A light source device according to the present disclosure includes a first light source section for emitting a first light flux, a second light source section for emitting a second light flux, a third light source section for emitting a third light flux, a first reflecting member, a second reflecting member for reflecting the second light flux, and a polarization combining element. With respect to the polarization combining element, the first light flux and the second light flux are light polarized in a first polarization direction, and the third light flux is light polarized in a second polarization direction, and the first and second reflecting members are disposed so that a distance between the first light flux and second light flux becomes smaller after incidence than before the incidence. The polarization combining element combines the first light flux, the second light flux, and the third light flux with each other.

A device includes a light source configured to generate first light, an optical element configured to reflect light incident on the optical element at a first angle of incidence and transmit light incident on the optical element at a second angle of incidence smaller than the first angle of incidence, a first reflecting unit, a second reflecting unit, and a conversion unit on which the first light is incident and which is configured to emit second light, wherein the first light is reflected by the first reflecting unit, passes through the optical element, and is then incident on the second reflecting unit, and wherein the second reflecting unit reflects the first light to the conversion unit.

A light source device according to an embodiment of the present disclosure includes: a first light source section that emits light in a first wavelength region; a wavelength conversion section that is disposed on an optical path of the light in the first wavelength region, and is excited by the light in the first wavelength region emitted from the first light source section to emit light in a second wavelength region different from the first wavelength region; a polarization separation element that is disposed between the first light source section and the wavelength conversion section, and separates incident light on the basis of polarization; and a color separation element that is disposed between the first light source section and the polarization separation element, and separates incident light on the basis of a wavelength region.

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.

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.

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.

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.