Display and display method

• US 20050212980A1
• Filed: 03/03/2005
• Published: 09/29/2005
• Est. Priority Date: 03/23/2004
• Status: Abandoned Application

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Miyazaki, Keiichi
• Application Number:
  US11/070,262
• Publication Number:
  US 20050212980A1
• Time in Patent Office: Days
• US Class Current: 348/744
• CPC Class Codes: H04N 9/3114 by using a sequential colour filter producing one colour at a time
• 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

Abstract

A display for converting light emitted from a light source into light of a different wavelength through color filters and projecting the provided light, the display comprising: a pair of color wheels each having a disk shape, wherein each of the pair of color wheels comprises: a first color filter that converts incident light into light having a wavelength of cyan (C); a second color filter that converts incident light into light having a wavelength of magenta (M); and a third color filter that converts incident light into light having a wavelength of yellow (Y), the first, second and third color filters being arranged in a circumferential direction of the color wheel, and wherein the pair of color wheels is placed on the same axis and rotates in synchronization with each other in the circumferential direction.

Claims

1. A display for converting light emitted from a light source into light of a different wavelength through color filters and projecting the provided light, the display comprising:

a pair of color wheels each having a disk shape,

wherein each of the pair of color wheels comprises;

a first color filter that converts incident light into light having a wavelength of cyan (C);

a second color filter that converts incident light into light having a wavelength of magenta (M); and

a third color filter that converts incident light into light having a wavelength of yellow (Y), the first, second and third color filters being arranged in a circumferential direction of the color wheel, and

wherein the pair of color wheels is placed on the same axis and rotates in synchronization with each other in the circumferential direction.

2. The display as claimed in claim 1 further comprising:

a color wheel drive section that rotates the pair of color wheels;

a control section that controls the color wheel drive section so as to drive the color wheel drive section; and

a position sensor that detects positions of the pair of color wheels relative to the rotation direction of the pair of color wheels and outputs a signal indicating the positions to the control section.

3. A display method for converting light emitted from a light source into light of a different wavelength through color filters and projecting the provided light, the display method comprising:

rotating a pair of color wheels each having a disk shape, in synchronization with each other in the circumferential direction on the same axis, each of the pair of color wheels having a first color filter that converts incident light into light having a wavelength of cyan (C), a second color filter that converts incident light into light having a wavelength of magenta (M), and a third color filter that converts incident light into light having a wavelength of yellow (Y), wherein the first, second and third color filters being arranged in a circumferential direction;

applying the light from the light source to the pair of color wheels;

converting the light into light having a wavelength of a CMY color mixture; and

projecting the provided light.