Projection television

• US 6,633,346 B1
• Filed: 11/29/1999
• Issued: 10/14/2003
• Est. Priority Date: 02/04/1999
• Status: Expired due to Fees

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Yamamoto, Zenkou
• Primary Examiner(s): Miller, John
• Assistant Examiner(s): Tran, Trang U.
• Application Number:
  US09/449,557
• Time in Patent Office: 1,415 Days
• Field of Search: 348/744, 348/750, 348/751, 348/756, 348/757, 348/759, 348/761, 348/787, 348/788, 348/789, 353/79, 359/457
• US Class Current: 348/744
• CPC Class Codes: H04N 9/3141 Constructional details thereof details not peculiar to the presence of an electronic spatial light modulator G03B21/14

Abstract

A projection television has a screen that can be oriented toward the viewer. An image-projecting device produces an enlarged video image. A reflecting mirror reflects the enlarged image to the screen from behind such that the image is focused on the screen. A casing houses the screen, the image-projecting device, the reflecting mirror. At least one of the screen, image-projecting device, and reflecting mirror, and casing is tiltable such that the screen is oriented toward a viewer, so that the viewer is able to view the video image having a maximum luminance.

Claims

1. A projection television comprising:

a screen;

an image-projecting device for producing an enlarged image;

a reflecting mirror for reflecting the enlarged image to said screen such that the enlarged image is focused on said screen;

a casing for housing said screen, image-projecting device and reflecting mirror therein, wherein said reflecting mirror and said screen are assembled in an integral assembly in which said reflecting mirror is fixed relative to said screen, and said integral assembly and said image-projecting device are supported such that said integral assembly and said image-projecting device are pivotal simultaneously about a common shaft in opposite directions to each other, so that said screen is oriented toward a viewer; and

a drive source for tilting said casing, wherein said drive source for tilting said casing is a motor.

2. The projection television according to claim 1, wherein said screen, image-projecting device, and reflecting mirror are fixed in said casing, said casing is horizontally tiltably supported such that the screen is oriented toward the viewer.

3. The projection television according to claim 1, wherein said screen, image-projecting device, and reflecting mirror are fixed in said casing, and said casing is vertically tiltably supported such that the screen is oriented toward the viewer.

4. The projection television according to claim 1, wherein said screen is oriented so that the viewer can view an image having a maximum luminance.

5. The projection television according to claim 1, wherein said screen is oriented toward a viewer so that eyes of the viewer are substantially on an axis of image projected from said screen.

6. The projection television according to claim 1, further comprising a remote control unit for remote-controlling said drive source.

7. The projection television according to claim 6, wherein said remote control unit includes a radio transmitter that transmit a control signal and a radio receiver that receives the control signal, the transmitter being operated by the viewer at a distance from said screen and the radio receiver being incorporated in said casing.

8. A projection television comprising:

a screen;

an image-projecting device for producing an enlarged image;

a reflecting mirror for reflecting the enlarged image to said screen such that the enlarged image is focused on said screen; and

a casing for housing said screen, image-projecting device and reflecting mirror therein.

9. The projection television according to claim 8, wherein said reflecting mirror is rotated at an angular speed half of that of the screen.

10. A projection television comprising:

a screen;

an image-projecting device for producing an enlarged image;

a reflecting mirror for reflecting the enlarged image to said screen such that the enlarged image is focused on said screen; and

a casing for housing said screen, image-projecting device and reflecting mirror therein;

wherein said reflecting mirror and said screen are assembled in an integral assembly in which said reflecting mirror is fixed relative to said screen, and said integral assembly and said image-projecting device are supported such that said integral assembly and said image-projecting device are pivotal simultaneously about a common shaft in opposite directions to each other, so that said screen is oriented toward a viewer.