Abstract: A laser projector includes a laser assembly, a beam combination mirror group and a phase delaying component. The laser assembly includes a red laser light emitting region, a blue laser light emitting region and a green laser light emitting region. Red laser light is polarized in a first direction, green laser light is polarized in a second direction, and blue laser light is polarized in a third direction. The beam combination mirror group combines the red laser light, the blue laser light and the green laser light. The phase delaying component is on a light emitting path of at least one of the red laser light, the blue laser light the green laser light, and changes a polarization direction of the at least one of the red laser light, the blue laser light or the green laser light before being output by the beam combination mirror group.

Abstract: A phosphor wheel includes a substrate including a first principal surface and a second principal surface located opposite to each other, a phosphor layer on the first principal surface, and a heat dissipating member disposed so as to oppose one of the first principal surface and the second principal surface. The heat dissipating member includes a projecting portion that projects from a center portion of the heat dissipating member, and the projecting portion includes a contact surface that contacts the one of the first principle surface and the second principle surface. The heat dissipating member further includes fins formed in a peripheral region of the heat dissipating member excluding the center portion. The projecting portion secures a certain distance between the substrate and the heat dissipating member and conducts heat in the substrate to the peripheral region of the heat dissipating member.

Abstract: A color wheel module and a projector are provided. The projector includes the color wheel module, and the color wheel module includes a disk, an isolation framework, an assembly member, and a colloidal filler. The disk is configured to rotate around an axis. The isolation framework and the assembly member are disposed on the disk. The isolation framework is located between the disk and the assembly member. An air layer is formed between the disk, the assembly member and the isolation framework. The colloidal filler is disposed on the assembly member.

Abstract: Described examples include a display having a first light source configured to provide a first light and a second light source configured to provide a second light. The display also having a spatial light modulator configured to produce a first modulated light by modulating the first light and configured to produce a second modulated light by modulating the second light. The display also having a first diffractive optical element configured to receive the first modulated light and configured to provide a first image having a first characteristic to display optics; and a second diffractive optical element configured to receive the second modulated light and configured to provide a second image having a second characteristic to the display optics.

Abstract: A light source unit includes a first light source for first light, a second light source for second light differing from the first light, a display device for performing a gradation control on the first light and the second light which are emitted in a time dividing fashion in corresponding gradation control periods to thereby form image light, and a processor configured to control a first dimming mode for adjusting a quantity of light of the first light source in the gradation control periods of the first light and the second light and a second dimming mode for adjusting the quantity of light of the first light source by performing a turn-off control in at least a partial period of the gradation control period of the first light and adjusting the quantity of light of the first light source in the gradation control period of the second light.

Abstract: 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

Abstract: A hybrid projector architecture combines steered light with unsteered light. In some embodiments the steered light is narrowband light and the unsteered light is broadband light. Splitting between the steered and unsteered light may be determined based on luminance level. For example, the unsteered light may contribute a large proportion of the light for luminance levels up to a threshold. The steered light may contribute an increasing proportion of the light as luminance values rise above the threshold.

Abstract: A light source device according to the present disclosure includes a light source section, a first polarization split element for transmitting first light with a first polarization direction from the light source section and reflecting the first light with a second polarization direction, a first retardation element, a second polarization split element for reflecting the first light in the second polarization direction from the first retardation element, a second retardation element, and a light conversion device having a diffusion element for diffusing the first light from the second retardation element, a first wavelength conversion element for performing wavelength conversion on the first light to emit second light, and a substrate.

Abstract: A wavelength conversion element includes a base plate and a rotating device. The base plate has a first surface and a second surface. The first surface is configured to allow a fluorescent layer to dispose on. The base plate includes some first grooves and some second grooves. The first grooves are disposed on the first surface around a center of the base plate. The second grooves are disposed on the second surface around the center. The first grooves and the second grooves are staggered from each other along a rotating direction. The base plate has some through holes. Each of the through holes communicates with the second surface and the corresponding first groove. The rotating device is connected with the base plate and configured to drive the base plate to rotate about an axis along the rotating direction. The axis passes through the center.

Abstract: A light source device comprising: a light source section which generates any one of blue light, red light, and green light; a phosphor which generates a fluorescence including the two colors other than the color of the light emitted from the light source section; a color-changing section which changes one of the two colors of the fluorescence emitted from the phosphor to another color regularly and irradiates it to the image-forming element; and a light path-switching section which switches a light path in which a fluorescence excited by the color light emitted from the light source section passes towards the color-changing section and a light path in which the color light emitted from the light source section passes towards the image-forming element regularly.

Abstract: A phosphor wheel (300, 400, 500, 600) includes an annular disc (310, 410, 510, 610) having phosphor segments (320, 420, 522, 524, 620) and an exposed annular sector (305, 405, 505, 605), a hub (330, 430, 530, 630) coupled to the inner perimeter (304, 413) of the annular disc, and a balancing piece (340, 440, 540, 640) located between the hub and the exposed annular sector. The balancing piece minimizes the initial imbalance of the phosphor wheel about the center (301, 441, 541) of the disc due to the exposed annular sector by making up the difference in torque. A method for making a phosphor wheel, a projector comprising a phosphor wheel, and a method for minimizing imbalance in a phosphor wheel.

Abstract: A filtering circuit for filtering a pulse width modulated (PWM) signal includes a D flip-flop having an input terminal configured to be coupled to a logic high signal and having an output terminal coupled to an output terminal of the filtering circuit; and a circuit coupled between an input terminal of the filtering circuit and the D flip-flop, the circuit configured to, for a first pulse of the PWM signal having a duty cycle within a pre-determined range: generate a positive pulse at a clock terminal of the D flip-flop as a clock signal of the D flip-flop; and generate a negative pulse at a reset terminal of the D flip-flop as a reset signal of the D flip-flop, wherein a duration between a rising edge of the positive pulse and a falling edge of the negative pulse is equal to a duration of the first pulse of the PWM signal.

Abstract: An optical combiner lens includes a lens and a lightguide with a gap defined between the lens and the lightguide. Spacers are disposed in the gap to maintain the gap at a set height. A method of making the optical combiner lens and a wearable heads-up display including the optical combiner lens are disclosed.

Abstract: A projector is provided which includes a first light source device configured to emit light in a first wavelength range, a first wheel having formed thereon a plurality of light source segments configured to emit lights in different wavelength ranges upon receiving light in the first wavelength range, a second wheel having formed thereon a plurality of areas configured to dim light emitted from the first wheel, a display device onto which light emitted from the second wheel is shined to thereby form image light, and a processor configured to control the first light source device, the first wheel and the second wheel in a synchronized fashion, wherein the processor performs a masking process on the image light when either or both of a rotation frequency difference and a phase shift between the first and the second wheels are predetermined thresholds or greater.

Abstract: A light source apparatus according to an embodiment of the present technology includes a wheel, a rotation drive unit, and a first adhesive material. The wheel includes a light-emitting body that emits visible light by being excited. The rotation drive unit includes a support surface including a reference surface that comes into contact with the wheel and a non-contact surface that is set apart from the wheel, and causes the wheel supported by the support surface to rotate. The first adhesive material is filled in at least a part of a gap between the non-contact surface and the wheel.

Abstract: A light conversion device according to one embodiment of the disclosure includes a light conversion section that is rotatable about an axis of rotation, a cooling section that cools the light conversion section, a housing that houses the light conversion section and the cooling section, and a partition member that is provided on the light conversion section, and partitions a space in the housing.

Abstract: A light source device includes: a light emission element; a condensing optical system on which a first component of light emitted from the light emission element is incident; an optical element on which the first component transmitted through the condensing optical system is incident; and a pickup optical system on which the first component having travelled via the optical element is incident. At least one of the condensing optical system and the pickup optical system includes a first lens formed of quartz.

Abstract: A phosphor device of an illumination system emitting a first waveband light includes a substrate and a phosphor layer formed on the substrate. The phosphor layer includes a first phosphor agent and a second phosphor agent. The first waveband light is converted into a first color light by the first phosphor agent. The second phosphor agent is distributed over the first phosphor agent and mixed with the first phosphor agent, and the first waveband light is converted into a second color light by the second phosphor agent. The first color light and the second color light are integrated into the second waveband light. The difference between the first wavelength peak of the first color light and the second wavelength peak of the second color light is 50 to 100 nanometers. Therefore, the advantages of increasing the purity, the luminance and the luminous intensity of specific color light are achieved.

Abstract: A phosphor device of an illumination system emitting a first waveband light includes a substrate and a phosphor layer formed on the substrate. The phosphor layer includes a first phosphor agent and a second phosphor agent. The first waveband light is converted into a first color light by the first phosphor agent. The second phosphor agent is distributed over the first phosphor agent and mixed with the first phosphor agent, and the first waveband light is converted into a second color light by the second phosphor agent. The first color light and the second color light are integrated into the second waveband light. The difference between the first wavelength peak of the first color light and the second wavelength peak of the second color light is 50 to 100 nanometers. Therefore, the advantages of increasing the purity, the luminance and the luminous intensity of specific color light are achieved.

Abstract: A display device includes: pixels arranged in a row direction and in a column direction in a display area, each pixel including a memory block including memories; memory selection line groups each including memory selection lines electrically coupled to the memory block of each of the pixels belonging to a corresponding row; a memory selection circuit that simultaneously outputs a memory selection signal to the memory selection line groups; light sources; a light source selection circuit that selects which light source is to be used; and a light guide plate that guides the light emitted from selected light source to the display area. One of the memories is selected, and each pixel displays an image based on pixel data being stored in the selected memory. The light source selected by the light source selection circuit emits light over an entire period of time in which the one memory is selected.

Abstract: An optical unit includes a digital micromirror device that drives each micromirror to be ON/OFF controlled, a first prism that guides illumination light to the digital micromirror device, a second prism having an OFF light reflection surface that reflects OFF light reflected on a micromirror in an OFF state and allows transmission of ON light reflected on a micromirror in an ON state, and a third prism that receives the ON light emitted from the second prism to output the ON light to a projection side. The micromirror reflects the OFF light in such a direction that the optical axis of the OFF light is apart from a projection optical axis plane including the optical axis of the ON light and the optical axis of the illumination light. The second prism emits the OFF light through an emission surface intersecting the projection optical axis plane.

Abstract: A color wheel includes a phosphor wheel, a color correction wheel, a rotation shaft, and a metal piece fixed on the rotation shaft, and the phosphor wheel and the color correction wheel are fixed together with the metal piece, such that they both contact the metal piece and heat generated by the phosphor wheel can be quickly transmitted to the metal piece and the color correction wheel and emitted into the air to cool the phosphor wheel.

Abstract: A rotor unit includes a rotor including a substrate and a wavelength conversion region, and a driving unit. The substrate includes an outer edge and is configured such that a substrate material is continuously provided from a center to the outer edge. The wavelength conversion region is provided on the substrate and receives light having a first wavelength region and emits light having a second wavelength region different from the first wavelength region. The driving unit rotates the rotor.

Abstract: A light source module and a projection apparatus are provided. The light source module includes a blue light source, a red light source, a wavelength conversion wheel and a filter wheel. The blue light source provides a blue light beam. The red light source provides a red light beam. The wavelength conversion wheel is disposed on a transmission path of the blue light beam and has a wavelength conversion region and a transparent region. The blue light beam passes through the transparent region. The blue light beam is converted into a green light beam by the wavelength conversion region, so as to generate the green light beam. The filter wheel is disposed on transmission paths of the blue light beam and the red light beam and includes a filter region and a diffusion region. A filter spectrum of the filter region includes a first bandwidth that allows the green light beam to pass through and a second bandwidth that allows a red light beam to pass through.

Abstract: A curved-surface apparatus for wavelength converting. The apparatus includes: a light source excitation unit comprising a plurality of light source exciters for emitting identical or different excited light, respectively; a wavelength conversion unit provided with annular structure; a plurality of component sets circularly disposed on a curved surface of the annular structure and divided into a plurality of component regions provided with predetermined color wavelength conversion substances; a beam splitter set configured to reflect the excited light emitted by the light source excitation unit and transmit predetermined light; a condenser lens set disposed near the wavelength conversion unit.

Abstract: A rotary cooling device includes a rotating device, a base connected to a cooling target and configured to be rotated by the rotating device, and a heat radiating section disposed in the base and configured to radiate heat transmitted from the cooling target via the base. The heat radiating section includes a plurality of fins extending from a rotation center side of the base to an outer circumference side of the base and arrayed along a rotating direction of the base, a plurality of first grooves formed among the plurality of fins and communicating with an outer region of the heat radiating section when viewed along a rotation axis of the base, and a plurality of second grooves crossing at least one of the plurality of first grooves to divide the plurality of fins into a plurality of fin elements.

Abstract: A phosphor wheel module includes a substrate and a phosphor region disposed on a surface of the substrate. The phosphor region includes a phosphor that is disposed on at least a part of a circumference of a circle with a first radius from a rotation center of the substrate. The substrate includes a ventilation region and a heat conduction region. The ventilation region includes a plurality of openings that is located closer to the rotation center of the substrate than the phosphor region. The heat conduction region is located farther away from the rotation center of the substrate than the phosphor region.

Abstract: The examples relate to various implementations of a software configurable lighting device, installed as a panel, that offers the capability to appear like and emulate a variety of different lighting devices. Emulation includes the appearance of the lighting device as installed in the wall or ceiling, possibly, both when lighting and when not lighting, as well as light output distribution, e.g. direction and/or beam shape.

Abstract: An embodiments of the present disclosure relate to a fluorescence wheel, a projection light source, a projector and its control method. The fluorescent wheel includes a substrate having a reflecting surface; and a fluorescent layer disposed on the reflecting surface of the substrate. The fluorescent layer includes a high color gamut region and a low color gamut region.

Abstract: A phosphor device of an illumination system emitting a first waveband light and having an optical path includes a first section and a first phosphor agent. The first phosphor agent is coated on the first section. The first waveband light is received and converted into a second waveband light by the first phosphor agent. The second waveband light is directed to the optical path. The range of the spectrum of the second waveband light includes at least a first color light and a second color light, so that the first color light or the second color light is separated from the second waveband light along the optical path. Therefore, the diversity of the design of the phosphor device is enhanced, the manufacturing cost and the size of product are reduced, and the color purity is enhanced.

Abstract: An image display device includes: a light source unit that sequentially supplies light of a plurality of colors; an image formation unit that is provided with a pixel region that is made up of a plurality of pixels, light of a plurality of colors supplied by the light source unit sequentially irradiating the pixel region, and images of a plurality of colors being sequentially formed by the modulation of the incident light by each of the pixels; and a controller that controls the image-forming operation of the image formation unit. The controller causes formation of images of at least one color among the plurality of colors with pixel combinations made up of a plurality of pixels as pixel units and individually controls each pixel that make up the pixel combinations.

Abstract: A phosphor device of an illumination system emitting a first waveband light and having an optical path includes a first section and a first phosphor agent. The first phosphor agent is coated on the first section. The first waveband light is received and converted into a second waveband light by the first phosphor agent. The second waveband light is directed to the optical path. The range of the spectrum of the second waveband light includes at least a first color light and a second color light, so that the first color light or the second color light is separated from the second waveband light along the optical path. Therefore, the diversity of the design of the phosphor device is enhanced, the manufacturing cost and the size of product are reduced, and the color purity is enhanced.

Abstract: A wheel assembly includes a housing, a wheel, and a thermal conductive assembly. The wheel is disposed inside of an enclosure of the housing, and includes a first surface, a second surface, and a wavelength conversion layer formed on a coating area of the first surface and configured to convert wavelength of a light beam. The thermal conductive assembly includes a thermal conductive structure and a thermal conductive tube. The thermal conductive structure corresponds to an edge contour of the wheel and is disposed adjacent to an outer edge of the wheel. The thermal conductive tube is coupled to the thermal conductive structure and partially protrudes to an exterior of the housing for conducting heat generated by the wheel from the thermal conductive structure to the exterior of the housing. The distance between the thermal conductive structure and the outer edge of the wheel falls within 1-50 mm.

Abstract: An image may be formed in a projection system by forming a light beam with substantially a first polarization. The light beam is directed onto a first color wheel that transmits a first selected color portion of the light beam and reflects a second color portion of the light beam. The reflected second color portion is converted to a second polarization. A first portion of the image is produced with a first spatial light modulator using the first selected color portion of the light beam having the first polarization. A second portion of the image is produced with a second spatial light modulator using at least a portion of the reflected second color portion of the light beam having the second polarization. The first portion of the image and the second portion of the image are combined to form a combined image for projection.

Abstract: A light source system comprises: a light-emitting device for emitting a first light and a second light in sequence; a beam splitting system with which the first light is divided into one beam in a first range of wavelength and the other beam in a second range of wavelength, respectively emitted along a first optical path and a second optical path, and also with which at least a part of the second light is emitted along the first optical path; a first spatial light modulator for modulating the beam emitted from the beam splitting system along the first optical path; a second spatial light modulator for modulating the beam emitted from the beam splitting system along the second optical path. The light source system has the advantages of high light-emitting efficiency and low cost. A projection system comprising the aforementioned light source system is also provided.

Abstract: A wavelength converter includes a rotating device, a substrate rotated by the rotating device, and a wavelength conversion element and a plurality of fins provided on a first surface of the substrate, and the first surface is so provided as to face an opening of an air introduction channel through which air for cooling the wavelength conversion element is introduced.

Abstract: The invention provides a digital micromirror device control apparatus and a projection display system. The digital micromirror device control apparatus includes a video decoding circuit configured to decode received video data, thereby obtaining component data signals of a plurality of colors; a digital micromirror device driving circuit including a first sub-driving circuit and a second sub-driving circuit. An input end of the first sub-driving circuit is connected to the video decoding circuit, an output end of the first sub-driving circuit is connected to the first digital micromirror device, an input end of the second sub-driving circuit is connected to the video decoding circuit, and an output end of the second sub-driving circuit is connected to a second digital micromirror device. The first sub-driving circuit and the second sub-driving circuit are configured to process component data signals of at least three of the plurality of colors.

Abstract: The phosphor wheel device includes a phosphor wheel, a circulation fan, a motor and a casing unit. The phosphor wheel is disc-shaped, and includes an annular phosphor layer formed on a first face and a plurality of openings disposed on an inner circumferential side. The circulation fan is mounted to a second face opposite to the first face, and blows air through the openings to the phosphor layer side. The motor drives and rotates the phosphor wheel and the circulation fan. The casing unit accommodates the phosphor wheel, the circulation fan, and the motor, and includes a circulation path formed for an airflow generated by the circulation fan to circulate. The casing unit includes an outer cylindrical portion and an inner cylindrical portion disposed substantially concentrically inside the outer cylindrical portion. Both ends of the outer cylindrical portion communicate with both ends of the inner cylindrical portion.

Abstract: A light converter comprises: a solid-state optical member configured to absorb light of an excitation wavelength and generate light of an emission wavelength; a base; and a mechanical fastener attaching the solid-state optical member to the base. The light converter may be part of a light engine, a phosphor wheel or an automotive headlight. A method of manufacturing such a phosphor wheel is also provided.

Abstract: Provided is a projection device, comprising a light-emitting apparatus, a spatial light modulator, a pixel shifting apparatus, a projection lens, and a control processor; the light-emitting apparatus comprises an excitation light source, a colored-light generating apparatus, and a drive apparatus; the control processor is separately connected to the drive apparatus, the light source, the spatial light modulator, and the pixel shifting apparatus, and is used for: controlling the frequency of periodic motion of the drive apparatus; while the drive apparatus moves the conversion area of the colored-light generating apparatus to pass across the position illuminated by the excitation light, shutting off the light source or controlling the spatial light modulator to enter a non-projecting state. No light passes through the pixel shifting apparatus when it is changing states, thus it is prevented from affecting the contrast. Also provided are a projection control system and a projection control method.

Abstract: 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.

Abstract: A cooling structure includes a phosphor unit, air-blowing systems that cause cooling air to flow, and a duct structure. The phosphor unit includes a substrate and a phosphor that is formed on the substrate and that emits fluorescent light when irradiated with excitation light. The duct structure guides the cooling air blown from the air-blowing systems to the phosphor unit.

Abstract: A gas concentration measurement device measures a gas concentration based on an absorbance of sample gas in a region between a light source that emits infrared light and a detector that detects the infrared light. The gas concentration measurement device includes a rotating member, first and second band pass filters on the rotating member, and a rotational driver. The first and second band pass filters are located on a pair of planes that intersect each other. The rotational driver rotates the rotating member around the rotating shaft to switch between a first state, in which the infrared light from the light source is transmitted through the first band pass filter, and a second state, in which the infrared light from the light source is transmitted through the second band pass filter.

Abstract: A light source system comprises: a light-emitting device for emitting a first light and a second light in sequence; a beam splitting system with which the first light is divided into one beam in a first range of wavelength and the other beam in a second range of wavelength, respectively emitted along a first optical path and a second optical path, and also with which at least a part of the second light is emitted along the first optical path; a first spatial light modulator for modulating the beam emitted from the beam splitting system along the first optical path; a second spatial light modulator for modulating the beam emitted from the beam splitting system along the second optical path. The light source system has the advantages of high light-emitting efficiency and low cost. A projection system comprising the aforementioned light source system is also provided.

Abstract: A color wheel device is used in a projector. The color wheel device includes a housing, a color wheel, a motor, and a thermally conductive member. The housing has at least one through hole for a light beam to pass through. The color wheel is disposed in the housing and includes a substrate and a phosphor layer. The substrate has a light-receiving surface. The phosphor layer is disposed on the light-receiving surface. The light beam forms a light spot on the phosphor layer. The motor is disposed in the housing for driving the substrate to rotate. During the rotation of the substrate, the light spot forms a circular path on the phosphor layer. The thermally conductive member is disposed on the housing substantially at a location to which the circular path maps.

Abstract: An image projection apparatus includes: an illumination optical system; a projection optical system assembled integrally with the illumination optical system; and a frame fixed to only one system, that has a larger weight, of the illumination optical system and the projection optical system.

Abstract: Image display apparatus and methods may use a single imaging element such as a digital mirror device (DMD) to spatially modulate plural color channels. A color channel may include a light steering element such as a phase modulator. Steered light from a light steering element may be combined with or replaced by additional light to better display bright images. These technologies may be provided together or applied individually.

Abstract: A color wheel, comprises a hub portion, configured to act as a rotor for coupling to a motor and having a disk-shaped surface; an optically active radial portion, attached to or integrated with the hub portion and configured to optically process incident light; and a balancing adaptation to the disk-shaped surface of the hub portion, comprising one or more of: (a) a recess in the disk-shaped surface extending to an edge of the disk-shaped surface; (b) an annular groove in the disk-shaped surface having a non-uniform width and/or being non-concentric with the disk-shaped surface; (c) an annular groove in the disk-shaped surface, at least a portion of which is filled by a balancing mass part; and (d) a groove and/or a matrix of recesses in the disk-shaped surface arranged to define a portion of an annulus in shape.

Abstract: A projector includes a plurality of light sources; a controller which controls dimming of the plurality of light sources individually; a light modulator which synthesizes light emitted from each of the plurality of light sources to generate synthetic light, and modulates the synthetic light to generate an optical image; and a projecting optical system which projects the optical image generated by the light modulator. The plurality of light sources include a first light source and a second light source, and when the controller causes the plurality of light sources to emit dimmed light, the controller causes the first light source to emit light with supplied power greater than or equal to 50% of rated power and causes the second light source to emit light with supplied power less than 50% of the rated power or turn off.

Abstract: A light source unit emits a plurality of basic light beams of differing colors and a supplemental light beam of the same color as any of the colors of the plurality of basic light beams. A control unit (12), on the basis of an input picture signal that is received as input, supplies a first modulating signal for modulating each basic light beam that accords with the color of each pixel of an image indicated by the input picture signal and a second modulating signal for modulating the supplemental light beam in accordance with the specific color level in each pixel that indicates the degree of similarity between the color of the pixel and, of the colors of the plurality of basic light beams, a prescribed color that differs from the color of the supplemental light beam. Modulation units (108, 109, 110) modulate and emit the basic light beams in accordance with the first modulating signal and modulate and emit the supplemental light beam in accordance with the second modulating signal.