includes at least one predefinable wavelength; and a conversion apparatus including at least one phosphor which is designed to convert light having the at least one predefinable wavelength into conversion light, wherein the conversion apparatus is arranged in such a way that the at least one phosphor is arranged in the focusing spot of the light-imaging component. The light-imaging component is configured to generate at least two focusing spots, and the conversion apparatus is arranged in such a way that the at least two focusing spots are positioned on the at least one phosphor.

Projection systems and/or methods for efficient use of light by recycling a portion of the light energy for future use are disclosed. In one embodiment, a projection display system is disclosed comprising a light source; an integrating rod that receives light from said light source at a proximal end that comprise a reflective surface which may reflecting/recycle light down said integrating rod; of reflecting light down said integrating rod; a relay optical system, said relay optical system further comprising optical elements that are capable of moving the focal plane of the projector display system; and a modulator comprising at least one moveable mirror that reflects light received from the integrating rod in either a projection direction or a light recycling direction.

An optical device includes a first plate having a first transparent region defining an exit face of the device, and a second plate having a second transparent region defining an entrance face of the device. At least one lens is formed over at least one of the first and second transparent regions. First and second planar reflectors are spaced apart and fixed between the first and second plates in mutually-parallel orientations diagonal to the first and second plates, thereby defining an optical path through the device from the entrance face, reflecting from the first and second reflectors, through the exit face and passing through the at least one refractive surface.