Abstract: In conjunction with attachment or detachment of a dust filter, a lid disposed to an inlet of a duct operates to close the inlet.

Abstract: The present invention provides a projection type display unit including a light source, an optical unit including a light valve and a projection lens, and a cooling section for cooling the light source and the optical unit. The light source and the optical unit as well as the cooling section are incorporated in an armor cabinet. A highly heat conductive sheet metal component part is disposed in a space between a lamp as the light source and the armor cabinet.

Abstract: Described herein are devices that provide projection-type video output in a portable and flexible design. The design includes a projection chamber, a base, and an interface that permits relative positioning between the projection chamber and base. The base maintains the position of the display device. The projection chamber includes components responsible for the production of images based on received video data and components responsible for the projection of those images. Relative pointing between the projection chamber and base allows the projection chamber to be pointed—and an output projected image to be positioned—with minimal effort.

Abstract: LED modules 1R, 1G, 1B for respectively emitting red, green and blue colors of light, illumination optical systems 2R, 2G and 2B for guiding light from the LED modules, and a liquid crystal panel 7 for modulating the light from the LED modules guided by the illumination optical systems on the basis of an image signal are placed. The LED modules are provided with respective cooling units connected to the backside thereof through spreaders 11R, 11G and 11B as thermal conductive members. Only the cooling device for the red LED module 1R is formed by using a red Peltier device 12 as a thermoelectric element capable of controlling heating and absorbing heat. Efficient temperature control by appropriately using a Peltier device for cooling the plurality of solid light sources that emit colors of light different from each other becomes possible, and an increase in the size of the cooling system and power losses can be suppressed.

Abstract: A thermally dissipative housing (200) includes a rigid housing (203) and a compliant heat spreader (215). The compliant heat spreader (215) is thermally coupled to a heat-generating component (201) disposed within the thermally dissipative housing (200). The compliant heat spreader (215) removes heat from the heat-generating component (201) and transfers it along an interior surface of the rigid housing (203) by passing along an interior (209) of the rigid housing (203) across at least a portion of the interior surface area (211) of the rigid housing (203). The compliant heat spreader (215) transfers heat to the surface of the rigid housing (203) without substantially interfering with the shock absorbing properties of the rigid housing (203).

Abstract: A structure for protecting a rod integrator that is used for a projection display apparatus is provided. The structure has: a protecting tube for the rod integrator, the protecting tube accommodating the rod integrator therein, wherein the protecting tube has openings which are defined at positions that face a light incident surface and a light exiting surface of the rod integrator, respectively; and a light shield plate that is provided between the opening and a light source for emitting light to the rod integrator, the opening facing the light incident surface of the rod integrator, wherein the light shield plate has an opening for allowing light to pass therethrough so that the light is incident on the rod integrator.

Abstract: An image projector comprises: a LED light source module, a PCB module, a heat sink module, condensing and projecting lenses, and a housing. The printed circuit board (PCB) module further comprises: internal memory for storing video images to be displayed, at least one I/O interface for connection to a host computer for transferring images by either wired or wireless means, a control unit for transferring, storing, and processing images stored in its memory, firmware allowing for unattended operation by automatically looping through stored content, an electronic image forming device for displaying stored images to be projected. The heat sink module is of the natural convection type and is mounted such that ambient air can flow freely around its heat dissipating fins thereby eliminating the need for a fan. The housing encloses all components such that it is suitable for outdoor use.

Abstract: A light-source module includes a red light source, a blue light source, a green light source, a first heat sink, and a second heat sink. The first heat sink is attached to the green light source for dissipating heat generated from the green light source. The second heat sink is attached to the red light source and the blue light source for dissipating heat generated from the red light source and the blue light source. The first heat sink is separated from the second heat sink.

Abstract: A projector includes at least one light source module, an optical system, an imaging unit, and a projection lens. Each light source module includes a lamp unit and a heat-dissipating module in close contacting with the lamp unit. Each of the at least one light source module is positioned at one end of the optical system. The imaging unit is positioned at the other end of the optical system. The projection lens is positioned at the same end of the optical system with the imaging unit. Each lamp unit can be adjusted along a first direction relative to the heat-dissipating module, each light source module can be adjusted along a second direction relative to the optical system, the first direction and the second direction both perpendicular to the light emitting direction of the corresponding lamp unit.

Abstract: A projection image display apparatus includes: a light source unit configured to be detachably attachable to a main body of the apparatus; a storage unit provided to the light source unit for previously storing therein information that the light source unit is a genuine product; a determination unit verifying the information stored in the storage unit to make a decision on whether the light source unit is the genuine product; and a light source control unit operative in accordance with the decision made by the determination unit to control an output of the light source unit. The determination unit transmits a signal to the storage unit. The storage unit receives and encrypts the signal in accordance with the information and transmits the encrypted signal to the determination unit. The determination unit receives and reconstructs the encrypted signal to verify the information.

Abstract: A light source device includes: an arc tube having a light emission portion; a first reflection mirror having a substantially concave surface for reflecting light emitted from the light emission portion; and a container which accommodates the arc tube and the first reflection mirror, wherein the container has a duct unit disposed above the arc tube. The duct unit includes a first opening open to the arc tube and disposed at a position shifted toward the traveling direction side from an opening end of the first reflection mirror, a wall portion which forms the edge of the first opening on the side opposite to the traveling direction side as a final end of the duct unit, and an inclined portion disposed in the vicinity of the edge of the first opening on the traveling direction side to bend the flowing direction of the cooling air toward the surface opposite to the surface having the first opening.

Abstract: A lens module includes a seat, a lens holder and a thermal dissipation structure. The seat includes a base plate and two sidewalls perpendicularly formed on a surface of the base plate. The lens holder is mounted on the seat between the two sidewalls. The thermal dissipation structure is mounted on the seat and thermally conducts with the lens holder for cooling the lens holder.

Abstract: This projector includes a lamp unit including a lamp which emits light for projecting an image upon a screen. This lamp unit is provided with a projector main body. Moreover, the projector includes a metal plate which is disposed, between a bottom surface of the projector main body and the lamp unit, in a situation of floating away from this bottom surface of the projector main body. The projector also includes a fan which sucks external air into the projector main body. This fan is disposed in an orientation such as to blow this sucked in external air towards the metal plate.

Abstract: An optical engine includes a receiving chamber and three light source modules. Each light source module includes a positioning board, a heat dissipating plate, and a light source unit. The heat dissipating plate is sandwiched between the light source unit and the positioning board and adhered to the corresponding light source unit. The light source unit is installed on the receiving chamber. The positioning board is matched with the light source unit and installed on the receiving chamber.

Abstract: A protector includes a projector body which has an image display unit which displays an image, a member to be projected onto which an image emitted from the image display unit is to be projected, and a connecting part capable of holding the member to be projected and the projector body at a predetermined distance therebetween and capable of accommodating the member to be projected within the projector body. The member to be projected can be unfolded in an in-plane direction.

Abstract: A projection display apparatus of the present invention includes: a lamp power controller 13 changing the value of power supplied to super-high pressure mercury lamp 21; atmospheric pressure sensor 61 detecting the atmospheric pressure around where projection display apparatus 1 is installed; and correlation table storage 53 in which information on power supplied to the light source, set up corresponding to atmospheric pressure is stored. Lamp power controller 13, based on the previously stored information on power supplied to super-high pressure mercury lamp 21, set up corresponding to the atmospheric pressure, controls the power supplied to super-high pressure mercury lamp 21 in accordance with the atmospheric pressure detected by atmospheric pressure sensor 61.

Abstract: An information handling system projector lamp door includes a thermal safety latch that secures the lamp cover panel if the temperature of the projector interior exceeds a safety limit associated with potential harm to an end user. A thermostatic spring expands at a predetermined temperature to interfere with movement of a latch so that the latch is locked to secure the cover panel in a closed position. Below the predetermined temperature, the thermostatic spring retracts to allow movement of the latch so that the cover panel is released to move to an open position. An override interfaces with the thermal safety latch to allow manual release of the cover panel by retracting the thermostatic spring.

Abstract: A projection display device that modulates light on the basis of image information to form an optical image, and that projects the formed optical image, includes: light source devices 10R, 10G and 10B; optical modulation device 50 that modulates lights emitted from light source devices 10R, 10G and 10B; and common metal plate 70 on which light source devices 10R, 10G and 10B and optical modulation device 50 are mounted, light source devices 10R, 10G and 10B and optical modulation device 50 being thermally connected via metal plate 70.

Abstract: A projector includes first, second and third light sources and first, second and third heat dissipation devices attached to and thermally connecting with the light sources for dissipating heat generated thereby. The first heat dissipation device includes a first heat sink located adjacent to a lateral side of the projector from which a lens protrudes, a fin assembly and a bent heat pipe connecting the first heat sink and the fin assembly. The second heat dissipation device includes a base and a plurality of fins located at a rear side of the projector and defining a stepped portion on which the fin assembly of the first heat dissipation device is mounted. The third heat dissipation device includes a base and a plurality of fins and is located adjacent to an opposite lateral side of the projector.

Abstract: A projector includes: a light source unit configured to emit light; a light source heat absorber configured to cause coolant to absorb heat from the light source unit; an ejector pump configured to allow passage of the coolant having absorbed the heat in the light source heat absorber; a radiator configured to radiate the heat of the coolant flowed out from the ejector pump; an evaporator configured to cool the coolant stored in the evaporator by evaporating the coolant; and a heat source other than the light source unit, wherein the ejector pump decompress the interior of the evaporator by a pressure drop due to the passage of the coolant having absorbed the heat in the light source heat absorber, and heat from the heat sources other than the light source unit is absorbed by the coolant cooled by the evaporator.

Abstract: A heat-dissipating structure of a housing is disclosed. The housing defines an opening that is embedded with the heat-dissipating structure. The heat-dissipating structure includes a number of metal slats, a number of connection members, and a supporting frame. The metal slats are spaced and angled to form air channels and fixed to each other via the connection members. The combination of the metal slats and connection members are supported by the supporting frame.

Abstract: A projector module adopts a structure having an optical image forming block and an optical block integrated via a locking member. The optical image forming block adopts a structure achieved by disposing an aluminum substrate at which an LED is mounted and a liquid crystal panel in a casing constituted with a plastic material having low thermal conductivity. The locking member is formed by bending a metal sheet through a sheet metal bending process and the locking member is set in surface contact with the substrate. The optical block adopts a structure achieved by disposing a PBS and a reflecting member at the casing constituted with a plastic material having low thermal conductivity with a quarter-wave plate disposed at the boundary of the two members.

Abstract: A light source module includes a lamp assembly, at least one temperature sensor for monitoring a temperature of the lamp assembly, and a processor coupled to the temperature sensor and the lamp assembly, the processor being configured to operate the lamp assembly at a reduced power level when the temperature is above a first temperature threshold.

Abstract: A light-source unit includes: a discharge lamp (3) that has a discharge space (13) containing mercury as a filling; and a housing (5), where the discharge lamp (3) is provided inside the housing (5). The housing (5) includes a reflecting member (7) and a lens member (9). The housing (5) includes a cutting (7e) and a through hole (43a) which enable the inside and outside of the housing (5) to communicate with each other. A cutting absorber (45a) is attached to the cutting (7e), and a through hole absorber (45b) is attached to the through hole (43a). The cutting absorber (45a) and the through hole absorber (45b) contain activated charcoal that absorbs mercury.

Abstract: A terminal includes a display, a body comprising a front side, a rear side, a left side, and a right side, wherein the body is sized to receive the display, the display being positioned to be viewable from the front side of the body, and a projector mounting portion located at an end of the body, the projector mounting portion comprising a front side, a rear side, a left side, and a right side. The terminal also includes a housing sized to slidably receive the projector mounting portion, wherein the housing is positionable between open and closed positions by providing relative linear motion between the housing and the body, wherein the open position relates to increasing the relative distance between the housing and the display, and the closed position relates to decreasing the relative distance between the housing and the display.

Abstract: A lighting unit is described which has a discharge lamp (1), in particular a high pressure or high intensity discharge (HID) lamp or an ultra high performance (UHP) lamp, a lamp driver (2) and a cooling device (3). To reduce mechanical stresses caused by temperature variations in the lamp (1), one or more operating parameters of the lamp (1) are detected. In addition, a control unit is provided for controlling the lamp driver (2) and/or the cooling device (3) at least during switching on and/or off of the lighting unit in such a way that there is no excursion from a predetermined range of the at least one operating parameter. By selecting the parameter range suitably, the service life of the lamp may be extended considerably or the power of the lamp may be increased while the service life remains the same.

Abstract: A light assembly includes a heat-dissipating device, a light-emitting device, and a reflector. The heat-dissipating device defines an accommodating space. The light-emitting device is disposed in the accommodating space. The reflector serves to reflect light emitted by the light-emitting device, extends into the accommodating space, and surrounds the light-emitting device.

Abstract: A cooling system of a thin projector, and a method for controlling the same are disclosed. The system comprises a heat source 1 in a housing, first and second suction ports formed at side and lower surfaces of the housing, respectively, a discharge port formed at an upper surface of the housing, first and second air stream forming units 2 and 3 to form first and second air stream along which air induced from the first and second suction ports is guided to the discharge port while cooling the heat source, respectively, a sensor unit to detect a temperature of suction air induced from the first and second suction ports and a temperature of discharge air discharged from the discharge port, and a controller 6 to control the first and second air stream forming units 2 and 3 using the temperatures of the suction and discharge air.

Abstract: A heat-dissipating device used in a projection display apparatus with an air outlet includes a fence module, at least one resilient member, and a shape memory alloy module. The fence module is disposed at the air outlet and includes at least one guiding plate with a pivot. The resilient member exerts a first force on the guiding plate to enable the guiding plate to rotate on the pivot, and the shape memory alloy module deforms when heated to exert a second force on the guiding plate to enable the guiding plate to rotate on the pivot.

Abstract: A projection image display apparatus including a detachably attachable light source unit includes: a storage means provided to the light source unit and having previously stored therein information that the light source unit is a genuine product; a determination means making a comparison with the information in the storage means to determine whether the light source unit is the genuine product; and a light source control means controlling an output of the light source unit in accordance with a result from the determination means.

Abstract: A portable electronic device with micro-projecting module includes a shell body, a micro-projecting module, a heat-conducting plate and a supporting stand. The shell body has a front lateral plate and a bottom lateral plate adjoining the front lateral plate. The front lateral plate has a front through hole, while the bottom lateral plate has a bottom through hole. The micro-projecting module is arranged in the shell body and has a lens exposing to an outside of the shell body from the front through hole. The heat-conducting plate is arranged in the shell body and is positioned between the micro-projecting module and the bottom through hole. In the meantime, the heat-conducting plate has a heat-absorbing face contacting the micro-projecting module and a heat-dissipating face abutted against the bottom through hole.

Abstract: According to the invention, there is provided a projector having a light source unit 63, a light source side optical system which includes a color wheel and a light guiding unit, a display device, a projection side optical system and a cooling fan and comprising a projector control unit, wherein an interior of a projector casing is divided into an outlet side spatial compartment 122 which is positioned on an outlet side of the cooling fan and in which the light source unit 63 is disposed and an inlet side spatial compartment which is positioned on an inlet side of the cooling fan. In addition, this outlet side spatial compartment 122 is covered thereabove by an upper division board 125 above which a heat conductive sheet 128 which is formed of an aluminum sheet is disposed. Further, this heat conductive sheet 128 is electrically connected to the projector casing, so that electricity charged in the heat conductive sheet 128 can be discharged.

Abstract: A cooling apparatus and a method for controlling the same are disclosed. The cooling apparatus is adapted to cool a system in which a heat source generating heat is arranged. The cooling apparatus includes an air stream forming unit which cools the heat source to a certain temperature, a sensing unit which includes a supplied-air temperature sensor for sensing a temperature of air supplied into the system, and a discharged-air temperature sensor for sensing a temperature of air discharged out of the system, an altitude detecting unit which detects an altitude of the system, based on the sensed supplied-air temperature and the sensed discharged-air temperature, and a cooling controller which controls the air stream forming unit, based on the detected altitude.

Abstract: A projector includes an image projection device, an exterior chassis accommodating the substantially L-shaped image projection device, and a ventilation device configured to block leakage light and to insulate sound of the projector and to discharge air inside the exterior chassis to the outside through an air outlet formed on an end face located in a direction of projection. The image projection device includes a light source device, an optical modulation device, and a projection optical device. The ventilation device includes an axial fan with a suction port and a discharge port. An air outlet duct bends air discharged from the discharge port at an angle of substantially ninety degrees by a vertical wall substantially perpendicular to the discharging direction of air from the discharge port of the axial fan towards a side receding from the projection optical device to lead to the air outlet of the exterior chassis.

Abstract: A projection display capable of preventing a reflector from damage and cooling a lamp at high efficiency. The projection display includes a light source which has a lamp and metallic reflector. The metallic reflector has an opening disposed above the light-emitting point of the lamp in the gravity direction. A duct has an end coupled to the opening and directs the air induced by a fan through the opening into the metallic reflector. The air then circulates within the metallic reflector to cool the light-emitting point of the lamp, and subsequently is released out of the metallic reflector through through-holes formed with a front glass and a flange of the metallic reflector.

Abstract: A projector module adopts a structure having an optical image forming block and an optical block integrated via a locking member. The optical image forming block adopts a structure achieved by disposing an aluminum substrate at which an LED is mounted and a liquid crystal panel in a casing constituted with a plastic material having low thermal conductivity. The locking member is formed by bending a metal sheet through a sheet metal bending process and the locking member is set in surface contact with the substrate. The optical block adopts a structure achieved by disposing a PBS and a reflecting member at the casing constituted with a plastic material having low thermal conductivity with a quarter-wave plate disposed at the boundary of the two members.

Abstract: A light source lamp cooling apparatus according to the present invention includes: diaphragm air compressor (31); an ejector which ejects cooling air directly onto a portion to be cooled of a light source lamp in lamp unit (10); pressure detector (43) which detects pressure of the cooling air by means of pressure sensor (42) inserted in piping; air piping which connects air compressor (31) and the ejector; and a lamp controller which controls turning off of the light source lamp according to the air pressure detected by pressure detector (43). Air compressor (31) is driven at a high control frequency and a hollow, flexible silicon tube is used as air piping to reduce pulsation of air.

Abstract: A liquid crystal projector device of the present invention includes a casing having disposed therein a lamp unit, an optical system for receiving light from the lamp unit to generate image light, and a power unit. An exhaust system for cooling an inside of the casing is attached to a side surface of the casing. The exhaust system includes a first exhaust fan and a second exhaust fan, which stand along the side surface of the casing. The first exhaust fan is placed toward the lamp unit, while the second exhaust fan is placed toward the power unit. Exhaust directions of both exhaust fans intersect each other.

Abstract: Systems and methods for a cooling system of a display device are provided herein. One exemplary image display device includes a light source and an image-generation device for receiving light from the light source and generating an image. The image display device also includes a projection lens for projecting the image from the image-generation device. The image display device also includes a body for housing the light source, the image generation device, and the projection lens. The image display device also includes a cooling system coupled to the body. The cooling system may be positionable in a first position and a second position based on a configuration of the body.

Abstract: A cooling apparatus able to rotate cooling fans with required lowest limit speeds, and able to suppress power consumption and generated noise includes a cooling unit for cooling an object to be cooled by a cooling amount in accordance with a level of a supplied drive signal; a temperature detector for detecting the temperature of the object; a drive circuit for amplifying the drive signal and supplying an output signal to the cooling unit; a memory for storing correction data for correcting circuit error in the drive circuit; and a control unit for generating the drive signal based on the detected temperature of the object, correcting error in the output signal of the drive circuit based on the correction data stored in the memory, and outputting the generated drive signal to the drive circuit. The cooling apparatus may be used in a projection type display device.

Abstract: A method of manufacturing a cooling unit having a cooling plate in which a cooling fluid is allowed to flow, the cooling plate has a structure that a pair of plate members are oppositely arranged sandwiching a cooling tube the cooling fluid is to flow is disclosed. The method includes: forming a groove for receiving the cooling tube, in at least one pair of plate members; and joining each of the one pair of plate members and the cooling tube together by receiving the cooling tube in the groove; wherein, in joining, an external force is applied to at least one of the one pair of plate members whereby deformation is caused in an adjacent point to the groove thereby engaging the adjacent point with the cooling tube.

Abstract: A detection device is mounted in a projector for detecting relations between an object and the projector. The detection device includes a detecting switch, a connector and a detecting circuit. When the object is placed into the detecting switch, the detecting switch is in an off state. When the object is withdrawn from the detecting switch, the detecting switch is in an on state. The connector is electrically connected to the detecting switch. The detecting circuit is electrically connected to the connector for activating the projector to be operated in a first mode in response to the off state of the detecting switch and activating the projector to be operated in a second mode in response to the on state of the detecting switch. The first mode and the second mode are associated with the temperature inside the projector.

Abstract: An optical engine includes a light source system for providing an incident light beam, a reflective light valve, a first case, a projection lens and a second case. The reflective light valve is disposed in the first case for receiving the incident light beam, reflecting and outputting an image light beam or a dumped light beam. The first case provides a first opening located in the light path of the dumped light beam. The projection lens is connected to the first case for receiving and projecting the image light beam to form an image. The second case intercommunicates with the first case via the first opening. The dumped light beam enters the second case through the first opening, and is reflected twice or more inside the second case. Moreover, the inner wall of the second case applies to absorb the energy of the dumped light beam.

Abstract: A method for determining whether to activate an illumination source includes directing an air current across at least a portion of the illumination source and across at least a portion of a temperature sensor. The method also includes sensing the temperature of the air current with the temperature sensor and determining whether to activate the illumination source based on the temperature of the air current.

Abstract: A display apparatus includes a display that displays individual images in a plurality of viewing directions on a common screen, a main body having a different chassis from that of the display, a display fan that cools down inside of the display, and a main body fan that cools down the inside of the main body.

Abstract: An optical device includes a plurality of light modulators that modulate a plurality of color light components according to image information about each color light component and a combining optical unit that combines modulated color light components involving corresponding images for color light components irradiated out of the light modulators and irradiates combined-modulated light components outside through the irradiating surface. The light modulators face each other through incident surfaces which the modulated color light components pass through, other than the irradiating surface of the combining optical unit having an upside and bottom and a plurality of sides, and parts of the light modulators are supported by supporting substrates of a plate that are mounted at the upside and bottom.

Abstract: A liquid crystal projector provided with a cooling fan comprises a temperature sensor for detecting the internal temperature of the liquid crystal projector, an air pressure sensor for detecting outside air pressure, and a control device for controlling the number of revolutions of the cooling fan on the basis of the temperature detected by the temperature sensor and the outside air pressure detected by the air pressure sensor.

Abstract: A projector includes a projection light source, a light-off detector that detects that the projection light source is shut off, and a relighting controller that is triggered to carry out a relighting process for relighting the projection light source based on the detection performed by the light-off detector.

Abstract: A projection apparatus comprises a light emitting device (LED) and a cooling arrangement is described herein.

Abstract: A projector includes a housing, an optical unit, and a heat transfer module. The housing is made of a material with high thermal conductivity having a window. The optical unit is accommodated in the housing and further includes a light source, a panel, and a projection lens. The light source provides a light. The panel modulates the light. The projection lens projects the modulated light to leave the window. The heat transfer module is accommodated in the housing and connected the optical unit and the housing to transfer heat from the optical unit to the housing. Particularly, the projector is a cooling-fan saved projector. In addition, the projector further comprises a computer card adapter and a computer card inserted into the computer card adapter.