CN1368653A - Digital colour image technique - Google Patents

Abstract

The invention discloses a digital color imaging method. Arranging a reflector or projecting aperture and lens, etc. according to the rule constitutes the scanning imaging element. Modulated color light beam of image signal is scanned or relevant position of lens and screen through the reflector or projector so as to get color pixel needed and visual color image. The invention is applicable to color imaging on TV, display, motion picture projector and projecting camera.

Description

A kind of color digital formation method

The invention belongs to the colour image technique field.

Existing color imaging method, based on the film colour image technique of projection imaging, owing to be subjected to the film fineness, can only use the influence of factor such as incoherent light amplification, sharpness is limited; Based on the TV colour image technique of electron gun fluorescence excitation screen, owing to be subjected to the restricted number etc. of fluorescent powder fineness, number of scanning lines, unit area shadow mask, sharpness is limited, and can produce the electromagnetic radiation of harmful human body; Digital micro-mirror array catoptric imaging technology, cost height, sharpness are subject to the physical area and the gap of micro mirror.

The purpose of this invention is to provide a kind of color digital formation method, it not only can improve the sharpness of chromatic image, and can reduce electromagnetic radiation significantly.

The object of the present invention is achieved like this: according to the colour mixture principle, adopt additive color process, whether red, green, blue light beam or the red, orange, yellow, green, blue, blue, purple light beam controlled respectively in the light source with the light switch group pass through; Adopt subtractive color process, whether red, green, blue light beam or the red, orange, yellow, green, blue, blue, purple light beam controlled respectively in the white light with wave filter pass through, on screen, curtain, to obtain the luminous point of different colours, whether the signal that sends with the colour imaging unit passes through to reach micro mirror array, micropore scanning imagery unit by switch group or wave filter modulation different colours light beam, the reflection or project on lens, the screen, the quick scanning of these different colours light beams, form the pixel of different colours, constitute the coloured image of human eye perception.

Advantage of the present invention and good effect are: owing to the luminous point through overconvergence, laser spots particularly, dot matrix on the unit area will be higher than electron beam, and there is not the restriction that needs electric signal to be converted into light signal through fluorescence, can not produce electromagnetic radiation, therefore, can improve the sharpness of coloured image and avoid the harm of electromagnetic radiation to human body.

The present invention is further described below in conjunction with accompanying drawing.

Fig. 1 is a subtractive color process color imaging method schematic diagram.

Fig. 2 is an additive color process color imaging method schematic diagram.

Fig. 3 is a projection imaging scanning element structural drawing.

Fig. 4 is a rotary reflection image scanning structural drawing.

Fig. 5 is deflecting reflection image scanning cellular construction figure.

Fig. 6 is a flat scanning image-generating unit structural drawing.

Among Fig. 1,1. being white light source, 2. is that 3. beam of white light is the wave filter by the control of colour imaging signal demodulation unit, 4. is the control bundle scanning element, 5. is optical screen or curtain.

In Fig. 1, after the energising, 1. light source sends and continues or the pulse white light, become beam of white light 2. through optically focused, 2. beam of white light passes through wave filter 3. the time, controlled filter is red respectively according to the colour imaging signal for the colour imaging signal demodulation unit, orange, yellow, green, blue or green, blue, the a whether purple light passes through, b, c, d, e, f, the g color filter opens or closes, beam of white light is become constitute the required column of colour of coloured image, 4. scan through the control bundle scanning element, on optical screen or curtain correspondence position 5., produce A successively fast, B, colored points such as C constitute the coloured image of human eye perception.1. light source can adopt ordinary light source, also can adopt lasing light emitter.3. wave filter sees Table A according to the part color of colour imaging luminous point that signal modulates:

Table A:

Light source colour

The state of a of control ruddiness

Control the state of the b of orange light

The state of the c of control gold-tinted

The state of the d of control green glow

Control the state of the e of blue or green light

The state of the f of control blue light

The state of the g of control purple light

Obtain the color of luminous point

White	Open	Open	Open	Open	Open	Open	Open	White
									White	Open	Close	Close	Close	Close	Close	Close	Red
White	Close	Open	Close	Close	Close	Close	Close	Orange
									White	Close	Close	Open	Close	Close	Close	Close	Yellow
White	Close	Close	Close	Open	Close	Close	Close	Green
									White	Close	Close	Close	Close	Open	Close	Close	Cyan
White	Close	Close	Close	Close	Close	Open	Close	Blue
									White	Close	Close	Close	Close	Close	Close	Open	Purple
White	Close	Close	Close	Close	Close	Close	Close	Black

Only have a, the b of control red, green, blue, a c3 filter plate to constitute as wave filter, its producible luminous point sees Table B:

Table B:

Signal and action that ruddiness filter disc a is accepted	Signal and action that green glow filter disc b is accepted	Signal and action that blue light filter disc c is accepted	Kind by color	Color on the screen point
					0/ opens	0/ opens	0/ opens	Have three kinds of colors	White
0/ opens	1/ closes	1/ closes	Only have red color	Red
					0/ opens	0/ opens	1/ closes	Have red green two color	Yellow
0/ opens	1/ closes	0/ opens	Have red blue dichromatism	Purple
					1/ closes	0/ opens	1/ closes	Only have green color	Green
1/ closes	0/ opens	0/ opens	Have turquoise dichromatism	Cyan
					1/ closes	1/ closes	0/ opens	Only have blue color	Blue
1/ closes	1/ closes	1/ closes	Three kinds of colors all do not have	Black

The brightness of luminous point can be tuning by the flux of light beams such as, red, green, blue white to the control of light source or control; The color saturation of luminous point can be mixed tuning with former luminous point by the beam of white light of synchronous controllable brightness in proportion.

In Fig. 2,1. be light source, 2. be light beam, 3. be prism or grating that chromatic dispersion is used, 4. be the photoswitch group, 5. be convergent lens, 6. be scanning element, 7. optical screen or curtain.Suppose that 1. light source sends the mixed light that comprises three kinds of colors of red, green, blue, with the convergence reflex mirror 3. light gone up by narrow slit post-concentration to a prism or grating, according to the chromatic dispersion principle of light, this Shu Baiguang is broken down into a band spectrum that comprises three kinds of colors of red, green, blue; With cylindrical lens 5. will be along continuous straight runs disperse the light that comes again along continuous straight runs assemble, owing to lay a switch group that comprises three switch a, b, c from prism to the way of assembling the unit 4. at light, whether these three switch a, b, c can control respectively allows the passing through of three kinds of color of light of red, green, blue; When these three switches were all opened, red, green, blue three coloured light can pass through them respectively, through 6. scanning, so 7. go up spectrum-white point that these three kinds of colors have appearred in just " simultaneously " at screen; A closes when switch, switch b, when c opens, and ruddiness just can not pass through switch a, then at this time on screen, just lacked ruddiness, and only be left the colour mixture-blue or green color of green and blue addition.The exercising result of other two switches also similarly, its state can referring to the table B.Signal demodulation unit according to picture signal control photoswitch group 4., the color of light that selection can be passed through, through the 5. synthetic color beam that needs of convergence unit, and be presented at optical screen or 7. curtain is gone up, 6. scanning fast of these different colours light beams through scanning element, form the luminous point (pixel) of different colours in the screen relevant position, constitute coloured image.

1. light source can adopt continuously or the white ordinary light source of pulse, also can be continuous or pulse white laser source; 1. light source can be substituted white light source, and can be saved the chromatic dispersion unit 3. by 3 of red, green, blues (or red, orange, yellow, green, blue or green, basket, purple 7) light source; The brightness of luminous point can be tuning by the penetrating rate of light beams such as, red, green, blue white to the control of light source or control; The color saturation of luminous point can be mixed tuning with former luminous point by the beam of white light of synchronous controllable brightness in proportion; 4. the photoswitch group also can establish a, b, c, d, e, f, g switch, controls whether passing through of red, orange, yellow, green, blue, blue, purple light beam respectively, its result such as Table A.

In Fig. 3,1. be the projection microwell array, 2. be micropore, 3. be the scanning angle controller, 4. be correcting unit, 5. be lens or screen, the 6. optical signal controller of forming by photoswitch group and convergent lens.6. the light beam of modulating through optical signal controller, press the instruction map color of demoder, and fixedly be radiated at microwell array projection area 1., microwell array is direction, the speed rotation to set 1., appear at the 3. projection micropore of projection area of scanning angle controller successively, continuous the instruction by demoder of 6. modulating through optical signal controller, 5. the light beam of turn colors is gone up at screen or lens line by line or by row projection scanning, constitute pixel, row or column, frame, form image.Because the light beam that 6. optical signal controller is modulated is the light belt of continual change color, be in the scanning angle controller 3. the projection micropore of projection area be in opening all the time, therefore, be in that row is swept or the row pipeline purging on pel spacing be similar to zero, responsible different rows is swept or the adjacent micropore spacing of row pipeline purging also can be designed as and is similar to zero, be in that different rows is swept or the different lines pipeline purging on neighbor spacing (line space or column pitch) also be similar to zero, scanning enters a new line or changes row and do not have flyback, and the sharpness of image improves greatly.

1. the projection microwell array can be designed to hollow columnar, spherical, or interiorly is made of the high light flux material, and inner bag is the strong reflection material, and responsible row is swept or is listed as and sweeps adjacent micropore sweep span and the 3. corresponding coupling of scanning angle controller; 2. micropore is gone up or correspondence position can be established convergent lens, to reduce the physical area of projecting beam-pixel; It is 1. interior or outer that 3. the scanning angle controller can be located at the projection microwell array; Be to strengthen and strengthen and assemble, also can the projection microwell array 1. in corresponding micropore 2. establish 1 or 1 group and reflect micro mirror; Optical signal controller switching frequency 6. should with the projection microwell array 1. and rotating speed be complementary, can correspondingly produce a pixel to guarantee an optical signal controller change color 6., 4. correcting unit can not established.

If on micropore, establish switch, be used for gated sweep, also can not establish the scanning angle controller 3..In Fig. 4,1. be array of reflective micro-mirrors, 2. be micro mirror, 3. be the scanning angle controller, 4. be correcting unit, 5. be lens or screen, the 6. optical signal controller of forming by photoswitch group and convergent lens.

6. the light beam of modulating through optical signal controller, fixedly be radiated at micro mirror array rotating carrier echo area 1., micro mirror array is direction, the speed rotation to set 1., appear at the reflection micro mirror of array of reflective micro-mirrors echo area 1. successively, 6. 5. the light beam of modulating through optical signal controller is gone up at screen or lens line by line or by the row reflective scan, form pel spacing and be similar to zero high-definition image, 4. correcting unit can not established.

In Fig. 5,1. be convergence units such as reflection micro mirror or micropore, 2. be line feed or change the row catoptron, 3. be scanning reflection mirror, 4. be correcting unit, 5. be lens or screen, the 6. optical signal controller of forming by photoswitch group and convergent lens.

1. assemble by reflection micro mirror or micropore through the light beam that 6. optical signal controller is modulated, and be radiated at the line feed or change the row catoptron and 2. go up, being reflected in scanning reflection mirror more 3. goes up, scanning reflection mirror is 3. by the speed of setting, direction deflection, go to sweep or be listed as and sweep, when needs enter a new line or change row, line feed or change the row catoptron 2. by the angle of setting, speed deflection, scanning reflection mirror is 3. after the backhaul, once more by the speed of setting, direction deflection, or degree and opposite direction are returned to deflection in tempo, carry out that another every trade is swept or other rows of sweeping, and through correcting unit 4., the 5. imaging of lens or screen.

1. reflection micro mirror or micropore can be the arrays of a plurality of reflection micro mirrors or micropore, can establish the convergence lenticule on the micropore, or substitute micropore by lenticule; Enter a new line or change the row catoptron and 2. 3. can be made as the convergence reflex mirror with scanning reflection mirror; Line feed or change the row catoptron 2. can be with the micro mirror forming array of the different a plurality of belt switches of angle, with switch control line feed or change row; 3. scanning reflection mirror can constitute rotation array with the different a plurality of micro mirrors of angle, makes it to finish in rotation scanning; 4. correcting unit can not established; But also can line feed or change the row catoptron 2. 3. make up integrated with scanning reflection mirror or by both deflection line feed, change row, but the catoptron of deflection scanning substitutes again; Also can 1. be located at other position of light path reflecting micro mirror or micropore.

In Fig. 6,1. be reflection micro mirror or the unenhanced array of micropore, 2. be micro mirror or micropore, 3. be rotating shaft.Reflection micro mirror or the unenhanced array of micropore carrier 1. are crawler type or flexible material, make it when swaying, and reflection or projection area are the plane, can realize non-camber line flat scanning, obtain pure flat image.3. rotating shaft can establish several, so that 1. reflection micro mirror or the unenhanced array of micropore obtain more plane, is used for the scanning element of alternate figures 3 and Fig. 4; Reflection micro mirror or the unenhanced arrayed of micropore can be arranged by the requirement among Fig. 3 and Fig. 4; As required, also can add the scanning area controller, to increase number of scanning lines.

In Fig. 3 to Fig. 6, as required, 1. being that the scanning element of core can be made as a plurality of.

Claims (6)

1, a kind of color digital formation method, the color imaging method of employing reflective scan is through modulating the light beam of continuous turn colors, by the regular movement of catoptron, with its reflective scan imaging; Adopt the color imaging method of projection scanning, through modulating the light beam of continuous turn colors, regular movement by projection hole, mirror, with its projection scanning imagery, it is characterized in that: be used for the catoptron of colour imaging or projection hole, mirror and be arranged in array, be controlled to the catoptron of picture or projection hole, mirror is made regular movement by direction, speed, the angle of scanning requirement by the order of scanning.

2, according to the described catoptron of claim 1 or projection hole, lens array, it is characterized in that: be used for the catoptron of colour imaging or projection hole, lens array is arranged balling-up or column with oblique line, or arranged with oblique line on ball or column.

3. according to the described catoptron of claim 1 or projection hole, lens array, it is characterized in that: be used for the catoptron of colour imaging or projection hole, lens array is arranged in shoe shoestring, or arrange carrying out on the shoestring.

4, according to claim 1,2,3 described color imaging methods, it is characterized in that:, make catoptron or projection hole, mirror direction, uniform speed rotation by the requirement of scanning by control.

5, the color imaging method according to claim 1 is characterized in that: entering a new line or changing is listed as reflection, projecting mirror one by one to entering a new line or changing column direction to spend deflection less than 1.

6, according to claim 1,5 described color imaging methods, it is characterized in that: scanning reflection mirror or projecting mirror, with whole process less than 90 degree to direction of scanning deflection.

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