Seiko Epson Corporation

Hidetoshi Hashizume

Masashi Kitabayashi

Shohei Fujisawa

Kazuyuki Iinuma

Hideo Yamaguchi

Hiroshi Kobayashi

Tetsu Nakayama

Hiroshi Tanaka

Kenichi Nakajima

Shigeo Fujita

Takashi Saegusa

Eiji Yokoyama

Toshihiro Hieda

Yoshihiro Terada

Minoru Honjo

Nobutoshi Otuka

A dust collector includes a housing, a dust collecting bag that is installed in the housing and has an air permeability, a supply section that has a pipe coupled to the dust collecting bag, and supplies a powder into the housing via the pipe, a negative pressure generating section that generates a negative pressure in the housing, and a vibration applying section that applies a vibration to the dust collecting bag. The dust collecting bag includes a top surface, a bottom surface, and a side surface coupling the top surface and the bottom surface with each other, and a vibration transmitted to the top surface is larger than a vibration transmitted to the bottom surface.

Dust collector

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 prism structure that includes: a plurality of liquid crystal devices each include a liquid crystal panel and a light emitting-side optical element, and generate an image light through modulation of any of a plurality of color lights in accordance with image information; and a cross dichroic prism that combines the image lights coming from the liquid crystal devices. In the prism structure, each of the liquid crystal devices further includes: a fixture member that is fixed to the cross dichroic prism; a retention member that keeps hold of the liquid crystal panel, and is fixed to the fixture member; and a light emitting-side optical element retention member that keeps hold of the light emitting-side optical element, and is rotation-adjustable about an illumination axis. The light emitting-side optical element retention member is rotation-adjusted about the illumination axis before fixation to the retention member.

Prism structure and projector

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

An optical device is disposed with: a swollen portion that is attached to the underside of a reflective surface of a reflective mirror, swells in an outward direction of the reflective mirror and is configured as part of a spherical surface. A mirror orientation adjustment lever that is attached to the underside of the reflective surface of the reflective mirror, extends along the underside of the reflective mirror, and protrudes from an end edge of the reflective mirror when seen planarly. The reflective mirror is disposed along a side wall of an optical parts-use casing. The side wall includes, at the position where the reflective mirror is disposed, a spherical concave portion corresponding to a spherical surface of the swollen portion, and when the reflective mirror is disposed at the disposition position, the swollen portion is supported by the spherical concave portion.

Optical device and projector

An optical apparatus with plural optical components, including a reflection mirror provided in an optical path of light beams emitted from a light source, and a case for housing the optical components in a predetermined position with respect to the light beams. The optical apparatus has a convex curved surface protruding to the surface of the reflection mirror, and a pair of fixing parts mounted to the back surface of the reflection mirror to sandwich the protruded part therebetween. The case is formed from a component housing member having an opening through which the plural optical components are housed and a lid member for closing the opening. The side wall is provided with fixing grooves to house the reflection mirror in the case and to guide the pair the of fixing parts in placing the reflection mirror in the case.

Optical apparatus and projector

Exemplary embodiments provide an optical device, optical device manufacturing method, and projector that can easily position an optical modulation element in a predetermined position. The optical device includes an optical modulation element holder to hold an optical modulation element thereon so as to be able to transfer heat to cooling fluid within cooling chambers, a plurality of fluid circulation members connected in communication to the cooling chambers, and a cooling fluid relay section that, disposed at a predetermined position relative to the optical axis of a luminous flux emitted from a light source, relays cooling fluid transferred via the plurality of fluid circulation members. Out of the plurality of fluid circulation members, fluid circulation members whose one-side end are connected in communication to the cooling chambers of the optical modulation element holder are formed so that the another-side end thereof protrudes toward a luminous flux emergent side. Insertion holes capable of receiving therethrough the another-side end of the fluid circulation members are formed in a cooling fluid relay section.

Optical device, optical device manufacturing method, and projector

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

A manufacturing apparatus () of an optical unit includes an optical component positioning jig () that has a plurality of holders for holding a plurality of optical components and is positioned at a designed predetermined position of the plurality of optical component, and a table () that holds an optical component casing so that a part of the optical component positioning jig () can be inserted into an opening formed on the optical component casing.

Optical component positioning jig and manufacturing apparatus of optical device

In order to adjust position of color combining optical system relative to a color separating optical system accommodated in an optical component casing for producing a projector, a white laser beam is irradiated on an optical axis of a light beam passing through the optical component casing and is separated by the color separating optical system, the separated respective color lights being incident on a light-incident end surface of the color combining optical system to be combined, the combined light beam being detected by a sensor, in which the position is adjusted while detecting the combined light beam.

POSITION ADJUSTING METHOD AND POSITION ADJUSTING SYSTEM OF COLOR COMBINING OPTICAL SYSTEM, POSITION ADJUSTING METHOD AND POSITION ADJUSTING SYSTEM OF OPTICAL MODULATOR, COLOR COMBINING OPTICAL SYSTEM AND PROJECTOR

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Hotaka-machi, Japan

Hidetoshi Hashizume