ROTATIONALLY STATIC LIGHT EMITTING MATERIAL WITH ROTATING OPTICS

• US 20160025307A1
• Filed: 07/28/2014
• Published: 01/28/2016
• Est. Priority Date: 07/28/2014
• Status: Active Grant

• Current Assignee: Christie Digital Systems Canada Incorporated (Ushio Incorporated)
• Original Assignee: Christie Digital Systems
• Inventors: ADEMA, Daniel Robert, HILL, Graham, MA, Joseph
• Granted Patent: US 9,389,492 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G03B 21/00 Projectors or projection-type viewers; Accessories therefor devices for changing pictures G03B23/00
• CPC Class Codes: G03B 21/16 Cooling; Preventing overheating
• CPC Class Codes: G03B 21/204 using secondary light emission, e.g. luminescence or fluorescence using different colours G03B33/00; if related to video signals H04N9/3197
• CPC Class Codes: H01S 5/00 Semiconductor lasers superluminescent diodes H01L33/00
• CPC Class Codes: H01S 5/0071 for beam steering, e.g. using a mirror outside the cavity to change the beam direction
• CPC Class Codes: H01S 5/0087 for illuminating phosphorescent or fluorescent materials, e.g. using optical arrangements specifically adapted for guiding or shaping laser beams illuminating these materials
• CPC Class Codes: H01S 5/4093 Red, green and blue [RGB] generated directly by laser action or by a combination of laser action with nonlinear frequency conversion
• CPC Class Codes: H04N 9/00 Details of colour television systems

Abstract

A system including rotationally static light emitting material with rotating optics is provided. The system comprises: a heatsink; at least one light emitting material on the heatsink, at least a portion of the light emitting material being circularly symmetrical around an axis, the heatsink and the light emitting material being rotationally fixed;

optics configured to rotate relative to the at light emitting material around a rotational axis that is coaxial with the axis of the light emitting material, the optics configured to: receive excitation light along the rotational axis; convey the excitation light to one or more locations on the light emitting material as the optics are rotating; collect light emitted from the one or more locations on the light emitting material excited by the excitation light; and, convey the light collected from the at least one light emitting material to the rotational axis for emission there along.

Claims

1. A system comprising:

a heatsink;

at least one light emitting material located on the heatsink, at least a portion of the at least one light emitting material being circularly symmetrical around an axis, the heatsink and the at least one light emitting material being rotationally fixed;

optics configured to rotate relative to the at least one light emitting material around a rotational axis that is coaxial with the axis of the at least one light emitting material, the optics configured to;

receive excitation light along the rotational axis;

convey the excitation light to one or more locations on the light emitting material as the optics are rotating;

collect light emitted from the one or more locations on the light emitting material excited by the excitation light; and

,

convey the light collected from the at least one light emitting material to the rotational axis for emission there along.

2. The system of claim 1, further comprising a motor configured to rotate the optics relative to the at least one light emitting material.

3. The system of claim 1, further comprising at least one stationary light source configured to generate the excitation light.

4. The system of claim 1, further comprising:

at least one stationary light source configured to generate the excitation light; and

stationary optics for conveying the excitation light to the optics along the rotational axis.

5. The system of claim 1, further comprising one or more of a body and a frame, one or more of the body and the frame comprising the optics.

6. The system of claim 1, further comprising one or more of a body and a frame, one or more of the body and the frame comprising the optics and a counter balance so that a center of mass of one or more of the body and the frame is located along the rotational axis.

7. The system of claim 1, wherein the optics comprise one or more of:

at least one dichroic mirror;

at least one lens; and

at least one prism.

8. The system of claim 1, wherein a surface of the heatsink and the at least one light emitting material comprises an annulus symmetrical about the axis, and the optics are further configured to rotate along the surface.

9. The system of claim 1, wherein the heatsink comprises a cylinder, and the at least one light emitting material is located on an interior surface of the cylinder, the optics configured to rotate within the cylinder.

10. The system of claim 1, wherein the heatsink comprises a cylinder, and the at least one light emitting material is located on an exterior surface of the cylinder, the optics further configured to rotate around the exterior surface of the cylinder.

11. The system of claim 1, wherein the at least one light emitting material comprises at least two light emitting materials located at different portions of the heatsink, each of the at least two light emitting materials being circularly symmetric about the axis, the optics further configured to convey the excitation light to each of the at least two light emitting materials as the optics are rotating.

12. The system of claim 1, wherein the optics are further configured to:

convey the excitation light to at least two different portions of the at least one light emitting material;

collect the light emitted from the at least two different portions excited by the excitation light; and

convey the light collected from the at least two different portions to the rotational axis for emission there along.

13. The system of claim 1, further comprising apparatus for displacing the heatsink relative to the optics.

14. The system of claim 1, wherein the heatsink further comprises a static waterblock.

15. The system of claim 1, wherein the heatsink comprises a toroid symmetrical about the axis.

16. The system of claim 1, wherein the heatsink comprises a toroid symmetrical about the axis and the optics are configured to one or more of:

receive the excitation light through the toroid; and

convey the light collected from the at least one light emitting material through the toroid.

17. The system of claim 1, wherein the optics are further configured to receive the excitation light from a first side of the optics and convey the light collected from the at least one light emitting material back through the first side.

18. The system of claim 1, wherein the optics are further configured to receive the excitation light from a first side of the optics and convey the light collected from the at least one light emitting material through a second side opposite the first side.

19. The system of claim 1, wherein the light emitting material is located on opposing sides of the heatsink and the optics are further configured to receive the excitation light from both of the opposing sides of the heatsink.