CN1916684A - Anamorphic imaging device of cone reflector in use for projecting, imaging method, and application - Google Patents
Anamorphic imaging device of cone reflector in use for projecting, imaging method, and application Download PDFInfo
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- CN1916684A CN1916684A CN200610015605.3A CN200610015605A CN1916684A CN 1916684 A CN1916684 A CN 1916684A CN 200610015605 A CN200610015605 A CN 200610015605A CN 1916684 A CN1916684 A CN 1916684A
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- cone face
- face catoptron
- catoptron
- imaging device
- convex
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Abstract
A distortion imaging device prepared by conical surface reflector used in projection utilizes concave conical surface reflector and convex conical surface reflector to form single direction of Galileo telescope system to make projected image be compressed or enlarged in single direction mode. It is featured as preparing two said reflectors by plating film on flexible thin plate made of Yakeli material, enabling to regulate surface form of two said reflectors from plane to parabolic cylindrical surface then to parabolic conical surface as well as enabling to regulate pitch angle and distance of two said reflectors.
Description
Technical field
The present invention relates to the projection imaging technology, particularly a kind of projection conical reflector distortion imaging device and formation method and application thereof, realize image is done unidirectional compression or amplification with simple design proposal, can obtain special applications in fields such as geometrical optics instruments used for education.
Background technology
Optics is the substance in the science and engineering university physics teaching material, adopt basic law that the rectilinear propagation conceptual approach light of light propagates and light by optical system imaging principle and the geometrical optics of application because of its practicality and be used as the basis of applied optics.Spherical lens, cylindrical lens, optical element such as prism and plane mirror is studied clear because level of processing is high with being widely used already, but non-spherical lens, imaging problem such as the nonplanar various catoptrons of aspheric surface, because difficult processing, it is special to use, and people are not enough to the research of these optical elements and optical phenomena.
At present, development along with digital process technology, the level of processing of non-spherical lens has improved, and the various optical articles of having used non-spherical lens get more and more, and cylindrical lens is at the wide-screen projection lens, ophthalmological instrument, there is special applications in fields such as laser beam expanding, parabolic mirror emitter and focalizer, stainless steel cylinder catoptric imaging, distorting mirror imaging etc. is the interesting geometrical optics phenomenon that daily people saw, but these contents are difficult to find trace in existing optics teaching material.
Summary of the invention
The objective of the invention is to propose a kind of projection conical reflector distortion imaging device and formation method and application thereof, realize projected image is done unidirectional compression or amplification with simple design proposal, for imaging problem such as the nonplanar various catoptrons of research aspheric surface provide laboratory facilities, provide reference for designing new optical instrument principle of work, especially can obtain special applications in fields such as geometrical optics instruments used for education.
Projection provided by the invention comprises with conical reflector distortion imaging device: concave cone face catoptron, convex cone face catoptron, chute, pole, base, screw and adjusting bracket; Wherein convex cone face catoptron is fixed on a end on the adjusting bracket with screw, and concave cone face catoptron can move then along the chute of adjusting bracket and fixes with screw.Adjusting bracket is connected with base with pole.Face shape, orientation and the spacing of concave cone face catoptron and convex cone face catoptron can be regulated, and constitute a kind of unidirectional Galileo telescope system, and its function is that projected image is done unidirectional compression or amplification.
Described concave cone face catoptron and convex cone face catoptron are made of advanced material acrylic flexible thin plated film, are processed into adjusting bracket with the pattern top board; Adjusting bracket can realize reflecting mirror surface shape from the plane to the adjusting of parabolic cylinder to the parabolic conical surface, also can realize the luffing angle of concavo-convex two minute surfaces and the adjusting of spacing.
Upwards determined by the ratio of concave cone face catoptron mean radius of curvature and convex cone face catoptron mean radius of curvature and the spacing of two concavo-convex conical reflectors by compression or amplification multiple at folk prescription for final image.
Described adjusting bracket material can be metal framework, plastic frame, wood frame or metal and plastics unitized construction.
Described projection is to be used in geometrical optics instruments used for education or ultra-thin back projection TV etc. with the application of conical reflector distortion imaging device.
Technological core of the present invention is that employing concave cone face catoptron and convex cone face catoptron are right, constitutes folk prescription to the Galileo telescope system, adds to be inserted between projector and the screen, makes projected image do unidirectional recompression of distortion or amplification, but more clearly imaging.
Use the formation method of projection with conical reflector distortion imaging device: step 1, open projector's projected images, focusing, it is clear to make it on screen imaging.Step 2 is placed concave cone face catoptron before projector, regulate the face shape and the luffing angle of concave cone face catoptron, puts screen in projector's back upper place certain bits and obtains the clear and unsharp projection of horizontal direction of vertical direction.Step 3, before concave cone face catoptron, place convex cone face catoptron again, the screen of step 1 is moved forward the spacing of 2 times concave cone face catoptron and convex cone face catoptron, regulate the face shape and the luffing angle of convex cone face catoptron, make image all clear on level and vertical both direction again.
Light path principle of the present invention is described below: when not placing conical reflector distortion imaging device of the present invention, regulate projector's focal length, project on the screen with making clear picture.Place conical reflector distortion imaging device of the present invention, the light beam that sends from projector incides on the concave cone face catoptron with certain subtended angle, folded light beam is pointed to other specific direction, original imaging relations is destroyed, in different positions, therefore can not obtain distinct image along the both direction imaging surface of cone element direction and vertical cone element.When folded light beam reenters (cone element of convex cone face catoptron is parallel with concave cone face catoptron cone element) when being mapped on the convex cone face catoptron, can turn back light beam on the screen.Screen is moved the spacing of about 2 times concave cone face catoptron and convex cone face catoptron to projector's direction, the catadioptric process of on the parallel cone element direction of screen, light path being regarded as plane mirror, obtaining the original image of going back with original image constant amplitude with the aplanatism position of originally not placing apparatus of the present invention, and on the vertical cone element direction of screen, obtaining distorted image than original compression of images or amplification.Overlapping once more as the plane of these two vertical direction is so more clearly imaging.Face shape, orientation and the spacing of concave cone face catoptron and convex cone face catoptron can be regulated, and constitute a kind of unidirectional Galileo telescope system.Concave cone face catoptron is regarded as the convergence cylindrical lens, convex cone face catoptron is regarded as and is dispersed cylindrical lens, each reflection can be applied mechanically folk prescription and be obtained image distance to the thin lens imaging formula, though imaging is perfect inadequately, image also more clearly is projected on the screen.
Compared with the prior art the present invention has following advantage:
1,, can realize that the concave cone face catoptron of unidirectional Galileo telescope principle and convex cone face catoptron are to imaging because light path design of the present invention.Because also be difficult to find the report as the theoretical and experimental study of conical reflector imaging aspect, the present invention has proposed new theoretical research problem and laboratory facilities for the optics worker.
2, because structural design of the present invention can make face shape, luffing angle and the spacing of concave cone face catoptron and convex cone face catoptron regulate.Existing optical glass device does not have the adjustable character of face shape, and the development of large tracts of land magnetron sputtering technology now, advanced acrylic plated film industrial products are a lot, can plate out the flexible board high reflective mirror with acrylic, for realization of the present invention provides the basic guarantee on the material.
3, because device of the present invention design can or be amplified a lot of entertaining deformation patterns the compression of projected image distortion ground.Existing Experiment of College Physics content nearly all is the experiment of checking property, because principle and phenomenon are all not clear, is instruments used for education with this device, can develop the research geometrical optics experiment that makes new advances.
Description of drawings
Fig. 1 side-looking light path of the present invention synoptic diagram.
Look the light path synoptic diagram on Fig. 2 is of the present invention.
Fig. 3 adjusting bracket schematic perspective view of the present invention.
Fig. 4 gridiron pattern image pattern.
Fig. 5 utilizes checkerboard image design sketch of the present invention.
Fig. 6 checkerboard image convex cone face catoptron figure.
Fig. 7 concave cone face catoptron gridiron pattern image pattern.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Referring to Fig. 1 and Fig. 2, a principle specific embodiment of the present invention.Selecting subtended angle for use is that the thing light source is done, imaging screen P by the projector of A
0With the distance of projector be L
0The radius-of-curvature at concave cone face catoptron middle part is R
Recessed, the distance that is placed on screen is L
1The position, the elevation angle is B, throws into P above the projector on the vertical cone element direction image being assembled
1Position, image distance are L
1'.The radius-of-curvature at convex cone face catoptron middle part is R
Protruding, being placed on concave cone face catoptron distance and being the position of d, the elevation angle is B, object distance L
2=L
1'-d, catoptric imaging is at P
2Position, image distance are L
2'.P
0P
2Distance approximates 2d.Do not consider symbolic rule, twice catoptric imaging principle expression formula is as follows.
(1/L
1')+(1/L
1)=1/f
Recessed=2/R
Recessed
(1/L
2')+(1/L
2)=1/f
Protruding=2/R
Protruding
Owing to be the off axis reflector of aspheric surface nonplanar reflector, can cause multiple phenomenons such as filed curvature pincushion distortion arc distortion, the present invention is intended to manage to improve image quality with conical reflector rather than cylindrical mirror.Referring to Fig. 1, in the present embodiment, the conical reflector bus is in vertical plane, and this direction can be regarded as the catadioptric imaging of plane mirror, image height H
0=H
2Referring to Fig. 2, image width is W
0P
0Place's image is assembled by concave cone face catoptron earlier and is imaged on P
1It is W that the position becomes image width
1Image, P
1Place's image is dispersed by convex cone face catoptron and is imaged on P
2The position becomes image width W
2Image.Regulate concavo-convex conical reflector right face shape and spacing, can obtain various compression (W
2＜W
0), constant amplitude (W
2=W
0) and amplify (W
2＞W
0) image.One group of concrete light path data of present embodiment are as follows: establishing original picture length breadth ratio is 4/3, the projected light beam subtended angle A that projector sends
Level=20 °, A
Vertically=15 °, throw L
0=1800mm, imaging width W on screen
0=620mm, height H
0=465mm.Concave cone face catoptron is apart from the 300mm of projector, elevation angle B
1=15 °, to screen distance L
1=1500mm, concave cone face reflecting mirror focal length f
1=(500 ± 50) mm, compression image-forming range L
1=(750 ± 50) mm, the imaging width W
1=310mm, height H
1=270mm.Convex cone face catoptron and concave cone face catoptron be apart from d=200mm, elevation angle B
2=-15 °, convex cone face reflecting mirror focal length f
2=(380 ± 20) mm, virtual object is apart from L
2=550mm, the amplification imaging distance L
2=(1250 ± 50) mm, the imaging width W
2=700mm, height H
2=465mm.
Referring to Fig. 3, conical reflector distortion imaging device is made of concave cone face catoptron 1 and adjusting bracket 2 and convex cone face catoptron 3, one of them convex cone face catoptron end that is fixed on the adjusting bracket, the face shape of concave cone face catoptron and convex cone face catoptron is regulated with screw 4, and another concave cone face catoptron can move along the chute on the adjusting bracket 5, regulates the back and fixes with screw.Adjusting bracket is connected with base 7 with pole 6.The principle that concavo-convex conical reflector adjusting bracket is made is: the size of two conical reflectors and spacing are determined according to the subtended angle that projector sends light beam, the adjusting bracket structure is not blocked incident beam with convex cone face catoptron, and it is precondition that concave cone face catoptron does not block outgoing beam.The adjusting bracket material can be a metal framework, also can be plastic frame, more can be metal and plastics unitized construction.One group of concrete structure data of present embodiment adjusting bracket are as follows: concave cone face catoptron sectional dimension 180 * 180mm, convex cone face catoptron sectional dimension 180 * 180mm, disregard support, framework length and width height (LWH) size 250 * 200 * 300mm, concave cone face mirror curvature radius R
Recessed=(1000 ± 100) mm, convex cone face mirror curvature radius R
Protruding=(750 ± 50) mm.Though adjusting bracket length is fixing, the spacing of two concavo-convex conical reflectors can be regulated between 180 to 220mm.Two top and bottom radius of curvature R that concavo-convex conical reflector is right
On recessedAnd R
Recessed, R
On protrudingAnd R
Under protrudingCan be that infinitely-great plane is regulated between the curved surface of R=500mm from radius.Handle assembly turns to, and the position of two concave cone face catoptrons and convex cone face catoptron can exchange.
Use the present invention can obtain the checkerboard image design sketch, Fig. 4 gridiron pattern image pattern.Fig. 5 utilizes gridiron pattern imaging effect figure of the present invention.Fig. 6 checkerboard image convex cone face catoptron figure.Fig. 7 concave cone face catoptron gridiron pattern image pattern.
The cross-hatch pattern picture that draws in computer is shown out with projector, obtains the cross-hatch pattern picture given as Fig. 4 by abovementioned steps 1.Before projector, place device of the present invention, obtain the gridiron pattern distortion imaging effect figure given as Fig. 5 by abovementioned steps 2-3.Before projector, place convex cone face catoptron separately and obtain cross-hatch pattern picture such as Fig. 6.Before projector, place concave cone face catoptron separately and obtain cross-hatch pattern picture such as Fig. 7.
Cross-hatch pattern is changed the picture (personage or animal) of doing other show out once again through apparatus of the present invention, resulting distorted image is very witty, and is suitable with the distorting mirror effect.
From principle of the present invention, can design the optics that makes new advances, obtain potential application in fields such as geometrical optics instruments used for education or ultra-thin back projection TVs.Adopt device of the present invention, can on the geometrical optics experiment classroom, demonstrate a lot of entertaining imaging phenomenons, perhaps find new research topic for ancient geometrical optics.Adopt device of the present invention,, can do the large screen back projection televisor very thinly through design cleverly.
Claims (7)
1, a kind of projection is characterized in that it comprises: concave cone face catoptron, convex cone face catoptron, chute, pole, base, screw and adjusting bracket with conical reflector distortion imaging device; Convex cone face catoptron is fixed on a end on the adjusting bracket with screw, and concave cone face catoptron moves along the chute on the adjusting bracket; Adjusting bracket is connected with base with pole; Face shape, orientation and the spacing of concave cone face catoptron and convex cone face catoptron can be regulated, and constitute a kind of unidirectional Galileo telescope system, so that projected image is done unidirectional compression or amplification.
2, projection according to claim 1 is characterized in that with conical reflector distortion imaging device: adjusting bracket to reflecting mirror surface shape from the plane to the adjusting of parabolic cylinder to the parabolic conical surface, or the adjusting of the luffing angle of concavo-convex two minute surfaces and spacing.
3, projection according to claim 1 conical reflector distortion imaging device, it is characterized in that: the position of described two concave cone face catoptrons and convex cone face catoptron can exchange.
4, projection according to claim 1 conical reflector distortion imaging device, it is characterized in that: concave cone face catoptron and convex cone face catoptron are made of acrylic flexible thin plated film, are processed into adjusting bracket with the pattern top board
5, projection according to claim 1 conical reflector distortion imaging device, it is characterized in that: the adjusting bracket material can be metal framework, plastic frame or metal and plastics unitized construction.
6, a kind of projection formation method of conical reflector distortion imaging device is characterized in that the step that comprises:
1) open projector's projected images, focusing, it is clear to make it on screen imaging;
2) before projector, place concave cone face catoptron, regulate the face shape and the luffing angle of concave cone face catoptron, put screen in projector's back upper place certain bits and obtain the clear and unsharp projection of horizontal direction of vertical direction;
3) before concave cone face catoptron, place convex cone face catoptron again, the screen of step 1) is moved forward the spacing of 2 times concave cone face catoptron and convex cone face catoptron, regulate the face shape and the luffing angle of convex cone face catoptron, make image all clear on level and vertical both direction again.
7, the described projection of claim 1 is characterized in that: be used in geometrical optics instruments used for education or ultra-thin back projection TV with the application of conical reflector distortion imaging device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100156053A CN100426034C (en) | 2006-09-07 | 2006-09-07 | Anamorphic imaging device of cone reflector in use for projecting, imaging method, and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100156053A CN100426034C (en) | 2006-09-07 | 2006-09-07 | Anamorphic imaging device of cone reflector in use for projecting, imaging method, and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1916684A true CN1916684A (en) | 2007-02-21 |
| CN100426034C CN100426034C (en) | 2008-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100156053A Expired - Fee Related CN100426034C (en) | 2006-09-07 | 2006-09-07 | Anamorphic imaging device of cone reflector in use for projecting, imaging method, and application |
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| Country | Link |
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| CN (1) | CN100426034C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014015455A1 (en) * | 2012-07-23 | 2014-01-30 | 神画科技（深圳）有限公司 | Externally attached reflecting device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2058997U (en) * | 1989-11-15 | 1990-07-04 | 王典民 | Anamorphotic lens |
| CN2158098Y (en) * | 1993-05-07 | 1994-03-02 | 张渭熊 | Display device for large screen colour advertisement |
| CN2490604Y (en) * | 2001-07-05 | 2002-05-08 | 吴庆富 | Double-projection error compensation plate for rear-projection system |
| JP4029154B2 (en) * | 2003-06-17 | 2008-01-09 | 株式会社ニコン | projector |
| CN1627122A (en) * | 2003-12-11 | 2005-06-15 | 陈衡岳 | Equipment and method for forming reformatted pattern to original pattern by using bent reflecting surface |
| CN200989958Y (en) * | 2006-09-07 | 2007-12-12 | 河北工业大学 | Conic reflector distorted image device for projection use |
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2006
- 2006-09-07 CN CNB2006100156053A patent/CN100426034C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014015455A1 (en) * | 2012-07-23 | 2014-01-30 | 神画科技（深圳）有限公司 | Externally attached reflecting device |
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| CN100426034C (en) | 2008-10-15 |
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Granted publication date: 20081015 |