CN203561795U - Optical system of LED variable-focus imaging lamp - Google Patents
Optical system of LED variable-focus imaging lamp Download PDFInfo
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- CN203561795U CN203561795U CN201320720674.XU CN201320720674U CN203561795U CN 203561795 U CN203561795 U CN 203561795U CN 201320720674 U CN201320720674 U CN 201320720674U CN 203561795 U CN203561795 U CN 203561795U
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- zoom lens
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- imaging lamp
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Abstract
The utility model discloses an optical system of an LED variable-focus imaging lamp. The optical system comprises an LED light source module, a light-collecting assembly, a cutting assembly and a zoom lens set installed in sequence according to the direction of a light path, the geometric centers of the members and a primary optical axis are collinear, a focus F1 of the light-collecting assembly is coincided with a focus F2 of the zoom lens set, the zoom lens set comprises a first zoom lens, diaphragms and a second zoom lens, the first zoom lens and the second zoom lens can move back and forth along the direction of the primary optical axis A so that zooming is achieved, the diaphragms are arranged between the first zoom lens and the second zoom lens, and the light through hole diameter is adjustable. The optical system can be widely applicable to LED variable-focus imaging lamps and replaces conventional LED fixed-focus imaging lamps with various angles and high energy consumption halogen bubble light source imaging lamps. The variable diaphragms are designed in the zoom lens set so that off-axis aberration can be effectively reduced, off-axis stray lights can be prevented from passing through, and the imaging is more clear.
Description
Technical field
The utility model is the optical system of the varifocal imaging lamp of a kind of LED, belongs to the innovative technology of the imaging optical system of LED imaging lamp.
Background technology
Existing stage imaging lamp is mainly divided into halogen light source imaging lamp and LED imaging lamp by light source.But the whole lamp heat of the halogen light source imaging lamp of prior art is large, light efficiency is low, and cannot realize light modulation, and colour temperature is non-adjustable.For solving Halogen lamp LED above defect, insider has developed the imaging lamp using LED as light source, and LED light fixture has energy-conserving and environment-protective, and light efficiency is high, and brightness is high, and the life-span is long, controllability is strong etc., and advantage is widely used in various public places of entertainment.In order to reduce costs, making LED imaging lamp and existing imaging lamp take halogen bulb as light source realize accessory shares, requirement at the spot diameter of imaging lamp focus point F still between 60-80mm, brought very large difficulty to the lens design in later stage, many enterprises have to abandon zoom system, pancreatic system, although there is minority enterprise to design zoom system, pancreatic system, the clear patterns degree of zoom process does not reach request for utilization far away.
Summary of the invention
The purpose of this utility model is to consider the problems referred to above and a kind of imaging optical system of the varifocal imaging lamp of LED more clearly that makes in the situation that realizing zoom is provided.The utility model designs unique zoom lens group and realizes zoom function, has broken through optical design technological difficulties, has and the analogous imaging effect of tight shot.
The technical solution of the utility model is: the optical system of the varifocal imaging lamp of LED of the present utility model, comprise the LED light source module of installing successively according to optical path direction, concentrating component, cutting assembly, zoom lens group, the geometric center of described member and primary optical axis A conllinear, the focal point F 1 of described concentrating component overlaps with the focal point F 2 of zoom lens group, described zoom lens group comprises the first zoom lens, diaphragm and the second zoom lens, described the first zoom lens and the second zoom lens move forward and backward and realize zoom along the direction of primary optical axis A, described diaphragm be located between the first zoom lens and the second zoom lens and clear aperature adjustable.
Above-mentioned cutting assembly comprises that four are cut mating plate, some division boards, some limiting plates, cutting rack, pressing plate, flexible member, cutting mating plate for four is installed in and on cutting rack, is combined to form some layers of cutting structure, between layers by separating by division board respectively, cutting rack is cut in correspondence on the position in mating plate outside and is provided with and prevents from cutting the limiting plate that mating plate departs from cutting rack when motion, cuts mating plate and division board and is fixed on cutting rack by pressing plate and flexible member.
Cut mating plate and be every two and be arranged in same plane, form the cutting structure of two-layer for above-mentioned four; Or every a slice is arranged in different planes, the cutting structure of formation four laminars; Or wherein two be arranged in same plane, other two are arranged in different planes, form the cutting structure of three-layer type, separate between layers by division board.
The first zoom lens plane of incidence of the utility model zoom lens group adopts non-spherical structure, and its surperficial radian is different from common spheric glass, can well aberration correction.Diaphragm is the adjustable iris of clear aperature, be vignetting stop, this type of diaphragm can reduce outer aberration of week, and what make that GOBO pattern place off-axis point sends can only partly pass through by the light beam of optical system originally, reduce passing through of outer parasitic light of week, make imaging more clear.In stage imaging lamp, the utility model is aperture diaphragm to be used in the zoom system, pancreatic system of imaging lamp first, has realized the more clear sharp keen advantage of imaging.Problem to be solved in the utility model is on the basis take LED module as light source, realize under the prerequisite shared with existing imaging lamp accessory, designed varifocal imaging optical system, zooming range is adjustable continuously between 16 °～30 °, alternative many existing imaging lamps that focus.The utility model is that a kind of design is ingenious, function admirable, the optical system of the convenient and practical varifocal imaging lamp of LED.
Accompanying drawing explanation
Fig. 1 is minimum light spot light path schematic diagram of the present utility model;
Fig. 2 is maximum hot spot light path schematic diagram of the present utility model;
Fig. 3 is the stereographic map of cutting assembly in the utility model;
Fig. 4 is the STRUCTURE DECOMPOSITION figure of cutting assembly in the utility model;
Fig. 5 is the stereographic map of cutting rack in the utility model;
Fig. 6 is the stereographic map of limiting plate in the utility model;
Fig. 7 is the stereographic map of diaphragm in the utility model.
Embodiment
Embodiment:
As shown in Figure 1 to Figure 2, the optical system of the varifocal imaging lamp of LED of the present utility model, comprise the LED light source module 1 of installing successively according to optical path direction, concentrating component 2, cutting assembly 3, zoom lens group, the geometric center of described member and primary optical axis A conllinear, wherein, the focal point F 1 of concentrating component 2 overlaps with the focal point F 2 of zoom lens group, zoom lens group comprises the first zoom lens 4, diaphragm 5 and the second zoom lens 6, the first zoom lens 4 and the second zoom lens 6 move forward and backward and realize zoom along the direction of primary optical axis A, diaphragm 5 be located between the first zoom lens 4 and the second zoom lens 6 and clear aperature adjustable.
The zooming range of zoom lens group is adjustable continuously between 16 °～30 °.
The plane of incidence of the first zoom lens 4 is aspheric surface, and the radius-of-curvature of exit facet is 220～230mm, and optical center axial thickness is 8～15mm, and the effective of camera lens is diameter 80～88mm.
First zoom lens 4 planes of incidence adopt non-spherical structure, and its surperficial radian is different from common spheric glass, can well aberration correction.Because imaging lamp eyeglass is counted quantitative limitation, adopt non-spherical structure can well reduce eyeglass quantity, obtain the zoom system, pancreatic system of larger multiplying power simultaneously, adopt the optical system of aspheric surface technical design, can eliminate spherical aberration, coma, astigmatism, the curvature of field, reduces optical energy loss, thereby obtains the optical characteristics of high-quality image effect and high-quality.In the present embodiment, the radius-of-curvature of the exit facet of the first zoom lens 4 is 222.2mm, lens thickness 10mm, diameter of lens 85mm.
The second zoom lens 6 is spherical lens, and the radius-of-curvature of its plane of incidence is 1990～2010mm, and the radius-of-curvature of exit facet is 280～290mm, and optical center axial thickness is 8～15mm, and the effective diameter of camera lens is 110～120mm.
As shown in Figure 7, the clear aperature of diaphragm 5 is adjustable continuously from 0mm～110mm.
The power of the LED light source module 1 that the utility model adopts is 250W, by high-power LED chip, encapsulated, more than its white light luminous flux maximum can reach 11000lm, realize colour temperature in 2800K-6500K scope internal linear adjustable function simultaneously, the colour rendering index of light source can reach more than 90, now the light fixture colour rendering index take LED as light source is all lower, this is to determine with the optical characteristics of LED self, the spectrum that LED sends is discontinuous, so the light of outgoing can lack certain some spectral component, cause the colour rendering index of light source low, imaging reduction degree is low.The utility model relatively on the market light fixture take LED as light source has had very large advantage, has highlighted and high aobvious characteristic simultaneously.
As shown in Figures 3 to 6, cutting assembly 3 comprises that four are cut mating plate 31, some division boards 32, some limiting plates 33, cutting rack 34, pressing plate 35, flexible member 36, cutting mating plate 31 for four is installed in and on cutting rack 34, is combined to form some layers of cutting structure, between layers by separating by division board 32 respectively, cutting rack 34 is cut in correspondence on the position in mating plate 31 outsides and is provided with and prevents from cutting the limiting plate 33 that mating plate departs from cutting rack 34 when motion, cuts mating plate 31 and division board 32 and is fixed on cutting rack 34 by pressing plate 35 and flexible member 36.
Limiting plate 33 embeds on the set flange of cutting rack 34 or groove 341 by groove or flange 331.
Cut mating plate 31 for four and be arranged in same plane for every two, form the cutting structure of two-layer; Or every a slice is arranged in different planes, form the cutting structure of four laminars, although the cutting of four laminars takes up space greatly, cost is high, however control is the most flexible; Or wherein two be arranged in same plane, other two are arranged in different planes, form the cutting structure of three-layer type, separate between layers by division board.What adopt in the present embodiment is the diced system of three-layer type.
In the present embodiment, for the accessory of general on the market imaging lamp as pattern frame, apertures etc. are realized and being shared, and facilitate client to change in time, the light hole diameter of the focal position F1 of concentrating component 2 is designed to 70mm.Light hole diameter determines difficulty or ease and the complexity of lens design, about 46 ° in focus point beam projecting angle, the set optical system of counting large visual field, large aperture.
Light beam by after the first zoom lens 4 through diaphragm 5, i.e. vignetting stop, the variation range of its light hole warp is adjustable continuously in 0mm-110mm.Vignetting stop can be tackled off-axis point light beam, makes its aperture angle be less than object point aperture angle on axle, can improve the image quality of off-axis point.Realizing 16 degree in 30 degree zooming ranges, the diameter of adjustable vignetting stop, the imaging effect of Control Shaft exterior point light beam, under the prerequisite that at utmost meets imaging clearly, reach as far as possible maximum luminous flux, diaphragm diameter being transferred to maximum to the not high occasion of imaging requirements, realize high output light flux.
After diaphragm 5, by the second zoom lens 6, in the present embodiment, the radius-of-curvature of the plane of incidence of the second zoom lens 6 is 2000mm, and the radius-of-curvature of exit facet is 285.7mm, and the eyeglass plane of incidence is 10mm to the distance of exit facet, and diameter of lens is 116mm.
Light path system of the present utility model, can realize 16 ° to 30 ° rising angles and regulate, more than whole lamp output light flux can reach 9500lm when minimum rising angle, more than whole lamp output light flux can reach 7500lm during maximum rising angle.Simultaneously can meet colour temperature adjustable in 2800K-6500K scope, meet the needs of stage lighting under different occasions, between alternative existing the most frequently used 16 ° to 30 °, focus at any angle imaging lamp.
Claims (10)
1. the optical system of the varifocal imaging lamp of LED, comprise the LED light source module (1) of installing successively according to optical path direction, concentrating component (2), cutting assembly (3), zoom lens group, the geometric center of described member and primary optical axis A conllinear, the focal point F 1 of described concentrating component (2) overlaps with the focal point F 2 of zoom lens group, it is characterized in that, described zoom lens group comprises the first zoom lens (4), diaphragm (5) and the second zoom lens (6), described the first zoom lens (4) and the second zoom lens (6) move forward and backward and realize zoom along the direction of primary optical axis A, described diaphragm (5) be located between the first zoom lens and the second zoom lens and clear aperature adjustable.
2. the optical system of the varifocal imaging lamp of LED according to claim 1, is characterized in that, the zooming range of described zoom lens group is adjustable continuously between 16 °～30 °.
3. the optical system of the varifocal imaging lamp of LED according to claim 1, it is characterized in that, the plane of incidence of described the first zoom lens (4) is aspheric surface, and the radius-of-curvature of exit facet is 220～230mm, optical center axial thickness is 8～15mm, and the effective diameter of camera lens is 80～88mm.
4. the optical system of the varifocal imaging lamp of LED according to claim 1, it is characterized in that, described the second zoom lens (6) is spherical lens, the radius-of-curvature of its plane of incidence is 1990～2010mm, the radius-of-curvature of exit facet is 280～290mm, optical center axial thickness is 8～15mm, and the effective diameter of camera lens is 110～120mm.
5. the optical system of the varifocal imaging lamp of LED according to claim 1, is characterized in that, the clear aperature of described diaphragm (5) is adjustable continuously from 0mm～110mm.
6. the optical system of the varifocal imaging lamp of LED according to claim 1, is characterized in that, described diaphragm (5) is 135～150mm with the focal point F 1 of concentrating component (2) along the distance of primary optical axis.
7. according to the optical system of the varifocal imaging lamp of LED described in claim 1 to 6 any one, it is characterized in that, described cutting assembly (3) is located at the position of focal point F 1 of concentrating component (2) or its side near focal point F 1 position.
8. the optical system of the varifocal imaging lamp of LED according to claim 7, it is characterized in that, described cutting assembly (3) comprises that four are cut mating plate (31), some division boards (32), some limiting plates (33), cutting rack (34), pressing plate (35), flexible member (36), cutting mating plate (31) for four is installed on cutting rack (34) and is combined to form some layers of cutting structure, by division board (32), separate respectively between layers, cutting rack (34) is cut in correspondence on the position in mating plate (31) outside and is provided with and prevents from cutting the limiting plate (33) that mating plate departs from cutting rack (34) when motion, describedly cut mating plate (31) and division board (32) is fixed on cutting rack (34) by pressing plate (35) and flexible member (36).
9. the optical system of the varifocal imaging lamp of LED according to claim 8, is characterized in that above-mentioned limiting plate (33) embeds on cutting rack (34) set flange or groove (341) by groove or flange (331).
10. the optical system of the varifocal imaging lamp of LED according to claim 8, is characterized in that above-mentioned four are cut mating plate (31) and are arranged in same plane for every two, form the cutting structure of two-layer; Or every a slice is arranged in different planes, the cutting structure of formation four laminars; Or wherein two be arranged in same plane, other two are arranged in different planes, form the cutting structure of three-layer type, separate between layers by division board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320720674.XU CN203561795U (en) | 2013-11-15 | 2013-11-15 | Optical system of LED variable-focus imaging lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320720674.XU CN203561795U (en) | 2013-11-15 | 2013-11-15 | Optical system of LED variable-focus imaging lamp |
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| CN203561795U true CN203561795U (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320720674.XU Withdrawn - After Issue CN203561795U (en) | 2013-11-15 | 2013-11-15 | Optical system of LED variable-focus imaging lamp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103631017A (en) * | 2013-11-15 | 2014-03-12 | 广州市浩洋电子有限公司 | Optical system of LED (light emitting diode) variable focal imaging lamp |
| CN110701519A (en) * | 2019-10-14 | 2020-01-17 | 广东凯西欧光健康有限公司 | Push-pull type linkage light control module and spotlight applying same |
-
2013
- 2013-11-15 CN CN201320720674.XU patent/CN203561795U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103631017A (en) * | 2013-11-15 | 2014-03-12 | 广州市浩洋电子有限公司 | Optical system of LED (light emitting diode) variable focal imaging lamp |
| WO2015070695A1 (en) * | 2013-11-15 | 2015-05-21 | 广州市浩洋电子有限公司 | Optical system of led variable-focal-length imaging lamp |
| US10281695B2 (en) | 2013-11-15 | 2019-05-07 | Guangzhou Haoyang Electronic Co., Ltd. | Optical system of LED variable-focus imaging lamp |
| CN110701519A (en) * | 2019-10-14 | 2020-01-17 | 广东凯西欧光健康有限公司 | Push-pull type linkage light control module and spotlight applying same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140423 Effective date of abandoning: 20160106 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140423 Effective date of abandoning: 20160106 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |