Screen and image projection apparatus

Abstract

Light emitted from a light source is modulated and projected on a screen. The screen includes a securing member, a diffuser plate supported by the securing member using a plurality of elastic members, where the elastic members are disposed so that the diffuser plate is resiliently displaced in two directions in the plane of the diffuser plate, and a driving unit that moves the diffuser plate with respect to the securing member in the two directions in the plane of the diffuser plate.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic cross-sectional view of a screen according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of a main portion of the screen according to the embodiment of the present invention;

FIG. 3 is a schematic perspective view of another main portion of the screen according to the embodiment of the present invention;

FIG. 4 illustrates an example of the displacement of the screen according to the embodiment of the present invention;

FIG. 5 is a block diagram of an image projection apparatus according to an embodiment of the present invention;

FIG. 6 is a block diagram of an image projection apparatus according to an embodiment of the present invention;

FIG. 7 is a block diagram of an image projection apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of the structure of a known screen; and

FIG. 9 is another schematic diagram of the structure of the known screen.

Claims

1. A screen, light emitted from a light source being modulated and projected onto the screen, the screen comprising: a securing member;a diffuser plate supported by the securing member using a plurality of elastic members, the elastic members being disposed so that the diffuser plate is resiliently displaced in two directions in the plane of the diffuser plate; anda driving unit that moves the diffuser plate with respect to the securing member in the two directions in the plane of the diffuser plate.

2. The screen according to claim 1, wherein the diffuser plate is indirectly supported by the securing member using a connecting member disposed between the elastic members.

3. The screen according to claim 1, wherein the plurality of elastic members include at least two leaf springs and wherein at least one of the leaf springs is disposed so that a length direction thereof is directed along one of the two directions, the other leaf springs are disposed so that length directions thereof are directed along one of the two directions, the other leaf springs are disposed so that length directions thereof are directed along the other of the two directions, and width directions of the at least two leaf springs are directed along an optical axis of the light emitted from the light source.

4. The screen according to claim 1, wherein the driving unit includes a voice coil motor.

5. The screen according to claim 1, wherein the two directions represent a horizontal direction and a vertical direction of the screen.

6. An image projection apparatus comprising: a light source for emitting light;a screen including a securing member, a diffuser plate, and a driving unit; anda light modulation unit configured to modulate the light emitted from the light source and project the light onto the screen so as to display an image;wherein the diffuser plate is supported by the securing member using a plurality of elastic members, the elastic members are disposed so that the diffuser plate is resiliently displaced in two directions in the plane of the diffuser plate, and the driving unit moves the diffuser plate with respect to the securing member in the two directions in the plane of the diffuser plate.