CN201897658U - Ellipsoid/spherical surface combined optical system - Google Patents
Ellipsoid/spherical surface combined optical system Download PDFInfo
- Publication number
- CN201897658U CN201897658U CN2010205506799U CN201020550679U CN201897658U CN 201897658 U CN201897658 U CN 201897658U CN 2010205506799 U CN2010205506799 U CN 2010205506799U CN 201020550679 U CN201020550679 U CN 201020550679U CN 201897658 U CN201897658 U CN 201897658U
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- ellipsoid
- reflector
- spherical surface
- optical system
- spherical reflector
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Abstract
The utility model belongs to the field of optical systems, in particular relates to an ellipsoid/spherical surface combined optical system capable of improving the utilization ratio of optical energy; the ellipsoid/spherical surface combined optical system comprises an ellipsoid reflector (1) and a spherical surface reflector (2), wherein the optical axes of the ellipsoid reflector (1) and the spherical surface reflector (2) are superposed, the center of sphere of the spherical surface reflector (2) and a first focal point (F201) of the ellipsoid reflector (1) are superposed; the bottom of the spherical surface reflector (2) is provided with a center hole (3); the surface flatness of the ellipsoid reflector (1) and the spherical surface reflector (2) is equal to and smaller than 50mum; and the inner surfaces of the ellipsoid reflector (1) and the spherical surface reflector (2) are plated with optical cold reflective film coatings (5). The ellipsoid/spherical surface combined optical system has a simple structure, can obviously improve the utilization ratio of the optical energy, and avoids generating stray light.
Description
Technical field
The utility model belongs to field of optical systems, relates in particular to a kind of ellipsoid/sphere combinative optical system that can promote optical energy utilization efficiency.
Background technology
Ellipsoidal mirror is a modal light collecting element in the optical system, and its ability of collecting light directly has influence on the efficient that optical system is utilized luminous energy.
One pointolite is placed on inside surface is coated with on first focal point F 201 of ellipsoidal mirror of catoptrics film, the light that light source sends through inside surface reflection post-concentration at second focal point F, 202 places.(see figure 1) is utilized this characteristics, and the ellipsoidal mirror optical system can promote the light source optical energy utilization efficiency.
As can be seen from Figure 1, ellipsoidal mirror utilizes the ability of luminous energy to depend on the size of effective wrapping angle α, and the light in this scope could be focused at the F202 place effectively, and another part then can't effectively utilize without the light (direct light) of reflective mirror reflection.In optical system, this part light not only loses in vain, also can produce parasitic light, directly influences optical effect.
Wanting more effectively to utilize luminous energy, the most direct way is to increase effective wrapping angle α, and this just requires to continue to increase the degree of depth of reflective mirror, but this is coated with very difficult realization the on the optical coating in aspherics processing and surface.
The utility model content
The utility model is intended to overcome the deficiencies in the prior art part and provides a kind of simple in structure, can significantly improve the utilization ratio of luminous energy, avoids producing the ellipsoid/sphere combinative optical system of parasitic light.
For achieving the above object, the utility model is achieved in that
A kind of ellipsoid/sphere combinative optical system, it comprises ellipsoidal mirror and spherical reflector; The optical axis coincidence of described ellipsoidal mirror and spherical reflector; The centre of sphere of described spherical reflector overlaps with first focus of ellipsoidal mirror; Bottom at described spherical reflector is provided with center pit.
The surface precision of ellipsoidal mirror described in the utility model and spherical reflector≤50 μ m.
Utilize the optical characteristics of ellipsoidal mirror and spherical reflector, the two is made up under certain condition, can solve the utilization ratio problem of luminous energy effectively.
Under the situation of ellipsoidal mirror and spherical reflector optical axis coincidence, if first focal point F 201 of the centre of sphere of spherical reflector and ellipsoidal mirror also overlaps, and the spherical reflector bottom has the center pit of certain size, so a pointolite is placed on the F201 place, the direct light that light source produces is not only avoided, but also can recycle by the spherical mirror reflection effectively.
Compare with single ellipsoidal mirror, the design different size ellipsoidal reflector and the unitized construction of spherical mirror, the light flux values of elevator system that can be in various degree, lifting light source utilization ratio.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.Protection domain of the present utility model not only is confined to the statement of following content.
Fig. 1 is the ellipsoidal mirror optical schematic diagram;
Fig. 2 is the spherical reflector optical schematic diagram;
Fig. 3 is an one-piece construction synoptic diagram of the present utility model;
Fig. 4 is the utility model irradiance;
Fig. 5 is a single ellipsoidal mirror illumination.
Among the figure: 1 is ellipsoidal mirror; 2 is spherical reflector; 3 is center pit; 4 is light source; 5 is the cold reflective membrane coating of optics.
Embodiment
Referring to shown in Figure 3, ellipsoid/sphere combinative optical system, it comprises ellipsoidal mirror 1 and spherical reflector 2; The optical axis coincidence of described ellipsoidal mirror 1 and spherical reflector 2; The centre of sphere of described spherical reflector 2 overlaps with first focal point F 201 of ellipsoidal mirror 1; Be provided with center pit 3 in the bottom of described spherical reflector 2.
One pointolite is placed on the centre of sphere place that inside surface is coated with the spherical reflector of cold emission optical thin film, and the light that light source sends still returns the centre of sphere after the reflection of spherical reflector inside surface.(seeing Fig. 2 and Fig. 3)
The light that sends by light source, a part reflects post-concentration at the F202 place through ellipsoidal mirror 1, another part direct irradiation is on spherical reflector 2, and this part light passes centre of sphere F201 after reflection and is radiated on the ellipsoidal mirror, is focused at the F202 place through reflection again.
The conclusion checking:
Ellipsoidal mirror parameter: a=50mm, b=40mm, c=30mm bottom diameter=27mm, outer bore=80mm;
Spherical reflector parameter: r=55.5mm; Bottom diameter=19.8mm; Collar extension diameter=93.4mm;
Use 10W, radius 1mm spherical point light source, 1000 light to carry out sunykatuib analysis, use optical screen to receive at the F202 place.
Two kinds of structure auxilliary illumination contrasts at the second focus place:
Be with being appreciated that, more than about specific descriptions of the present utility model, only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as satisfy, all within protection domain of the present utility model.
Claims (3)
1. ellipsoid/sphere combinative optical system is characterized in that, comprises ellipsoidal mirror (1) and spherical reflector (2); The optical axis coincidence of described ellipsoidal mirror (1) and spherical reflector (2); The centre of sphere of described spherical reflector (2) overlaps with first focus (F201) of ellipsoidal mirror (1); Be provided with center pit (3) in the bottom of described spherical reflector (2).
2. ellipsoid according to claim 1/sphere combinative optical system is characterized in that: the surface precision≤50 μ m of described ellipsoidal mirror (1) and spherical reflector (2).
3. ellipsoid according to claim 2/sphere combinative optical system is characterized in that: described ellipsoidal mirror (1) all is coated with the cold reflective membrane coating of optics (5) with spherical reflector (2) inside surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205506799U CN201897658U (en) | 2010-09-30 | 2010-09-30 | Ellipsoid/spherical surface combined optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205506799U CN201897658U (en) | 2010-09-30 | 2010-09-30 | Ellipsoid/spherical surface combined optical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201897658U true CN201897658U (en) | 2011-07-13 |
Family
ID=44255562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205506799U Expired - Lifetime CN201897658U (en) | 2010-09-30 | 2010-09-30 | Ellipsoid/spherical surface combined optical system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201897658U (en) |
-
2010
- 2010-09-30 CN CN2010205506799U patent/CN201897658U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENYANG ACADEMY OF INSTRUMENTATION SCIENCE CO., L Free format text: FORMER NAME: SHENYANG INSTRUMENT SCIENTIFIC ACADEMY |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 110043 Beihai street, Shenyang, Liaoning, No. 242 Patentee after: Shenyang Academy of Instrumentation Science Co., Ltd. Patentee after: Huibo Optic Technology Co., Ltd., Shenyang Address before: 110043 Beihai street, Shenyang, Liaoning, No. 242 Patentee before: Shenyang Instrument Scientific Academy Patentee before: Huibo Optic Technology Co., Ltd., Shenyang |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181210 Address after: 110043 Beihai street, Dadong District, Shenyang, Liaoning Province, No. 242 Patentee after: Shenyang Academy of Instrumentation Science Co., Ltd. Address before: 110043 Beihai street, Dadong District, Shenyang, Liaoning Province, No. 242 Co-patentee before: Huibo Optic Technology Co., Ltd., Shenyang Patentee before: Shenyang Academy of Instrumentation Science Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110713 |