CN208997997U - A kind of varifocal optical lens - Google Patents
A kind of varifocal optical lens Download PDFInfo
- Publication number
- CN208997997U CN208997997U CN201822117204.XU CN201822117204U CN208997997U CN 208997997 U CN208997997 U CN 208997997U CN 201822117204 U CN201822117204 U CN 201822117204U CN 208997997 U CN208997997 U CN 208997997U
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- light
- lens
- lens body
- emitting surface
- varifocal optical
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The utility model discloses a kind of varifocal optical lenses, including lens body, lens body is inverted shaped hollow round table and lens body bottom is provided with light source through holes, lens body lateral surface is fully reflecting surface, the light source through holes medial surface is the transparent refractive face for light transmission, transparent refractive face is in the shaped hollow round table of upper and lower both ends open, lens body upper end is provided with the peripheral light-emitting surface being transparent, peripheral light-emitting surface is round table-like in inverted ladder, peripheral light-emitting surface bottom is provided with loophole and loophole upper end-face edge connection free form surface body, side is hemispherical projection surface in free form surface body, the external side of free form surface is center light-emitting surface, hemispherical projection surface bottom end is connected with transparent refractive face upper end.
Description
Technical field
The utility model relates to lighting areas, more particularly to a kind of varifocal optical lens.
Background technique
With being constantly progressive for LED lighting technology, people are to the quality requirement of illumination light and the quality standard of optical articles
It is gradually increased.Zoom illumination is the core technology of the products such as stage illumination, lighting and flashlight portable lighting, but realizes LED light at present
In the method for learning zoom lens, single convex lens has that light efficiency is low when zooming, and there are light efficiencies for multiple-piece lens group
Low, the problems such as lamps and lanterns volume is big, design method is cumbersome, the uniformity is low, therefore, both it is unable to satisfy the use demand of people.
Summary of the invention
The utility model aim is in view of the above-mentioned problems, providing that a kind of structure is simple, varifocal optics easy to use
Lens.
To achieve the goals above, the technical solution of the utility model is:
A kind of varifocal optical lens, including lens body, lens body are inverted shaped hollow round table and lens sheet
Body bottom is provided with light source through holes, and lens body lateral surface is fully reflecting surface, and the light source through holes medial surface is for light transmission
Transparent refractive face, transparent refractive face are in the shaped hollow round table of upper and lower both ends open, and lens body upper end, which is provided with, to be transparent
Peripheral light-emitting surface, peripheral light-emitting surface is round table-like in inverted ladder, and peripheral light-emitting surface bottom is provided on loophole and loophole
End margin connects free form surface body, and side is hemispherical projection surface in free form surface body, and the external side of free form surface is center light-emitting surface,
Hemispherical projection surface bottom end is connected with transparent refractive face upper end.
Further, the centerlines of the side in the transparent refractive face and optical lens are 7 °.
Further, as focussing distance T=10mm, lens are in flood condition, and the efficiency of light energy utilization is greater than under this state
90%, 120 ° of beam angle, uniformity of illuminance is greater than 81%.
Further, lens are in spot condition, and lens are integrally similar to TIR collimation lens at this time, and the efficiency of light energy utilization is big
In 72%, beam angle reaches 10 °, and uniformity of illuminance is greater than 80%.
Further, the lens body is made of refractive index of 1.3~4.2 transparent material.
Further, the distance of the light source through holes bottom dead center position to loophole center is 10mm.
Further, the peripheral light-emitting surface is engraved structure.
Further, the lens body lateral surface is provided with scale and shell structure.
Further, described is varifocal simple lens, and lens position is constant, and the position by changing LED light source is realized
Zoom.
Compared with prior art, the utility model has the advantages and positive effects of:
The utility model in spot condition, the light that light source issues respectively from center light-emitting surface and peripheral light-emitting surface simultaneously
It projects, occurs under spot condition without secondary spot so that the light of the injection made reaches when in target face, uniformity is higher；In floodlight
When state, the light that light source issues directly is issued from center light-emitting surface, and beam angle is big and uniform illumination；Therefore, which raises
The using effect of people；Also, the utility model structure is simple, cost is relatively low, and certain economic consumption is reduced to people
Convenience is brought simultaneously.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the sectional structure chart of the utility model；
Fig. 2 is flood condition local structural graph.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
As shown in Figure 1 and Figure 2, the utility model is the lens and device of a kind of varifocal uniform light spots of wide-angle.This zoom
Lens use simple lens zoom, lens position constant and the position-variable mode of LED light source, pass through the position for changing LED light source
Set realization zoom.
As shown in Figure 1, being a kind of varifocal simple lens of the utility model, comprising: simple lens ontology 1, simple lens ontology
The plane of incidence 6 and outer layer fully reflecting surface 2 of bottom periphery, top layer periphery light-emitting surface 3, free form surface body 10, free form surface body 10
Inside hemisphere face 4 and top layer center light-emitting surface 5.Wherein, the plane of incidence 6 of bottom periphery is plane of refraction, corresponding lens chamfering
It is -7 °；Outer layer fully reflecting surface 2 is the free form surface that free curve is surrounded centered on light source；Top layer periphery light-emitting surface 3 is ladder
The light-emitting surface of type engraved structure；Inside middle incidence surface 4 is semicircle transmissive interface；Top layer center light-emitting surface 5 is free curve
The free form surface surrounded centered on light source.When lens realize floodlighting, top layer periphery light-emitting surface 3 and outer layer fully reflecting surface
Region between 2 will not influence the light of light source.Lens arrangement needed for flood condition is split as shown in Fig. 2, inside it
Structure is that the center of circle (i.e. the center of loophole 9) of hemisphere face 4 is overlapped with LED light source 7, therefore will not influence the rail of emergent ray
Mark.It is then the free form surface surrounded centered on light source middle line by free curve for top layer center light-emitting surface 5.
Referring to Fig.1, LED light source 7 is put at 8 bottom dead center position of light source through holes, and the light issued is mainly via two
The different planes of incidence is incident.First, the light that LED light source issues is reflected and is projected to fully reflecting surface 2 by the plane of incidence 6 of bottom,
Light is reflected from exit facet 3 by fully reflecting surface 2 and is emitted.Second, the light that LED light source issues passes through hemisphere face 4, direction is constant
And it is mapped to top layer center light-emitting surface 5, it is emitted from top layer center light-emitting surface 5.The light that LED is issued passes through two different planes of incidence
It projects, so that uniformity when reaching incident light in target face is higher.
Under ideal point light source, as focussing distance T=10mm, lens are in flood condition, under this state light-use
Rate is greater than 90%, 120 ° of beam angle.As focussing distance T=0mm, lens are in spot condition, and lens are integrally similar at this time
TIR collimation lens, the efficiency of light energy utilization are greater than 72%, and beam angle reaches 10 °.Under high power light source, as focussing distance T=10mm
When, lens are in flood condition, and the efficiency of light energy utilization is greater than 89% under this state, and beam angle reaches 120 °.As focussing distance T=
When 0mm, lens are in spot condition, and uniformity of illuminance is greater than 80%, and the efficiency of light energy utilization is greater than 70%, and beam angle reaches 10 °.
Top layer periphery light-emitting surface 3 also there is engraved structure to reduce lens in the case where not influencing opticpath
Making material, higher light utilization efficiency is reached with this.
The lens body uses refractive index to be made of 1.3~4.2 transparent material, realize focussing distance T in 0mm and
Variation between 10mm, variation of the beam angle between 10 °~120 °, and the efficiency of light energy utilization of zoom system, pancreatic system is big in spot condition
In 70%, flood condition is greater than 90%, and variable lens aperture is 20mm, realizes that uniform-illumination is greater than 81% in the flood condition
Circular light spot.
The lens body also has scale and shell structure, improves the spatial color consistency of lens, and improves lens and go out
The uniformity of light.
Claims (6)
1. a kind of varifocal optical lens, including lens body, lens body is inverted shaped hollow round table and lens body
Bottom is provided with light source through holes, and lens body lateral surface is fully reflecting surface, it is characterised in that: the light source through holes medial surface is to use
In the transparent refractive face of light transmission, transparent refractive face is in the shaped hollow round table of upper and lower both ends open, and lens body upper end, which is provided with, is in
The peripheral light-emitting surface of transparence, peripheral light-emitting surface in inverted ladder it is round table-like, peripheral light-emitting surface bottom be provided with loophole and
Loophole upper end-face edge connects free form surface body, and side is hemispherical projection surface in free form surface body, during the external side of free form surface is
Heart light-emitting surface, hemispherical projection surface bottom end are connected with transparent refractive face upper end.
2. varifocal optical lens as described in claim 1, it is characterised in that: the side in the transparent refractive face and optics
The centerlines of lens are 7 °.
3. varifocal optical lens as described in claim 1, it is characterised in that: the lens body is 1.3 by refractive index
~4.2 transparent material is made.
4. varifocal optical lens as described in claim 1, it is characterised in that: the light source through holes bottom dead center position is extremely
The distance of loophole center is 10mm.
5. varifocal optical lens as described in claim 1, it is characterised in that: the periphery light-emitting surface is engraved structure.
6. varifocal optical lens as described in claim 1, it is characterised in that: the lens body lateral surface is provided with squama
First structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822117204.XU CN208997997U (en) | 2018-12-17 | 2018-12-17 | A kind of varifocal optical lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822117204.XU CN208997997U (en) | 2018-12-17 | 2018-12-17 | A kind of varifocal optical lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208997997U true CN208997997U (en) | 2019-06-18 |
Family
ID=66808955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822117204.XU Active CN208997997U (en) | 2018-12-17 | 2018-12-17 | A kind of varifocal optical lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208997997U (en) |
-
2018
- 2018-12-17 CN CN201822117204.XU patent/CN208997997U/en active Active
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