FILTER DEVICE
First Claim
1. A filter device, comprising:
- a red filter unit;
a green filter unit;
a blue filter unit; and
a yellow filter unit, wherein a wavelength corresponding to the 50% transmittance in the transmission spectrum of the yellow filter unit is α
1, a wavelength corresponding to the transmittance rising to 50% in the transmission spectrum of the green filter unit is α
2, and |α
2−
α
2|≦
20 nm.
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Accused Products
Abstract
A filter device including a red filter unit, a green filter unit, a blue filter unit and at least one of a yellow filter unit, a cyan filter unit and a magenta filter unit is provided. Red light, green light and blue light are produced when white light passes through the red filter unit, the green filter unit and the blue filter unit. In the CIE1931 color space coordinate, a triangle color space is formed through joining the points representing the red, green and blue light. Moreover, yellow light, magenta light and cyan light are produced when white light passes through the yellow filter unit, the magenta filter unit and the cyan filter unit. In the CIE1931 color space coordinate, the minimum distance from the points representing the yellow, magenta and cyan light to the edge of the triangle is not exceeding in 0.03.
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Citations
20 Claims
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1. A filter device, comprising:
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a red filter unit; a green filter unit; a blue filter unit; and a yellow filter unit, wherein a wavelength corresponding to the 50% transmittance in the transmission spectrum of the yellow filter unit is α
1, a wavelength corresponding to the transmittance rising to 50% in the transmission spectrum of the green filter unit is α
2, and |α
2−
α
2|≦
20 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A filter device, comprising:
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a red filter unit; a green filter unit; a blue filter unit; and a cyan filter unit, wherein a wavelength corresponding to the 50% transmittance in the transmission spectrum of the cyan filter unit is α
3, a wavelength corresponding to the transmittance dropping to 50% in the transmission spectrum of the green filter unit is α
4, and |3−
α
4|≦
10 nm. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A filter device, comprising:
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a red filter unit; a green filter unit; a blue filter unit; and a magenta filter unit, wherein a wavelength corresponding to the transmittance dropping to 50% in the transmission spectrum of the magenta filter unit is α
5, a wavelength corresponding to the 50% transmittance in the transmission spectrum of the blue filter unit is α
6, and |α
5−
α
6|≦
20 nm, a wavelength corresponding to the transmittance rising to 50% in the transmission spectrum of the magenta filter unit is α
7, a wavelength corresponding to the 50% transmittance in the transmission spectrum of the red filter unit is α
8, and |α
7−
α
8|≦
10 nm. - View Dependent Claims (20)
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Specification