CN202285062U - Negative pressure virtual image display system - Google Patents
Negative pressure virtual image display system Download PDFInfo
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- CN202285062U CN202285062U CN2011204426664U CN201120442666U CN202285062U CN 202285062 U CN202285062 U CN 202285062U CN 2011204426664 U CN2011204426664 U CN 2011204426664U CN 201120442666 U CN201120442666 U CN 201120442666U CN 202285062 U CN202285062 U CN 202285062U
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- projection screen
- spherical reflector
- rear projection
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Abstract
The utility model provides a negative pressure virtual image display system. A projector bracket is fixed on the upper part of a room body. A projector is fixed at the upper end of the projector bracket. A light-emitting diode (LED) display screen fixing frame is fixed on the room body outside the projector bracket. An electronic cabinet cage body is fixed outside the room body. A spherical mirror is fixed on the upper part of a spherical mirror pedestal. A spherical mirror upper cover is fixed on the room body on the upper part of the spherical mirror. A hyperboloidal rear projection screen is fixed on an upper part in the room body, and corresponds to the projector. A rear projection screen upper cover is fixed on the upper part of the hyperboloidal rear projection screen. The room body forms a dark space for an optical system to work, so that a good imaging environment is formed for optical parts, and the mounting requirements of the optical parts are met; the hyperboloidal rear projection screen has high resolution, high gain and a large viewing angle; the spherical mirror has high surface shape accuracy and high mirror plane stability; a split structure is convenient to assemble and subsequently upgrade; and the structure design is convenient to maintain and repair in a later period.
Description
Technical field
The utility model relates to the negative pressure virtual image display system, belongs to virtual image display technique field.
Background technology
What existing flight simulator used is called WIDE (Wide-Angle Infinity Display Equipment) wide-angle infinite display device again from the axle virtual image display system.Virtual image display mode has characteristics such as depth of field sense is strong, imaging fidelity height, can be to a kind of visual experience as on the spot in person of people, thereby extensively adopted by large-scale high-grade flight simulator.This system mainly is made up of projector, sphere collimating mirror and hyperboloid rear projection screen and the soft curtain of import optics.Collimating mirror generally has silex glass material spherical reflector and high anti-flat film negative pressure sphere-forming catoptron.Rear projection screen generally is the hard curtain of hyperboloid, and normally flat organic glass hot forming on mould handles obtaining again through special coating process, requires that its transmissivity is high, dispersion effect is good.
Because adopt from the axle mode, the radius ratio of sphere collimating mirror is bigger, generally can reach 2～3.5m, the horizontal field of view angle can reach 150 °～220 °, and vertical field of view can reach 40 °～60 °.See that from image-forming principle its advantage is that optical energy loss is little, brightness is high, the image of generation can be similar to aerial brightness.The latter half that belongs to ball on the sphere collimating mirror structure; Eyespot is not at its optical axis; Near the passenger cabin spurious rays can be through direct reflection in the pilot visual field, and when the observer during away from optical axis pattern distortion little, thereby the pilot when observing what comes into a driver's the head movement scope big.
Because this system is to be that thing and the kine bias that produced of system is from optical axis from axle optics; Thereby optical system not exclusively satisfies the formula and the rule of paraxial optics; To project to from axial ray still has after calculating on the axle error to exist; Need reasonably to select the position and the face shape of back projection screen, guarantee that the nonlinear distortion of image is minimum.
The method of aberration correction mainly contains and adopts the high order aspheric surface catoptron in the WIDE system, around the turning axle rotational forming, uses software that image is proofreaied and correct after the rear projection screen planar design.High order aspheric surface catoptron manufacture difficulty is big, and cost is high, and the visual field is restricted; The rear projection screen of rotational forming is when horizontal field of view is big, and because of eyespot departs from turning axle, from the influence of axle system to The Calculation of Optical Path, visual field center image and edge differ greatly in addition; Using software to proofread and correct can not can only offer help to distortion and color, brightness fusion from aberration correction in essence.
The utility model content
The purpose of the utility model is big in order to solve existing high order aspheric surface catoptron manufacture difficulty, and cost is high, and the visual field is restricted; The rear projection screen of rotational forming because of eyespot departs from turning axle, leaves the influence of axle system to The Calculation of Optical Path in addition when horizontal field of view is big, the problem that visual field center image and edge differ greatly, and then a kind of negative pressure virtual image display system is provided.
The purpose of the utility model realizes through following technical scheme:
Negative pressure virtual image display system: comprise on projector, projector support, LED display fixed mount, room body, electronic housing cage body, the rear projection screen cover, hyperboloid rear projection screen, spherical reflector and spherical reflector bearing on cover, the spherical reflector; Said projector support is fixed on the top of room body; The upper end of projector support is fixed with projector; The LED display fixed mount is fixed on the room body in the projector support outside, and electronic housing cage body is fixed on the outside of room body, and the spherical reflector bearing is fixed on the bottom of room body; Spherical reflector is fixed on the top of spherical reflector bearing; Cover is fixed on the room body on spherical reflector top on the spherical reflector, and the hyperboloid rear projection screen is fixed on the interior top of room body and corresponding with projector, and cover is fixed on the top of hyperboloid rear projection screen on the rear projection screen.
The beneficial effect of the utility model: the room body of the utility model has formed the dark space of an optical system job, for optics constitutes good imaging circumstances to satisfy the installation needs of optics; Hyperboloid rear projection screen resolution is high with gain, and angle of visibility is big; The precision of spheric reflection minute surface shape is high, the minute surface good stability; Direct reflection is imaged as the virtual image, and depth feelings is extremely strong, the feeling of immersion that increases greatly; Split structure and be convenient to assembling and subsequent upgrade needs; Structural design is convenient to the later stage maintenance and is safeguarded.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of the utility model negative pressure virtual image display system;
Fig. 2 is the structural representation of spherical reflector;
Fig. 3 is the virtual image index path sectional drawing of spherical reflector.
Embodiment
To do further detailed description to the utility model below: present embodiment provided detailed embodiment, but the protection domain of the utility model is not limited to following embodiment being to implement under the prerequisite with the utility model technical scheme.
A kind of negative pressure virtual image display system that present embodiment is related: like Fig. 1～shown in Figure 3; Comprise cover 6 on projector 1, projector support 2, LED display fixed mount 3, room body 4, electronic housing cage body 5, the rear projection screen, cover 7 on the spherical reflector, hyperboloid rear projection screen 8, spherical reflector 9, spherical reflector bearing 10 and vacuum pump 11; Said projector support 2 is fixed on the top of room body 4; The upper end of projector support 2 is fixed with projector 1, and LED display fixed mount 3 is fixed on the room body 4 in projector support 2 outsides, and electronic housing cage body 5 is fixed on the outside of room body 4; Spherical reflector bearing 10 is fixed on the bottom of room body 4; Spherical reflector 9 is fixed on the top of spherical reflector bearing 10, and cover 7 is fixed on the room body 4 on spherical reflector 9 tops on the spherical reflector, and hyperboloid rear projection screen 8 is fixed on top in the room body 4 and corresponding with projector 1; Cover 6 is fixed on the top of hyperboloid rear projection screen 8 on the rear projection screen, and vacuum pump 11 is connected with the inside of spherical reflector bearing 10.
Said spherical reflector 9 comprises mirror body 9-1, two auxiliary mirror 9-2, maintenance bar 9-3 and sensor 9-4; The two ends of said mirror body 9-1 respectively are fixed with an auxiliary mirror 9-2; Keep the stage casing of bar 9-3 to be fixedly connected with the bottom of mirror body 9-1; Keep the two ends of bar 9-3 to be fixedly connected with two auxiliary mirror 9-2 respectively, sensor 9-4 is fixed on the mirror body 9-1.
The parameter index of the utility model:
One, negative pressure virtual image display system major parameter:
Two, collimation spherical reflector:
The spherical reflector bearing oozes the heating cure of glass cloth vacuum in advance and forms with light structures frp honeycomb outside surface is compound, establishes 70 spheres around the inside surface and strengthens the support edge.Keep the 70mm cavity so that vacuumize into spherical shape between spherical reflector bearing shell inner surface and reflectance coating.For the slick and sly degree that guarantees the spheric reflection film does not make it play pleat around the corner, added two auxiliary mirrors, make the spheric reflection film reach excessively slick and sly.
Control system is monitored air negative pressure in the spherical reflector bearing cavity at any time through sensor, drives vacuum pump work and keeps air negative pressure power, guarantees the workplace shape of reflectance coating.
Radius 3000mm
The overall geometry data
The minute surface data
43 ° ± 1 ° at vertical centre of sphere angle
180 ° ± 1 ° at horizontal centre of sphere angle
Three, hyperboloid rear projection screen:
The general frame that rear projection screen is processed by hyperboloid aviation-grade organic glass screen and compound substance is formed.The effect of rear projection screen mainly is the light scattering of the different wave length of projector projection to be gone out in catoptron, become the virtual image, is the critical component of this system imaging quality of decision.Cover the soft optics curtain of one deck at hyperboloid organic glass outside surface, as scattering layer.This curtain resolution is high with gain, and angle of visibility is big.
Physical dimension
The big length of side 3606 ± 2mm
The little length of side 2757 ± 2mm
Cover on cover and the rear projection screen on the spherical reflector, its effect is that spherical reflector and rear projection screen are sealed in the darkroom, and forward position sinking when preventing the rear projection screen cantilever support simultaneously links the upper ledge and the last cover of rear projection screen.
Vacuum control system adopts contactless range sensor to measure the distance that spherical reflectance coating geometrical center method arrives canonical reference point apicad in real time; And the negative pressure system gas flow is reconciled in real time and control according to data measured; Make measurement point to the distance of canonical reference point be controlled at default value ± the 1mm scope in, realize the stable of minute surface.
The surface figure accuracy control of film spherical reflector
This technology is used to guarantee that film spheric reflection minute surface face pictograph closes the high precision index request.Because the film spherical reflector is through being posted in the reflective film on the spherical reflector bearing cavity frame, making it be tensioned to the needed curvature shapes of optical system through negative pressure.If the film that forms catoptron is through the inconsistent torsional deformation that will cause displayed image of the formed curvature of negative pressure effect tensioning.What therefore in the process of development, primarily solve is the precision that forms spheric reflection minute surface shape.Because its face shape of film spherical reflector is one from an axle spherical zone, the spheric reflection minute surface shape that control this diameter and be more than 6 meters is very difficult.In order to solve this difficulty; The method of taking is: the high-precision compound substance frame through numerically-controlled machine processing has been installed on spherical reflector bearing matrix; When reflective film is attached to the frame of compound substance through the negative pressure tensioning, just can guarantee the needed curvature shapes of optical system.Therefore the curvature precision of the compound substance frame on the spherical reflector bearing matrix will determine the surface figure accuracy of whole spherical reflector.
Sphere shell δ 30 reduces rigidity because of aluminium honeycomb pressurized on sphere is prone to unstability, and intermediate course is with δ 26 frp honeycombs, and ectonexine respectively lays δ 2 epoxies and oozes glass cloth in advance, in the steel construction former, vacuumizes heating cure.For improving rigidity and intensity, outside the sandwich of stiffened edge filling all around, twine δ 2 preparatory carburizing cloth, the heating cure of pressurizeing thereafter is shaped.The stiffened edge looping of relative position is solidified in the enclosure separately again.Before curing, corresponding built-in fitting is fixed.The seam reinforcement that on abutment joint, is shaped with special-purpose former is strengthened connecting, the black lusterless paint of inside surface spray behind the monolithic molding.
In order to control the installation accuracy of compound substance frame; Utilize ball inside radius high Precision Detection appearance; High precision multiaxis turntable is installed at the centre of sphere place of spherical reflector bearing, is fixed dial gauge probe, be used for detecting the curvature of compound substance frame in the expansion link termination that links.Solved a difficult problem of having only complex device could detect high precision large-sized sphere internal diameter precision.According to the imaging requirements of spherical reflector, the curvature precision of compound substance frame is at ± 0.1mm.Therefore use precision to detect the data that obtain and come the compound substance frame is carried out adaptability revision, satisfy request for utilization fully as this detector of 0.02mm.Thereby guaranteed the surface figure accuracy of whole film spherical reflector.
Cover the reflectance coating stage.Earlier reflective film is put enough surplus blankings all around by Molded Line before covering film.Then double faced adhesive tape is placed edge strip outer, location, reflectance coating is on top laid the lower edge from left to right again after laying, the fixing lower edge press strip of going up.The typing of bleeding after edge strip place, the left and right sides has been laid, the typing debugging mode leans on dual-side firmly to stretch, and reaches when not sending out wrinkle, can press the both sides edge strip.According to this moment face type position confirm position transducer extreme position stop switch parameter.The face type and have related parameter to confirm after, at the effective sticking outward deposited single face glue black cloth in viewing area.This stage covers with the film examination of parameter correlation earlier, formally covers film again after technology is confirmed.
The main suitable application area of the utility model is: 1. flight class viewing platform, high-end simulation; 2. land route class viewing platform, high-end simulation; 3. Hainan Airlines class viewing platform, high-end simulation; 4. require the strong display technique of depth feelings, high-end demonstration; 5. virtual image display technique is used and test platform.
The above; Be merely the preferable embodiment of the utility model; These embodiments all are based on the different implementations under the utility model general idea, and the protection domain of the utility model is not limited thereto, and any technician who is familiar with the present technique field is in the technical scope that the utility model discloses; The variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claims.
Claims (2)
1. negative pressure virtual image display system; Comprise on projector, projector support, LED display fixed mount, room body, electronic housing cage body, the rear projection screen cover, hyperboloid rear projection screen, spherical reflector, spherical reflector bearing and vacuum pump on cover, the spherical reflector; It is characterized in that said projector support is fixed on the top of room body, the upper end of projector support is fixed with projector; The LED display fixed mount is fixed on the room body in the projector support outside; Electronic housing cage body is fixed on the outside of room body, and the spherical reflector bearing is fixed on the bottom of room body, and spherical reflector is fixed on the top of spherical reflector bearing; Cover is fixed on the room body on spherical reflector top on the spherical reflector; The hyperboloid rear projection screen is fixed on the interior top of room body and corresponding with projector, and cover is fixed on the top of hyperboloid rear projection screen on the rear projection screen, and vacuum pump is connected with the inside of spherical reflector bearing.
2. negative pressure virtual image display system according to claim 1; It is characterized in that; Said spherical reflector comprises mirror body, two auxiliary mirrors, maintenance bar and sensors, and the two ends of said mirror body respectively are fixed with an auxiliary mirror, keep the stage casing of bar to be fixedly connected with the bottom of mirror body; Keep the two ends of bar to be fixedly connected with two auxiliary mirrors respectively, sensor is fixed on the mirror body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204426664U CN202285062U (en) | 2011-11-10 | 2011-11-10 | Negative pressure virtual image display system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204426664U CN202285062U (en) | 2011-11-10 | 2011-11-10 | Negative pressure virtual image display system |
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| CN202285062U true CN202285062U (en) | 2012-06-27 |
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| CN2011204426664U Expired - Lifetime CN202285062U (en) | 2011-11-10 | 2011-11-10 | Negative pressure virtual image display system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749798A (en) * | 2012-07-11 | 2012-10-24 | 南京美乐影视科技有限公司 | Back projection reflecting system fixing device |
| CN104765243A (en) * | 2015-01-26 | 2015-07-08 | 北京航空航天大学 | Multichannel wide angle unlimited display equipment based on flat-end conical rear projection screen |
| CN105045028A (en) * | 2015-08-12 | 2015-11-11 | 中国人民解放军95995部队 | Paraxial virtual image display system with superwide vertical field angle |
| CN109036158A (en) * | 2018-08-07 | 2018-12-18 | 四川大学 | Simulator LED type immersion display system |
| CN112513709A (en) * | 2018-07-24 | 2021-03-16 | 斯科蒂克私人有限公司 | Collimated visual display system |
-
2011
- 2011-11-10 CN CN2011204426664U patent/CN202285062U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749798A (en) * | 2012-07-11 | 2012-10-24 | 南京美乐影视科技有限公司 | Back projection reflecting system fixing device |
| CN104765243A (en) * | 2015-01-26 | 2015-07-08 | 北京航空航天大学 | Multichannel wide angle unlimited display equipment based on flat-end conical rear projection screen |
| CN105045028A (en) * | 2015-08-12 | 2015-11-11 | 中国人民解放军95995部队 | Paraxial virtual image display system with superwide vertical field angle |
| CN112513709A (en) * | 2018-07-24 | 2021-03-16 | 斯科蒂克私人有限公司 | Collimated visual display system |
| CN109036158A (en) * | 2018-08-07 | 2018-12-18 | 四川大学 | Simulator LED type immersion display system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120627 |
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| CX01 | Expiry of patent term |