Projection-type display apparatus and control method for projection-type display apparatus as well as control program for Projection-type display apparatus

• US 20100328552A1
• Filed: 09/07/2010
• Published: 12/30/2010
• Est. Priority Date: 02/04/2004
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: HASEGAWA, Hiroshi, MIYAZAWA, Yasunaga
• Granted Patent: US 8,777,425 B2
• Time in Patent Office: Days
• US Class Current: 348/744
• CPC Class Codes: G02B 26/0833 the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD G02B26/0825 takes precedence; micromechanical devices in general B81B
• CPC Class Codes: H04N 9/315 Modulator illumination systems general applications of lighting devices F21V; general optical systems G02B; lamp houses for projectors not peculiar to the presence of an electronic spatial light modulator G03B21/20
• CPC Class Codes: H04N 9/3197 using light modulating optical valves

Abstract

Exemplary embodiments provide a projection-type display apparatus, which can address or realize a reduction in weight and size, a reduction in power consumption, and a reduction in noise, and address or realize a reduction in price, and a control method for the projection-type display apparatus, as well as a control program for the projection-type display apparatus. The projection-type display apparatus includes a solid-state light source that emits light, a mirror device that controls an emitting direction of the incident light to thereby subject the incident light to temporal modulation, and a projecting device that projects the modulated light.

Claims

1. A projection-type display apparatus, comprising:

a solid-state light source that emits light;

a mirror device that controls an emitting direction of the light incident from the solid-state light source to thereby subject the incident light to temporal modulation; and

a projecting device that projects the modulated light, wherein

the mirror device includes micro-mirrors arranged in a matrix shape,

the solid-state light source is configured to be turned on after a predetermined time has elapsed from the micro-mirror turning on.

2. A projection-type display apparatus, comprising:

a solid-state light source that emits light;

a mirror device that controls an emitting direction of the light incident from the solid-state light source to thereby subject the incident light to temporal modulation, the mirror device includes micro-mirrors arranged in a matrix shape;

a control unit that outputs a modulation control signal based on a video signal to control the temporal modulation by the mirror device;

an A/D conversion unit that converts an analog signal into a digital signal; and

a projecting device that projects the modulated light, wherein

the video signal is inputted to the control unit via the A/D conversion unit in the case the video signal is the analog signal, the video signal is inputted to the control unit directly in the case the video signal is the digital signal.

3. A projection-type display apparatus according to claim 2, further comprising:

a decoder that decodes the video signal in the case the video signal is compressed data.