An illumination system configured to provide an illumination beam is provided and includes a light-source module and a first and a second wavelength conversion devices. The light-source module provides a first and a second excitation beams. The first wavelength conversion device is disposed on a path of the first excitation beam and has first regions and at least one first boundary disposed between every two adjacent first regions. The second wavelength conversion device is disposed on a path of the second excitation beam and has second regions and at least one second boundary disposed between every two adjacent second regions. The second regions correspond to the first regions. A time point when the first boundary gets into the path of the first excitation beam is different from a time point when the second boundary gets into the path of the second excitation beam. A projection apparatus is also provided.

Provided are a light source device capable of reducing color irregularities while having a compact size, and a projector including this light source device. A light source device includes: an excitation light irradiation unit 70 that emits excitation light; a rotary wheel unit 100 including a rotary wheel 101 having a filter region 104 that reflects or transmits light in a predetermined wavelength band different from a wavelength band of the excitation light and transmits the excitation light, and a transmission bending region 106 that bends and transmits the excitation light; and a fixed phosphor 200 that is irradiated with the excitation light transmitted through the filter region 104 and emits fluorescence including light in the predetermined wavelength band toward the filter region 104. The rotary wheel unit 100 is configured so that an optical axis of the excitation light that is transmitted through the rotary wheel 101 or is reflected from the rotary wheel 101 overlaps with an optical axis of the fluorescence in the predetermined wavelength band reflected from the filter region 104 or transmitted through the filter region 104.

A light source apparatus includes an excitation light shining device for emitting excitation light, a rotational wheel device including a rotational wheel including a filter area for transmitting light in a predetermined wavelength range differing from a wavelength range of the excitation light and reflecting the excitation light and a direction-changing transmission area for transmitting the excitation light while changing a direction thereof, and a luminescent light emission device which receives the excitation light reflected on the filter area to thereby emit luminescent light including the light in the predetermined wavelength range towards the filter area, and the rotational wheel device is disposed so that an axis of the excitation light which passes through the direction-changing transmission area and an axis of the luminescent light in the predetermined wavelength range which passes through the filter area are superposed on each other.

An endoscope system includes: a processor that generates first and second feature amount distribution images of a living tissue from an imaged image of the living tissue and generates a second feature amount distribution processed image from these distribution images; and a display that displays the second feature amount distribution processed image. The processor generates a mask image of the second feature amount distribution image by, in the first feature amount distribution image, setting a pixel whose pixel value representing the first feature amount is less than a lower limit value as a non-transmissive pixel having a transmittance of zero and setting a pixel between an upper limit value and the lower limit value as a transmissive pixel while giving the pixel a transmittance determined continuously or stepwise in accordance with the pixel value in the first feature amount distribution image.

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.

A rotation wheel including a turntable and a motor is provided. The turntable is connected to the motor. The turntable has a first surface used for receiving an incident beam and a second surface opposite to the first surface. The first surface includes a light adjusting surface and a connecting surface. The connecting surface is used to connect the light adjusting surface and the motor. The light adjusting surface is perpendicular to a rotating axis of the motor. At least a part of the connecting surface is neither parallel nor perpendicular to the rotating axis.

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 light-recycling light system (LRLS) that, in some embodiments, uses a transparent solid body (also called a lens) with some surfaces having total-internal-reflection (TIR) characteristics, optionally having no reflective coatings, making the system easy to make and low cost. In some embodiments, the lens includes an input face, an output face, and a curved (elliptical or parabolic) side surface that exhibits TIR, wherein the curved side surface defines a first focus at the input face and a second focus at the output face, so recirculating light entering at the first focus and reflecting at one side of the curved surface by TIR toward the second focus, hen reflects at the second focus toward the opposite side of the curved surface, and then reflects at the second side of the curved side surface by TIR toward the first focus. A light source emits light at the first focus.

A color gamut conversion module, a conversion method thereof, and a projection device are provided. The color gamut conversion module includes a wavelength conversion element and a light filtering element. The wavelength conversion element includes at least two wavelength conversion regions, and the light filtering element includes at least one filtering region. Each filtering region is a single-band light filtering region or a multi-band light filtering region. In a visible light transmittance spectrum, the single-band light filtering region includes a band-pass wave band, and the multi-band light filtering region includes a plurality of first band-pass wave bands and a plurality of first cut-off wave bands. In a first color gamut mode, the wavelength conversion element and the light filtering element rotate at a first relative rate. In a second color gamut mode, the wavelength conversion element and the light filtering element rotate at a second relative rate.

A rotation wheel, comprising a substrate, a driving assembly, a clamping member and a balancing assembly. The driving assembly is connected with the substrate, and is configured to drive the substrate to rotate around an axis of the driving assembly as the central axis. The clamping member is disposed along the axis on the substrate. The balancing assembly includes at least one balancing material, an adhesive material and at least one channel. The adhesive material encapsulates the balancing material and is filled into the channel to fix the balancing assembly onto the clamping member. The rotation wheel and the projection apparatus of the invention exhibit favorable structural reliability.