Projection type display, a display and a drive method thereof

Claim 2

1 . A projection type display, comprising an illumination means, a light modulation means modulating light emitted from the illumination means and a projection means projecting light modulated by the light modulation means, wherein; the illumination means is provided with a light source, a uniform illumination means making a distribution of illumination of light incident from the light source uniform, and a liquid crystal element for light adjustment, installed on an optical axis of light emitted from the light source, for adjusting the quantity of light emitted from the light source, and a quantity of light emitted from the illumination means per unit time is adjustable by driving the liquid crystal element for light adjustment with time-sharing in response to information from outside.

Claim 3

2 . A projection type display according to claim 1 , wherein a signal applied to the light modulation means is changed based on a signal supplied to the liquid crystal element for light adjustment such that color tone of light emitted from the liquid crystal element for light adjustment is correctable by the light modulation means.

Claim 4

3 . A projection type display according to claim 1 , wherein; a period of applying voltage to the light modulation means is changed based on a signal supplied to the liquid crystal element for light adjustment such that color tone of light emitted from the liquid crystal element for light adjustment is correctable by the light modulation means.

Claim 5

4 . A projection type display according to claim 1 , wherein; the illumination means is provided with two fly-eye lenses composed of a first fly-eye lens and a second fly-eye lens arranged in order from the side nearest to the light source along the optical axis.

Claim 6

5 . A projection type display according to claim 1 , wherein; the illumination means is a rod state light guide body dividing light form the light source into a plurality of light fluxes by using reflection and emitting them.

Claim 7

6 . A projection type display according to claim 1 , further comprising: a control signal determination means determining a control signal to control the liquid crystal element for light adjustment based on an image signal; and a light adjustment control means controlling the liquid crystal element for light adjustment based on the control signal.

Claim 8

7 . A projection type display according to claim 1 , further comprising: a light modulation control signal determination means determining a control signal to control the light modulation means based on the control signal controlling the liquid crystal element for light adjustment; and a light modulation control means controlling the light modulation means based on the control signal determined by the light modulation control signal determination means.

Claim 9

8 . A method of driving a projection type display adjusting a quantity of light emitted from an illumination means and projecting the light, wherein; a control signal to control the liquid crystal element for light adjustment is determined based on an image signal, and the liquid crystal element for light adjustment is controlled based on the control signal such that a quantity of light irradiated to a light modulation means is adjusted.

Claim 10

8 . A method of driving a projection type display adjusting a quantity of light emitted from an illumination means and projecting the light, wherein; a control signal to control the liquid crystal element for light adjustment is determined based on an image signal, and the liquid crystal element for light adjustment is controlled based on the control signal such that a quantity of light irradiated to a light modulation means is adjusted.

Claim 11

9 . A method of driving a projection type display according to claim 8 , wherein; the control signal to control the liquid crystal element for light adjustment is determined based on the image signal, and the liquid crystal element for light adjustment is controlled based on the control signal such that a quantity of light irradiated to the light modulation means is adjusted, while a control signal to control the light modulation means is determined based on the control signal to control the liquid crystal element for light adjustment, and the light modulation means is controlled based on the control signal such that color tone of light emitted from the liquid crystal element for light adjustment is corrected by the light modulation means.

Claim 12

10 . A display, comprising an illumination means and a light modulation means modulating light emitted from the illumination means, wherein; the illumination means is provided with a light source, a uniform illumination means making a distribution of illumination of light incident from the light source uniform, and a liquid crystal element for light adjustment, installed on an optical axis of light emitted from the light source, for adjusting the intensity of light emitted from the light source, and a quantity of light emitted from the illumination means per unit time is adjustable by driving the liquid crystal element for light adjustment with time-sharing in response to information from outside.

Claim 13

10 . A display, comprising an illumination means and a light modulation means modulating light emitted from the illumination means, wherein; the illumination means is provided with a light source, a uniform illumination means making a distribution of illumination of light incident from the light source uniform, and a liquid crystal element for light adjustment, installed on an optical axis of light emitted from the light source, for adjusting the intensity of light emitted from the light source, and a quantity of light emitted from the illumination means per unit time is adjustable by driving the liquid crystal element for light adjustment with time-sharing in response to information from outside.

Claim 14

11 . A display according to claim 10 , wherein; a signal applied to the light modulation means is changed based on a signal supplied to the liquid crystal element for light adjustment such that color tone of light emitted from the liquid crystal element for light adjustment is correctable by the light modulation means.

Claim 15

12 . A display according to claim 10 , wherein; a period of applying voltage to the light modulation means is changed based on a signal supplied to the liquid crystal element for light adjustment such that color tone of light emitted from the liquid crystal element for light adjustment is correctable by the light modulation means.

Claim 16

13 . A display according to claim 10 , further comprising a control signal determination means determining a control signal to control the liquid crystal element for light adjustment based on an image signal and a light adjustment control means controlling the liquid crystal element for light adjustment based on the control signal.

Claim 17

14 . A display according to claim 10 , further comprising a light modulation control signal determination means determining a control signal to control the light modulation means based on a control signal controlling the liquid crystal element for light adjustment and a light modulation control means controlling the light modulation means based on the control signal determined by the light modulation control signal determination means.

Claim 18

15 . A method of driving a display, adjusting a quantity of light emitted from an illumination means to display the light, wherein; a control signal to control the liquid crystal element for light adjustment is determined based on an image signal, and the liquid crystal element for light adjustment is controlled based on the control signal such that a quantity of light irradiated to the light modulation means is adjusted.

Claim 19

15 . A method of driving a display, adjusting a quantity of light emitted from an illumination means to display the light, wherein; a control signal to control the liquid crystal element for light adjustment is determined based on an image signal, and the liquid crystal element for light adjustment is controlled based on the control signal such that a quantity of light irradiated to the light modulation means is adjusted.

Claim 20

16 . A method of driving a display according to claim 15 , wherein; the control signal to control the liquid crystal element for light adjustment is determined based on the image signal, and the liquid crystal element for light adjustment is controlled based on the control signal such that a quantity of light irradiated to the light modulation means is adjusted, while a control signal to control the light modulation means is determined based on the control signal to control the liquid crystal element for light adjustment, and the light modulation means is controlled based on the control signal such that color tone of light emitted from the liquid crystal element for light adjustment is corrected by the light modulation means.

Claim 21

17 . A projection type display, comprising a light source, a color separation means separating light emitted from the light source into a plurality of color lights, a plurality of light modulation means modulating the plurality of color lights separated by the color separation means, a color integration means integrating the color lights modulated by the plurality of modulation means and a projecting means projecting light integrated by the color integration means, wherein; a first light adjustment means adjusting a quantity of the color light is installed between the light modulation means and the color separation means along an optical path of at least one color light of the separated color lights, and the first light adjustment means is controlled based on information from outside such that a quantity of color light transmitting through the first light adjustment means is adjustable.

Claim 22

17 . A projection type display, comprising a light source, a color separation means separating light emitted from the light source into a plurality of color lights, a plurality of light modulation means modulating the plurality of color lights separated by the color separation means, a color integration means integrating the color lights modulated by the plurality of modulation means and a projecting means projecting light integrated by the color integration means, wherein; a first light adjustment means adjusting a quantity of the color light is installed between the light modulation means and the color separation means along an optical path of at least one color light of the separated color lights, and the first light adjustment means is controlled based on information from outside such that a quantity of color light transmitting through the first light adjustment means is adjustable.

Claim 23

18 . A projection type display according to claim 17 , wherein; a second light adjustment means adjusting a quantity of light emitted from the light source is installed between the light source and the color separation means, and the second light adjustment means is controlled based on information from outside such that a quantity of light emitted from the light source transmitting through the second light adjustment means is adjustable.

Claim 24

19 . A projection type display according to claim 17 , wherein; the plurality of color lights separated by the color separation means are a red light, a green light and a blue light; the plurality of light modulation means comprise a red light modulation means for modulating the red light, a green light modulation means for modulating the green light and a blue light modulation means for modulating the blue light; the first light adjustment means is installed between each of the plurality of light modulation means and the color separation means; and the first light adjustment means is controlled based on information from outside such that a quantity of light transmitting through the first light adjustment means is adjustable.

Claim 25

20 . A projection type display according to claim 17 , wherein a second light adjustment means adjusting a quantity of light emitted from the light source is installed between the light source and the color separation means; and the second light adjustment means is controlled based on information from outside such that a quantity of light emitted from the light source transmitting through the second light adjustment means is adjustable, while the plurality of color lights separated by the color separation means are a red light, a green light and a blue light; the plurality of light modulation means comprise a red light modulation means for modulating the red light, a green light modulation means for modulating the green light and a blue light modulation means for modulating the blue light, further wherein; the first light adjustment means is installed between the green light modulation means and the color separation means along a green light path; and the first light adjustment means is controlled based on information from outside such that a quantity of green light transmitting through the first light adjustment means is adjustable.

Claim 26

21 . A projection type display according to claim 17 , wherein; a second light adjustment means adjusting a quantity of light emitted from the light source is installed between the light source and the color separation means; and the second light adjustment means is controlled based on information from outside such that a quantity of light emitted from the light source transmitting through the second light adjustment means is adjustable, while the plurality of color lights separated by the color separation means are red light, green light and blue light; the plurality of light modulation means comprise a red light modulation means for modulating the red light, a green light modulation means for modulating the green light and a blue light modulation means for modulating the blue light; and further wherein; the first light adjustment means is installed between the blue light modulation means and the color separation means along a blue light path; and the first light adjustment means is controlled based on information from outside such that a quantity of blue light transmitting through the first light adjustment means is adjustable.

Claim 27

22 . A projection type display according to claim 17 , wherein a second light adjustment means adjusting a quantity of light emitted from the light source is installed between the light source and the color separation means; and the second light adjustment means is controlled based on information from outside such that a quantity of light emitted from the light source transmitting through the second light adjustment means is adjustable, while the plurality of color lights separated by the color separation means are red light, green light and blue light; the plurality of light modulation means comprise a red light modulation means for modulating the red light ,a green light modulation means for modulating the green light and a blue light modulation means for modulating the blue light; and further wherein each of the first light adjustment means is installed between the color separation means and the blue light modulation means along a blue light path; and between the color separation means and/or between the green light modulation along a green light path; and these first light adjustment means are controlled based on information from outside such that a quantity of the blue light and the green light transmitting through the first light adjustment means is adjustable.

Claim 28

23 . A projection type display, comprising a light source; a color separation means separating light emitted from the light source into a plurality of color lights sequentially; a plurality of light modulation means modulating the plurality of color lights separated by the color modulation means; and a projecting means sequentially projecting each of the color lights modulated by the light modulation means, wherein; a first light adjustment means, adjusting a quantity of each of the color lights synchronously with emitting each of the color lights from the color separation means, is installed between the light modulation means and the color separation means; and the first light adjustment means is controlled based on information from outside such that a quantity of color light transmitting through the first light adjustment means is adjustable.

Claim 29

23 . A projection type display, comprising a light source; a color separation means separating light emitted from the light source into a plurality of color lights sequentially; a plurality of light modulation means modulating the plurality of color lights separated by the color modulation means; and a projecting means sequentially projecting each of the color lights modulated by the light modulation means, wherein; a first light adjustment means, adjusting a quantity of each of the color lights synchronously with emitting each of the color lights from the color separation means, is installed between the light modulation means and the color separation means; and the first light adjustment means is controlled based on information from outside such that a quantity of color light transmitting through the first light adjustment means is adjustable.

Claim 30

24 . A projection type display, comprising a light source; a color separation means separating light emitted from the light source into a plurality of color lights sequentially; a plurality of light modulation means modulating the plurality of color lights separated by the color modulation means; and a projecting means sequentially projecting each of the color lights modulated by the light modulation means, wherein; a second light adjustment means, adjusting a quantity of light emitted from the light source synchronously with emitting each of the color lights from the color separation means, is installed between the light source and the color separation means; and the second light adjustment means is controlled based on information from outside such that a quantity of light emitted from the light source and transmitting through the second light adjustment means is adjustable.

Claim 31

24 . A projection type display, comprising a light source; a color separation means separating light emitted from the light source into a plurality of color lights sequentially; a plurality of light modulation means modulating the plurality of color lights separated by the color modulation means; and a projecting means sequentially projecting each of the color lights modulated by the light modulation means, wherein; a second light adjustment means, adjusting a quantity of light emitted from the light source synchronously with emitting each of the color lights from the color separation means, is installed between the light source and the color separation means; and the second light adjustment means is controlled based on information from outside such that a quantity of light emitted from the light source and transmitting through the second light adjustment means is adjustable.

Claim 32

25 . A projection type display, comprising a plurality of light sources capable of emitting different color lights respectively; a plurality of light modulation means modulating each of the color lights corresponding to the plurality of light sources; a color integration means integrating the color lights modulated by the plurality of modulation means; and a projecting means projecting light integrated by the color integration means, wherein; a first light adjustment means adjusting the intensity of the color light is installed between the light source and the color modulation means along an optical path of at least one of the different color lights; and the first light adjustment means is controlled based on information from outside such that a quantity of light transmitting through the first light adjustment means is adjustable.

Claim 33

25 . A projection type display, comprising a plurality of light sources capable of emitting different color lights respectively; a plurality of light modulation means modulating each of the color lights corresponding to the plurality of light sources; a color integration means integrating the color lights modulated by the plurality of modulation means; and a projecting means projecting light integrated by the color integration means, wherein; a first light adjustment means adjusting the intensity of the color light is installed between the light source and the color modulation means along an optical path of at least one of the different color lights; and the first light adjustment means is controlled based on information from outside such that a quantity of light transmitting through the first light adjustment means is adjustable.

Claim 34

26 . A projection type display according to claim 25 , wherein; the different color lights are red light, green light and blue light; the plurality of light modulation means comprise a red light modulation means for modulating the red light, a green light modulation means for modulating the green light and a blue light modulation means for modulating the blue light; the first light adjustment means is installed between the plurality of light sources and the plurality of light modulation means, and the first light adjustment means is controlled based on information from outside such that a quantity of the light transmitting through the first light adjustment means is adjustable.

Claim 35

27 . A projection type display, comprising a light source capable of emitting different color lights sequentially; a light modulation means modulating each of the color lights; and a projecting means projecting each of the color lights modulated by the light modulation means, wherein; a first light adjustment means capable of adjusting a quantity of the color light synchronously with emitting each of the color lights from the light source is provided; and the first light adjustment means is controlled based on information from outside such that a quantity of light transmitting through the first light adjustment means is adjustable.

Claim 36

27 . A projection type display, comprising a light source capable of emitting different color lights sequentially; a light modulation means modulating each of the color lights; and a projecting means projecting each of the color lights modulated by the light modulation means, wherein; a first light adjustment means capable of adjusting a quantity of the color light synchronously with emitting each of the color lights from the light source is provided; and the first light adjustment means is controlled based on information from outside such that a quantity of light transmitting through the first light adjustment means is adjustable.

Claim 37

28 . A projection type display according to claim 17 , wherein; at least one of the first light adjustment means is a liquid crystal element for light adjustment.

Claim 38

29 . A projection type display according to claim 17 , wherein; at least one of the first light adjustment means is a shutter of a roll screen system or a disk rotary system.

Claim 39

30 . A projection type display according to claim 17 , wherein; a second light adjustment means, adjusting a quantity of light emitted from the light source, is installed between the light source and the color separation means; the second light adjustment means is controlled based on information from outside such that a quantity of light emitted from the light source and transmitting through the second light adjustment means is adjustable; and at least one of the second light adjustment means is a liquid crystal element for light adjustment.

Claim 40

31 . A projection type display according to claim 17 , wherein; a second light adjustment means, adjusting a quantity of light emitted from the light source, is installed between the light source and the color separation means; the second light adjustment means is controlled based on information from outside such that a quantity of light emitted from the light source and transmitting through the second light adjustment means is adjustable; and at least one of the second light adjustment means is a shutter of a roll screen system or a disk rotary system.

Claim 41

32 . A projection type display according to claim 17 , further comprising: a control signal determination means that determines a control signal for controlling the first light adjustment means and/or the second light adjustment means based on an image signal, and a light adjustment control means controlling the first light adjustment means and/or the second light adjustment means based on the control signal.

Claim 42

33 . A method of driving a projection type display, separating light into a plurality color lights after adjusting a quantity of light emitted from an illumination means and adjusting a quantity of each of the color lights and projecting them, comprising: determining a control signal to control a first light adjustment means and/or a second light adjustment means based on an image signal; and controlling the first light adjustment means and/or the second light adjustment means based on the control signal such that a quantity of light incident onto a light modulation means is adjusted.

Claim 43

33 . A method of driving a projection type display, separating light into a plurality color lights after adjusting a quantity of light emitted from an illumination means and adjusting a quantity of each of the color lights and projecting them, comprising: determining a control signal to control a first light adjustment means and/or a second light adjustment means based on an image signal; and controlling the first light adjustment means and/or the second light adjustment means based on the control signal such that a quantity of light incident onto a light modulation means is adjusted.