CN105278161A - Vehicle-mounted HUD uniform light illumination system - Google Patents
Vehicle-mounted HUD uniform light illumination system Download PDFInfo
- Publication number
- CN105278161A CN105278161A CN201510762072.4A CN201510762072A CN105278161A CN 105278161 A CN105278161 A CN 105278161A CN 201510762072 A CN201510762072 A CN 201510762072A CN 105278161 A CN105278161 A CN 105278161A
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- Prior art keywords
- led
- light
- display screen
- base
- compound parabolic
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
Abstract
The invention relates to a vehicle-mounted HUD uniform light illumination system, which comprises an LED (1), an LED base (2), a base fixation screw (3), an LED lens (4), a light hood (5), a liquid crystal display screen (6) and a display screen fixing device (7). The liquid crystal display screen (6) is fixed on the display screen fixing device (7). The light hood (5) is arranged between the display screen fixing device (7) and the LED base (2). The LED (1) is adhered onto the LED base (2). The LED base (2) is connected with the base fixation screw (3). The light-emitting surface of the LED (1) is connected with the LED lens (4). The LED lens (4) comprises a compound parabolic concentrator (9), a secondary curved surface (10) and a square spherical array (11). The square spherical array (11) is arranged on the outer surface of the light outlet of the LED lens (4). According to the technical scheme of the invention, emergent light spots are ensured to be uniformly distributed on the liquid crystal display screen, and the overall illuminance is improved. Meanwhile, the illumination system is simplified. The material and the cost are saved.
Description
[technical field]
The present invention relates to Vehicular illumination system technical field, specifically the even lighting system of a kind of vehicle-mounted HUD.
[background technology]
Vehicle-mounted head-up display (HUD) can make driver avoid notice to interrupt or lose the grasp to state consciousness, adds traffic safety.HUD has higher brightness requirement to the image that human eye observes, the reflected energy of adding in imaging system loses and the larger transmission potential of LCDs loses, and this just requires that HUD illuminator has the higher efficiency of light energy utilization.HUD adopts light emitting diode (LED) to be lighting source, for reaching its brightness requirement, plurality of LEDs need be used to throw light on simultaneously, and the homogeneity of illumination has a significant impact picture contrast.High-contrast image not only can improve Consumer's Experience, also can promote traffic safety simultaneously.Therefore, HUD illuminator not only needs to have the higher efficiency of light energy utilization, needs to have higher illumination uniformity simultaneously.
The light source that HUD adopts is light emitting diode (LED) area source, its characteristics of luminescence is Lambertian radiation, light-emitting area and lighting angle are comparatively large, and obtain the energy in LCDs and even angle illumination if want, then illuminator should have good optically focused and even light effect.And LED light source works under nominal power and can distribute higher heat, too much operating time can cause the damage of some optical component.Therefore, if the even lighting system of a kind of vehicle-mounted HUD can be provided, make LED light source can not meet brightness requirement needed for final image under nominal power, thus effectively reduce thermal value, reduce the volume of heat radiator, and then reduce the size of whole HUD device, will have very important significance.
[summary of the invention]
Object of the present invention is exactly will solve above-mentioned deficiency and provide the even lighting system of a kind of vehicle-mounted HUD, can ensure that emergent light spot is evenly distributed in LCDs, increases overall illuminance, and simplifies illuminator, save material and cost.
Design the even lighting system of a kind of vehicle-mounted HUD for achieving the above object, comprise LED1, LED base 2, base gib screw 3, LED lens 4, lampshade 5, LCDs 6 and display screen stationary installation 7, described LCDs 6 is fixed in display screen stationary installation 7, lampshade 5 is provided with between described display screen stationary installation 7 and LED base 2, described LED1 is bonded on LED base 2, described LED base 2 is connected with base gib screw 3, the light-emitting area of described LED1 is connected with LED lens 4, described LED lens 4 comprise compound parabolic concentrator 9, quadric surface 10 and square array sphere 11, it is inner that described quadric surface 10 is formed at compound parabolic concentrator 9, described square array sphere 11 is positioned at the light-emitting window outside surface of LED lens 4.
Described compound parabolic concentrator 9 is composited by the para-curve that two are tilted, the rounded paraboloid structure of described compound parabolic concentrator 9, the high angle scattered light that described compound parabolic concentrator 9 sends for collecting LED area light source, described quadric surface 10 is by being formed at the inner borehole of compound parabolic concentrator 9, described quadric surface 10 carries out transmission convergence for low-angle light LED area light source sent, and described square array sphere 11 is for carrying out dodging to the emergent light through compound parabolic concentrator 9 and quadric surface 10.
The inlet calibre of described LED lens 4 aligns with LED1 light-emitting area, aligns with the entrance center of the compound parabolic concentrator 9 of LED lens 4 in the center of described LED1.
Described LCDs 6 is fixed in display screen stationary installation 7 by display screen gib screw 8.
The present invention compared with the existing technology, novel structure, reasonable in design, by connecting LED lens at LED light-emitting area, these LED lens comprise compound parabolic concentrator, quadric surface and square array sphere, the light of wide-angle that compound parabolic concentrator is used for LED area light source to send is as much as possible to be collected, form the emergent ray of the special angle met the demands, the low-angle light that quadric surface is used for LED area light source to send carries out transmission convergence, square array sphere is positioned at the light-emitting window outside surface of LED lens, for carrying out dodging to light, to ensure that emergent light spot is evenly distributed in the LCDs of rectangle, and the illuminance of entirety can increase, it is relative to the even light of traditional increase array mirror again, not only simplify illuminator, and save material and cost, be worthy of popularization.
[accompanying drawing explanation]
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of LED lens in the present invention;
Fig. 3 is the simulation index path in the embodiment of the present invention;
In figure: 1, LED2, LED base 3, base gib screw 4, LED lens 5, lampshade 6, LCDs 7, display screen stationary installation 8, display screen gib screw 9, compound parabolic concentrator 10, quadric surface 11, square array sphere 12, LED area light source 13, LED lens 2 14, detector.
[embodiment]
Below in conjunction with accompanying drawing, following further illustrating is done to the present invention:
As shown in drawings, the present invention includes: LED1, LED base 2, base gib screw 3, LED lens 4, lampshade 5, LCDs 6 and display screen stationary installation 7, LCDs 6 is fixed in display screen stationary installation 7 by display screen gib screw 8, lampshade 5 is provided with between display screen stationary installation 7 and LED base 2, LED1 is bonded on LED base 2, LED base 2 is connected with base gib screw 3, the light-emitting area of LED1 is connected with LED lens 4, LED lens 4 comprise compound parabolic concentrator 9, quadric surface 10 and square array sphere 11, it is inner that quadric surface 10 is formed at compound parabolic concentrator 9, square array sphere 11 is positioned at the light-emitting window outside surface of LED lens 4.Wherein, compound parabolic concentrator 9 is composited by the para-curve that two are tilted, the rounded paraboloid structure of compound parabolic concentrator 9, the high angle scattered light that compound parabolic concentrator 9 sends for collecting LED area light source, quadric surface 10 is by being formed at the inner borehole of compound parabolic concentrator 9, quadric surface 10 carries out transmission convergence for low-angle light LED area light source sent, and square array sphere 11 is for carrying out dodging to the emergent light through compound parabolic concentrator 9 and quadric surface 10; The inlet calibre of LED lens 4 aligns with LED1 light-emitting area, aligns with the entrance center of the compound parabolic concentrator 9 of LED lens 4 in the center of LED1.
Vehicle-mounted HUD illuminator of the present invention, its structure comprises LED 1, LED base 2, base gib screw 3, LED lens 4, lampshade 5, LCDs 6, display screen stationary installation 7 and display screen gib screw 8, LED is bonded on LED base, and base gib screw is used for LED to be fixed on HUD relevant position.
The invention provides a kind of LED lens based on compound parabolic concentrator (CPC), good homogeneity and higher capacity usage ratio can be obtained while controlling beam angle exactly, its structure as shown in Figure 2, comprises compound parabolic concentrator, quadric surface and square array sphere.Wherein, the light of wide-angle that compound parabolic concentrator is used for LED area light source to send is as much as possible to be collected, form the emergent ray of the special angle met the demands, this CPC is composited by two para-curves tilted, it is the device of the low degree of focus of a kind of non-imaged, ray-collecting in angular region can be accepted on receiver by specific, be applied to the convergence of directional light more.Quadric surface is positioned at LED area light source a distance, its effect is that low-angle light LED area light source sent carries out transmission convergence, because the length of CPC limits, the low-angle light that LED area light source sends can not reflect through CPC, therefore need, by inner for CPC borehole, to adopt quadric surface to carry out reflecting this some light.Square array sphere is positioned at the light-emitting window outside surface of whole LED lens, LED area light source is through CPC and quadric surface, although meet angle requirement as much as possible, but CPC structure is circular parabola, its emergent light spot is circular, the words of illuminated liquid crystal display screen are superposed if directly carry out, then can cause cross section and the uneven phenomenon of LCDs edge light, therefore adopt square array sphere to carry out dodging, thus can ensure that emergent light spot is evenly distributed in the LCDs of rectangle, and the illuminance of entirety can increase, and square array sphere directly and CPC and quadric surface be combined into integral LED lens, relative to the even light of traditional increase array mirror again, simplify illuminator, save material and cost.
As shown in Figure 3, be the simulation index path of the vehicle-mounted HUD illuminator in the embodiment of the present invention.Wherein, LED area light source 12 adopts the LUWCEUN.CE light source of Oslan company, is alignd by the inlet calibre of LED lens 2 13 with LED area light source light-emitting area, aligns with the CPC entrance center of LED lens two in the center of light source chip; Ray Tracing Simulation of Volume Scattering is carried out at 34mm place, distance surface source luminescence surface detector 14.In the present embodiment, the size of LED area light source 12 is 1.6 × 1.2mm, the size of LED lens two is 40 × 20mm, after the illuminator in the present embodiment, can ensure that the capacity usage ratio within the scope of illuminated area 42 × 22mm is 88%, and be evenly distributed, the efficient uniform illumination met the demands namely can be obtained in LCDs.Illuminator rising angle in the present embodiment is full-shape 14 °.
The present invention, by the restriction of above-mentioned embodiment, change, the modification done, substitutes, combines, simplifies under other any does not deviate from Spirit Essence of the present invention and principle, all should be equivalent substitute mode, is included within protection scope of the present invention.
Claims (4)
1. the even lighting system of vehicle-mounted HUD, it is characterized in that: comprise LED (1), LED base (2), base gib screw (3), LED lens (4), lampshade (5), LCDs (6) and display screen stationary installation (7), described LCDs (6) is fixed in display screen stationary installation (7), lampshade (5) is provided with between described display screen stationary installation (7) and LED base (2), described LED (1) is bonded on LED base (2), described LED base (2) is connected with base gib screw (3), the light-emitting area of described LED (1) is connected with LED lens (4), described LED lens (4) comprise compound parabolic concentrator (9), quadric surface (10) and square array sphere (11), it is inner that described quadric surface (10) is formed at compound parabolic concentrator (9), described square array sphere (11) is positioned at the light-emitting window outside surface of LED lens (4).
2. the even lighting system of vehicle-mounted HUD as claimed in claim 1, it is characterized in that: described compound parabolic concentrator (9) is composited by the para-curve that two are tilted, described compound parabolic concentrator (9) rounded paraboloid structure, the high angle scattered light that described compound parabolic concentrator (9) sends for collecting LED area light source, described quadric surface (10) is by being formed at compound parabolic concentrator (9) inner borehole, described quadric surface (10) carries out transmission convergence for low-angle light LED area light source sent, described square array sphere (11) is for carrying out dodging to the emergent light through compound parabolic concentrator (9) and quadric surface (10).
3. the even lighting system of vehicle-mounted HUD as claimed in claim 2, it is characterized in that: the inlet calibre of described LED lens (4) aligns with LED (1) light-emitting area, aligns with the entrance center of the compound parabolic concentrator (9) of LED lens (4) in the center of described LED (1).
4. the even lighting system of vehicle-mounted HUD as described in claim 1,2 or 3, is characterized in that: described LCDs (6) is fixed in display screen stationary installation (7) by display screen gib screw (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510762072.4A CN105278161A (en) | 2015-11-10 | 2015-11-10 | Vehicle-mounted HUD uniform light illumination system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510762072.4A CN105278161A (en) | 2015-11-10 | 2015-11-10 | Vehicle-mounted HUD uniform light illumination system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105278161A true CN105278161A (en) | 2016-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510762072.4A Pending CN105278161A (en) | 2015-11-10 | 2015-11-10 | Vehicle-mounted HUD uniform light illumination system |
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| CN (1) | CN105278161A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018130214A1 (en) * | 2017-01-13 | 2018-07-19 | 矽创电子股份有限公司 | Backlight device |
| CN110426849A (en) * | 2019-06-26 | 2019-11-08 | 华为技术有限公司 | A kind of optical projection system and augmented reality device |
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| CN102549493A (en) * | 2009-09-15 | 2012-07-04 | 3M创新有限公司 | Led projector and method |
| CN102606978A (en) * | 2012-02-27 | 2012-07-25 | 广东工业大学 | Device and method for implementing smallest output beam angle of LED light source |
| CN204358586U (en) * | 2014-12-25 | 2015-05-27 | 惠州比亚迪电池有限公司 | A kind of novel new line display instrument and light-source system thereof |
| CN104827967A (en) * | 2014-02-07 | 2015-08-12 | Lg电子株式会社 | Head-up display apparatus |
| CN205121115U (en) * | 2015-11-10 | 2016-03-30 | 望新（上海）科技有限公司 | Even light lighting system of on -vehicle HUD |
-
2015
- 2015-11-10 CN CN201510762072.4A patent/CN105278161A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101493210A (en) * | 2009-01-20 | 2009-07-29 | 清华大学 | Light source structure based on LED |
| CN102549493A (en) * | 2009-09-15 | 2012-07-04 | 3M创新有限公司 | Led projector and method |
| CN102606978A (en) * | 2012-02-27 | 2012-07-25 | 广东工业大学 | Device and method for implementing smallest output beam angle of LED light source |
| CN104827967A (en) * | 2014-02-07 | 2015-08-12 | Lg电子株式会社 | Head-up display apparatus |
| CN204358586U (en) * | 2014-12-25 | 2015-05-27 | 惠州比亚迪电池有限公司 | A kind of novel new line display instrument and light-source system thereof |
| CN205121115U (en) * | 2015-11-10 | 2016-03-30 | 望新（上海）科技有限公司 | Even light lighting system of on -vehicle HUD |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018130214A1 (en) * | 2017-01-13 | 2018-07-19 | 矽创电子股份有限公司 | Backlight device |
| CN108302381A (en) * | 2017-01-13 | 2018-07-20 | 矽创电子股份有限公司 | Back lighting device |
| US10754155B2 (en) | 2017-01-13 | 2020-08-25 | Sitronix Technology Corp. | Backlight device |
| CN110426849A (en) * | 2019-06-26 | 2019-11-08 | 华为技术有限公司 | A kind of optical projection system and augmented reality device |
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Application publication date: 20160127 |
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