CN101256285A - Refraction-diffraction mixed optical system as well as helmet display using the same - Google Patents
Refraction-diffraction mixed optical system as well as helmet display using the same Download PDFInfo
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- CN101256285A CN101256285A CNA2007103025424A CN200710302542A CN101256285A CN 101256285 A CN101256285 A CN 101256285A CN A2007103025424 A CNA2007103025424 A CN A2007103025424A CN 200710302542 A CN200710302542 A CN 200710302542A CN 101256285 A CN101256285 A CN 101256285A
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Abstract
The invention relates to a refraction and diffraction mixing optical system and head mounted display using the said system. The system comprises an organic electroluminescent display on the focal plane along the direction of optical axle. The light from the organic electroluminescent display passes through a refraction and diffraction mixing lens with binary optical elements on the plane of plano-convex lens and enters into a rectangle reflecting prism and passes through lens after reflecting, and forms enlarged virtual image at exit pupil. A lens with a certain magnification ratio is mounted between the rectangle reflecting prism and exit pupil and reduces the focus of the whole optical system, namely increases the field angle of the system, therefore the whole menu is greatly magnified. The binary optical elements are provided in the system. The system has simple structure and implement color display with a certain magnification ratio and can effectively adjust the aberration and increase the image quality.
Description
Technical field
The present invention relates to technical field of optical, particularly the soldier reduces the optical technology of volume and weight, raising picture element with Helmet Mounted Display.
Background technology
In modernized war, various military equipments, facility have all been proposed to adapt to the requirement modernized war needs, strict more.For adapting to this variation and improving army's lethality, maneuverability and viability, countries in the world have been risen the tide of exploitation soldier combat system.The optical system of prior art soldier's Helmet Mounted Display (HMD) has dual mode: as shown in Figure 1 a kind of, adopt traditional Zeiss eyepiece; Image in the display of organic electroluminescence (OLED) 9 amplifies through lens 10,11, and human eye is observed the virtual image through amplifying at emergent pupil 8 places.Another kind as shown in Figure 2, through beam splitter 15 reflection directive concave mirrors 13, the light transmission beam splitter 15 from concave mirror 13 reflections enters emergent pupil 8 (human eye) to the rays pass through lens 12 of the image in the display of organic electroluminescence 14 at last again.In Helmet Mounted Display (HMD) field, the wearer wishes its energy color display, and bigger field angle and exit pupil diameter and smaller volume and weight are arranged.For existing technology, increase the volume and weight that optical system field angle and exit pupil diameter just must increase system, this is the contradiction that can not solve.In addition for realizing colored the demonstration that optical system just has to introduce the balsaming lens that refractive index different optical material is formed, thereby further increases system bulk and weight.And existing optical technology has deficiency at aspects such as aberration correction, image amplification and raising picture elements.
Summary of the invention
The technical problem to be solved in the present invention is exactly at above the deficiencies in the prior art, and design a kind of simple in structure realizes colored the demonstration, has certain magnification, effectively aberration correction improves picture element, the refraction/diffraction mixed optical system of the Helmet Mounted Display that suitable soldier uses.
The solution of the technology of the present invention is:
A kind of refraction/diffraction mixed optical system comprises successively along its optical axis direction: active display, refraction diffraction hybrid lens makes the reverberator and the lens of 90 ° of light deflections.
Wherein, described active display is a display of organic electroluminescence; Described refraction diffraction hybrid lens has binary optical elements to place on the plane of plano-convex lens, and this binary optical elements is 8 step embossment structures; Described reverberator is right-angle reflecting prism or total reflection prism; Described lens are the lens with certain focal power and magnification.
Described refraction/diffraction mixed optical system, be preferably, comprise along its optical axis direction: be located at the display of organic electroluminescence on the focal plane, its light that sends is provided with the refraction diffraction hybrid lens of binary optical elements through the plane of plano-convex lens, enter right-angle reflecting prism, scioptics form the amplification virtual image at the emergent pupil place after reflection; After promptly the light that is sent by display of organic electroluminescence passes through refraction diffraction hybrid lens, enter right-angle reflecting prism, the rays pass through lens through reflection enters emergent pupil or human eye.
Refraction/diffraction mixed optical of the present invention system is specially adapted to the display of modern soldier's helmet, in the display of soldier's helmet, its optical system comprises successively along optical axis direction: display of organic electroluminescence, refraction diffraction hybrid lens, right-angle reflecting prism and lens, the light that sends by display of organic electroluminescence by refraction diffraction hybrid lens after, enter right-angle reflecting prism, light through reflection sees through lens, enters human eye.
In addition, this display also has the shell of a protection inner structure, and a helmet hanging part that is connected with the helmet.
Improve the method for picture element in the helmet display optical system, at first be located at the light that display of organic electroluminescence sent on the focal plane, through folding hybrid lens and the right-angle prism reflection of spreading out, observe into the amplification virtual image by the emergent pupil place, between right-angle reflecting prism and emergent pupil, be provided with lens.Secondly described being in is provided with the folding hybrid lens that spreads out between display of organic electroluminescence on the focal plane and the right-angle reflecting prism.In order to make the helmet display optical system volume-diminished, adopted right-angle reflecting prism to fold light in addition.
Technological merit of the present invention is simple in structure, realizes colored demonstration, has certain magnification, and effectively aberration correction improves picture element.
Description of drawings
Fig. 1: the optical principle synoptic diagram of one of prior art;
Fig. 2: two optical principle synoptic diagram of prior art;
Fig. 3: principle of the invention synoptic diagram;
Fig. 4: Helmet Mounted Display and soldier's helmet assembled construction synoptic diagram that the present invention forms;
Fig. 5: the embossment structure synoptic diagram of binary optical elements.
Reference numeral is explained:
Fig. 1: 8-emergent pupil/human eye, 9-display of organic electroluminescence, 10-lens one, 11-lens two;
Fig. 2: 8-emergent pupil/human eye, 12-lens three, 13-concave mirror, 14-display of organic electroluminescence, 15-beam splitter;
Fig. 3: 3 '-display of organic electroluminescence, 5 '-folding hybrid lens that spreads out, 6 '-right-angle reflecting prism, 7 '-lens, 8-emergent pupil/human eye;
Fig. 4: the 1-soldier helmet, the 2-hanging part, the 3-display of organic electroluminescence, the 4-package casing, 5-rolls over the hybrid lens that spreads out, 6-right-angle reflecting prism, 7-lens, 8-emergent pupil/human eye.
Embodiment
Because HMD is a kind of being installed on the helmet as shown in Figure 4, and the visual optical system of the comfortable amplification virtual image is provided for the wearer.Usually it is little, in light weight to wish that it has bigger field angle and color display capabilities and volume.In conventional optical systems (as depicted in figs. 1 and 2), very difficult realization not only increases field angle, the colored demonstration of realization but also can reduce the optical system volume and weight, because realize colored the demonstration for traditional optical system, just must introduce the balsaming lens correcting chromatic aberration that the different optical material of refractive index is formed, cause optical system weight to increase.And, have to increase the optical system bore in order to increase the focal length (reducing the radius of concave mirror) that field angle will reduce optical system, cause system bulk to increase.Design optical system as shown in Figure 3 for this reason, between right-angle reflecting prism and emergent pupil, increased the lens that a slice has certain focal power.These lens can improve the performance of optical system, make guaranteeing under the prerequisite that the optical system bore does not increase, by reducing the purpose that the optical system focal length reaches increases optical system field angle and exit pupil diameter.In addition, these lens can also play anaberration, improve picture element.
Soldier's helmet display optical system of the present invention is shown in Fig. 3,4: 3 or 3 ' is display of organic electroluminescence (OLED); 5 or 5 ' is to roll over the hybrid lens that spreads out; 6 or 6 ' is right-angle reflecting prism; 7 or 7 ' is lens; The 8th, emergent pupil (being the position that human eye is placed), the 4th, the package casing of helmet display optical system; The 2nd, the hanging part of Helmet Mounted Display.In this optical system, display of organic electroluminescence 3 or 3 ' is on the focal plane of optical system, its light that sends spreads out by folding behind hybrid lens 5 or 5 ', enter right-angle reflecting prism 6 or 6 ', light from right-angle reflecting prism 6 or 6 ' reflection, see through lens 7 or 7 ', enter emergent pupil 8 (human eye) at last.The virtual image (being in infinite distant place) that image on the OLED becomes to amplify through optical system, human eye just can be observed the virtual image through amplifying on the OLED at the place, exit pupil position.
The crucial part of the present invention is, the one, the lens with certain magnification are arranged between right-angle reflecting prism and the emergent pupil, and these lens can make the focal length of whole optical system reduce, and have in other words increased the field angle of system.Thereby it is many greatly when making the whole image ratio not add lens; The 2nd, introduced binary optical elements in the system, i.e. the plane represented of 5 ' dotted line.Binary optical elements is placed on the plane of plano-convex lens, can significantly reduce difficulty of processing, mask process is adopted in processing, is processed into 8 ledge structures with three masks, and whole embossment structure as shown in Figure 5, embossment is made up of the groove of a circle circle as can be seen, a side arm of groove is engraved as 8 steps, and all depths of groove are identical, but the width difference, this structure can make binary optical elements have certain focal power, thereby realizes its optical property.
The focal power of binary optical elements is directly proportional with optical wavelength, has strong dispersion interaction, and single binary optical elements generally is not used in the photoimaging with certain bandwidth.But when it mixed by rights with ordinary lens, dispersion interaction can be cancelled out each other.Because the equivalent Abbe number of binary optical elements is approximately-3.452, and the Abbe number of optical glass is all more than 20.Therefore the binary optical elements that forms on a positive lens surface can play the effect of negative lens, gives it just can achromatism with suitable focal power, is used for the broadband imaging.In addition, binary optical elements has the arbitrary phase distribution character, is the aberration that optical design provides the more freedom degree to come corrective system, improves the image quality of optical system.Have, binary optical elements also has the character of flattened field again, and when single binary optical elements used, its curvature of field was zero, does not have the problem of proofreading and correct the curvature of field.So the design of employing hybrid optical system can reduce lens number, reduced volume and weight reduction in the optical system.
Claims (10)
1, a kind of refraction/diffraction mixed optical system is characterized in that, comprises successively along its optical axis direction: active display, refraction diffraction hybrid lens makes the reverberator and the lens of 90 ° of light deflections.
2, refraction/diffraction mixed optical according to claim 1 system is characterized in that described active display is a display of organic electroluminescence.
3, refraction/diffraction mixed optical according to claim 1 system is characterized in that described refraction diffraction hybrid lens has binary optical elements to place on the plane of plano-convex lens, and this binary optical elements is 8 step embossment structures.
4, refraction/diffraction mixed optical according to claim 1 system is characterized in that described reverberator is right-angle reflecting prism or total reflection prism.
5, refraction/diffraction mixed optical according to claim 1 system is characterized in that described lens are the lens with certain focal power and magnification.
6, according to each described refraction/diffraction mixed optical system in the claim 1 to 5, it is characterized in that, the light that sends by display of organic electroluminescence by refraction diffraction hybrid lens after, enter right-angle reflecting prism, rays pass through lens through reflection enters emergent pupil or human eye.
7, according to each described refraction/diffraction mixed optical system in the claim 1 to 5, it is characterized in that, comprise along its optical axis direction: be located at the display of organic electroluminescence on the focal plane, its light that sends is provided with the refraction diffraction hybrid lens of binary optical elements through the plane of plano-convex lens, enter right-angle reflecting prism, scioptics form the amplification virtual image at the emergent pupil place after reflection.
8, a kind of soldier's Helmet Mounted Display is characterized in that, this display optical system comprises successively along optical axis direction: display of organic electroluminescence, refraction diffraction hybrid lens, right-angle reflecting prism and lens.
9, soldier's Helmet Mounted Display according to claim 8 is characterized in that, this display has the shell of a protection inner structure, and a helmet hanging part that is connected with the helmet.
10, according to Claim 8 or 9 described soldier's Helmet Mounted Displays, it is characterized in that, the light that sends by display of organic electroluminescence by refraction diffraction hybrid lens after, enter right-angle reflecting prism, see through lens through the light of reflection, enter human eye.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007103025424A CN101256285A (en) | 2007-12-28 | 2007-12-28 | Refraction-diffraction mixed optical system as well as helmet display using the same |
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| CNA2007103025424A CN101256285A (en) | 2007-12-28 | 2007-12-28 | Refraction-diffraction mixed optical system as well as helmet display using the same |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482650B (en) * | 2008-12-30 | 2010-06-09 | 长春理工大学 | Refraction/diffraction composite flat field ocular |
| CN102096194A (en) * | 2010-12-24 | 2011-06-15 | 北京理工大学 | Optical transmission projection type three-dimensional helmet display |
| CN102540465A (en) * | 2011-12-09 | 2012-07-04 | 中航华东光电有限公司 | Optical system of helmet displayer |
| CN103149690A (en) * | 2013-03-01 | 2013-06-12 | 南京理工大学 | Three-dimensional (3D) head-mounted display |
| CN105301790A (en) * | 2015-10-20 | 2016-02-03 | 浙江科技学院 | Optical system capable of eliminating central light spots and illumination divergence angle regulating method |
| CN105319713A (en) * | 2014-05-28 | 2016-02-10 | 中强光电股份有限公司 | Optical lens and virtual image display module |
| CN106226907A (en) * | 2016-08-31 | 2016-12-14 | 深圳超多维科技有限公司 | A kind of VR display device and wear-type VR display device |
| CN107203038A (en) * | 2016-03-16 | 2017-09-26 | 中航华东光电（上海）有限公司 | Visualize individual soldier's Helmet Mounted Display |
| CN107622741A (en) * | 2017-10-13 | 2018-01-23 | 北京眸合科技有限公司 | A kind of air suspension display system |
| CN109870811A (en) * | 2017-12-04 | 2019-06-11 | 三星电子株式会社 | More image displays including diffraction optical lens element |
| WO2020199999A1 (en) * | 2019-03-29 | 2020-10-08 | 北京蚁视科技有限公司 | Total reflection based compact near-to-eye display device with large field of view |
| WO2021033362A1 (en) * | 2019-08-21 | 2021-02-25 | 株式会社Ｊｖｃケンウッド | Head-mounted display |
-
2007
- 2007-12-28 CN CNA2007103025424A patent/CN101256285A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482650B (en) * | 2008-12-30 | 2010-06-09 | 长春理工大学 | Refraction/diffraction composite flat field ocular |
| CN102096194A (en) * | 2010-12-24 | 2011-06-15 | 北京理工大学 | Optical transmission projection type three-dimensional helmet display |
| CN102096194B (en) * | 2010-12-24 | 2016-04-13 | 北京理工大学 | A kind of optical transmission projection type three-dimensional helmet display |
| CN102540465A (en) * | 2011-12-09 | 2012-07-04 | 中航华东光电有限公司 | Optical system of helmet displayer |
| CN103149690A (en) * | 2013-03-01 | 2013-06-12 | 南京理工大学 | Three-dimensional (3D) head-mounted display |
| CN103149690B (en) * | 2013-03-01 | 2016-03-02 | 南京理工大学 | A kind of 3D head-mounted display |
| CN105319713A (en) * | 2014-05-28 | 2016-02-10 | 中强光电股份有限公司 | Optical lens and virtual image display module |
| CN105301790B (en) * | 2015-10-20 | 2018-09-11 | 浙江科技学院 | The optical system and its illumination angle of divergence adjusting method of central bright spot can be eliminated |
| CN105301790A (en) * | 2015-10-20 | 2016-02-03 | 浙江科技学院 | Optical system capable of eliminating central light spots and illumination divergence angle regulating method |
| CN107203038A (en) * | 2016-03-16 | 2017-09-26 | 中航华东光电（上海）有限公司 | Visualize individual soldier's Helmet Mounted Display |
| CN106226907A (en) * | 2016-08-31 | 2016-12-14 | 深圳超多维科技有限公司 | A kind of VR display device and wear-type VR display device |
| CN107622741A (en) * | 2017-10-13 | 2018-01-23 | 北京眸合科技有限公司 | A kind of air suspension display system |
| CN109870811A (en) * | 2017-12-04 | 2019-06-11 | 三星电子株式会社 | More image displays including diffraction optical lens element |
| WO2020199999A1 (en) * | 2019-03-29 | 2020-10-08 | 北京蚁视科技有限公司 | Total reflection based compact near-to-eye display device with large field of view |
| WO2021033362A1 (en) * | 2019-08-21 | 2021-02-25 | 株式会社Ｊｖｃケンウッド | Head-mounted display |
| JP2021032975A (en) * | 2019-08-21 | 2021-03-01 | 株式会社Ｊｖｃケンウッド | Head mount display |
| JP7363186B2 (en) | 2019-08-21 | 2023-10-18 | 株式会社Ｊｖｃケンウッド | head mounted display |
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Open date: 20080903 |