Seiko Epson Corporation

Shohei Fujisawa

Takeshi Takezawa

Hiroyuki Kobayashi

Toru Terashima

Hidetoshi Hashizume

Kazuhiro Tanaka

Masashi Kitabayashi

Kazuyuki Iinuma

Yuji Takado

Hideo Yamaguchi

Shunji Umemura

Hirotatsu Okubo

Tomonobu Machida

Shuji Narimatsu

Tomiyoshi Ushiyama

Nobuo Watanabe

Kazuto Shinohara

Taisuke Uehara

Yoshiji Iwadare

Toshihiro Hieda

An optical device includes: a housing; and a reflection member disposed at a predetermined position within the housing, the housing includes a receiving opening through which the reflection member is inserted to be accommodated in the housing, and an attachment unit to which the reflection member is attached, the reflection member includes a front portion which has a reflection area for reflecting supplied light, a back portion positioned on the side opposite to the front portion, and a fixing unit positioned within the surface of the back portion and fixed to the attachment unit, and the fixing unit has an opening into which a position control jig inserted in an attachment direction of attaching the reflection member to the attachment unit through the receiving opening is inserted.

Optical device having reflecting member attached to housing and projector having optical device

A light source unit comprising an arc tubehaving a light emitting sectionsealed sections, an oval reflector, and a secondary reflecting mirrorfor covering the front side of the arc tubeand reflecting a luminous flux radiated from the arc tubetoward the oval reflector, the center of discharging emission from the arc tubeis disposed at a first focal position Lof the oval reflector, and the secondary reflecting mirroris configured as a separate member from the arc tube, so that the outer peripheral portion of the secondary reflecting mirroris accommodated within a circular cone shown by boundaries L, Lconnecting a second focal position Lof the oval reflectorand the distal end of the sealed sectionof the arc tubewhen being mounted to the front sealed sectionof the arc tube

Light source device, method of manufacturing light source, and projector

A light source unit including an arc tube having a light emitting section, sealed sections, an elliptic reflector, and a secondary reflecting mirror to cover the front side of the light emitting section and reflect a luminous flux radiated from the light emitting section toward the elliptic reflector. The center of discharging emission from the arc tube is disposed at a first focal position of the elliptic reflector, and the secondary reflecting mirror is configured as a separate member from the arc tube, so that the outer peripheral portion of the secondary reflecting mirror is accommodated within a circular cone connecting a second focal position of the elliptic reflector and the distal end of the front sealed section of the arc tube when being mounted to the front sealed section of the arc tube.

Light source unit, method of manufacturing light source unit, and projector

Aspects of the invention can provide a lamp device that is capable of avoiding concentration of stresses in a sub-mirror fixing portion of an arc tube. The lamp device can include an arc tube provided with a bulb portion encapsulating inside a pair of electrodes, and a pair of sealing portions formed continuously from the bulb portion and sealing inside electrode axes having the electrodes at tip ends and conductor foils to bring the electrode axes into conduction, a main reflection mirror, to which the sealing portion is fixed, to reflect lights emitted from the arc tube toward an illuminated region, and a sub-mirror fixed to the sealing portion in such a manner that a reflection surface opposes the main reflection mirror with the bulb portion in between. The sub-mirror can be bonded with a bonding agent to a surface region of the sealing portion present in a direction moving away from the bulb portion in reference to a position corresponding to a termination of the electrode axis.

Lamp device and projector equipped with the same

A lamp device and a projector having the lamp device eliminated of light leaking in a direction opposite to a reflecting direction at a rear end of an encapsulation fixing an arc tube on a reflection mirror is simply and inexpensively provided. An arc tube and a reflection mirror are provided. The arc tube has encapsulations one of which is inserted in a cylinder of the reflection mirror thereby securing the encapsulation and the cylinder together by an adhesive. The bulb of the arc tube and the other encapsulation are positioned on a side close to a reflection surface of the reflection mirror. The encapsulation inserted in the cylinder and positioned on a side opposite to the reflection surface has an end at least at an end face of which is covered with the adhesive thereby providing light shield.

Lamp device, manufacturing method for same and projector having a lamp device

A light source device has: a light-emitting tube including a light-emitting portion that emits a light beam through electrodes and a pair of sealing portions provided on both sides of the light-emitting portion and lead wires for making electrical continuity between the electrodes and an external power source, the lead wires extending from the distal ends of the sealing portions, respectively; and a reflector having a concave reflecting surface that emits, from the opening thereof, the light beam irradiated by the light-emitting tube after aligning in a predetermined direction, in which the lead wire extends from the sealing portion on the light beam irradiation front side of the reflector up to the opening end portion of the reflector, the lead wire having bent portions in which the lead wire is sequentially bent along the shape of the opening edge portion. The lead wire is reliably fixed to the reflector by the spring force between the bent portions.

Light source device and projector

In a lamp device provided with an arc tube, a principal reflection mirror, and a sub-mirror; a decrease in illumination light, caused by a trigger line disposed to improve the turn-on characteristics of the arc tube, being suppressed. The lamp device include an arc tube having a bulb portion that incorporates electrodes and sealing portions; a principal reflection mirror; a sub-mirror; leads connected to an electrode at an end portion of each of the sealing portions; and a trigger line. The trigger line has a ring-like portion wound around the sealing portion. The trigger line extends from the ring-like portion and has a wiring path that passes a neighborhood of the bulb portion without coming into contact with the bulb portion, further extends along the sealing portion and is connected to the lead. The wiring path is in the same plane that extends through an optical axis.

Lamp device and projector therewith

A light source device () has: a light-emitting tube () including a light-emitting portion () that emits a light beam through electrodes () and a pair of sealing portions () provided on both sides of the light-emitting portion () and lead wires () for making electrical continuity between the electrodes () and an external power source, the lead wires () extending from the distal ends of the sealing portions (), respectively; and a reflector () having a concave reflecting surface () that emits, from the opening thereof, the light beam irradiated by the light-emitting tube () after aligning in a predetermined direction, in which the lead wire () extends from the sealing portion () on the light beam irradiation front side of the reflector () up to the opening end portion () of the reflector (), the lead wire () having bent portions () in which the lead wire () is sequentially bent along the shape of the opening edge portion (). The lead wire () is reliably fixed to the reflector () by the spring force between the bent portions ().

A light source unit including an arc tube having a light emitting section, sealed sections, an elliptic reflector, and a secondary reflecting mirror to cover the front side of the light emitting sections and reflect a luminous flux radiated from the light emitting section toward the elliptic reflector. The center of discharging emission from the arc tube is disposed at a first focal position of the elliptic reflector, and the secondary reflecting mirror is configured as a separate member from the arc tube, so that the outer peripheral portion of the secondary reflecting mirror is accommodated within a circular cone connecting a second focal position of the elliptic reflector and the distal end of the front sealed section of the arc tube when being mounted to the front sealed section of the arc tube.

A manufacturing method of an optical device includes an optical component housing operation Sfor housing a plurality of optical components in a casing body, an optical component positioning operation Sfor adjusting the positions of the optical components by shifting the optical components to position by positioning members at predetermined positions on an illumination optical axis of a light beam irradiated by a light source, and an optical component position fixing operation Sfor fixing the positions of the optical components on the casing body after the optical component positioning operation S. The optical component housing operation further includes a positioning member inserting process for inserting the positioning members to holes on the casing body, an optical component housing process for housing the optical components in the casing body, and a positioning member abutting process by which the positioning members abut on the optical components.

Manufacturing method of optical device

Exemplary embodiments of the present invention include a light source unit in which only a small number of components are required, the shapes of the corresponding components are not complicated, a lens is fixed and hence good workability is achieved, and lowering of an illumination intensity of the light source unit while avoiding occurrence of displacement between an optical axis of an elliptic reflector integrated in the light source unit and an optical axis of a collimator lens is reduced or prevented.

To reduce or prevent adhesive particles from being scattered toward a light-emitting portion of an arc tube and an auxiliary reflecting surface of an auxiliary mirror even when an inorganic adhesive injected for fixing the auxiliary mirror to the arc tube is boiled, a method of manufacturing a light source lamp includes: setting a light-reflecting surface of the auxiliary mirror so as to face the light-emitting portion of the arc tube and injecting an adhesive into a gap between the auxiliary mirror and the arc tube; heating and curing the adhesive from a side nearer to the light-emitting portion of the arc tube; and attaching the reflector to the arc tube with the auxiliary mirror fixed thereto. For example, a heated air blowoff and light irradiation toward the adhesive form the side nearer to the light-emitting portion of the arc tube may be performed. Further, a projector includes: an illumination system with the light source lamp; an optical modulator; and a projector lens.

Light source lamp and manufacturing method thereof, and projector

A light source device includes: a light source lamp that has a light-emitting portion and sealing sections provided on both sides of the light-emitting portion; a reflector that aligns and irradiates a light beam radiated by the light source lamp in a predetermined direction; and a sub-reflection mirror of which reflection surface opposes to a reflection surface of the reflector and reflects the light beam radiated by the light-emitting portion of the light source lamp toward the reflector. In the sub-reflection mirror, an adhesion surface of an insertion hole is bonded to the sealing section by an adhesive in a condition that the sealing section is inserted in the insertion hole. A cutting portion of the sub-reflection mirror is so formed to extend over a portion bonded by the adhesive in plan view.

An optical component casing () having a plurality of holes penetrating toward the inside thereof includes a casing body which is constituted of a container (A), in which a plurality of optical components are housed and arranged therein, and a lid (B), and a plurality of positioning members () for positioning the plurality of optical components at predetermined positions in the casing body. The plurality of positioning members () abut on the optical components by being inserted through the plurality of holes to position the optical components at the predetermined positions on an illumination optical axis of light beam irradiated by a light source.

Optical component casing and projector

The light emitted from a focal position-detecting light sourceand reflected from a reflectoris projected onto a screenand a projected image on the screenis detected by a focal position-detecting cameraBased on this projected image, the focal position-detecting light sourceis moved by a position adjusting systemso as to place the focal position-detecting light sourceat a focal position of the reflectorand the position of the focal position-detecting light sourceat this time is detected as the focal position of the reflectorWhen the focal position of the reflectoris detected, the projected image on the screendetected by the focal position-detecting camerais used, and, therefore, the conventional measurement by a three dimensional measuring instrument is made unnecessary, thereby improving the working efficiency.

Light source apparatus, its manufacturing method and apparatus, reflector focal position-locating method and apparatus, focal position-locating light source, discharge lamp emission position-locating method and apparatus, and discharge lamp-reflector positioning method and apparatus

Growing community of inventors

Matsumoto, Japan

Shohei Fujisawa