The invention provides a system (1000) for processing light, the system (1000) configured to provide along a main beam path (1105) a beam (1005) of system light (1001), wherein the system light (1001) comprises one or more of first light (111) having a first spectral distribution, second light (121) having a second spectral distribution, and third light (131) having a third spectral distribution, wherein the first, second, and third spectral distributions mutually differ, wherein the system (1000) comprises: —a lighting arrangement (100) configured to provide along a first beam path (1101) a first beam (101) comprising primary light (103) having a spectral power distribution with at least 80% of the spectral power consisting of one of the first light (111), the second light (121), and the third light (131), and/or configured to provide along a second beam pat (1102) a second beam (102) comprising composed light (104) having a spectral distribution with at least 80% of the spectral power consisting of the two others of the first light (111), the second light (121), and the third light (131); —an optical filter system (200) comprising a plurality of segments (210), wherein two or more segments (210) have different transmission characteristics for one or more of the primary light (103) and the composed light (104); wherein during operation of the system (1000) the optical filter system (200) is configured to have the segments (210) of the plurality of segments (210) sequentially intercept the main beam path (1105) or the second beam path (1102), wherein during a time period (tsp) the beam path (1105, 1102) is partially intercepted by a first segment (211) and partially intercepted by a second segment (212); —a control system (300) configured to control the lighting arrangement (100) and the optical filter system (200) such that during at least part of the time period (tsp) at least 80% of a spectral power distribution of the system light (1001) of the beam (1005) of system light (1001) consists of the primary light (103).

A wavelength conversion apparatus according to an aspect of the present disclosure includes a wavelength conversion layer that converts excitation light in terms of wavelength and an optical array layer formed of a plurality of cells each having a first surface on which light as a result of the wavelength conversion performed by the wavelength conversion layer is incident and a second surface via which the light exits. The optical array layer has a reflection surface that extends from the first surface to the second surface, is located at an interface between the cells adjacent to each other, and reflects the light.

The present disclosure relates to systems, methods, and computer readable media for modeling thermal effects within a multi-laser device. For example, systems described herein may include a plurality of laser devices that output energy streams having corresponding operating windows. One or more systems described herein may include a set of accumulators for tracking quantities of energy samples within operating windows and populating a queue representative of the tracked quantities. One or more systems described herein may additionally include filters and a summing module for determining temperature values for operating windows and synchronizing the temperature values with one another to determine an accurate system temperature for the multi-laser device. The features described herein facilitate synchronization of data for corresponding operating windows to provide an accurate determination of system temperature based on a combination of self-heating and crosstalk effects between multiple laser devices.

Four of laser light source sections each includes a semiconductor laser. Any two of the laser light source sections are disposed in an imaginary plane perpendicular to the center axis of a luminous flux and on a first imaginary line that intersects with the center axis so as to face each other with the center axis sandwiched between the two laser light source sections, and other two of the laser light source sections are disposed on a second imaginary line perpendicular to the first imaginary line so as to face each other with the center axis sandwiched between the two laser light source sections. The laser light source sections are at the same distance from the center axis. The first light, the second light, the third light, and the fourth light are each linearly polarized light and have the same polarization direction.

An image projection device includes a projector configured to project an image; and an operation unit configured to receive an operation performed by an operator. The projector is in a projecting state while the operation unit is receiving a pressing operation performed by the operator, and the projector is in a non-projecting state while the operation unit is not receiving a pressing operation performed by the operator.

A light source device is provided in which the number of LD chips can be easily optimized and that has a high light utilization efficiency. The light source device includes a first light source unit that emits a first monochromatic light, a second light source unit that emits a second monochromatic light of the same color as the first monochromatic light, an optical member that splits the first monochromatic light emitted by the first light source unit into a first split light and a second split light and that integrates the first split light and the second monochromatic light emitted by the second light source unit into one optical path, and a phosphor unit that receives the second split light or the integrated light to emit fluorescent light.

A light source system and a projection system, comprising a light source; a switching system switching light emitted by the light source into at least two light beams having a preset proportion in the manner of time division or light intensity division; a color wheel assembly located in a transmission light path of each light beam of the at least two light beams, with the color wheel assembly generating light having different colors and a preset proportion under the irradiation of each light beam of the at least two light beams, and light of different colors being able to synthesize a projection image after being modulated by a light modulation system, wherein the switching system can adjust the proportion of the at least two light beams according to the parameters of the projection image, so as to adjust the proportion of the light of different colors.

A light source apparatus according to an embodiment of the present technology includes a first light source module and a second light source module. The first light source module emits first emission light. The second light source module includes a light source unit that generates second emission light, and a switch unit that switches a position of an emission optical axis of the second emission light generated by the light source unit between a first optical axis position for emitting synthetic light of the first emission light and the second emission light and a second optical axis position for separating the first emission light and the second emission light for emission.

The present invention relates to a display device and a method of controlling therefor. According to one embodiment of the present invention, a display device includes a memory configured to store at least one or more contents, at least one or more sensors, a network interface module configured to communicate with at least one or more lights, a display module configured to output the at least one or more contents stored in the memory, and a controller coupled with the memory, the sensor, the network interface module and the display module. In this case, the controller controls the display module to output specific content stored in the memory at specific timing and controls the network interface module to transmit a control signal to a specific light at the specific timing.

An image projection apparatus includes a first light source to emit a first excitation light of a specific wavelength, a second light source to emit a second excitation light of a specific wavelength, a first planar wavelength conversion element to convert the first excitation light into a light of a different specific wavelength, and a second planar wavelength conversion element to convert the second excitation light into a light of a specific wavelength different from the specific wavelength of the first excitation light converted by the first planar wavelength conversion element. In the image projection apparatus, the first planar wavelength conversion element and the second planar wavelength conversion element are arranged at positions different from each other, and the first planar wavelength conversion element and the second planar wavelength conversion element have a first plane and a second plane.