Fujifilm Corporation

Fuji Photo Film Company, Limited

Fujinon Corporation

Ricoh Company, Ltd.

Fuji Electric Co., Ltd.

Fuji Photo Optical Co., Ltd.

Nitto Chemical Industry Co., Ltd.

Hitoshi Shimizu

Nobuhiko Ogura

Katsuaki Muraishi

Yoshiyuki Kunuki

Toshihito Kimura

Tatsuo Fujikura

Masayasu Konishi

Yasuto Kuroda

Hironobu Kayano

Tetsuo Kamigaki

Yasushi Nakazato

Osamu Satoh

Hirohiko Tsuzuki

Yasunobu Sakaguchi

Takeharu Omata

Shu Sato

Kouji Kuruma

Shuji Hirai

Hisashi Ohtsuka

Masashi Hakamata

Nobufumi Mori

Hisashi Shoji

Seiji Hoshino

Takenori Oku

Koji Kuruma

Yoshinori Nakagawa

Satoshi Ouchi

Masayuki Naya

Hiroaki Yamamoto

Masahide Yamashita

Katsuaki Miyawaki

Nekka Matsuura

Jun Yamane

Hideaki Tanaka

Takashi Kubo

Kohji Ue

Toshiaki Sasaki

Kaoru Terashima

Yoshihide Iwaki

Yoshiki Sakaino

Yasuyuki Miyata

Kentarou Nakamura

Shizuyasu Yoshida

Toshitaka Agano

Takeshi Kimura

Kaku Irisawa

Mitsuru Sawano

Takao Kuwabara

Taizo Akimoto

Yoshihiro Seto

Kensuke Masui

Takakazu Endo

Ichiro Watanabe

Masaichi Sawada

Keiko Neriishi

Hideyuki Morimoto

Yukinori Nishioka

Yukio Yamada

Hiroyuki Ota

Noboru Tsukude

Shoki Kasahara

Takahiro Miyato

Tadashi Iwasawa

Sayaka Iba

Nobuko Arima

Shin'ichi Maruyama

Chiharu Fujita

Yu Tojo

A projection lens, which is a projection lens to be attached to a projection apparatus body having an electro-optical device, includes: a first focus optical system; a first holding portion that has an attachment portion and on which light along a first optical axis extending in first directions is incident; and an adjustment frame that holds the first focus optical system. When one of the first directions is defined as a first A direction and the other of the first directions is defined as a first B direction, the first focus optical system is positioned further in the first A direction than the attachment portion, and light along the first optical axis travels in the first B direction. The adjustment frame is movable in the first directions relative to the first holding portion.

Projection lens

A projection apparatus capable of, when an image input from an external device and an OSD image are rotated by rotation of a projection lens, performing rotation correction suitable for the respective images is provided. A projection apparatus () includes a housing; a projection lens () that has a holder and that is rotatably attached to the housing; a first rotation position detection unit (A) and a second rotation position detection unit (B) that detect rotation states of the holder; a DMD (B) that outputs, to the projection lens (), a composite image of a projection image output from an external device and an OSD image including a character output from an internal memory; and a control unit that performs rotation correction on the OSD image and that does not perform rotation correction on the projection image based on detection results of the first rotation position detection unit (A) and the second rotation position detection unit (B) when the holder of the projection lens () rotates.

Projection apparatus that performs rotation correction

A test device includes a specimen having a circular cross section that accommodates a test target, a specimen holding part that holds a plurality of the specimens in a row, light emitting elements in which light is incident on two adjacent specimens among the plurality of specimens, a first light guide paththat guides light emitted by the light emitting elements, and a second light guide path that is formed to have a smaller diameter than a diameter of the first light guide path and that guides the light emitted by the light emitting elements from the first light guide path to the specimen.

Test device

A projection lens includes a lens barrel that accommodates an optical system from which light incident from the housing exits, and that has a first rotary tube that rotates around an optical axis and a first fixed tube at which the first rotary tube is rotatably mounted; and a first conduction portion for performing electrical conduction, the first conduction portion having a fixed electrode that is provided at the first fixed tube and a rotary electrode that is provided at the first rotary tube and that rotates as a result of rotating the first rotary tube, the rotary electrode being disposed at a position that faces the fixed electrode and contacting the fixed electrode at least at a rotation position that has been preset.

Projection lens and projection device

A projection apparatus capable of appropriately performing shift control of a projection image when a posture or a projection direction of a projection lens is changed by rotating the projection lens is provided. A projection apparatus () includes a projection apparatus main body () that causes a DMD (B) to emit a projection image; a projection lens () that projects the projection image emitted from the DMD (B), the projection lens () including a second optical system and a third optical system, the second optical system being provided rotatably around a first rotation axis with respect to the projection apparatus main body (), the third optical system being rotatable around a second rotation axis extending in a direction intersecting with the first rotation axis; a posture information acquisition unit that acquires posture information indicating a posture of the projection lens () with respect to the projection apparatus main body (); a lens shift mechanism () that causes the projection lens () to move in a plane intersecting with an axial direction of the first rotation axis; and a control unit that controls the lens shift mechanism () based on the posture information acquired by the posture information acquisition unit to shift a projection image that is projected from the projection lens ().

Projection apparatus

A projection device includes a drive housing that includes a protruding portion protruding from a central portion, a projection lens that includes a first rotation mechanism, and fans that draw in or discharge gas; the central portion includes a first A side surface that is provided in a first A direction Xcorresponding to one side in a first direction X and a second A side surface that is provided in a first B direction Xcorresponding to the other side in the first direction X; the protruding portion includes a first B side surface in the first A direction Xand includes a second B side surface, which faces the projection lens, in the first B direction; and the fans face the second A side surface and the second B side surface.

Projection device having rotation lock mechanism and projection lens having rotation lock mechanism

An object of the present invention is to provide a projection apparatus capable of appropriately performing control relating to rotation of a projection lens. A projection apparatus according to a first aspect of the present invention includes a housing; a power supply; a control unit; and a projection lens attached to the housing, the projection lens having a holder, a detection unit that detects a rotation state of the holder, and a locking mechanism unit that brings rotation of the holder into a locked state or an unlocked state. The locking mechanism unit does not bring rotation of the holder into the locked state when a rotation state of the holder is other than a specific state. The specific state is a rotation state in which the locking mechanism unit is capable of bringing rotation of the holder into the locked state. When rotation of the holder is not brought into the locked state, the control unit disables an operation relating to the locked state or an operation of turning off the power supply.

A projection lens has a first rotary tube, a first fixed tube at which the first rotary tube is rotatably mounted, a first protrusion portion that is provided at the first rotary tube and that protrudes from the first rotary tube, and a first abutment surface that is provided at the first fixed tube and that abuts upon the first protrusion portion. The projection lens includes a first engaging portion at which the first protrusion portion and the first abutment surface include first engaging portions that face each other in a direction of a first incidence-side optical axis and a first pressing portion that presses the first protrusion portion against the first abutment surface.

An object of the present invention is to provide a projection apparatus capable of appropriately performing control relating to a rotation state and/or a movement state of a projection lens. A projection apparatus according to an aspect of the present invention includes a housing; a light source; a control unit; and a projection lens attached to the housing, the projection lens having a holder, a detection unit that detects a rotation state of the holder, an emission optical system, and a locking mechanism unit that brings rotation of the holder into a locked state or an unlocked state. The projection lens is displaceable between a first position at which a rotation state of the holder is a housed state in which the emission optical system faces the housing and a second position at which the emission optical system does not face the housing by rotating the holder. The second position includes an upper position at which the emission optical system faces an upper side in a vertical direction. The control unit turns off the light source when a rotation state of the holder is the first position. The control unit turns on the light source when the rotation state of the holder is at the upper position. When the light source is turned on in the housed state in which the emission optical system faces the housing, the light emitted from the emission optical system hits the housing, and the temperatures of the projection lens and the housing may increase, which may cause an adverse effect. However, when the rotation state is the housed state, the control unit turns off the light source, thereby preventing the adverse effect.

There is provided a projection lens that is mounted on a housing of a projection device including an electro-optical element. The projection lens comprises an optical system through which light passes, a second holding unit through which light parallel to a second optical axis passes and which is moved rotationally with respect to the housing, a third holding unit through which light parallel to a third optical axis obtained from bending of the second optical axis passes and which is moved rotationally with respect to the second holding unit, an electric drive unit that electrically controls rotational movement of the second holding unit with respect to the housing, rotational movement of the third holding unit with respect to the second holding unit, or drive of the optical system, and a cover part that covers the electric drive unit.

There is provided a projection lens that is mounted on a housing of a projection device including an electro-optical element. The projection lens includes a first holding frame through which light emitted from the housing passes, a second reflective part that refracts an optical axis of light emitted from the first holding frame and includes a pair of side surfaces facing each other, and a second holding frame that holds the second reflective part and includes a pair of first holes provided at positions corresponding to the pair of side surfaces; and each of the pair of side surfaces has a gap between itself and the second holding frame.

An object of the present invention is to provide a projection apparatus capable of appropriately performing control relating to rotation of the projection lens. A projection apparatus according to a first aspect of the present invention includes a housing; a power supply; and a projection lens attached to the housing, the projection lens having a holder and a locking mechanism unit that brings rotation of the holder into a locked state or an unlocked state. Rotation of the holder is in the locked state when the power supply has been turned on. With the first aspect, since the power is turned on in a state in which the projection lens is not rotatable, the locked state can be safely unlocked by user's intention and the holder can be rotated.

A projection lens that is mounted on a housing of a projection device including an electro-optical element includes a first holding unit which is connected to the housing and through which light parallel to a first optical axis serving as an optical axis corresponding to luminous flux incident from the housing passes, a second holding unit through which light parallel to a second optical axis obtained from bending of the light parallel to the first optical axis passes and which is rotated with respect to the first holding unit in a rotatable range less than 360&#xb0;, a first rotation control unit that controls rotation of the second holding unit, and a first electric drive unit. The first rotation control unit is provided on a first outer peripheral surface of one of the first holding unit and the second holding unit. The first electric drive unit is provided on a second outer peripheral surface of the other of the first holding unit and the second holding unit. The first rotation control unit and the first electric drive unit are in a relationship where the first rotation control unit and the first electric drive unit overlap with each other in an extending direction of the first optical axis, and the first rotation control unit and the first electric drive unit are spaced apart from each other in the rotatable range.

A projection apparatus having a light modulation element includes a main body; an optical unit that is rotatably supported by the main body and includes a projection optical system for projecting the spatially modulated light onto the projection surface, a first rotation member rotatably supported to the main body and a second rotation member rotatably supported to the first rotation member; a first sensor; a second sensor; a controller; and a regulation mechanism, and the regulation mechanism includes a moving member that is movable between a regulation position for regulating the rotation and a regulation release position for releasing the regulating of the rotation, and fixes the moving member at the regulation position in a case where the controller determines that the first rotation member and the second rotation member are in the predetermined specific rotation state.

A projection lens has lens holding frames that hold lenses. In a case where an image forming panel is disposed to be shifted with respect to an optical axis of the projection lens, an increase in temperature of a first part on a side to which the image forming panel is shifted with respect to the optical axis L, is greater than that of a second part on the opposite side. A hollow structure, which makes the first partand the second partcommunicate with each other, has a porous layer and is filled with a heat storage medium. By circulating the heat storage medium through the inside of the hollow structure, the first part is cooled, and the second part is heated. Therefore, temperature distribution in the circumferential direction of the lens barrel becomes uniform, and deterioration in performance of the projected image is suppressed.

Projector with projection lens having lens barrel with hollow structure

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Saitama, Japan

Hitoshi Shimizu