Abstract: A multi-functional device comprising an image forming apparatus to form a printing image and a scanner module to scan an image in a first scanning direction. The scanner module includes an illuminator to illuminate a light to a document mount, a sensor unit to read an image information of an object placed on the document mount, and an imaging lens which is disposed between the document mount and the sensor unit and focuses the light reflected from the object onto the sensor unit. The illuminator includes a light source to emit light, a light guiding unit which is lengthened in a second scanning direction, faces the document mount and changes a traveling path of the light emitted from the light source to illuminate the document mount, and a guide holder which comprises an installation part where the light guiding unit is installed, and a mounting part where the light source holder is mounted to provide the light source at least one side of the light guiding unit.

Abstract: A light source device includes a light emitting tube having a light emitting section that emits light, a first sealing section on one side of the light emitting section formed integrally with the light emitting section, and a second sealing section on the other side of the light emitting section formed integrally with the light emitting section. A secondary reflecting mirror having a secondary reflecting surface covers part of a periphery of the light emitting section and reflects light emitted from the light emitting section. A primary reflecting mirror having a primary reflecting surface reflects the light emitted from the light emitting section and the light reflected by the secondary reflecting mirror. The secondary reflecting mirror has a first reference plane defined by a first boundary line as a boundary between the light emitting section and the first sealing section, which does not intersect with the secondary reflecting surface.

Abstract: A projector includes: spatial light modulation devices; and a cooling duct configured to flow a cooling air for sequentially cooling the spatial light modulation devices, the cooling duct has a first flow path formed by portions including the light entrance surface of at least one of the spatial light modulation devices for the respective color lights, a second flow path formed by portions including the light exit surface of the corresponding spatial light modulation device, and a junction area where the cooling air flowing through the first flow path and the cooling air flowing through the second flow path join each other, and the junction area is disposed at a downstream position of the cooling air with respect to the spatial light modulation device provided for a predetermined color light whose light amount is the maximum in the respective color lights that enter the light entrance surface.

Abstract: A projector includes: an optical system includes a light source, a light modulation element for modulating light emitted from the light source to form an optical image, and a projection lens for projecting the optical image, the optical system is structured such that an illumination optical axis of the light source and a projection optical axis of the projection lens cross each other substantially at right angles in the plan view; and a cooling fan configured to the light modulation element, and has a rotation axis crossing each other substantially at right angles with a discharge direction where a cooling air is discharged, the cooling fan is disposed in the vicinity of the projection lens and on the side where the light source is provided such that the rotation axis extends in the thickness direction of the projector.

Abstract: An image reading apparatus includes an image sensor fixed to a main body of the image reading apparatus, a light scanning carriage, a light reflection carriage, a pair of transport modules to move the light scanning carriage and the light reflection carriage in a sub-scanning direction with a predetermined speed ratio, and a wire having both ends fixed to the main body of the image reading apparatus and a portion fixed to the light scanning carriage, the wire wound around carriage pulleys of the light reflection carriage and fixing pulleys of the main body. Therefore, an accuracy of a moving of the carriages is improved, thus preventing a defective reading operation. Manufacturing costs of the image reading apparatus are reduced.

Abstract: An optical device includes: a light modulation unit configured to modulate a light according to image information, including an element substrate having a pixel electrode and a switching element connected with the pixel electrode, and an opposed substrate disposed opposed to the element substrate; a frame configured to hold the light modulation unit; and an incident side dustproof glass disposed in close contact with a light incident side end surface of the opposed substrate, the incident side dustproof glass having the plane size larger than the plane size of the opposed substrate is disposed on the light incident side of the frame.

Abstract: A light source unit includes: an arc tube having a light-emitting portion; a secondary reflector covering part of the periphery of the light-emitting portion and being provided with a secondary reflecting surface for reflecting light emitted from the light-emitting portion; a primary reflector having a primary reflecting surface for reflecting the light emitted from the light-emitting portion and the light reflected from the secondary reflector; a first electrode; and a second electrode; wherein the second electrode is arranged at a position which causes an ionic wind to be induced by applying a voltage between the second electrode and the first electrode and causes air between the secondary reflecting surface and the light-emitting portion to flow, and either one of the first electrode or the second electrode is arranged between the arc tube and the secondary reflector.

Abstract: A light source device includes a light emitting tube having a light emitting section that emits light, a first sealing section on one side of the light emitting section formed integrally with the light emitting section, and a second sealing section on the other side of the light emitting section formed integrally with the light emitting section. A secondary reflecting mirror having a secondary reflecting surface covers part of a periphery of the light emitting section and reflects light emitted from the light emitting section. A primary reflecting mirror having a primary reflecting surface reflects the light emitted from the light emitting section and the light reflected by the secondary reflecting mirror.

Abstract: A light source device includes: an arc tube having a light emitting portion that emits light; a sub-reflection mirror that covers a part of the periphery of the light emitting portion and reflects the light emitted from the light emitting portion; a main reflection mirror that reflects the light emitted from the light emitting portion and the light reflected by the sub-reflection mirror; and a base that is formed separately from the main reflection mirror and to which the main reflection mirror is secured, wherein an arc tube securing portion for positioning and securing the arc tube is formed in the base.

Abstract: A multi-functional device comprising an image forming apparatus to form a printing image and a scanner module to scan an image in a main scanning direction. The scanner module includes an illuminator to illuminate a light to a document mount, a sensor unit to read an image information of an object placed on the document mount, and an imaging lens which is disposed between the document mount and the sensor unit and focuses the light reflected from the object onto the sensor unit. The illuminator includes a light source to emit light, a light guiding unit which is lengthened in a sub-scanning direction, faces the document mount and changes a traveling path of the light emitted from the light source to illuminate the document mount, and a guide holder which comprises an installation part where the light guiding unit is installed, and a mounting part where the light source holder is mounted to provide the light source at least one side of the light guiding unit.

Abstract: An image reading apparatus includes an image sensor fixed to a main body of the image reading apparatus, a light scanning carriage, a light reflection carriage, a pair of transport modules to move the light scanning carriage and the light reflection carriage in a sub-scanning direction with a predetermined speed ratio, and a wire having both ends fixed to the main body of the image reading apparatus and a portion fixed to the light scanning carriage, the wire wound around carriage pulleys of the light reflection carriage and fixing pulleys of the main body. Therefore, an accuracy of a moving of the carriages is improved, thus preventing a defective reading operation. Manufacturing costs of the image reading apparatus are reduced.

Abstract: A scanning unit includes first and second carriages, a first wire to make a closed loop supported by a plurality of first pulleys and connected to the first carriage to move the first carriage, a second wire to make an open loop supported by a plurality of second pulleys installed in the second carriage and connected to the first carriage, and a motor to drive the first wire.

Abstract: An image forming apparatus having a scanning apparatus which is adjustable to fit a focal length of a lens according to the scanning apparatus and an image forming apparatus comprising the same. The scanning apparatus comprising a stage glass to seat a paper on an upper surface thereof; a sensor unit pressed and supported toward a planar surface of the stage glass, and comprising a slide way inclined toward the stage glass at a predetermined angle; a slide member supported by the slide way of the sensor unit and provided with an upper end thereof, to contact the stage glass; and a fixing means to fix the slide member to the slide way.

Abstract: A reduction optical system including a lens 12 and a mirror 13, a CCD image sensor 11 and a frame including a frame member 4 for accommodating the reduction optical system and the CCD image sensor are integrated to constitute an image reading unit 2, and the unit 2 is covered with a cover member 1. A lamp 3 is provided on the cover member 1 and spatially isolated from the inner space of the unit 2. A slit 16 of the cover member 1 is closed by a transparent member 10. The lamp 3 emits the light 15a onto a document 17 on a document setting glass 18, and the reflected light 15b from the document 17 enters the CCD image sensor 11 through the transparent member 10, slit 16, slit 4?, mirror 13 and the lens 12 and is converted into electrical information, thereby reading image information of the document 17.

Abstract: In a wire-driving system that drives and moves a movable unit along a guide path, a drive drum member is rotatably provided on the movable unit to be rotated around an axis which is perpendicular to a movement direction of the movable unit. An electric drive motor is provided in the movable unit and operationally connected to the drum member to be rotationally driven in either a first rotational direction or a second rotational direction. A wire cable has a first end and a second end, and is partially wound around the drum member such that a first cable section and a second cable section are extended from the drum member. The respective first and second ends of the wire cable are securely attached to two fixed points beside terminal ends of the guide path such that the first and second cable sections of the wire cable are tensionally extended along the guide path.

Abstract: In a wire-driving system that drives and moves a movable unit along a guide path, a drive drum member is rotatably provided on the movable unit to be rotated around an axis which is perpendicular to a movement direction of the movable unit. An electric drive motor is provided in the movable unit and operationally connected to the drum member to be rotationally driven in either a first rotational direction or a second rotational direction. A wire cable has a first end and a second end, and is partially wound around the drum member such that a first cable section and a second cable section are extended from the drum member. The respective first and second ends of the wire cable are securely attached to two fixed points beside terminal ends of the guide path such that the first and second cable sections of the wire cable are tensionally extended along the guide path.

Abstract: A reduction optical system including a lens 12 and a mirror 13, a CCD image sensor 11 and a frame including a frame member 4 for accommodating the reduction optical system and the CCD image sensor are integrated to constitute an image reading unit 2, and the unit 2 is covered with a cover member 1. A lamp 3 is provided on the cover member 1 and spatially isolated from the inner space of the unit 2. A slit 16 of the cover member 1 is closed by a transparent member 10. The lamp 3 emits the light 15a onto a document 17 on a document setting glass 18, and the reflected light 15b from the document 17 enters the CCD image sensor 11 through the transparent member 10, slit 16, slit 4′, mirror 13 and the lens 12 and is converted into electrical information, thereby reading image information of the document 17.