CN201075146Y - Minitype ball curtain projection system for flight simulator - Google Patents
Minitype ball curtain projection system for flight simulator Download PDFInfo
- Publication number
- CN201075146Y CN201075146Y CNU2007200323747U CN200720032374U CN201075146Y CN 201075146 Y CN201075146 Y CN 201075146Y CN U2007200323747 U CNU2007200323747 U CN U2007200323747U CN 200720032374 U CN200720032374 U CN 200720032374U CN 201075146 Y CN201075146 Y CN 201075146Y
- Authority
- CN
- China
- Prior art keywords
- lens
- positive
- group
- objective
- projection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Lenses (AREA)
Abstract
The utility model relates to a minitype dome-screen projection system used for a flight simulator, comprising a hemispherical projection screen with fixed dimension, a projection objective and an image generator; the centre of the circle of the hemispherical projector screen passes through the camera lens optical axis of the projection objective and takes the optical axis as a symmetry axis; the projection objective comprises a front group, a middle group, a diaphragm and a right rear group which are sequentially arranged between the hemispherical protection screen and the image generator. The front group comprises a meniscus lens group with negative value of total focal power; the middle group comprises a drum-shaped lens and a piece of slab glass; the right rear group comprises an objective group with positive value of the total focal power. The utility model solves the technical problems that existing dome-screen protection system has complex structure, poor system performance and high cost. The utility model has the advantages of wide view field, good aberrational correction results, short distance sphere imaging, low manufacture and processing cost and wide application range.
Description
Technical field
The utility model relates to the spherical screen optical projection system, relates in particular to a kind of single-lens optical projection system that is used for Projection Display on the microspheric form shaped screen.
Background technology
Flight simulator has become the important device that the pilot is trained since occurring in early 1930s gradually.As the what comes into a driver's display technique of one of flight simulator core technology, follow the development of modern display technique that huge variation is also taking place.Early stage flight is intended device and is often adopted the Close Circuit Television (CCTV) visual system, all adopts this visual system as U.S.'s " Mercury " number, " Gemini " number airship training simulators.The 6 aircraft flying training simulator visual scene systems that destroy of China's development seventies in 20th century also adopt the CCTV form, image source is long 15m, the ground scape model of high 5m is taken the correspondingly zones of different of scape model with video camera with many cover servomechanisms by the different of flight path, course and attitude angle.The visual system of this form is because of requiring very big building interior space, and mechanical follower complexity, is changed factor such as scene difficulty and is eliminated gradually the end of the seventies system maintenance.1964, NASA installed at the manned space flight center first can real time imagery robot calculator.This system only can provide plane perspective view and produce some textures, but can not produce corner angle.At Apollo Personnel investigation Program " in the works, NASA improves this visual system, makes it can produce three-dimensional image and superficial makings.The seventies, the develop rapidly of computer hardware technique has made the computer generated image technology can produce three-dimensional body very true to nature.Along with continuous advancement in technology, computer generated image has become the main image source of visual system.Development at present and the almost whole appliance computer imaging techniques of the flight simulator that uses.What the Y7-100 aircraft flight simulator of China's independent development nineties adopted is exactly the visual system of computer generated image mode.
The use of ball curtain projection system starts from eighties of last century U.S.'s eighties, be mainly used in motion picture projection at the beginning, be applied to gradually afterwards in the middle of planetarium and the fly simulation training, the ball curtain radius of these systems does not all wait to tens meters at ten meters, and size is bigger, with high costs.
Compare plane display method, spherical screen (being called for short the ball curtain) shadow casting technique has outstanding advantage.No matter be to show or civilian other motion picture projection of level as image that in flight simulator what the ball-screen projection technology brought the user all is brand-new visual experience.Its great advantage is to obtain very big observation open country (level and vertical field of view), has the incomparable advantage of other system especially in vertical direction, and the image depth feelings is strong and have more the sense of reality, fully improves the ornamental value of training effect and picture.
At present, the trend of the oriented screen radius of ball curtain projection system miniaturization development, this has reduced the cost of whole system on the one hand, has also catered to increasing unit or the individual demand to this system on the other hand.External existing part producer begins to be devoted to the exploitation and the development of the ball curtain system of single use, has occurred some matured products in recent years.Topmost system adopts many projectors (being generally 3) associated working, to specific ball curtain subregion projection, and adopt computer picture seamless combination technology that image is carried out pre-service, but the shortcoming of this system is a complex structure, and image has deviation.The projector of another kind of type uses a projection lens to carry out work, need not carry out too much processing to image, but the shortcoming of this system is that the optical system visual field is little, and it is poor to resemble the face illuminance uniformity, the cost height.
Summary of the invention
The purpose of this utility model provides a kind of microspheric form curtain projection system that is used for flight simulator that adopts single-throw shadow objective lens design scheme, and it has mainly solved existing ball curtain projection system complex structure, and system performance is poor, the technical matters that cost is high.
First kind of technical solution of the present utility model is:
A kind of microspheric form curtain projection system that is used for flight simulator, the semispherical projection screen that comprises fixed measure, projection objective and pictcure generator, the described semispherical projection screen center of circle is an axis of symmetry by the camera lens optical axis of projection objective and with the optical axis, its special character is: described projection objective comprises preceding group on the camera lens optical axis that is successively set between semispherical projection screen and the pictcure generator, middle groups, diaphragm 6 and positive back group, group comprises that total focal power is the meniscus lens group of negative value before described, described middle groups comprises drum lens and sheet glass 5, described positive back group comprise total focal power on the occasion of objective lens.
The group first bent moon negative lens 1 and preceding group second bent moon negative lens 2 before group comprises before above-mentioned, described middle groups comprise middle groups cydariform negative lens 3 glued together and middle groups cydariform positive lens 4, sheet glass 5.
Above-mentioned positive back group comprises positive back group first negative lens 7 glued together and positive back group first positive lens 8, positive back group positive lens 9, positive back group second negative lens 10 and positive back group second positive lens 11 glued together.
Above-mentioned positive back group can adopt Gauss objective half system of.
Above-mentioned positive back group can adopt only dual system, and described only dual system comprises the form of connecting airtight of two single-positive-lens and just two cemented objectives.
Above-mentioned positive back group can adopt day a plug objective system and a derived type thereof, and described day plug objective system comprises single-positive-lens+negative object lens+just two cemented objectives of just two gummeds.
Above-mentioned positive back group can adopt three type structures, and described three type structures comprise by positive and negative positive three simple lenses.
Second kind of technical solution of the present utility model is:
A kind of microspheric form curtain projection system that is used for flight simulator, the semispherical projection screen that comprises fixed measure, projection objective and pictcure generator, the described semispherical projection screen center of circle is an axis of symmetry by the camera lens optical axis of projection objective and with the optical axis, its special character is: described projection objective comprises preceding group that is successively set between semispherical projection screen and the pictcure generator, 45 degree completely reflecting mirrors, middle groups, diaphragm 6 and positive back group, group comprises that total focal power is the meniscus lens group of negative value before described, described middle groups comprises drum lens and sheet glass 5, described positive back group comprise total focal power on the occasion of objective lens.
The group first bent moon negative lens 1 and preceding group second bent moon negative lens 2 before group comprises before above-mentioned; Described middle groups comprises middle groups cydariform negative lens 3 glued together and middle groups cydariform positive lens 4, sheet glass 5; Described positive back group comprises positive back group first negative lens 7 glued together and positive back group first positive lens 8, positive back group positive lens 9, positive back group second negative lens 10 and positive back group second positive lens 11 glued together.
Above-mentioned positive back group can adopt Gauss objective half system of, only dual system, day plug objective system or three type structures; Described only dual system comprises the form of connecting airtight of two single-positive-lens and just two cemented objectives; Described positive back group can adopt day a plug objective system and a derived type thereof; Described day plug objective system comprises single-positive-lens+negative object lens+just two cemented objectives of just two gummeds; Described three type structures comprise by positive and negative positive three simple lenses.
The advantage of the utility model system is:
1, big visual field.As can be seen from Figure 1, the visual field of the utility model optical system is very big, and full field angle reaches 170 degree.
2, the aberration correction result is better.Optical system has added the consideration of double spherical screen in the optimal design process, effectively controlled the size of the curvature of field and distortion.Most of radius takes to bend towards the diaphragm design in the camera lens, because it is symmetry for enhanced system that radius adopts the purpose bend towards the diaphragm design, feasible chief ray and optical axis included angle by the diaphragm center reduced, thereby reduced with angle and increased the visual field higher order aberrations that causes, these have very significant improvement to the aberration that coma, astigmatism etc. is changed significantly with the visual field.The back group adopts asymmetric and cuts down the type object lens now, and is favourable to the vertical axial aberration that the negative preceding group of further elimination causes.Final system is near the accurate heart far away, and the face illuminance uniformity of elephant reaches more than 95%, has guaranteed the even imaging of projection screen.Screen radius and operating distance can be optimized selection when system in combination, further improve the projection picture element.
3, closely sphere imaging.The focal length of optical system can be by operating distance, pictcure generator size, screen size decision, and the focal length of the optical system of the utility model system is little, thereby can realize closely projection imaging.
4, manufacturing and processing cost are low.The objective lens design of the utility model system has mainly adopted ZK commonly used, ZF ordinary optical glass as raw material, and raw material is bought and camera lens processing all belongs to maturation process, and processing is simple, and is with low cost.
5, applied range.The front and back group is amplified in design process at interval, reserves sufficient space for being processed into the folding axle system.
Description of drawings
Fig. 1 is the utility model microspheric form curtain projection system relative position relation synoptic diagram;
Fig. 2 is the utility model microspheric form curtain projection system projection objective structural representation;
Fig. 3 is a projection objective design example synoptic diagram in the utility model microspheric form curtain projection objective;
Wherein: group first meniscus lens before the 1-, group second meniscus lens before the 2-, 3-middle groups cydariform negative lens, 4-middle groups cydariform positive lens, 5-sheet glass, 6-diaphragm, the positive back of 7-group first negative lens, the positive back of 8-group first positive lens, the positive back of 9-group positive lens, the positive back of 10-group second negative lens, the positive back of 11-group second positive lens, 12-pictcure generator, 13-projection objective, the 14-optical axis, 15-semispherical projection screen.
Embodiment:
A kind of microspheric form curtain projection system that is used for flight simulator, the semispherical projection screen, projection objective and the pictcure generator that comprise fixed measure, the screen of optical projection system and projection objective lens location relation are as Fig. 1, and wherein operating distance is that the object lens projector distance is adjustable in certain limit.The screen center of circle is by camera lens optical axis, and is axis of symmetry with the optical axis.The object lens enlargement ratio is by the decision of screen size and pictcure generator size and satisfy relation beta=y '/y (y ' be the screen opening size, y is the pictcure generator size).Projection objective comprises on the camera lens optical axis that is successively set between semispherical projection screen and the pictcure generator preceding group, middle groups, diaphragm and positive back group, preceding group comprises that total focal power is the meniscus lens group of negative value, the meniscus lens group is made up of preceding group first bent moon negative lens 1 and preceding group second bent moon negative lens 2, middle groups comprises middle groups cydariform negative lens 3 glued together and middle groups cydariform positive lens 4 and sheet glass 5, positive back group comprise total focal power on the occasion of objective lens, various ways can be arranged, such as a. Gauss objective half system of; B. dual system only, described only dual system comprises the form of connecting airtight of two single-positive-lens and just two gummeds; C. day plug object lens form and complicated, plug object lens shape generally comprised single just (just two gummed)+negative+just two gummeds in described day; D. three type structures and complicated, described three property structures generally are made of positive and negative positive three simple lenses.The utility model is preferably as follows scheme: positive back group comprises positive back group first negative lens 7 glued together and positive back group first positive lens 8, positive back group positive lens 9, positive back group second negative lens 10 and positive back group second positive lens 11 glued together.
In order to reduce volume or to adapt to the needs in place, can between preceding group and centre, one 45 degree completely reflecting mirror be set, form the folding axle system.
Table 1 is that the design philosophy according to the design has provided when the screen radius and is chosen between the 750mm-850mm, the design example of the example of operating distance between 500mm-550mm, the refractive index of each lens radius, thickness, airspace, optical material after its focal length normalization and abbe number such as table 1 are provided, sequence number relativeness such as Fig. 3, wherein: d
9=0.30+0.27, f=1mm, 2 ω=170 °, D/f=1/3.8, L
After=15.84mm.Whole projection objective has adopted 6 groups of 10 lens altogether, and maximum camera lens aperture is 70mm.
The parameter of the utility model system is as follows:
Full field angle: 2 ω=170 °; Relative aperture: D/f=1/3.8; Focal length: f=5.478mm; System's total length: L=130.67mm; Rear cut-off distance: L
After=15.84mm.
Table 1
The utility model principle: the utility model adopts the normal structure of fish-eye lens but simplifies relatively, belongs to the anti-image-forming objective lens category of dolly-out,ing dolly-back, and has comprised two big ingredients of component I and component I I.Wherein component I be called negative before group, group first bent moon and preceding group second bent moon totally two negative lenses before comprising, its function is the visual field of amplifying this optical system.Component I I comprises eight lens, wherein middle groups cydariform negative lens 3 and middle groups cydariform positive lens 4 gummeds are formed the middle groups drum lens, another lens are one flat plate glass, positive back group first negative lens 7 and positive back group first positive lens 8 glue together forms first lens of positive back group, also having lens is positive back group positive lenss 9, and positive back group second negative lens 10 and the positive back group second positive 11 gummed backs are as the 3rd lens of positive back group.The effect of component I I in system is to eliminate the various off-axis aberrations that component I is brought.
On the design's architecture basics, suitably improve the request for utilization that still can reach the design, but agent structure can not change, optical system after promptly improving is inevitable also naturalization to become two big components, preceding group must be the meniscus lens group of negative value for total focal power, back group must for focal power be on the occasion of objective lens, and available multiple other object lens forms of the part behind diaphragm replace.
Claims (10)
1. microspheric form curtain projection system that is used for flight simulator, the semispherical projection screen that comprises fixed measure, projection objective and pictcure generator, the described semispherical projection screen center of circle is an axis of symmetry by the camera lens optical axis of projection objective and with the optical axis, it is characterized in that: described projection objective comprises preceding group on the camera lens optical axis that is successively set between semispherical projection screen and the pictcure generator, middle groups, diaphragm (6) and positive back group, group comprises that total focal power is the meniscus lens group of negative value before described, described middle groups comprises drum lens and sheet glass (5), described positive back group comprise total focal power on the occasion of objective lens.
2. a kind of microspheric form curtain projection system that is used for flight simulator according to claim 1, it is characterized in that: the group first bent moon negative lens (1) and preceding group second bent moon negative lens (2) before group comprises before described, described middle groups comprise middle groups cydariform negative lens (3) glued together and middle groups cydariform positive lens (4), sheet glass (5).
3. a kind of microspheric form curtain projection system that is used for flight simulator according to claim 1 and 2 is characterized in that: described positive back group comprises positive back group first negative lens (7) glued together and just positive lens (9) is being organized in back group first positive lens (8), positive back, second positive lens (11) is organized in positive back group second negative lens (10) and positive back glued together.
4. a kind of microspheric form curtain projection system that is used for flight simulator according to claim 1 and 2 is characterized in that: described positive back group can adopt Gauss objective half system of.
5. a kind of microspheric form curtain projection system that is used for flight simulator according to claim 1 and 2, it is characterized in that: described positive back group can adopt only dual system, and described only dual system comprises the form of connecting airtight of two single-positive-lens and just two cemented objectives.
6. a kind of microspheric form curtain projection system that is used for flight simulator according to claim 1 and 2, its spy is characterised in that: described positive back group can adopt day a plug objective system and a derived type thereof, and described day plug objective system comprises single-positive-lens+negative object lens+just two cemented objectives of just two gummeds.
7. a kind of microspheric form curtain projection system that is used for flight simulator according to claim 1 and 2 is characterized in that: described positive back group can adopt three type structures, and described three type structures comprise by positive and negative positive three simple lenses.
8. microspheric form curtain projection system that is used for flight simulator, the semispherical projection screen that comprises fixed measure, projection objective and pictcure generator, the described semispherical projection screen center of circle is an axis of symmetry by the camera lens optical axis of projection objective and with the optical axis, it is characterized in that: described projection objective comprises preceding group that is successively set between semispherical projection screen and the pictcure generator, 45 degree completely reflecting mirrors, middle groups, diaphragm (6) and positive back group, group comprises that total focal power is the meniscus lens group of negative value before described, described middle groups comprises drum lens and sheet glass (5), described positive back group comprise total focal power on the occasion of objective lens.
9. a kind of microspheric form curtain projection system that is used for flight simulator according to claim 8 is characterized in that: group first bent moon negative lens (1) and preceding group second bent moon negative lens (2) before group comprises before described; Described middle groups comprises middle groups cydariform negative lens (3) glued together and middle groups cydariform positive lens (4), sheet glass (5); Described positive back group comprises positive back group first negative lens (7) glued together and just positive lens (9) is being organized in back group first positive lens (8), positive back, second positive lens (11) is organized in positive back group second negative lens (10) and positive back glued together.
10. it is characterized in that according to Claim 8 or 9 described a kind of microspheric form curtain projection systems that are used for flight simulator: described positive back group can adopt Gauss objective half system of, only dual system, day plug objective system or three type structures; Described only dual system comprises the form of connecting airtight of two single-positive-lens and just two cemented objectives; Described positive back group can adopt day a plug objective system and a derived type thereof; Described day plug objective system comprises single-positive-lens+negative object lens+just two cemented objectives of just two gummeds; Described three type structures comprise by positive and negative positive three simple lenses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200323747U CN201075146Y (en) | 2007-07-31 | 2007-07-31 | Minitype ball curtain projection system for flight simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200323747U CN201075146Y (en) | 2007-07-31 | 2007-07-31 | Minitype ball curtain projection system for flight simulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201075146Y true CN201075146Y (en) | 2008-06-18 |
Family
ID=39520405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200323747U Expired - Fee Related CN201075146Y (en) | 2007-07-31 | 2007-07-31 | Minitype ball curtain projection system for flight simulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201075146Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594572A (en) * | 2018-07-06 | 2018-09-28 | 刘武 | A kind of immersion hemispheric projection system |
-
2007
- 2007-07-31 CN CNU2007200323747U patent/CN201075146Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594572A (en) * | 2018-07-06 | 2018-09-28 | 刘武 | A kind of immersion hemispheric projection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7352340B2 (en) | Display system having a three-dimensional convex display surface | |
| CN107688227A (en) | Zoom lens and the image pick-up device including zoom lens | |
| CN107533215A (en) | Projection optics system and projecting apparatus | |
| CN110297308A (en) | Photographing optical lens group, image-taking device and electronic device | |
| CN106291887A (en) | A kind of fish eye lens | |
| CN109960020A (en) | Optical lens | |
| CN115793204B (en) | Six-piece-type micro fish-eye lens | |
| CN114488479B (en) | Industrial lens with large view field and high resolution front diaphragm | |
| CN214041889U (en) | Large-field-angle eyepiece optical system and head-mounted display device | |
| CN106501918A (en) | Projection device and projection lens | |
| CN106908940A (en) | The method of zoom lens, imaging device and manufacture zoom lens | |
| CN203337908U (en) | Eight-stack nine-patch digital short-focus projection lens infrastructure | |
| CN107490846A (en) | A kind of projection lens | |
| CN110376725A (en) | A kind of fish eye lens system | |
| CN101196608A (en) | Ultra-large field angle fisheye lens structure used for complete spherical dome-screen projection of digital projector | |
| CN208026983U (en) | Wide-aperture lens optical system without thermalization | |
| CN112764221B (en) | Eyepiece optical system with large field angle and head-mounted display device | |
| CN112630978B (en) | Eyepiece optical system with large field angle and head-mounted display device | |
| CN112630975B (en) | Eyepiece optical system with large field angle and head-mounted display device | |
| CN201075146Y (en) | Minitype ball curtain projection system for flight simulator | |
| CN204215094U (en) | Projection optics system and projection type video display device | |
| CN206362998U (en) | A kind of zoom lens | |
| CN107490843A (en) | A kind of intelligent interaction robot of day and night | |
| CN209356746U (en) | Imaging lens, imaging device and electronic equipment | |
| CN115236843B (en) | Zoom lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080618 Termination date: 20120731 |