Internal aperture mask for embedded optics

• US 5,844,722 A
• Filed: 06/05/1997
• Issued: 12/01/1998
• Est. Priority Date: 06/05/1997
• Status: Expired due to Term

• Current Assignee: JVC Kenwood Corporation
• Original Assignee: JVC Americas Corporation (JVC Kenwood Corporation)
• Inventors: Ruiz, Javier A., Jackson, David G., Li, Chun-Pang, Stephens, Craig P., Sterling, Rodney D.
• Primary Examiner(s): MAI, HUY KIM
• Application Number:
  US08/864,884
• Time in Patent Office: 544 Days
• Field of Search: 359/629, 359/634, 359/637, 359/639, 359/640, 359/811, 359/818, 359/819, 349/5, 349/57, 353/33
• US Class Current: 359/637
• CPC Class Codes: G02B 1/06 made of fluids in transparent cells
• CPC Class Codes: G02B 27/1026 for use with reflective spatial light modulators
• CPC Class Codes: G02B 27/1073 characterized by manufacturing or alignment methods

Abstract

An optical system is provided that has an enclosure which is substantially filled with a fluid. The enclosure also has an aperture for receiving an electromagnetic wave that is altered by an optical component contained in the enclosure. The enclosure also has an aperture mask and blocker that are at least partially immersed in the fluid.

Claims

1. An optical system, comprising:

an enclosure substantially filled with a fluid and having an aperture for receiving an incident electromagnetic wave;

an optical component contained within the enclosure for altering the electromagnetic wave received by the enclosure; and

a wave blocking member at least partially immersed in the fluid for minimizing the scattering of the incident electromagnetic wave.

2. The optical system of claim 1 wherein the wave blocking member further defines a flanged lip affixed to the optical component.

3. The optical system of claim 1 wherein the wave blocking member extends along an end of the optical component which is distal from the incident electromagnetic wave.

4. The optical system of claim 1 wherein a clamp member is associated with the enclosure for securing the optical component within the enclosure.

5. The optical system of claim 1 wherein the optical component is affixed to a frame, the frame defining an aperture for the optical component, and the frame being connected to the enclosure at a predetermined angle with respect to the incident electromagnetic wave.

6. The optical system of claim 5 wherein a clamp member is integrally formed with the enclosure for suspending the optical component and the frame in the fluid contained within the enclosure.

7. An optical system, comprising:

an enclosure substantially filled with a fluid and having an aperture for receiving an incident electromagnetic wave;

an optical component contained within the enclosure for altering the electromagnetic wave received by the enclosure; and

a rail at least partially immersed in the fluid for reducing turbulent flow in the fluid.

8. The optical system of claim 7 wherein a clamp assembly is associated with the enclosure for suspending the optical component within the fluid contained within the enclosure.

9. The optical system of claim 7 wherein the optical component is affixed to a frame, the frame defining an aperture for the optical component, and the frame being connected to the enclosure at a predetermined angle with respect to the incident electromagnetic wave.

10. The optical system of claim 9 further including a pair of rails affixed to the frame and extending downwardly for defining a channel under the frame.

11. The optical system of claim 9 wherein the rail extends downwardly along a first side of the frame, and a second partial rail extends downwardly along a second side of the frame for defining a channel under the frame.

12. The optical system of claim 11 further including a clamp assembly having a bottom flange for defining a remaining portion of the second partial rail thereby extending along the second side of the frame, the clamp assembly affixing the optical component to the frame.

13. The optical system of claim 12 wherein the clamp assembly includes a keeper bar disposed on top of the optical component, and a plurality of fasteners associated with the clamp assembly for applying a force to the keeper bar and securing the optical component to the frame.

14. The optical system of claim 7 wherein the optical component includes a polarizing plate.

15. An aperture mask for use in an optical system that is at least partially embedded in a fluid, comprising:

a frame providing a mounting surface for an optical component, the frame further defining an aperture for the optical component;

a wave blocking member connected to the frame for minimizing the scattering of incoming radiation; and

a rail connected to the frame that defines a channel for reducing turbulent flow in the fluid.

16. The aperture mask of claim 15 wherein the wave blocking member further defines a flanged lip extending along an end of the optical component which is distal from the incident electromagnetic wave.

17. The aperture mask of claim 15 wherein the rail includes a first rail extending downwardly along a first side of the frame, and a second partial rail extending partially downwardly along a second side of the frame.

18. The aperture mask of claim 17 further comprising a clamp assembly having a bottom flange for defining a remaining portion of the second partial rail thereby extending along the second side of the frame, the clamp assembly for securing the optical component to the frame.

19. The aperture mask of claim 15 wherein the optical component includes a polarizing plate.

20. A beamsplitter assembly for use in a projector system, comprising:

a housing filled with a fluid and having an aperture for receiving an incident electromagnetic wave;

a polarizing plate that alters the incident electromagnetic wave;

a frame defining a mounting surface for the polarizing plate, the frame connected to the housing at a predetermined angle with respect to the incident electromagnetic wave;

a flanged lip associated with the frame and extending along an end of the frame which is distal from the incident electromagnetic wave for impeding scattering of the incident electromagnetic wave; and

at least one rail affixed to the frame and extending downwardly to form a channel along an underside of the frame for reducing turbulent flow in the fluid.