Projector apparatus

Patent metadata

Field	Value
Publication number	US-10859895-B2
Application number	US-201716474223-A
Country	US
Kind code	B2
Filing date	Nov 2, 2017
Priority date	Jan 17, 2017
Publication date	Dec 8, 2020
Grant date	Dec 8, 2020

Abstract

A projector apparatus that can effectively reduce bending of a base plate supporting a lens shifting unit thereon and facilitates replacement of unit parts in the event of a failure is provided. The projector apparatus includes: a base plate attached inside a projector body; a lens supporting unit attached to the base plate and supporting a projection lens so as to be movable relative to the base plate; guiding mechanisms for guiding the lens supporting unit so as to be freely movable in a horizontal direction and a normal direction relative to the base plate; and fixing devices which fix the base plate to the projector body. The fixing devices include a plurality of first fixing devices provided at a peripheral edge of the base plate, and second fixing devices provided on an inner side of the plurality of first fixing devices.

First claim

The invention claimed is:

1. A projector apparatus comprising:
a base plate attached inside a projector body;
a lens supporting unit attached to the base plate and supporting a projection lens so as to be movable relative to the base plate;
guiding mechanisms for guiding the lens supporting unit so as to be freely movable in a horizontal direction and a normal direction relative to the base plate; and
fixing devices which fix the base plate to the projector body,
wherein the fixing devices comprise:
a plurality of first fixing devices provided at peripheral edges of the base plate; and
second fixing devices provided on an inner side of the plurality of first fixing devices, and wherein the guiding mechanisms for guiding the lens supporting unit so as to be freely movable in the horizontal direction comprise:
a guiding mechanism for guiding the lens supporting unit so as to be freely movable in an optical axis direction of the projection lens; and
a guiding mechanism for guiding the lens supporting unit so as to be freely movable in a left/right direction of the projector apparatus.

2. The projector apparatus according to claim 1 , wherein
the lens supporting unit is positioned overlapping with the base plate; and
the lens supporting unit has through-holes formed therein for manipulation of the second fixing devices for attachment and detachment thereof.

3. The projector apparatus according to claim 1 , wherein the first fixing devices are provided outside a movement range of the lens supporting unit.

4. The projector apparatus according to claim 2 , wherein the first fixing devices are provided outside a movement range of the lens supporting unit.

Assignees

• Thk Co Ltd
• Nec Display Solutions Ltd

Inventors

• Shimamura Marie
• Hirota Jun
• Fukushima Hajime
• Furuichi Kunitaka

Classifications

• G03B21/142 Primary

  Adjusting of projection optics · CPC title

• H04N5/74

  Projection arrangements for image reproduction, e.g. using eidophor · CPC title

• G03B21/145

  Housing details, e.g. position adjustments thereof · CPC title

• G02B7/00

  Mountings, adjusting means, or light-tight connections, for optical elements · CPC title