Abstract: A color wheel assembly includes a color wheel and a driving motor. The color wheel is attached directly to a hub of the driving motor. Consequently, no additional components are required to fix the color wheel to the driving motor, thereby reducing the number of components and the number of manufacturing processes. Thus, the color wheel assembly as a time-share light dispersing device can be inexpensively manufactured with a high degree of precision.

Abstract: An apparatus for use in forming colored segments of a color filter on a substrate includes at least one pair of first and second masking plates, and a securing device for securing together the first and second masking plates and the substrate. The substrate has an outer periphery and a first surface which is adapted to be coated with the colored segments. The first masking plate overlies the first surface, and has a first outer periphery corresponding to the outer periphery of the substrate, and at least one first cutout part to expose a portion of the first surface. The second masking plate has a second outer periphery corresponding to the first outer periphery, and at least one second cutout part corresponding to the first cutout part.

Abstract: A device for dampening noise in a projection device is provided. The device includes a bracket configured to secure a color wheel assembly to an optical engine and an integrated noise reduction mechanism integrated into the bracket.

Abstract: An adjustable color-temperature projecting device includes a light source for providing light beams, and a filtering means. The filtering means includes red, green and blue filtering sections. The blue filtering section has coatings with different transmissivitys. The intensity of blue primary color light is varied due to the different transmissivitys of the blue filtering section, so that the ratio of blue primary color light in the hybrid light is modified to cause change in color temperature with reduced loss of brightness. Then, the filtering means is moved so that the light beam is projected onto a predetermined location to obtain the desired color temperature.

Abstract: A fixing structure for fixing a color wheel to a base of a projector is provided. The color wheel is rotatably installed and includes a color rotating disc having a plurality of color filters selectively transmitting light of a predetermined wavelength, and a driving source which drives the color rotating disc. The fixing structure includes a first cover member coupled to a base, and a second cover member coupled to the first cover member and together therewith encompassing the color wheel. A bracket is provided to which the color wheel is coupled, and a coupling unit couples the bracket to the second cover member. A buffer member is provided between the first and second cover members and between the bracket and the second cover member for reducing vibration.

Abstract: A color wheel includes a carrier element, a filter group, and a connection component. The carrier element includes a first carrier, and a second carrier. The carrier element rotates around the central axial line. The first carrier has at least one aperture. The filter group has a transparent zone and a filter bonding zone. The filter group and the carrier element share the central axial line. The filter bonding zone has at least one concave zone. The combining component is simultaneously in the apertures of the first carrier and the filter bonding zone to fix the filter bonding zone of the filter group between the first carrier and the second carrier.

Abstract: The present invention provides a color wheel including a motor and a color filter module. The color filter module includes a first color filter having a first transmittance and a second color filter having a second transmittance that is smaller than the first transmittance. 50% of the first transmittance is corresponding to a first light wavelength and a second light wavelength that is larger than the first light wavelength. The second color filter and the first color filter have substantially same hues. 50% of the second transmittance is corresponding to a third light wavelength and a fourth light wavelength that is larger than the third light wavelength. The second color filter satisfies a first condition chosen from the third light wavelength being larger than the first light wavelength or the second light wavelength being larger than the fourth light wavelength.

Abstract: In a color wheel comprising plurality of color filter segments, one of the filter segments consists of a sector portion, and a circular core portion which is formed intergrally at the inner circumferential area of the sector portion, and which is located at the center of the wheel assembled. The inner circumferences of the remaining filter segments are fitted directly to the outer perimeter of the circular core portion of the one segment, whereby the geometric accuracy of the color wheel can be achieved. Also, the alignment process of the filter segments for preventing the color wheel from generating vibrations and noises at the time of spinning at high speed can be simplified or even eliminated thus preventing the number of manufacturing processes from increasing.

Abstract: A color wheel is disclosed having balancing groove. The color wheel includes a carrier, having a central axis about which it is rotated. An external surface and a periphery rotates along the central axis; a color filter plate shares a same central axis with the carrier, wherein an annular groove is disposed on the external surface of the carrier. The groove is shaped, for example in a wedge so that once a balancing substance such as epoxy is added into the annular groove to balance the color wheel, it becomes lodged therein after curing as the opening is smaller than the cured epoxy.

Abstract: In a manufacturing method of a color filter for display devices having a plurality of pixels on a substrate, each pixel includes a reflective layer and a color layer, the method of manufacture includes forming partitions which separate each pixel area from the other pixel areas to comprise the pixel in each pixel area; forming the reflective layer by discharging a first liquid material into each of the pixel areas by a droplet discharge method; and forming the color layer within each of the pixel areas. By this method, color filters can be manufactured without requiring photolithography or other complicated processes, in a short time, using little energy, and at low cost.

Abstract: A color filter assembly. The color filter assembly rotates around a central axis and includes a first carrier, a second carrier, a protrusion and a color filter. The first carrier has a first contact surface and a first joining portion protruding therefrom. The second carrier has a second contact surface and a second joining portion connected to the first joining portion. The protrusion is disposed on the first or second contact surface. The color filter has an opening with the protrusion inserted therein such that the color filter is fixed between the first and second carriers.

Abstract: A flexible medium for a scrolling color changer and method of making thereof. The medium is made by applying an ink using a Meyer Rod which has varying cell lengths along its length. This leaves varying size cells of ink at different locations along the length of the medium. The ink has special characteristics whereby its evaporation rate and viscosity are carefully controlled. The viscosity is such that an amount of levelling will occur will be equal to the distance between any cells, but that cell to cell levelling will not, in general, occur.

Abstract: A color filter (200) comprises pixels (13) separated from each other by partitions (14) formed on a substrate (12) so as to have a plurality of color elements of ink. Dummy pixels (13?) are formed outside the area in which the pixels (13) are formed. The amount of ink applied to each of said pixels and the amount of ink applied to each of said dummy pixels are substantially equal. A protective film (21) covering said pixels (13) is formed so as to also cover said dummy pixels (13?).

Abstract: A color wheel includes lens structures, which are formed on a surface of a substrate opposite to a surface having filter sectors, and which have curved surfaces formed at their abutting ends and positioned along a boundary between adjacent filter sectors. Light impinging on an area of the substrate corresponding to the boundary is deflected due to one of the curved surfaces so as to be surely guided into one of the adjacent filter sectors and to be duly dispersed into a predetermined color, whereby light can be efficiently utilized.

Abstract: 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.

Abstract: A pattern structure has at least two different color filter elements disposed one beside the other on a carrier substrate. Each element includes a layer of dielectric material, the layer of dielectric material residing at at least one of the filter elements on a layer of a material that is resistant to activated oxygen or activated water. The layer of resistant material has a second surface pointing toward the substrate and is made of silicon or silicon dioxide.

Abstract: A color wheel is fabricated with filter sectors formed on both surfaces of a substrate such that filter sectors adjacent to each other are disposed respectively on the top and bottom side surfaces of the substrate, whereby structures as means for demarcating each of the filter sectors can be shaped on the substrate at one time so that the adjacent filter sectors can be positioned with respect to each other with an accuracy of the demarcation of the structures without positioning masking jigs every time each filter is formed.

Abstract: A color filter substrate for a liquid crystal display includes a transparent substrate, and color filters formed on the substrate each with a groove. A transparent conductive layer is deposited onto the color filters to form a common electrode. A chrome layer and a chrome oxide layer are sequentially deposited onto the common electrode to form a black matrix layer. An organic film is formed on the black matrix layer. The organic film suffers ashing such that only the portion of the organic film placed over the groove is left over, and other portions are all removed while exposing the black matrix layer. The exposed portion of the black matrix layer is removed through etching. In this way, the color filter substrate is completed in a simple manner.

Abstract: A color wheel including a color filter, a motor, and a fixing element. The motor has a housing and a motor body, and the housing is set to a side of a central axis of the motor body. The color filter is set on the housing of the motor. The motor body is fixed on the fixing element. A holder is formed on the fixing element, and the holder outwardly extends from the fixing element. In addition, the invention also provides a color wheel further including an auxiliary fixing element, which is set on the fixing element and has an outwardly extending holder.

Abstract: There is provided a display device in which an optical efficiency is improved using a color drum. The display device includes a road lens for totally reflecting an incident light and changing a path of the light. The display device further includes a color drum having a plurality of cell filters arranged cylindrically to face the path of the light outputted from the road lens. Here, the cell filters are in a linear shape. Since the light reflected by the color drum is not lost to the outside, the light efficiency can be enhanced. According to the invention, the linear scroll is possible due to the cell filters that are in the linear shape, so that signal process algorithm can be simplified.

Abstract: The invention provides an electrode plate for a color display, a manufacturing method thereof, and a color display using the display plate, capable of preventing the physical/chemical damage of a color filter or an organic protective film in a more convenient way and capable of improving the adhesive properties with a conductive film.

Abstract: A saturable optical absorber component is made of an inhomogeneous absorption material including a plurality of sets of quantum boxes formed in stacked layers. The sizes of the quantum boxes of each set define an absorption wavelength associated with the set.

Abstract: A color filter array pattern for use in a solid-state imager comprising red sensitive elements located at every other array position, with alternating blue sensitive and green sensitive elements located at the remaining array positions, is disclosed. Since red color is sampled most frequently, the color filter may be part of an in vivo camera system for imaging internal human body organs and tissues.

Abstract: A process for making a unitary color filter disc includes the steps of preparing a disc member having an annular surface, and providing a plurality of differently colored segments on the annular surface. Each of the colored segments is provided by partially masking the annular surface to expose a part of the annular surface and by directly depositing a coloring film on the exposed part of the annular surface.

Abstract: A color wheel including a motor, a vibration damping element and a color filter. In this case, the motor has a housing and a motor body, and the housing is set at the central axis of the motor body. The vibrating damping element is set on the housing of the motor. The color filter is set on the housing of the motor, so that the vibrating damping element is positioned between the motor and the color filter. In addition, two other color wheels are provided.

Abstract: An arrangement of color elements for a color filter. Each of color element groups comprises a first color element, a second color element, a third color element and a fourth color element arranged in sequence. The first color element, the second color element, and the third color element comprising three colors. The second color element and the fourth color element are identical in color and width. An active width W1 of the first color element and an active width W2 of the second color element satisfy the formula: W1=A×W2, A=1.7˜2.3. An active width W3 of the third color element and the active width W2 of the second color element satisfy the formula; W3=B×W2, B=1.7˜2.3.

Abstract: A structure of color elements for a color filter. At least a first, second, and third color element are disposed in a delta-type arrangement. An overlapping portion is formed between two adjacent color elements to serve as a light-blocking area. Each color element is octagonal, having four straight sides and four beveled sides.

Abstract: There is provided an illuminator to emit trichromatic light. It includes a lamp (1) which emits trichromatic light including components whose wavelengths correspond to three primary colors, respectively, and a wavelength-selective optical aperture filter (22) provided at the side of the lamp (1) from which the light of three primary colors go out and consisting of zones working as predetermined optical apertures of which one selectively attenuates or shields a component included in the trichromatic light and having a wavelength corresponding to at least one of the three primary colors while the others allow the light components whose wavelengths correspond to the other primary colors to pass through.

Abstract: The invention concerns a tuneable optical filter (10) comprising: a moveable filter plate (20) and an associated optical region (30) for filtering an input radiation beam (40a) to provide corresponding filtered output radiation (40b), the optical region (30) has spatially varying filtration properties. Piezoelectric actuating elements (70a to 70d) are provided for moving the filter plate (20) and its associated optical region (30) relative to the beam (40a) for selecting a portion of the optical region (30) for use in filtering the beam (40a) and thereby tuning the filter (10), the actuating elements (70a to 70d) are operable when driven by electrical signals to repetitively engage or be in repetitively slidable contact and thereby impart a lateral force to a surface of the filter plate (20) for moving the optical region (30) relative to the beam (40) in at least one dimension.

Abstract: A color wheel module for an image display device prevents the motor from being damaged during balancing processes. The color wheel module includes a spindle, a motor, a carrier, a connection ring and a color wheel. The motor drives the spindle to rotate. The carrier is mounted onto the spindle and is driven by the spindle for rotation. The color wheel includes a plurality of color filters bonded onto the connection ring, and then the bonded color filters and the connection ring are mounted onto the carrier. Thus balancing of the color wheel may be done before it is mounted on the carrier to avoid damaging the spindle and the motor resulting from adding or removing substance during the balancing process.

Abstract: The present invention relates to a single component performing light polarization and color filtering, and to a production process making the component. The component comprises a polarization plate with photo resistant material of three primary colors distributed at a plurality of dot locations on one of its surface, and with light absorbing material disposed between any adjacent two of the dot locations. The production process comprises the steps of forming a dot matrix on a surface of the polarization plate and filling photo resistant material onto the dots of the dot matrix.

Abstract: An optical interference filter (2) is provided by a substrate (1) in which is formed a plurality of parallel slots so as to define layers (slots and substrate laminae) of alternating refractive index. As shown, the filter comprises a central Fabry-Perot resonator slot cavity (3) between two mirror groups (4, 5) of alternating slots and substrate laminae, and is coupled to optical fibres (7) accommodated in V-grooves (6) on either side. For tuning, one mirror group (5) may be movable in the direction of arrow (A), or, where the central resonator is provided by substrate material, by altering its temperature. One or more further Fabry-Perot filters may be formed in the substrate and coupled to the filter (2). The invention encompasses non-resonating filters.

Abstract: A variable bandwidth tunable optical filters comprised of two transparent optical substrates, upon each of which is deposited a linearly variable multilayer interference filter coating which varies in total thickness from end to end in a wedged fashion. This wedge imparts a corresponding variation of the center wavelength of the filter bandpass with respect to the linear position of the coated filter substrates. The variable bandpass tunable filter can be adjusted to a specific center wavelength by moving the filter pair together linearly through the incident beam. The bandwidth of the filter pair is maximized when the two filters are spectrally aligned, and is determined by the bandwidth of the individual filters. The variable bandwidth of the tunable filter can be adjusted by introducing a relative linear offset between the linearly variable filter pair.

Abstract: Precise V-grooves allowing an optical fiber to project are formed in respective main surfaces of an upper plane substrate and a lower plane substrate. The optical fiber is mounted on one plane substrate, and a multi-layer film filter 2 is inserted into a filter insertion groove 1 crossing the precise V-groove in the main surface of the other plane substrate. Then, using the projecting optical fiber and the other precise V-groove as a guide rail, two plane substrates grapple the multi-layer film filter to fix and mount the filter. In an optical filter module obtained in this manner, a process of adjusting an optical axis between input/output optical fibers is eliminated, and displacement of the inserted optical filter is reduced.

Abstract: An ND filter includes a substrate formed in a plastic sheet and a deposit film deposited on a surface of the substrate. The plastic sheet is composed of a norbornene resin and the deposit film is composed of a nickel-chromium alloy. The norbornene resin has a small thermal shrinkage factor and prevents the plastic sheet from wrinkling. The nickel-chromium alloy has a good oxidation resistance and ensures a uniform light transmittance of the deposit film over the entire visible light region.

Abstract: The method according to the present invention includes the steps of inputting an optical signal having a first wavelength and probe light having a second wavelength different from the first wavelength into a nonlinear optical medium, broadening the spectrum of the probe light through cross phase modulation between the optical signal and the probe light inside the nonlinear optical medium, and extracting a signal component including a modulated component of the optical signal and having a band narrower than the band of the spectrum broadened. According to the present invention it can be possible to provide a method and device which can easily convert the wavelength of signal light into an arbitrary wavelength in performing optical 3R functions.

Abstract: The present invention has an object to provide a manufacturing method of readily realizing an optical filter having a flat transmission characteristic and a superior cutoff characteristic relative to adjacent bands. To this end, with the manufacturing method of the present invention, a band-pass filter consisting of a dielectric multilayer coating is formed on one plane of a transparent substrate, and an antireflection coating is formed on the other plane of the substrate. The substrate is then divided into a plurality of segments, and adjacent two segments are selected and adhered to each other by a transparent adhesive with band-pass filter surfaces of these segments facing to each other, while interposing a glass spacer between the band-pass filter surfaces, to thereby obtain an optical filter.

Abstract: The present invention provides a method of producing a pattern member at high productivity and low cost. In the method of the present invention, inks of plural colors are applied on a substrate and dried to produce several kinds of single color films having color ink layers of plural colors formed on the surface, then, the single color film of R color is overlapped on the substrate, and the overlapped substrate and single color film are pressed by a pressing member having a convex portion of given pattern formed on the surface, to transfer parts corresponding to the pattern of the convex portion of the color ink layer to the substrate. The above-described operation is repeated at frequency corresponding to plural colors to form a multi-color pattern composed of color ink layers of plural colors of given pattern on the substrate.

Abstract: A color wheel comprisinga carrier having a central axis, a first principal surface, and a periphery, the carrier being rotatable around the central axis; and a filter assembly having a first principal surface and having the central axis as its central axis, wherein the first principal surface of the carrier is adjacent to the first principal surface of the filter assembly, the first principal surface of the carrier includes a carrier bonding zone, the first principal surface of the filter assembly includes a filter bonding zone, the carrier bonding zone and the filter bonding zone are bound together by an adhesive, a loop-shaped groove is formed around the carrier bonding zone or the filter bonding zone and is innerly apart from the periphery so that an excessive portion, if any, of the adhesive can flow into the loop-shaped groove.

Abstract: A rotary optical filter apparatus containing an optical filter is integrated with a sirocco type cooling fan having a plurality of fan blades. The cooling fan is supported by a rotary holder of the optical filter apparatus so as to be integrally rotatable with the optical filter. The cooling fan inhales an air from its center part and discharges thus inhaled air from its outer peripheral part due to an action of the fan blades upon rotating, so as to make an airflow along the filter face and cool the optical filter.

Abstract: Apparatus and methods for converting a monochrome night vision or other electro-optical device into one that provide a sensation of full color, including from red to blue with white and black. Preferred apparatus of the invention comprise an electro-optical viewing device, particularly a mono-chromatic night vision device, that comprises a plurality of light filters. A first light filter system is positioned at a light-input end of the device, and a second light filter system is positioned at a light-output end of the device, whereby the plurality of filters systems provide to a viewer a sensation of full color, including from red to blue with white and black.

Abstract: A color wheel having a bonding apparatus consists of a carrier and a filter set. The carrier is a circular disk and has a first surface and a second surface opposite to each other. The first surface has a bulged rim formed thereon. The carrier has a plurality of apertures formed thereon between the bulged rim and the perimeter thereof. The filter set is mounted onto the first surface of the carrier. Adhesive is injected and filled into the apertures from the second surface such that the filter set is bonded to the first surface of the carrier to form the color wheel of the invention. The color wheel thus made has evenly coated adhesive without increasing the thickness thereof.

Abstract: The invention relates to pigment preparations comprising a metal complex of a mono-, di-, tri-, or tetraanion of an azo compound that in its free acid form conforms to formula (I) or a tautomeric form thereof wherein R and R′ are independently OH, NH2, NH—CN, acylamino, or arylamino, and R1 and R1′ are independently —OH or —NH2, with a metal selected from the group consisting of Na, K, Ca, Sr, Ba, Zn, Fe, Ni, Cu, Mn, La, Li, Cs, Mg, Cd, Co, Al, Cr, Sn, and Pb, wherein the metal complex hosts at least one guest compound.

Abstract: An optical element structured in accordance with the invention comprises a substrate with at least two zones with different optical functions. The coating systems in the two zones can in each case be subdivided into a zone-specific internal partial coating system and a complementary partial coating system that is common to all the zones, where the complementary partial coating system comprises at least one layer and in the zones in which the internal partial coating systems comprises at least one layer said coating system is arranged between the substrate and the complementary partial coating system.

Abstract: A rotary optical filter apparatus containing an optical filter is integrated with a sirocco type cooling fan having a plurality of fan blades. The cooling fan is supported by a rotary holder of the optical filter apparatus so as to be integrally rotatable with the optical filter. The cooling fan inhales an air from its center part and discharges thus inhaled air from its outer peripheral part due to an action of the fan blades upon rotating, so as to make an airflow along the filter face and cool the optical filter.

Abstract: It is an object to provide an improved filter or illumination device. In order to achieve the above object, an illumination device is provided having multiple optical color filters wherein a first time period, required for at least one of the multiple optical color filters to pass across a light path, is different from a second time period, required for each of the other optical color filters to pass across the light path. According to another aspect of this invention, an illumination device has multiple optical color filters and an optical member wherein a boundary, which extends in a direction, is provided between one of the multiple optical color filters and another one of the multiple optical color filters, and the optical member includes an inlet for receiving light from the optical color filters, wherein the inlet extends in a first direction corresponding to the direction of the boundary when the boundary crosses the light path, for a greater distance than the inlet extends in a second direction.

Abstract: The invention relates to a saturable light absorber adapted to receive different focused spectral components, wherein the structure of said saturable light absorber comprises microcavities integrated into a substrate and each associated with a respective one of said spectral components, each microcavity comprising a saturable absorber layer delimited by a top reflector and a bottom reflector and being disposed and having dimensions such that it receives only the focused spectral component associated with it.

Abstract: A color wheel comprisinga carrier having a central axis, a first principal surface, and a periphery, the carrier being rotatable around the central axis; and a filter assembly having a first principal surface and having the central axis as its central axis, wherein the first principal surface of the carrier is adjacent to the first principal surface of the filter assembly, the first principal surface of the carrier includes a carrier bonding zone, the first principal surface of the filter assembly includes a filter bonding zone, the carrier bonding zone and the filter bonding zone are bound together by an adhesive, a loop-shaped groove is formed around the carrier bonding zone or the filter bonding zone and is innerly apart from the periphery so that an excessive portion, if any, of the adhesive can flow into the loop-shaped groove.

Abstract: A method and an apparatus for regulating the brightness of a light source (2), configured as an incandescent lamp, in the illumination beam path (8) of a microscope (1), the brightness of the light source (2) being modifiable by increasing or reducing the electrical power delivered to the light source (2), are characterized in that a red shift, associated with the reduction in the delivered electrical power, of the spectrum of the light emitted by the light source (2) in the illumination beam path (8) is compensated for by way of a variable optical filter (16) that brings about a blue shift of the spectrum. A color-neutral regulation of the brightness of the illuminating light is thereby achieved.

Abstract: By preparing a color filter including blue dots whose chromaticity coordinates (z, Z) in the XYZ colorimetric system, measured with CIE standard light source C, satisfy the relational expressions 114>Z>−1087023z4+3205105z3−3545958z2+1744329z−321773 and 0.73≦z≦0.81, a color filter exhibiting an excellent color reproducibility and a high transmittance can be realized and thus a liquid crystal display device capable of displaying as colorful images as in CRT television sets can be achieved.