Moveably-coupled screen actuators

Patent metadata

Field	Value
Publication number	US-9921416-B2
Application number	US-201515109791-A
Country	US
Kind code	B2
Filing date	Jan 2, 2015
Priority date	Jan 3, 2014
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

A speckle damping system for dampening speckle on a projection screen for a projection display system employing coherent or partially coherent light sources (e.g., lasers, LEDs) are disclosed. In one embodiment, a rotatably coupled system is disclosed, comprising: a set of actuators; a set of rotatably coupled mounts, each of said set of rotatably coupled mount capable of mounting at least one said actuator; and wherein said at least one actuator mounted on said rotatably coupled mount is in moveable mechanical communication with said projection screen. In another embodiment, a linearly coupled system is disclosed comprising: a set of actuators; a set of linearly coupled mounts, each of said set of linearly coupled mount capable of mounting at least one said actuator; and wherein said at least one actuator mounted on said linearly coupled mount is in moveable mechanical communication with said projection screen.

First claim

The invention claimed is:

1. A display screen, comprising:
a display surface;
an actuator configured to emit vibrations;
a rotatably coupled mount configured to rotatably couple the actuator at the display surface, wherein the rotatably coupled mount is secured to a frame separate from the display screen.

2. The display screen according to claim 1 , wherein the actuator is held by the rotatably coupled mount adjacent to the screen.

3. The display screen according to claim 1 , wherein movement of the screen causes the actuator to rotate adjacent to the screen.

4. A display screen, comprising:
a display surface;
an actuator configured to emit vibrations;
a rotatably coupled mount configured to rotatably couple the actuator at the display surface, wherein the rotatably coupled mount comprises an arm mounted on a pivot and wherein the pivot is secured to a frame separate from and positioned on a side of the display screen opposite the viewing surface.

5. A speckle dampening system for dampening speckle on a projection screen for a projection display system, said projection display system comprising coherent light sources, said system comprising:
a set of actuators, each said actuator capable of emitting a vibration of a set of desired frequencies;
a set of rotatably coupled mounts, each of said set of rotatably coupled mount capable of mounting at least one said actuator; and
wherein said at least one actuator mounted on said rotatably coupled mount is in moveable mechanical communication with said projection screen.

6. The system of claim 5 wherein said actuators comprise one of a group, said group comprising: mechanical actuators, voice coils, ultrasound actuators, electromagnet and solenoid.

7. The system of claim 5 wherein said rotatably coupled mount further comprises:
a first support portion, said first support portion capable of mounting an actuator;
a second support portion, said second support portion capable of maintaining a substantially stable frame for said first support portion; and
a pivot, said pivot mechanically mating said first support portion to said second support portion.

8. The system of claim 7 wherein said first support portion comprise a first length that is substantially longer than a range of motion of the screen.

9. The system of claim 8 wherein said first length substantially reduces an angular variation of said actuator with respect to the plane of said projector screen.

Assignees

• Dolby Laboratories Licensing Corp

Inventors

• Basler Brad
• Davies Trevor
• Gorny Douglas J
• Allen Wilson

Classifications

• G03B21/56

  Projection screens · CPC title

• G03B21/562 Primary

  Screens moving during projection (G03B21/58 - G03B21/62 take precedence) · CPC title

• G02B27/48 Primary

  Laser speckle optics · CPC title