1178 results about "Color wheel" patented technology

Various embodiments described herein comprise illuminators comprising a phosphor color wheel for producing colored light. Light of a first wavelength emitted by a light source is incident on a phosphor color wheel comprising a plurality of different regions, where at least one of these regions comprises a phosphor that fluoresces at a second wavelength when illuminated with light of the first wavelength. The light from the light source and the different regions of the phosphor color wheel are movable with respect to each other such that as the different regions are illuminated by the light, different colors are produced.

Method and devices for emitting electromagnetic radiation at high power using nonpolar or semipolar gallium containing substrates such as GaN, AlN, InN, InGaN, AlGaN, and AlInGaN, are provided. The laser devices include multiple laser emitters integrated onto a substrate (in a module), which emit green or blue laser radiation.

A digital micro-mirror device (DMD) format conversion system for outputting a stereoscopic encoded optical signal using a DMD and a color wheel is provided. The DMD format conversion system includes a 3D data formatter for receiving an input signal and a DMD data formatter for receiving an output signal having stereoscopic image information and control information from the 3D data formatter and for outputting a DMD output signal having stereoscopic image information and control information. A color wheel control signal and output digital micro-mirror device data are synchronized based on an output frame rate generated by the 3D data formatter independent of the original input frame rate.

A color wheel comprises: a rotatable disc having a light reflective face and a region of photoluminescence material deposited on the light reflective face. The region of photoluminescence material comprises a substantially uniform thickness layer of a mixture of particles of the photoluminescence material that is deposited on the light reflective face of the disc by screen printing. The photoluminescence materials can comprise blue light or UV excitable photoluminescence materials such as phosphor materials or quantum dots. Color modulated light sources and a method of manufacturing a color wheel are also disclosed.

A color wheel assembly for use in a projector for stereoscopic imaging. The color wheel assembly includes a first portion able to polarize light in a first orientation and a second portion able to polarize light in a second orientation. The first and second portions allow the color wheel assembly, when in an image projector, to produce separate polarized images to achieve a stereoscopic image.

A device used in projecting or transmitting stereoscopic images is provided. The device includes a multi-section light emitter, such as a “color wheel or a series of light emitting diodes (LEDs) configured to emit light energy in multiple sections. Each section of light energy has an optical attribute associated therewith, such as color. Light energy projected in at least two sequential sections by the multi-section light emitter provides light energy having identical optical attributes, such as identical colors (red, green, or blue) but different perspective views associated with each sequential section, where the same optical attributes being employed in adjacent sections is referred to as “concatenation.” Different polarization attributes or polarization axis orientations may be employed within each section to facilitate stereoscopic image transmission and such concatenation in many cases reduces “judder” or other adverse visual effects.

A color wheel unit of a projector includes a motor and a color wheel. The color wheel is synchronized with the rotating motion of the motor. The color wheel has a light-irradiated area and a non-irradiated area. The light-irradiated area is positioned in an outer margin of the color wheel and at least a phosphor layer is located on the light-irradiated area. The non-irradiated area is positioned at the inner portion of the color chip. A number of fan blades are located in the non-irradiated area. The fan blades are synchronized with the rotating motion of the color wheel that generates air flow to enhance heat dissipation efficiency of the color wheel.

The present invention provides a light source apparatus and an image projection apparatus having the light source apparatus. The light source apparatus includes a lamp for emitting white illumination light, a color wheel for sequentially switching a color filter on which illumination light emitted from the lamp is incident, a wheel driving unit for controlling rotation of the color wheel, an LED light source unit for emitting at least one color of illumination light, an LED driving unit for controlling illumination light of the LED light source unit, an optical synthesis unit capable of optically synthesizing illumination light from the lamp and illumination light from the LED light source unit and emitting such synthesized illumination light, and a system controlling unit for controlling the wheel driving unit and the LED driving unit so that each illumination light synthesized can be the same in color.

A light source device and an image display apparatus include a Blue Laser Diode (B-LD) light source unit, a dichroic mirror to reflect substantially collimated Blue (B) light from the B-LD light source unit, a lens to focus the B light reflected by the dichroic mirror, and a color wheel comprising a Green (G) fluorescent section which is excited by the collimated B light to emit and to reflect G light and a B mirror reflector to mirror-reflect the B light, wherein a center of a light flux of the B light reflected by the dichroic mirror is on other than an optical axis of the lens.

The invention discloses a three-dimension measuring system for a dynamic object, which comprises a clock synchronous controller, a digital light processing (DLP) projector, two charge coupled device (CCD) cameras, an image acquisition card and a computer, wherein a color wheel for generating colorful images is removed from the DLP projector, included angles between optical mandrels of the CCD cameras and the optical mandrel of the DLP projector are both between 20 and 60 degrees, and the relative positions of the DLP projector and the CCD cameras are unchanged during measurement; the computer is a graphic card with a calculation-based uniform equipment framework; and the clock synchronous controller is connected with the DLP projector and the CCD cameras respectively, the DLP projector is connected with the computer, and the CCD cameras are connected with the computer through the graphic card respectively. The system has a most obvious characteristic of high measuring speed and can calculate and display the three-dimensional information of the dynamic object in real time.

The invention discloses a light source system, an illuminating device and a projecting device. The light source system comprises a color wheel and a light path combining system. The color wheel is used for receiving at least two bundles of incident lights at different positions and correspondingly outputting at least two bundles of emergent lights. The light path combining system is used for carrying out light path combination on at least two bundles of the emergent lights. The color wheel is provided with a first region; the first region receives first incident lights; and wavelength conversion is carried out on the first incident lights so as to generate first emergent lights. With the adoption of the manner, the quantity of the color wheel can be sufficiently reduced and the volume of the light source system is effectively reduced; and meanwhile, the cost of the light source system is effectively reduced.

A wavelength converting member is provided, comprising a sealed capsule at least partly made of sintered polycrystalline ceramic, for example sintered polycrystalline alumina, said capsule defining at least one sealed cavity; and—a wavelength converting material contained within said sealed cavity. The wavelength converting member has high total forward transmission of light, high thermal conductivity, high strength and provides excellent protection for the wavelength converting member against oxygen and water. The wavelength converting member can advantageously be applied in a light emitting arrangement or as a color wheel for a digital image projector.

Light emitted from a lamp enters a color wheel having a region for allowing a predetermined color to pass therethrough, is reflected on a mirror, and enters a DMD. After this, the light is reflected by the DMD and enters a color sensor, which then detects the color of the transmitting light. A projection apparatus automatically synchronizes the control on the rotation of the color wheel and the control on the proceeding direction of the transmitting light by the DMD, based on a color time-division pattern of the transmitting light detected by the color sensor.

The present application describes embodiments of a neutral density color wheel filter. According to one embodiment, a neutral density color wheel (100) includes an opaque coating (135) over one or more color segments (120, 130, 140, 150, 160, 170) with randomly placed transmissive regions (131). The transmissive regions (131) can be configured to substantially transmit incident light and the opaque coating (135) can be configured to substantially block or absorb the incident light. Alternatively, the transmissive regions (131) can be configured to substantially transmit the incident light. The color segments with opaque coating (135) and transmissive regions (131) substantially eliminate light recycling due to the reflection from the color wheel. The light transmission from the color wheel (100) is independent of the optics of a display system.

For displaying a color image by recombination of several single color images, parasitic noise like speckles due to scattering within the system, in particular when laser light is involved, with the invention a significant improvement with a low number of parts can be realized by use of a color wheel that comprises in radially divided zones refractive elements for redirecting light beams incoming at different impinging angles and redistributing elements, e.g. a hologram, that provide for a defined output beam in an optical axis. The sequence of the individual light processing zones on the color wheel are synchronized with respective laser sources. The invention combines the functionality of plural elements, reduces speckles and avoids losses.

A video projector (1) comprises a light source (11) enclosed in a lamp box (12), an optical engine (100) including a color wheel (13), an optical tunnel (15), a mirror (16) and a DMD (Digital Micro-mirror Device) (17), and a blower fan (30a) disposed in the vicinity of the light source (11) and below the optical engine (100). The blower fan (30b) sucks air through a portion of the optical engine (100) where the optical tunnel (159 and so an are provided except the color wheel (13), generates a cooling air and exhausts a part of the cooling air toward the color wheel (13) and the rest of the cooling air toward the light source (11), so that the elements of the optical engine (100) and the light source (11) are cooled by the blower fan (30b) simultaneously.

A display system 100 includes a light source 110 and a color wheel 114. An optical section 112 is arranged to receive light from the light source 110 and to direct the light toward a color wheel 114. A digital micromirror device 122 is arranged to receive the light from the color wheel 114 and to direct image data toward a display. The image data includes an array of pixels arranged in rows and columns. The array of pixels is arranged as curved color bands during a first time period and rectangular color bands during a second time period. The second time period being concurrent with but of a shorter duration than the first time period.

The invention provides a light source system and a projection device. The light source system comprises a light source, a color wheel and a driving device. The light source is used to generate exciting light; at least two types of functional materials are arranged on the color wheel; the driving device is used to drive the color wheel to enable light spots formed on the color wheel by the exciting light to act on the color wheel along a first path and at the same time to irradiate the functional materials (at least two types), so that the exciting light can generate a type of output light under the action of each type of functional material (at least two types); and the output light generated by the functional materials (at least two types) is different in color. The functional materials (at least two types) are arranged at different areas of the color wheel or the functional materials are arranged in a blended manner, and the proportion of the functional materials within the light spots is uneven. Through the manner, the light source system and the projection device can avoid the interference among the functional materials while output light with different colors is generated at the same time.

A color wheel device can set a desired display mode without using a complex mechanical apparatus. For example, a color wheel device 1 includes a first color wheel 10 having transmitting regions of W, R, G, B in a circumferential direction and rotated on an axis, a second color wheel 20 having transmitting regions of W, R, G, B in a circumferential direction and rotated at the same axis of the first color wheel, and selecting means for selecting a relative location between the first and second color wheels 10, 20. While the first and second color wheels are rotated, the light is entered into the first color wheel 10 and is outputted from the second color wheel 20.

The invention belongs to the field of design projection equipment optical systems, particularly relates to a projection optical system improving a light utilization rate and projection brightness, andaims to solve the problem of low light utilization rate and complex system structure which exist in the prior art. Polarized light P emitted by a laser source passes through a convergent mirror and is transmitted by a polarized beam splitter prism, polarized light P transmitted by the polarized beam splitter prism passes through a color wheel, an integral square rod and a relay lens group in sequence and is incident to a DMD, emergent light in a projection direction of the DMD is emergent through a project lens, emergent light in a non-projection direction of the DMD passes through a reflex lens group to obtain polarized light S, and polarized light S reflected by the polarized beam splitter prism and the polarized light P transmitted by the polarized beam splitter prism are coaxially incident to the color wheel; and the reflex lens group includes a total reflector A, a relay lens group B, a total reflector B and a 1/2 wave plate; and the emergent light in the non-projection directionof the DMD is sequentially reflected by the total reflector A and refracted by the relay lens group B and 1/2 wave plate to obtain polarized light S.