CN102053293A - Optical prism and optical imaging system used thereby - Google Patents
Optical prism and optical imaging system used thereby Download PDFInfo
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- CN102053293A CN102053293A CN2010105755368A CN201010575536A CN102053293A CN 102053293 A CN102053293 A CN 102053293A CN 2010105755368 A CN2010105755368 A CN 2010105755368A CN 201010575536 A CN201010575536 A CN 201010575536A CN 102053293 A CN102053293 A CN 102053293A
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Abstract
The invention relates to an optical prism which is mainly characterized in that a reflecting film is added in a prism curved surface and a curved surface area with the reflection function, and ray loss because of limitation on rays in the reflection process is reduced, thus a better visual effect can be generated. The invention also relates to an optical imaging system comprising an image source and the optical prism, wherein a video signal output by various types of multimedia equipment adopting the image source is transmitted and reflected by the optical prism for multiple times; and the displayed image is larger than a real display screen, thus a picture system with a bigger view field and higher image quality can be effectively generated when the image is imaged.
Description
[technical field]
The present invention relates to a kind of optical element, especially be specifically related to a kind of system that uses this optical element imaging.
[background technology]
Show that from data optical imaging system is of a great variety.Glasses type displayer is wherein a kind of, and it is military upward demand at first and is applied to military.At first, just display is made helmet shape for being convenient for carrying and watching of display (especially aviation and " digital soldier ").Afterwards along with development has added lens to show virtual big image and to develop to the lightweight wear-type.Progressively grow up in the civilian goods commercialization afterwards, popular on a large scale along with the portable audio/video player provides the fertile soil of growth for the development of glasses type displayer.Along with development glasses type displayer differentiation and specialized, towards showing and integrative development of military affairs to high-resolution, towards civilian goods to lighting with specially to the different industries demand.
At present, the imaging process of optical imaging system on the market is that the image that shows shields big than actual displayed.Its feature: receive the vision signal of various multimedia equipment outputs, and be presented in the onlooker at the moment with the giant-screen form.
The spectacle virtual monitor is applied to a plurality of fields, as amusement, l-G simulation test etc., all is the visual field of wishing eyepiece be the bigger the better (enlargement ratio is high as far as possible).At present, in the light-duty eyepiece that adopts the free curved surface prism design, play the prism surface of reflex, often be subjected to the restriction of total reflection condition, can only be controlled in the condition of total reflection when making the light reflex, the loss of gloss rate can't continue to reduce, thereby influences the clear effect of imaging greatly.
[summary of the invention]
The present invention is based on prior art and improves, and purpose is to provide a kind of Design and Machining simple technology, makes optical imaging system realize big visual field effect.
To achieve the above object of the invention, the present invention has adopted following technical scheme:
A kind of optical prism, the workplace of described optical prism comprise first surface, second curved surface and the 3rd curved surface; First limit of described first surface is connected with first limit of second curved surface, second limit of the described first surface and second curved surface is connected with two relative edges of described the 3rd curved surface respectively, second limit of described first surface is the relative edge on first limit, and second limit of described second curved surface is the relative edge on first limit; Described first surface comprises first area and second area, and described first area is near an end of described the 3rd curved surface; There is reflectance coating the first area of described first surface.
In a preferred embodiment, on described second curved surface reflectance coating is arranged.
In a preferred embodiment, described reflectance coating is golden reflectance coating, silver-colored reflectance coating, aluminium mirror coating, copper reflectance coating, chromium reflectance coating, niobium reflectance coating, palladium reflectance coating, rhodium reflectance coating, silicon reflectance coating or titanium reflectance coating.
In a preferred embodiment, the material of described optical prism is optical glass or resin.
In a preferred embodiment, when effect of light during in described optical prism, described light at first acts on described the 3rd curved surface, and described the 3rd curved surface is a transmission plane, and described light imports described optical prism by described the 3rd curved surface; The light that described the 3rd curved surface imports, second curved surface of the described optical prism of first area reflection directive of the described first surface of process forms reflection for the second time; Described second curved surface is a reflecting surface, light through reflection for the second time after transmit by the second area of described first surface.
In a preferred embodiment, described the 3rd curved surface and second curved surface are the male type arcwall faces, and described first surface is the inner concave shape arcwall face.
In a preferred embodiment, the first area of described first surface and described second area are noncontinuous surface.
In a preferred embodiment, the first area of described first surface is circular, square, polygon or irregularly shaped.
A kind of optical imaging system comprises image source and optical prism, is provided with a slice optical prism and at least one image source at least in the described optical imaging system, and the workplace of described optical prism comprises first surface, second curved surface and the 3rd curved surface; Described first surface comprises first area and second area, and described first area is on the top of described first surface, and promptly near an end of image source, described the 3rd curved surface is a transmission plane, and described the 3rd curved surface is facing to described image source; There is reflectance coating the first area of described first surface.
In a preferred embodiment, the light that sends of described image source imports described optical prism by described the 3rd curved surface; The first surface of described optical prism is facing to the light recipient, the light that described the 3rd curved surface imports, and second curved surface through the described optical prism of first area reflection directive of described first surface forms reflection for the second time; Described second curved surface is reflecting surface, and described light is through reflection for the second time after by the second area transmission directive light recipient of described first surface.
The beneficial effect that the present invention brings is: owing to increased reflectance coating on prism curved surface with reflex or curvature portion zone, reduce light is subjected to total reflection condition in reflection process restriction, avoid the loss of light, thus make image through repeatedly reflection, still do not influence the display effect of image after the transmission.Design focal point of the present invention is to make image produce better visual effect.
[description of drawings]
Fig. 1 is that the light path of optical prism among the embodiment of the invention one and the embodiment four is moved towards synoptic diagram;
Fig. 2 a is in the embodiment of the invention two and the light path of embodiment four optical prisms is moved towards synoptic diagram;
Fig. 2 b is in the embodiment of the invention two and the light path of embodiment four optical prisms is moved towards synoptic diagram;
Fig. 3 a is in the embodiment of the invention three and the plated film synoptic diagram of embodiment four optical prism first surfaces;
Fig. 3 b is in the embodiment of the invention three and the plated film synoptic diagram of embodiment four optical prism first surfaces;
Fig. 3 c is in the embodiment of the invention three and the plated film synoptic diagram of embodiment four optical prism first surfaces.
[embodiment]
Below in conjunction with specific embodiment and accompanying drawing, the present invention will be described in detail.
Embodiment 1
As shown in Figure 1, three optical surfaces are arranged in the optical prism 10 of the present invention: first surface 11, second curved surface 12 and the 3rd curved surface 13.The optical prism 10 of present embodiment is to be limited to light after 13 transmissions of the 3rd curved surface, import in the optical prism 10, total reflection takes place during to the first area 111 of first surface 11 in light transmission, through second curved surface 12 total reflection takes place once more again, second area 112 transmissions via first surface 11 at last inject to outside the optical prism 10, i.e. the light recipient.Have the reflex surface in the optical prism 10 and have two: the first surface 11 and second curved surface 12.Wherein 12 on second curved surface plays reflex; And first surface 11 should play reflex, plays the transmission effect again, 111 reflexs in the first area of first surface 11 wherein, and second area 112 plays the transmission effect.In the present embodiment, on the first area 111 of optical prism 10 first surfaces 11 and the 3rd curved surface 13 reflectance coating is arranged.
The first surface 11 of optical prism 10 and second curved surface 12 are when carrying out total reflection in the present embodiment, and in the prior art, twice above-mentioned total reflection all needs to satisfy total reflection condition and could realize.The condition of total reflection: 1. light transmits to low refractive index dielectric from high refractive index medium; 2. the incident angle of light is greater than the cirtical angle of total reflection.Wherein, condition 1 can satisfy certainly, and condition 2 needs special control just can be met.In actual effect of light, only control the state that has reached the limit, and under present technical background, the image effect of generation is difficult to improve again from the light source.As can be seen from Figure 1, effect of light is when first surface 11, and light is the closer to the top of optical prism 10, and incident angle is more little, also with regard to the difficult more total reflection condition that reaches.And transmitted ray concentrates on the second area 112 of first surface 11 just, promptly realizes the part of total reflection condition easily.This has just had very big restriction to optical prism 10 surperficial face types.Present embodiment is outside first surface 11 regional transmissions, and promptly the first area 111, and the plating reflectance coating has been avoided the restriction of total reflection condition in optical prism 10 design processes.Similarly, when total reflection took place second curved surface 12, because second curved surface 12 only needs to play the total reflection effect and gets final product, present embodiment plated reflectance coating on second curved surface 12.The design of present embodiment can be decontroled the degree of freedom of optical prism 10 first surfaces 11 and second curved surface, 12 surperficial face types to a greater extent.Simultaneously, the design of plating reflectance coating has reduced the loss of light.
The reflectance coating that uses in the present embodiment can be that present technology is best, such as golden reflectance coating, silver-colored reflectance coating, aluminium mirror coating, copper reflectance coating, chromium reflectance coating, niobium reflectance coating, palladium reflectance coating, rhodium reflectance coating, silicon reflectance coating or titanium reflectance coating.The optical prism 10 of present embodiment can be to be made by optical glass or resin or the like material.
In the present embodiment, second curved surface 12 and the 3rd curved surface 13 of optical prism 10 can be the male type arcwall faces, and first surface 11 can be the inner concave shape arcwall face.
Embodiment 2
The design proposal of present embodiment and embodiment 1 is basic identical, concrete difference is: because the first area 111 of the first surface 11 of optical prism 10 is coated with reflectance coating, this zone is not subjected to the restriction of total reflection condition, this region design can also be with second area 112 are noncontinuous surfaces, shown in Fig. 2 a and Fig. 2 b.The first area 111 of first surface 11 can be that plane, inner concave shape or other are irregularly shaped.The adjustment of first area 111 is mainly according to the position of light source points, the light that the reflection that this design can maximal condition is sent.
Embodiment 3
The design proposal of present embodiment and embodiment 1,2 is basic identical, concrete difference is: be coated with reflectance coating on the first area 111 of first surface 11, main effect is in order to make light total reflection to the second curved surface 12, therefore, this region design can be according to the scope adjustment region shape of effect of light, such as circular, square, polygon or irregularly shaped, see also Fig. 3 a, Fig. 3 b and Fig. 3 c.
The optical imaging system of present embodiment comprises image source 20 and optical prism 10, and wherein the design proposal of optical prism 10 and embodiment's 1,2,3 is basic identical, and the light in the present embodiment is provided by image source 20.The optical imaging system of present embodiment is to utilize curved surface prism to realize that optics amplifies.As Fig. 1, promptly among the embodiment in the optical imaging system light path of image move towards synoptic diagram.The optical imaging system of present embodiment produces the picture system of bigger visual field, higher picture element effectively during image imaging.
Optical imaging system in the present embodiment can also comprise the syndeton of data transmission device and the image source and the optical prism support of optical prism support, image source 10.
Above-described embodiment is described preferred implementation of the present invention; be not that design of the present invention and protection domain are limited; under the prerequisite that does not break away from design concept of the present invention; various modification and improvement that those skilled in the art make technical scheme of the present invention all should fall into protection scope of the present invention.
Claims (16)
1. an optical prism is characterized in that, the workplace of described optical prism comprises first surface, second curved surface and the 3rd curved surface; First limit of described first surface is connected with first limit of second curved surface, second limit of the described first surface and second curved surface is connected with two relative edges of described the 3rd curved surface respectively, second limit of described first surface is the relative edge on first limit, and second limit of described second curved surface is the relative edge on first limit; Described first surface comprises first area and second area, and described first area is near an end of described the 3rd curved surface; There is reflectance coating the first area of described first surface.
2. optical prism according to claim 1 is characterized in that, on described second curved surface reflectance coating is arranged.
3. optical prism according to claim 1 and 2 is characterized in that, described reflectance coating is golden reflectance coating, silver-colored reflectance coating, aluminium mirror coating, copper reflectance coating, chromium reflectance coating, niobium reflectance coating, palladium reflectance coating, rhodium reflectance coating, silicon reflectance coating or titanium reflectance coating.
4. optical prism according to claim 1 is characterized in that, the material of described optical prism is optical glass or resin.
5. optical prism according to claim 1, it is characterized in that when effect of light during in described optical prism, described light at first acts on described the 3rd curved surface, described the 3rd curved surface is a transmission plane, and described light imports described optical prism by described the 3rd curved surface; The light that described the 3rd curved surface imports, second curved surface of the described optical prism of first area reflection directive of the described first surface of process forms reflection for the second time; Described second curved surface is a reflecting surface, light through reflection for the second time after transmit by the second area of described first surface.
6. according to claim 1 or 2 or 5 described optical prisms, it is characterized in that described the 3rd curved surface and second curved surface are the male type arcwall faces, described first surface is the inner concave shape arcwall face.
7. optical prism according to claim 1 is characterized in that, the first area of described first surface and described second area are noncontinuous surface.
8. optical prism according to claim 1 is characterized in that, the first area of described first surface is circular, square, polygon or irregularly shaped.
9. optical imaging system, comprise image source and optical prism, it is characterized in that be provided with a slice optical prism and at least one image source at least in the described optical imaging system, the workplace of described optical prism comprises first surface, second curved surface and the 3rd curved surface; Described first surface comprises first area and second area, and described first area is on the top of described first surface, and promptly near an end of image source, described the 3rd curved surface is a transmission plane, and described the 3rd curved surface is facing to described image source; There is reflectance coating the first area of described first surface.
10. optical imaging system according to claim 9 is characterized in that, on described second curved surface reflectance coating is arranged.
11. according to claim 9 or 10 described optical imaging systems, it is characterized in that described reflectance coating is golden reflectance coating, silver-colored reflectance coating, aluminium mirror coating, copper reflectance coating, chromium reflectance coating, niobium reflectance coating, palladium reflectance coating, rhodium reflectance coating, silicon reflectance coating or titanium reflectance coating.
12. optical imaging system according to claim 9 is characterized in that, the material of described optical prism is optical glass or resin.
13. optical imaging system according to claim 9 is characterized in that, the light that described image source is sent imports described optical prism by described the 3rd curved surface; The first surface of described optical prism is facing to the light recipient, the light that described the 3rd curved surface imports, and second curved surface through the described optical prism of first area reflection directive of described first surface forms reflection for the second time; Described second curved surface is reflecting surface, and described light is through reflection for the second time after by the second area transmission directive light recipient of described first surface.
14., it is characterized in that described the 3rd curved surface and second curved surface are the male type arcwall faces according to claim 9 or 10 or 13 described optical imaging systems, described first surface is the inner concave shape arcwall face.
15., it is characterized in that the first area of described first surface and described second area are noncontinuous surface according to claim 9 or 10 or 13 described optical imaging systems.
16., it is characterized in that the first area of described first surface is circular, square, polygon or irregularly shaped according to claim 9 or 10 or 13 described optical imaging systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105755368A CN102053293A (en) | 2010-08-27 | 2010-12-07 | Optical prism and optical imaging system used thereby |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010263783 | 2010-08-27 | ||
| CN201010263783.4 | 2010-08-27 | ||
| CN2010105755368A CN102053293A (en) | 2010-08-27 | 2010-12-07 | Optical prism and optical imaging system used thereby |
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| CN102053293A true CN102053293A (en) | 2011-05-11 |
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| CN2010105755368A Pending CN102053293A (en) | 2010-08-27 | 2010-12-07 | Optical prism and optical imaging system used thereby |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102402005A (en) * | 2011-12-06 | 2012-04-04 | 北京理工大学 | Bifocal-surface monocular stereo helmet-mounted display device with free-form surfaces |
| TWI563287B (en) * | 2015-06-22 | 2016-12-21 | Shih Yen Lo | Light deflector |
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| CN101034206A (en) * | 2006-03-09 | 2007-09-12 | 比亚迪股份有限公司 | Optical imaging system for helmet display |
| CN101097293A (en) * | 2006-06-29 | 2008-01-02 | 贾怀昌 | Freely curved face total reflection type visual optical edge glass and emergent light axis depth of parallelism regulating mechanism thereof |
| CN101359089A (en) * | 2008-10-08 | 2009-02-04 | 北京理工大学 | Optical system of light and small-sized big angular field free curved surface prism helmet display |
| CN201242611Y (en) * | 2008-08-12 | 2009-05-20 | 贾怀昌 | Free curved surface perfect reflection type unaided eye optical prism |
| CN201302624Y (en) * | 2008-10-16 | 2009-09-02 | 贾怀昌 | Mini-glasses monitor |
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2010
- 2010-12-07 CN CN2010105755368A patent/CN102053293A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101034206A (en) * | 2006-03-09 | 2007-09-12 | 比亚迪股份有限公司 | Optical imaging system for helmet display |
| CN101097293A (en) * | 2006-06-29 | 2008-01-02 | 贾怀昌 | Freely curved face total reflection type visual optical edge glass and emergent light axis depth of parallelism regulating mechanism thereof |
| CN201242611Y (en) * | 2008-08-12 | 2009-05-20 | 贾怀昌 | Free curved surface perfect reflection type unaided eye optical prism |
| CN101359089A (en) * | 2008-10-08 | 2009-02-04 | 北京理工大学 | Optical system of light and small-sized big angular field free curved surface prism helmet display |
| CN201302624Y (en) * | 2008-10-16 | 2009-09-02 | 贾怀昌 | Mini-glasses monitor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102402005A (en) * | 2011-12-06 | 2012-04-04 | 北京理工大学 | Bifocal-surface monocular stereo helmet-mounted display device with free-form surfaces |
| CN102402005B (en) * | 2011-12-06 | 2015-11-25 | 北京理工大学 | Bifocal-surface monocular stereo helmet-mounted display device with free-form surfaces |
| TWI563287B (en) * | 2015-06-22 | 2016-12-21 | Shih Yen Lo | Light deflector |
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Open date: 20110511 |