CN102213902A - Energy-saving display system based on binary optics - Google Patents
Energy-saving display system based on binary optics Download PDFInfo
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- CN102213902A CN102213902A CN2011101461730A CN201110146173A CN102213902A CN 102213902 A CN102213902 A CN 102213902A CN 2011101461730 A CN2011101461730 A CN 2011101461730A CN 201110146173 A CN201110146173 A CN 201110146173A CN 102213902 A CN102213902 A CN 102213902A
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Abstract
The invention relates to an energy-saving display system based on binary optics, comprising a display unit, an optical unit, a projection screen and an adjusting device, wherein the display unit is used for transmitting an image to the optical unit; the optical unit is used for projecting an optical signal of the image to the projection screen; the projection screen is used for directionally reflecting the optical signal of the image to double eyes of a viewer to be imaged; and the adjusting device is used for adjusting the projection direction and the projection position of the optical signal of the image of the optical unit. The energy-saving display system has the advantages of reduced display energy consumption, simple structure, low cost, and the like.
Description
Technical field
The invention belongs to green energy conservation type display technique, be specifically related to a kind of energy-saving display system based on binary optical.
Background technology
Display technique is a part inseparable in people's daily life.The investigation of doing in March, 2010 according to Acnielsen Ltd. shows that it is 2 hours 36 minutes that Chinese residents is watched the time of TV average every day; The investigation result that Boston Consulting Group was announced in July, 2010 shows, Chinese netizen total duration of surfing the Net every day is 1,000,000,000 hours.And see TV, activity such as the office of surfing the Net, use a computer uses televisor all essentially or display shows.According to above-mentioned data, and with 3 people, one family, 40 cun liquid crystal TV sets (LCD televisor that common CCFL is backlight of each household, 180 watts of average energy consumptions/time), every computing machine uses 19 cun LCD display (average energy consumption 25 watts/time) to be reference, can estimate the energy consumption that China's 1,300,000,000 populations spend in the demonstration every day and be about 300,000,000 kilowatt hours, greater than the generated energy (1,820 ten thousand kilowatts of installed capacitys, average daily generated energy 2.6 hundred million kilowatt hours) in power station, Three Gorges.If can improve, significantly save the energy consumption that shows China's energy-saving and emission-reduction work is had very big benifit existing display technique.
At present, traditional display technique of using in seeing TV, online, office belongs to several general orientation of CRT, liquid crystal and Plasma Display substantially.These technology all are to allow the light of carry image information freely propagate in whole space, display screen the place ahead, and the observer has only received corresponding to the light on the glasses solid angle direction, and the light of remainder has then been wasted.
Show the very high LED TV of present energy-saving efficiency according to statistics, being used for the 2/3(that power consumption backlight is about total power consumption is example with LG42SL90QD, standard-sized sheet backlight power consumption 151W, complete shut-down backlight power consumption 54W), adopt traditional C CFL LCD TV backlight, its backlight power consumption is higher more than 1 times than LED TV.And the overall power of traditional CRT, rear-projection and plasma display device is also higher than traditional C CFL TV backlight.Obviously, the power consumption of saving backlight plays conclusive effect to display technique energy-conservation.
As shown in Figure 1, the light that certain pixel sends on display or the televisor 1 probably can cover the interval in the 2 π solid angles of the place ahead, and it is useful to have only the light that throws observer's eyes to be only for observer in these light, i.e. the part of θ 1 and θ 2 among the figure.Light on all the other angles for whole procedure for displaying without any the contribution.Situation with family expenses is an example, when spectators watch 42 cun TVs outside 3 meters viewing distance, only has 1.42% light (42 cun about 170 degree in LCD TV visual angles) effective to spectators, and remainder is then because can't be watched by spectators and be wasted.
In sum, if can save the light that can't enter eyes, the light that screen is sent enters observer's eyes just, can realize the display effect identical like this with traditional display modes, but the utilization ratio of luminous energy is greatly improved, and then reducing energy consumption in the procedure for displaying to a great extent, this will provide greatest help to daily energy-conserving and environment-protective work.The present invention just is based on this starting point and has designed that to adopt binary optical with a cover be the directed energy-saving display technique of core technology.
Summary of the invention
The objective of the invention is to overcome the above problems and provide a kind of the reduction to show energy consumption, the energy-saving display system based on binary optical simple in structure, with low cost.
From the purpose of the invention described above as seen, under identical environment people to watch the brightness of image the most comfortable be basic fixed.If can change existing casual emission or the scattering working method that shows, on guaranteeing that human eye is to image vision brightness basis of invariable, the image light signals directional transmissions of screen display is arrived spectators' eyes, and do not propagate image light signals on all the other directions, just can save energy consumption backlight when showing efficiently, realize energy-conservation demonstration.This mode is adapted at family expenses and the office occasion is used.The present invention has adopted binary optical device as critical component, both can reduce core component---the thickness of projection screen, and have cheapness again and can adopt the mode benefitss of large-scale production such as photoetching, electronics etching, pressing mold, be convenient to promote.
For achieving the above object, technical scheme of the present invention is: a kind of energy-saving display system based on binary optical, it comprises display unit, optical unit, projection screen and regulating device, the display unit images is to optical unit, optical unit projects to projection screen with image light signals, to spectators' eyes place imaging, regulating device is used to regulate the projecting direction and the projected position of the image light signals of optical unit to projection screen with the image light signals orienting reflex.
Projection screen comprises support and is located at Fresnel Lenses, catoptron, mechanical adjustment structure on the support, Fresnel Lenses and catoptron be arranged in parallel, the mechanical adjustment structure is used for the distance between accommodation reflex mirror and the Fresnel Lenses, image light signals is from the place ahead incident of Fresnel Lenses, see through the surface reflection of Fresnel Lenses, pass through outgoing behind the Fresnel Lenses again at catoptron.
Catoptron is plane, sphere or non-spherical reflector; This optical unit also comprises the colour killing astigmatism element that is used to reduce chromatic dispersion.
This regulating device comprises guide rail, be located at the The Cloud Terrace on the guide rail and be used to control the motor of The Cloud Terrace rotational angle, and this optical unit is located on the The Cloud Terrace.
This regulating device also comprises the focusing ring of being located at the optical unit place and is used to control the motor of focusing ring that focusing ring is used to change the position of focal plane of optical unit.
Display unit is made of lighting source and image display device, and image display device is DMD, SLM or LCOS.Optical unit is a projection lens.
Compared with prior art, the present invention has following beneficial effect:
The present invention utilizes the core component of binary optical elements as display screen, and cooperate the optical unit of respective design to realize controlling to the image light signals direction of propagation, make the light signal of image only project in the scope of spectators' binocular, the not propagation of luminous energy on all the other directions, both guaranteeing that spectators can watch image, when reaching the purpose of demonstration, greatly reducing needed backlight power when showing again, correspondingly can reduce the energy consumption of demonstration, realize energy-conservation.
Description of drawings
Fig. 1 is the fundamental diagram of the display device of prior art;
Fig. 2 is the energy-saving display system schematic diagram based on binary optical of the present invention;
Fig. 3 is the structural representation of projection screen;
Fig. 4 is the control principle figure of image projection direction (laterally);
Fig. 5 is the control principle figure of image (axial direction) focal plane.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in detail.
The present invention utilizes projection as the demonstration means, and in conjunction with the energy-saving display technique of binary optical device as image light signals directional transmissions Primary Component.At present, the demonstration means of main flow such as CRT, rear-projection demonstration, liquid crystal display, Plasma Display etc. all are the displaying schemes of diffuse reflection type, be to propagate in the space of image light signals in the 2 π solid angles of screen the place ahead, but the part that all only enters spectators' eyes in the luminous energy of transmission could work to spectators, and all the other most luminous energies have not been wasted because enter spectators' eyes.If as seen the energy control chart is as the direction of optical signal transmission, the eyes that only can enter spectators just just can reduce needed luminous energy when showing, correspondingly can reduce the energy consumption of demonstration, realize energy-conservation.
Therefore, we have designed a kind of on the projection basis, utilize binary optical device as critical component, and in conjunction with corresponding light path system, realize the image light signals directional transmissions sent by DMD, LCOS or the SLM eyes to spectators.Because only need few energy when human eye is watched image, so this system can reduce the power consumption of demonstration to a great extent.
Thus, the invention discloses a kind of energy-saving display system based on binary optical, extremely shown in Figure 5 as Fig. 2, it comprises display unit, optical unit, projection screen and regulating device, the display unit images is to optical unit, optical unit projects to projection screen with image light signals, and to spectators' eyes place imaging, regulating device is used to regulate the projecting direction and the projected position of the image light signals of optical unit to projection screen with the image light signals orienting reflex.The optical parametric of optical unit and projection screen and the distance between them are carried out matching Design, can allow image light signals project to spectators' eyes place imaging, and the size of picture is lucky and the consistent size of binocular, or the size of slightly about binocular, the tolerance of certain visual range can be arranged like this.
As shown in Figure 3, projection screen comprises support 8 and is located at Fresnel Lenses 2, catoptron 3, mechanical adjustment structure 4 on the support 8, Fresnel Lenses 2 be arranged in parallel with catoptron 3, mechanical adjustment structure 4 is used for the distance between accommodation reflex mirror 3 and the Fresnel Lenses 2, image light signals is from the place ahead incident of Fresnel Lenses 2, see through the surface reflection of Fresnel Lenses 2, pass through Fresnel Lenses 2 back outgoing again at catoptron 3.Further, catoptron 3 is plane mirror or spherical reflector.Wherein, the focal length of Fresnel Lenses 2 and catoptron 3 needs to be complementary with the parameter of optical unit.Because screen has used Fresnel Lenses, so thickness can be slightly thinner than present common liquid crystals TV or display.
Further,, can introduce certain chromatic dispersion,, reduce chromatic dispersion so in optical unit, can optimize the Fresnel Lenses coupling that adds in colour killing astigmatism element and the projection screen because projection screen uses the cause of Fresnel Lenses.
As shown in Figure 4, this regulating device comprises guide rail 6, be located at the The Cloud Terrace 5 on the guide rail 6 and be used to control the motor of The Cloud Terrace 5 rotational angles, and this optical unit is located on the The Cloud Terrace 5.The Cloud Terrace 5 can move on guide rail 6, and The Cloud Terrace 5 is by the Electric Machine Control corner.The mobile control that can realize projecting direction on guide rail 6 of the change of corner and The Cloud Terrace 5, the direction of investing human eye just.
As shown in Figure 5, this regulating device also comprises the focusing ring of being located at the optical unit place and is used to control the motor of focusing ring that focusing ring is used to change the position of focal plane of optical unit.Spectators' change in location is except horizontal moving, and spectators also can change apart from the position of screen.Want spectators and need regulate focusing ring on the optical unit can both seeing image on any distance clearly.This adjusting ring can rotate by motor, realizes the change of optical unit position of focal plane, makes viewer's location change howsoever and can both see distinct image.
Further, display unit is made of lighting source and image display device 7, and image display device 7 is DMD, SLM or LCOS.
Claims (8)
1. energy-saving display system based on binary optical, it is characterized in that, comprise display unit, optical unit, projection screen and regulating device, the display unit images is to optical unit, optical unit projects to projection screen with image light signals, to spectators' eyes place imaging, regulating device is used to regulate the projecting direction and the projected position of the image light signals of optical unit to projection screen with the image light signals orienting reflex.
2. the energy-saving display system based on binary optical according to claim 1, it is characterized in that: projection screen comprises support and is located at Fresnel Lenses, catoptron, mechanical adjustment structure on the support, Fresnel Lenses and catoptron be arranged in parallel, the mechanical adjustment structure is used for the distance between accommodation reflex mirror and the Fresnel Lenses, image light signals is from the place ahead incident of Fresnel Lenses, see through the surface reflection of Fresnel Lenses, pass through outgoing behind the Fresnel Lenses again at catoptron.
3. the energy-saving display system based on binary optical according to claim 2 is characterized in that: catoptron is plane, sphere or non-spherical reflector.
4. the energy-saving display system based on binary optical according to claim 2 is characterized in that: this optical unit also comprises the colour killing astigmatism element that is used to reduce chromatic dispersion.
5. the energy-saving display system based on binary optical according to claim 1 is characterized in that: this regulating device comprises guide rail, be located at the The Cloud Terrace on the guide rail and be used to control the motor of The Cloud Terrace rotational angle, and this optical unit is located on the The Cloud Terrace.
6. the energy-saving display system based on binary optical according to claim 5 is characterized in that: this regulating device also comprises the focusing ring of being located at the optical unit place and is used to control the motor of focusing ring that focusing ring is used to change the position of focal plane of optical unit.
7. the energy-saving display system based on binary optical according to claim 1, it is characterized in that: display unit is made of lighting source and image display device, and image display device is DMD, SLM or LCOS.
8. the energy-saving display system based on binary optical according to claim 1 is characterized in that: optical unit is a projection lens.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101461730A CN102213902A (en) | 2011-06-01 | 2011-06-01 | Energy-saving display system based on binary optics |
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| CN2011101461730A CN102213902A (en) | 2011-06-01 | 2011-06-01 | Energy-saving display system based on binary optics |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106797416A (en) * | 2016-10-31 | 2017-05-31 | 北京小米移动软件有限公司 | Screen control method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1485646A (en) * | 2002-08-09 | 2004-03-31 | 奥林巴斯株式会社 | Method of controlling brightness of user-selected area for image desplay device |
| CN101030027A (en) * | 2007-04-10 | 2007-09-05 | 苏州苏大维格数码光学有限公司 | Projection screen with holographic cylindrical lens structure |
| JP2010224129A (en) * | 2009-03-23 | 2010-10-07 | Sharp Corp | Stereoscopic image display device |
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- 2011-06-01 CN CN2011101461730A patent/CN102213902A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1485646A (en) * | 2002-08-09 | 2004-03-31 | 奥林巴斯株式会社 | Method of controlling brightness of user-selected area for image desplay device |
| CN101030027A (en) * | 2007-04-10 | 2007-09-05 | 苏州苏大维格数码光学有限公司 | Projection screen with holographic cylindrical lens structure |
| JP2010224129A (en) * | 2009-03-23 | 2010-10-07 | Sharp Corp | Stereoscopic image display device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106797416A (en) * | 2016-10-31 | 2017-05-31 | 北京小米移动软件有限公司 | Screen control method and device |
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Application publication date: 20111012 |