Hitachi Maxell, Limited

Hitachi Consumer Electronics Co., Ltd.

Takafumi Ishizu

Atsushi Ishibashi

Koji Hirata

Kosuke Matoba

Toshiyuki Moriya

Kazumasa Ueoka

Nobuyuki Kaku

Kazuomi Kaneko

Yoshihiro Iwama

Chohei Ono

Shinro Inui

Yuta Kawaguchi

Kei Adachi

Kazuo Shikita

Go Horiuchi

Takatsugu Kawabata

Yasuhito Sakayoke

A projection type image display device to be used with a mobile terminal has a housing with an upper side case having a reflective mirror attached thereto and an openable mirror cover formed thereon and a lower side case having a plurality of air exhausting openings provided on a side wall surface thereof. A light source is provided for shining image light that has been magnified and projected onto the reflective mirror; and an image is magnified and projected on the basis of the light from the light source. An optical system is disposed within the lower side case parallel to the bottom surface of the case along a central axis of the device, and also an image processing unit, which includes the light source, and a power supply unit are disposed within the lower case symmetrically with the optical system as the center.

Projection type image display device with symmetrically arranged light source and power supply

A projection video display device, which enlarges and projects an image from an image-displaying means, has a housing and a raisable/lowerable mirror and a power supply, a light source, and a lens unit inside the housing. The raisable/lowerable mirror covers a projection-light opening formed in the top surface of the housing and able to rotate with respect to the housing, and has a convex mirror on the inside surface thereof. The raisable/lowerable mirror covering the top surface of the housing forms a smoothly connected, smooth, convexly curved surface with no height difference between the edge of the raisable/lowerable mirror and the front edge of the opening, and a half-bowl-shaped concavity is formed on at least one side of the raisable/lowerable mirror in the direction of the axis of rotation thereof.

Projection video display device with raisable/lowerable mirror

A projection image display apparatus capable of maintaining the positional accuracy of an integrator optical system even when subjected to an external force is provided. The projection image display apparatus includes an integrator optical system which converges and uniformizes a light emitted from a light source, a color separating optical system which separates the colors of the light emitted from the integrator optical system, a color synthesizing optical system which synthesizes lights separated by the color separating optical system, a projection optical system which emits the light, which has been synthesized by the color synthesizing optical system, onto a projection surface, a first optical case which fixes and houses the integrator optical system, the color separating optical system, and the color synthesizing optical system at respective predetermined positions, and a second optical case which fixes and houses optical components of the integrator optical system at predetermined positions, and the second optical case is attached to the first optical case.

Projection image display apparatus

Projector

Disclosed is a wall-mountable display apparatus that is simple in structure and excellent in withstand load. In an inner central portion of a rear cover of the display apparatus, a boss bulged towards a display panel is formed integrally with the cover, with a distal end of the boss being fixedly coupled to a base chassis in such a manner that the boss end is opposed to part of the base chassis. The boss is formed in a substantially central position of a mounting region defined by four mounting holes to which wall-mounting metallic fixtures are to be mounted. Alternatively, the boss is formed in a substantially central position of the mounting region in a horizontal direction.

Display apparatus

Growing community of inventors

Yokohama, Japan

Takafumi Ishizu