CN202102176U - Virtual image display optical machine with asymmetrical focal length and high amplification factor - Google Patents
Virtual image display optical machine with asymmetrical focal length and high amplification factor Download PDFInfo
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- CN202102176U CN202102176U CN2011202199859U CN201120219985U CN202102176U CN 202102176 U CN202102176 U CN 202102176U CN 2011202199859 U CN2011202199859 U CN 2011202199859U CN 201120219985 U CN201120219985 U CN 201120219985U CN 202102176 U CN202102176 U CN 202102176U
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Abstract
A virtual image display optical machine with asymmetrical focal length and high amplification factor comprises an image display, an optical transparent material and a reflector. The optical transparent material is obliquely arranged between the image display and the reflector, a reverse anti-reflection film is coated on one surface of the optical transparent material opposite to the image display, a polarizing film or a polarizing film and a forward anti-reflection film are sequentially coated on the other surface of the optical transparent material, and the sum of the included angle of the reflector and the optical transparent material and the coating angle of the reverse anti-reflection film is 90 degrees. The virtual image display optical machine is a creative and novel design on the basis of an optical machine structure in birefringence virtual image optical design. Spatial virtual image is larger and clearer on the premise of higher amplification factor, is free of bending deflection but higher in flatness, and is capable of meeting requirements of customers of head mounted display (HMD) product field markets.
Description
Technical field
The utility model relates to a kind of ray machine, especially coating technique is applied on the ray machine, carries out the virtual image display apparatus of birefringence image, specifically a kind ofly lacks clear, the smooth virtual image of focal length, high enlargement ratio, video picture and shows ray machine.
Background technology
At present, the virtual image shows ray machine, for example traditional head mounted display HMD, and applied optics reflection and refraction effect are carried out virtual image projection usually, like the patent No. are: 200710176478.The virtual image display apparatus that the half reflection of X and refractive optical effect combination optical are used.Virtual image image is being imaging on the photo after the beam split of Polarizer system; At this moment, imaging focal length (polaroid is to the distance that is photo) is longer; The image that is photo is to be made up of as overlapping half real half empty slur in the visual focusing (eyes are to the distance of polaroid), and sharpness is relatively poor; Be the image on the photo, along with enlargement ratio increases, its image can become bent degree of deformation, presents half arc-shaped bend, and enlargement ratio is bigger, distortion is more serious; This is basic geometric optical theory.Simultaneously, because be the setting of photo, this kind virtual image optical devices visual focusing axle is longer, influences the apparent size size of display.Geometrical optics is when doing the design of optical projection system ray machine; It is general that to solve the heal mode of bending of projection image be to do multi-level amplification; Every layer of amplification adds the scattering angle of whole Shu Guangying, and be extremely minimum with the distortion situation of control image, this kind light ray machine light path axle lengthening; The combination of multi-disc eyeglass is arranged, and it is very long very big that volume size becomes.
Summary of the invention
The purpose of the utility model is to show the big problem of apparent size that the existing imaging focal length of ray machine is long, sharpness is relatively poor, flexural deformation is serious and the visual focusing axle is long, influence display to the existing virtual image; Propose a kind of simple in structure; The visual focusing axle is short; Image size is big, and the virtual image that flatness is high and sharpness is good shows ray machine.
The technical scheme of the utility model is:
A kind of not to the virtual image demonstration ray machine of parfocal, high enlargement ratio, it comprises video display, optically transparent material and catoptron; Described optically transparent material is oblique to be arranged between video display and the catoptron; On optically transparent material, the one side relative with video display be coated with reverse anti-reflective film; Another side is coated with light polarizing film or is coated with light polarizing film and forward anti-reflective film successively, and the angle of catoptron and optically transparent material is 90 degree with the plated film angle sum of reverse anti-reflective film.
The coaxial setting of the video display of the utility model, optically transparent material and catoptron.
The optically transparent material of the utility model is positioned on the coaxial cable of visual angle.
The optically transparent material optically transparent material of the utility model is resistant to elevated temperatures glass.
The concave mirror of the utility model and the angle of optically transparent material are 45 degree, and the plated film angle of reverse anti-reflective film is 45 degree.
The catoptron of the utility model is concave surface magnifying reflecting mirror or concave surface magnifying reflecting mirror group.
The beneficial effect of the utility model:
The utility model is in the mechanical-optical setup design with regard to birefringence effect virtual image optical design: make the new design of innovation improvement optics.The optical applications principle of up-to-date (virtual image dioptrics); Amplifying under the more powerful situation so that reach (the space virtual image) image energy, image is bigger, more clear and the higher and not flexural deformation of image flatness; More can the visual axis (Jiao) of image is shorter and smaller apart from being reduced to; Satisfy head mounted display HMD product scope market user's demand, the optical design of the utility model can break through ray machine and cause deformation of image because of the magnified image multiplying power, problem; Reduced the loss of sharpness degree of distortion, overcome the ray machine visual axis apart from a difficult problem that is unfavorable for product appearance greatly.
In the utility model, one side relative with video display on optically transparent material is plated reverse anti-reflective film, makes imaging on optically transparent material; Because of the imaging focal length of sighting distance (polarisation) axle significantly shortens, favourable appearance design is lighter, and is thinner; Littler, projection image but can throw bigger, more clear; Obtain the image of smooth indeformable bending, increase the produce market practicality.
The utility model is shorter because of sighting distance axle (polarisation) axle, on surface structure programmable thinner, gentlier, littler, practical.
In the utility model; On optically transparent material, be coated with light polarizing film and forward anti-reflective film successively with the opposing one side of video display; Can eliminate the light source image in ray machine; The general spontaneous phenomenon of the interference of light that is produced on the projected light path (as: halation that scattering of light causes and the shadow that changes) is avoided the decline of light source image definition.Increase the image of the space virtual image, under ray machine dark place effect, appear more near the validity of projection real image, sharpness is high.
The virtual image of the utility model shows ray machine, and the imaging enlargement ratio is high, can increase by the amplification visual experience of 10-15 % because of the imaging focal length that shortens more.
The utility model is broken through the framework of basic geometric optical theory, produces more space and the development of multiple projection optics product on design is used.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the optical path synoptic diagram of the main optical path of the utility model.
Fig. 3 is the optical path synoptic diagram of the utility model.
Fig. 4 is the systematic parameter figure of the ray machine combination of the utility model.
Fig. 5 is the principle schematic that the utility model extracts the virtual image.
Among the figure: 1, video display; 2, optically transparent material; 3, catoptron; 4, reverse anti-reflective film; 5, light polarizing film; 6, forward anti-reflective film; 7, first plane; 8, second plane.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Shown in Fig. 1-3, a kind of virtual image shows ray machine, and it comprises video display, optically transparent material and catoptron; Described optically transparent material is oblique to be arranged between video display and the concave mirror; On the optically transparent material, the one side (promptly after state first plane of glass sheet) relative with video display be coated with reverse anti-reflective film; Another side (stating second plane of glass sheet promptly) is coated with light polarizing film or is coated with light polarizing film and forward anti-reflective film successively, and the angle of concave mirror and optically transparent material is 90 degree with the plated film angle sum of reverse anti-reflective film.
Wherein, video display: be used for the display entity image frame, and the image ray cast is gone out;
Concave mirror: the light that reflects the video display projection that penetrated polaroid and came.
The film plating process of reverse anti-reflective film is: the electronics coating machine carries out in the process of coating anti reflection film to optically transparent material; Positive and negative electric charge on the particle gun electrode polarization storehouse of electronics coating machine is reverse; Carry out reverse coating anti reflection film, form reverse anti-reflective film on the optically transparent material surface.
The glass that is coated with light polarizing film is spread glass: as shown in Figure 1; One side is coated with reverse anti-reflective film; When another side was coated with light polarizing film and forward anti-reflective film successively: the reverse anti-reflective film on the polaroid had semi-penetration semi-reflective property; One side towards video display is that the positive interaction face is a penetration surface, has penetrability; One side towards polaroid is that reaction surface is a reflecting surface, has reflectivity; Forward anti-reflective film on the polaroid has semi-penetration semi-reflective property, is that the positive interaction face is a reflecting surface towards the one side of concave mirror, has reflectivity; One side towards light polarizing film is that reaction surface is a penetration surface, has reflectivity; The light penetration polaroid of video display projection is to concave mirror, the light of polaroid reflective concave surface mirror reflection.
Glass sheet: as shown in Figure 1, one side is coated with reverse anti-reflective film, and another side is coated with light polarizing film and forward anti-reflective film successively:
As shown in Figure 2; Video display emit beam (a) penetrate first plane and second plane of glass sheet, be incident to concave mirror, first plane of concave mirror reflection ray to glass sheet; On the forward anti-reflective film, produce beam split; Main light splitter (c) refracts to second plane of glass, behind light (d) the penetrating positive anti-reflective film that reflects on the reverse anti-reflective film, penetrates, in the imaging of the retina image-forming district of human eye.
As shown in Figure 3, (a) be penetrability light; (b) refract light (the main light splitter of (a) penetrates); (c) main light splitter; (e) be secondary light splitter (penetrating); (d) be the reflection ray of (e); (h) for the secondary light splitter of beam split (a);
Among Fig. 5, F is the visual axis distance (being focal length) of g axle.
During practical implementation:
In the ray machine of birefringence virtual image optical design, should design the assembly of ray machine and do the optics improvement design, mode of ameliorating is following:
1, as shown in Figure 1, the electronics evaporating coating is done on glass sheet second plane, plates the light polarizing film of function angle design, lets light have 50 % penetrances and has 50 % reflectivity Characteristics.(evenly produce the optical image effect that divides; Produce twice real (void) branch optical image clearly); The back plates one deck forward antireflection plated film again, increases the light penetration rate, increases vision definition and prevents the interference of light that the scattering of external light source causes and the influence of halation.
2, glass sheet first plane (that is: on the optically transparent material, relative one side) with video display then design (the employing patent No. is " 201110069118 with the inversion electron vapour deposition method.6 " a kind of method that can eliminate the reverse coating anti reflection film of interference of light image in the optical imagery) plate the anti-reflective film of acting in opposition face, let the anti-reflective film of acting in opposition face produce acting in opposition (.Use as being photo; Two.Light source scattering phenomenon and ghost that elimination causes in glass sheet thickness make image reduce because of the interference of light, and the problem that influences the image definition degree and be degree of distortion is reduced to minimum).
3, cancellation is original is the imaging sheet device on the vision axis at the polarization optical axis; To be the photo function and be transferred on glass sheet second plane and promptly be coated with on the plane of reverse anti-reflective film, effectively shorten the length of visual focusing, strengthen the video vision effect.
4, in addition eyeball window eye lens window do (eyeglass attachment means) with reinforcement laser high myopia and presbyopia with the presbyopia is arranged and (having the number of degrees to correct the eyeglass of vision) that the myopia patient will use adjusted the focus of visual focusing.
Just improve mechanical-optical setup and component technology setting, the new optical applications principle that is produced and the explanation of effect and optical effect effect are following;
The principle explanation of above-mentioned 1,2,3 modifications:
These 3 design improved are the planes (focal length of video imaging is shortened) that will promptly be coated with (be photo function design) reverse anti-reflective film on second plane; Under the reverse plated film of anti-reflective film; Generation is with the light source image; It is that light polarizing film and forward anti-reflective film hold the plane that mat miter angle polarisation affacts glass first plane, and same function traverses to concave surface and amplifies refracting telescope.After the curvature refraction amplification through arcwall face; Throw go back to first plane of polarisation miter angle; Produce the twice refraction and divide the antireflection acting surface of optical image to second plane; Projection becomes an angle of 90 degrees directly to penetrate second plane together; Another road divides optical image then not become an angle of 90 degrees to throw second plane, because of the anti-reflective film positive acting, so produce deflecting light beams because of non-an angle of 90 degrees again; Return first plane and penetrate the arrival of first plane; On the axis of visual axis, get into the eyeball retinal field and sense and form image, so (focus) of retina focal length drops on (forming the focus of the imaging fixed focal length of image) on the light polarizing film on first plane and light source image and then form the not space virtual image on retina of focus (this virtual image can not influence the zoom action of eyeball vision) because of the repeatedly refract light path that thickness the produced lengthening of glass sheet extends.Light source image transferring on Polarizer second plane (reverse anti-reflective film surface) in addition because of imaging surface; Original (polarization light (axle) path) significantly shortened, the image sighting distance that eyes are seen more closely, the image visual experience of (bigger) more greatly than original enlargement ratio.---------(the addition effect principle that causes image to amplify) explanation.
First plane of Polarizer glass is behind the polarisation plated film; (oppositely) the anti-reflective film plated film that adds plating forward anti-reflective film and glass second plane again; Under the synergy, let the eyeball visual experience reduce the light scatter effect (for example exposure effect) of the normality property that repeatedly folding (instead) effect of penetrating that on the light path of projection, produces of light source image takes place and penetrate these (common name interference of light phenomenon is the main cause of image definition) meeting quilt (oppositely) anti-reflective film effects eliminatings of dual repeatedly shadow (ciomatic flare) that interface can produce.The front is then because of the effect of (forward) anti-reflective film; And strengthened the penetrability effect of vision polarization optical axis glazed thread; And the interference visual effect that reduces (halation phenomenon) causes sharpness to descend gradually; Make ray machine inner (dark place effect) better, let the eyeball visual experience obtain visual experience degree more clearly.------------(principle of the increase of sharpness) explanation.
The improvement design unitized construction of this assembly of three is created the projection image amplifying technique that the makes new advances image optics application principle of parfocal (not to).The major technique effect be break through (basic geometric optical theory) to the projection magnified image projection focal length and imaging focal length must equity down, the image enlargement ratio is bigger, it is big that imaging surface deformation of image rate also becomes relatively, will be bigger as if shortening focal length deflection.
The utility model principle; Be to utilize human eyeball (virtual vision sensory function) Cheng as Yuan Li –---to explain: eyes are the most careful level scanning sensing devices; Its distinguishable spatial level sense, but only still can not many focuses zoom due to (focus can only one) eyeball crystalline.
Present technique will originally design to (imaging focal length shortening) in the parfocal, remove the 3rd the photo that is exactly, second plane of the 2nd glass sheet is plated the antireflection plated film of (oppositely) effect, use as imaging plane.Because anti-reflective film acting in opposition; Make (shortening of projection imaging focal length); Relative (visual focusing) on vision polarization optical axis also foreshortens on the glass sheet significantly; Under the effect by meticulous level perceptional function of eyes and single focus zoom, letting glass sheet second plane with high-penetrability become the imaging surface of the visual focusing on the polarization optical axis, also is (fixed-focus on the retina).In the virtual image of glass sheet second plane refraction imaging then because hierarchical space (virtual vision) function of eyeball; On the polarization optical axis of quartzy spheroid (imaging), so people's eyes are being fixed on the polarisation glass on second plane with the retina image-forming focus under (the dark place effect of ray machine).Yet the virtual image that can change is formed on (level vision) impression at eyeball (quartzy spheroid), and does not influence amphiblestroid focal variation.Here it is sees that the virtual image can not cause (motion of eyeball high frequency convergent-divergent, retina high frequency focus zoom) to cause eyes to feel tired principle.By the light source high-penetrability on second plane, the penetrable background scenery of seeing just forms (eyeball virtual vision) the optical effect principle of so-called (the space virtual image).
Because of the shortening of imaging focal length shortens the radial light path of enlarging projection and the distortion focus of video imaging focal length does not have (on original polarizing axis be photo) so image does not have imaging surface can form images and demonstrate the bending face; The light source image is therefore imaging focal length shortening also; The focus of concave surface magnifier refraction focal length; At rear, second plane; So image is between the focus of staggered first focus (in concave mirror the place ahead, image turns upside down because of refraction action) of the refraction of optical beam and imaging focal length, forming (the space virtual image) by glass sheet second plane again is smooth indeformable image; The imaging focal length shortening of adding on the aforesaid polarization optical axis causes in the ocular vision impression, and the bigger visual effect of image enlargement ratio is arranged.---------(forming the smooth not flexural deformation of image, the visual process optical applications principle that enlargement ratio is bigger) explanation that Here it is
The utility model does not relate to all identical with the prior art prior art that maybe can adopt of part to be realized.
Claims (6)
1. one kind does not show ray machine to the virtual image of parfocal, high enlargement ratio, it is characterized in that it comprises video display, optically transparent material and catoptron; Described optically transparent material is oblique to be arranged between video display and the catoptron; On optically transparent material, the one side relative with video display be coated with reverse anti-reflective film; Another side is coated with light polarizing film or is coated with light polarizing film and forward anti-reflective film successively, and the angle of catoptron and optically transparent material is 90 degree with the plated film angle sum of reverse anti-reflective film.
2. according to claim 1 not to the virtual image demonstration ray machine of parfocal, high enlargement ratio, it is characterized in that the coaxial setting of described video display, optically transparent material and catoptron.
3. according to claim 1 not to the virtual image demonstration ray machine of parfocal, high enlargement ratio, it is characterized in that described optically transparent material is positioned on the coaxial cable of visual angle.
4. according to claim 1 not to the virtual image demonstration ray machine of parfocal, high enlargement ratio, it is characterized in that described optically transparent material optically transparent material is resistant to elevated temperatures glass.
5. according to claim 1 the angle that it is characterized in that described concave mirror and optically transparent material is 45 degree not to the virtual image demonstration ray machine of parfocal, high enlargement ratio, and the plated film angle of reverse anti-reflective film is 45 degree.
6. according to claim 1 not to the virtual image demonstration ray machine of parfocal, high enlargement ratio, it is characterized in that described catoptron is concave surface magnifying reflecting mirror or concave surface magnifying reflecting mirror group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202199859U CN202102176U (en) | 2011-06-24 | 2011-06-24 | Virtual image display optical machine with asymmetrical focal length and high amplification factor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011202199859U CN202102176U (en) | 2011-06-24 | 2011-06-24 | Virtual image display optical machine with asymmetrical focal length and high amplification factor |
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| CN202102176U true CN202102176U (en) | 2012-01-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012174997A1 (en) * | 2011-06-24 | 2012-12-27 | 南京炫视界光电科技有限公司 | Optical device for virtual image display with unequal focal length and high magnification |
-
2011
- 2011-06-24 CN CN2011202199859U patent/CN202102176U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012174997A1 (en) * | 2011-06-24 | 2012-12-27 | 南京炫视界光电科技有限公司 | Optical device for virtual image display with unequal focal length and high magnification |
| US9019175B2 (en) | 2011-06-24 | 2015-04-28 | Watchman Tech. Co., Limited | Optical device for virtual image display with unequal focal length and high magnification |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120104 Effective date of abandoning: 20140402 |
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| RGAV | Abandon patent right to avoid regrant |