CN110307523A - Lens and lighting apparatus - Google Patents
Lens and lighting apparatus Download PDFInfo
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- CN110307523A CN110307523A CN201910548693.0A CN201910548693A CN110307523A CN 110307523 A CN110307523 A CN 110307523A CN 201910548693 A CN201910548693 A CN 201910548693A CN 110307523 A CN110307523 A CN 110307523A
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- lens
- lighting apparatus
- reflecting element
- exit surface
- light
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Abstract
Embodiment of the disclosure is related to lens and lighting apparatus.Disclose that the lens include: light exit surface (110) for the lens (100) of the lighting apparatus (10) including solid-state lighting elements (20)；The central lens portion (120) opposite with the light exit surface；Annular reflecting element (130) opposite with the light exit surface and that first distance (d1) is extended from the light exit surface, the annular reflecting element define the central lens portion；And by opposite with the light exit surface and from the side surface that the outer ring reflecting element (140) that the light exit surface is extended second distance (d2) limits, second distance is greater than first distance, so that outer ring reflecting element extends beyond annular reflecting element.Also disclose the lighting apparatus of such as light bulb etc including this lens.
Description
The application be the applying date be on 06 04th, 2014, application No. is 201480032302.5, entitled " lens
And lighting apparatus " application for a patent for invention divisional application.
Technical field
The present invention relates to the lens for the lighting apparatus including solid-state lighting elements.
The invention further relates to the lighting apparatus including this lens.
Background technique
With continuing to increase for population, it is increasingly difficult to not only to meet the energy requirement in the world but also control carbon emission, with limitation
It is considered causing the greenhouse gas emission of global warming phenomenon.These worries, which have caused, to drive to more efficient electricity consumption, with examination
Figure reduces energy consumption.
A this field of interest is illumination application under domestic environment or in commercial environments.It is obvious to tend to
In the low conventional incandescent bulb of the energy efficiency for using the higher substitute replacement notorious reputation of energy efficiency clear.In fact, very
Mostly local, production and retail incandescent lamp bulb are illegal, therefore force consumer for example when replacing incandescent lamp bulb, are bought
Energy saving alternatives.
Especially promising alternatives are provided by solid-state lighting (SSL) equipment, can be with a part of energy of incandescent lamp bulb
It measures cost and generates unit light output.The example of this SSL element is light emitting diode.
The shortcomings that lighting apparatus based on SSL element is that independent SSL element has such as incandescent ratio, halogen tungsten or fluorescent lamp
Much lower light output is steeped, makes it necessary to include multiple SSL elements in the single lighting apparatus of such as light bulb etc to obtain
It is horizontal to obtain required light output.However, this is typically considered to have a negative impact to the appearance of lighting apparatus, this photograph is hampered
The market penetration of bright equipment, although the appearance of so-called chip on board (COB) SSL element (such as COB LED) exists in the recent period
Largely solve the problems, such as this, within the element, multiple SSL chips are encapsulated in together as a lighting module,
So that in use, the light-emitting area of lighting apparatus provides the appearance of single illumination panel.
It is interfering that the consumer market of this lighting apparatus permeates another problem is that, at least controlled in a manner of save the cost
The shape of the light output of this equipment, not a duck soup.When needing the light output of high directivity, such as with small beam angle
The light bulb of (being, for example, less than 30 ° of beam angle), this is special problem.By will such as Fresnel (Fresnel) lens and standard
The optical element of straight device etc includes that can control beam angle into lighting apparatus.For example, Publication No. JP2011-192494A
Japanese patent application disclose the Fresnel lens for lighting system, which has refractive lens portion and anti-
Penetrate lens component.The Fresnel lens further comprises the frame for being placed on lens on the substrate of lighting apparatus.
However, there is negative correlation between beam angle and the size for realizing optical element required for desired beam angle.This
It is meant that for small beam angle, such as 25 ° or 15 ° of beam angle, need large-sized beam shaping elements.Such as
In many small lighting apparatus of compact light bulb etc, without enough spaces such as prior art mentioned above
The optical element of Fresnel lens etc.
Summary of the invention
The present invention makes every effort to provide the lens for the light output that can be used for generating high directivity in compact luminaires.
The present invention further makes every effort to provide the lighting apparatus including this lens.
According to aspects of the present invention, the lens of the lighting apparatus for including solid-state lighting elements, the lens packet are provided
It includes: light exit surface；Central lens portion is opposite with the light exit surface；Annular reflecting element goes out firing table with the light
Face is opposite and is extended first distance from the light exit surface, and the annular reflecting element defines the center lens
Part；And side surface, limited by outer ring reflecting element, outer ring reflecting element it is opposite with the light exit surface and from
The light exit surface is extended second distance, which is greater than first distance and makes the extension of outer ring reflecting element super
Cross annular reflecting element.
At least some embodiments of the invention are to be based on having known clearly having (defining and such as reflecting there are two this ring-type element
The annular reflecting element of the central lens portion of lens component etc and the male ring element for being directly adjacent to inner ring element)
The outer ring reflecting elements of lens may be used as the support portions of lens.Therefore, when lens are placed on carrying one or more
When on the surface of a SSL, outer ring reflecting element not only supports lens, but also closing is limited by one or more SSL element
Light-emitting area.Since lens do not need discrete support construction, lens can be made in a compact manner, make it possible to and fitted
It fits in such as compact luminaires of directionality light bulb etc.
Moreover, because outer ring reflecting element be designed to the support portion of lighting apparatus be fitted close, under shallow angle from
The light of SSL element transmitting still can be collected and collimate.It should be noted that the Fresnel lens in JP 2011-192494A
This advantage is not enjoyed, because the external reflectance part of this lens is at it in face of the end and this surface on the surface of lighting apparatus
Between there is gap, this is due to the fact that, i.e. the supporting member of this lens extends to this surface and arrives more than external reflectance
Partial degree is supporting member with this surfaces mate.It therefore, cannot be by external reflectance with the light that shallow angle emits
Part captures, but can cannot instead of be collimated the supporting member capture of the light.Therefore, at least some realities according to the present invention
The lens for applying example realize the collimation than this prior art lens higher degree.
In embodiment, central lens portion has convex surface.The convex surface is realized towards the central axis of lens
Incident light collimation, to realize the appearance more focused.
Central lens portion may include Fresnel refractive surface.
In embodiment, at least one of annular reflecting element and outer ring reflecting element include by multiple small face rings
The tapered outer surface limited, to improve the color mixing of lens.In addition, this small face ring can be used for increase diameter as cost
Reduce the total height of lens.
Light exit surface may include stepped profile to reduce the total height of lens, so that it be made to be more suitable for being integrated in tightly
It gathers in type lighting apparatus.
Light exit surface can textured and/or lens may include the lenticule battle array on the light exit surface
Column are changed with reducing the color of lens with angle (COA).
Lens can be by the polymer material system of such as (optical grade) polycarbonate or polymethyl methacrylate etc
At manufacturing lens by the low-cost technologies being such as injection moulded etc.
According to another aspect of the present invention, it provides including at least one solid-state lighting elements and implementation according to the present invention
The lighting apparatus of the lens of example, which is placed at least one solid-state lighting elements, so that outer ring reflecting element
It is contacted with the surface of lighting apparatus, wherein the emitting surface area of solid-state lighting elements is surrounded by outer ring reflecting element.
This provides the compact luminaires with high efficiency collimation property, which can generate small
In 20 ° of arrow beam of light, such as 15 ° or smaller.
In embodiment, emitting surface area extends beyond central lens portion.Because of outer ring reflecting element and light bulb
Surface between physical contact, this is feasible so that form wherein transmit light output gas-tight seal cavity.Therefore,
The light of all transmittings is collected by lens, combines the illumination above mentioned arrow beam of light angle to set with high light flux to produce
It is standby.
Lighting apparatus may include the cavity at least one described solid-state lighting elements, described in the cavity receiving
Lens.
At least one SSL element can be light emitting diode (LED).The chip on board (COB) of such as COB LED etc
SSL element be it is particularly preferred because this SSL element generate appearance uniform High Light Output, this is to make us from aesthstic angle
Pleasant.
Detailed description of the invention
The mode of non-limiting example in more detail and by referring to accompanying drawing describes the embodiment of the present invention,
In:
Fig. 1 schematically depicts the lens of embodiment according to the present invention；
Fig. 2 schematically depicts lens according to another embodiment of the present invention；
Fig. 3 schematically depicts lens according to still another embodiment of the invention；
Fig. 4 schematically depicts the first perspective view of the lens of embodiment according to the present invention；
Fig. 5 schematically depicts the second perspective view of the lens in Fig. 4；And
Fig. 6 schematically depicts the lighting apparatus of embodiment according to the present invention.
Specific embodiment
It should be understood that attached drawing is only illustrative and is not drawn on scale.It should also be understood that identical attached
Icon note is used to indicate same or similar part through attached drawing.
Fig. 1 schematically depicts the lens 100 of embodiment according to the present invention.Lens 100 include by central lens portion
Points 120 light limited enter surface, annular reflecting element 130 and limit lens 100 side surface outer ring reflector
Part 140.Lens 100 further comprise and the light light exit surface 110 that enter surface opposite.In use, the light of lens 100 into
Enter surface and usually faces light source, such as one or more solid-state lighting (SSL) element including such as light emitting diode etc
20 surface.In embodiment, annular reflecting element 130 and outer ring reflecting element 140 are directly adjacent to each other, i.e. lens
100 include not more than two this ring-type elements.
The table of each of annular reflecting element 130 and outer ring reflecting element 140 towards carrying (multiple) SSL element 20
Face is extended light exit surface 110.Annular reflecting element 130 is extended distance from a part of light exit surface 110
D1, and outer ring reflecting element 140 is extended distance d2 from this part, wherein d2 is greater than d1.In other words, outer ring is anti-
Penetrate element 140 amount or distance bigger than the plane 125 that annular reflecting element 130 extends beyond central lens portion 120.
Therefore, in use, outer ring reflecting element 140 can contact the surface of carrying (multiple) SSL element 20, and annular reflects
Retention gap between element 130 and this surface.
Annular reflecting element 130 has inner surface 132 and outer surface 134.Outer ring reflecting element 140 has inner surface
142 and outer surface 144.The respective inner surfaces 132 and 142 of annular reflecting element 130 and outer ring reflecting element 140 are that have angle
Degree so that the incident light from (multiple) SSL element 20 is incident with the angle for being less than reflection critical angle so that it is most enter
Annular reflecting element 130 and outer ring reflecting element 140 will be traveled into respectively by penetrating light.What technical staff will readily appreciate that
It is that a small amount of reflection may be to be difficult to avoid that.
The outer surfaces 134 and 144 of annular reflecting element 130 and outer ring reflecting element 140 be it is angled, make
Obtain the incidence advanced respectively by annular reflecting element 130 and outer ring reflecting element 140 from (multiple) SSL element 20
Light is met with the angle for being greater than reflection critical angle with these surfaces, to be reflected towards light as illustrated by the arrows in fig. 1
Light exit surface 110.In other words, 134 He of outer surfaces of annular reflecting element 130 and outer ring reflecting element 140
144 be total internal reflection surface.Therefore, annular reflecting element 130 and outer ring reflecting element 140 are respectively served as (multiple)
The interior collimator and outer collimator for the light that SSL element 20 is emitted.
The outer surfaces 134 and 144 of annular reflecting element 130 and outer ring reflecting element 140 can be smooth table
Face, or can be multi-facet surface, wherein the surface is constructed by the multiple arcs section for each including multiple facets.This is improved
The color mixing and beam-shaping of lens 100.
In embodiment, the quilt of outer surfaces 134 and 144 of annular reflecting element 130 and outer ring reflecting element 140
It is shaped so that the light to be altered course by these surfaces leaves light exit surface 110, the i.e. plane perpendicular to light exit surface 110 vertically
Leave this surface.
In embodiment, central lens portion 120 can have convex shape, so that being reflected by central lens portion 120
Incident light vertically leave light exit surface 110, i.e. the plane perpendicular to light exit surface 110 leaves this surface.This
Embodiment, which thus provides, generates the lens 100 through highly collimated output, especially when with annular reflecting element 130 and outside
When the outer surfaces 134 and 144 of annular reflection element 140 combine, wherein outer surface 134 and 144 is so shaped that by this
The light of a little surface changed courses also vertically leaves light exit surface 110.In this situation, lens 100 can produce have down to
The collimation light output of 15 ° of beam angle.It should be understood that passing through change central lens portion 120 and/or annular reflector
The shape of the outer surfaces 134 and 144 of part 130 and outer ring reflecting element 140 changes the shape of light output, such as to produce
The raw light output for being focused the central axis to lens 100, it is equally feasible.This be known per se and only for succinct and
No longer it is explained in greater detail.
In embodiment, the overall dimensions of lens 100 extend beyond the typical luminous region of (multiple) SSL element 20
The inner surface 132 of annular reflecting element 130, as Fig. 1 is schematically shown.In this embodiment, outer ring reflecting element
140 be arranged to collect from this light emitting region be more than annular reflecting element 130 inner surface 132 part emit light,
And the light emitted under shallow angle from this light emitting region is (so that this light passes through annular reflecting element 130 and carries (more
It is a) gap between the surface of SSL element 120).
In addition, the outer surface 144 of outer ring reflecting element 140 limits the side surface of lens 100, i.e. lens 100 do not include
Discrete supporting member.Instead of, outer ring reflecting element 140 acts also as the supporting member of lens 100.
Lens 100 can manufacture in any suitable manner and by any suitable material.Specially suitable manufacturer
Method is the injection moulding using the polymer material of such as (optical grade) polycarbonate or PMMA etc.For technical staff
Speech, other suitable polymer materials will be apparent.
In Fig. 1, lens 100 have light exit surface 110, which has stepped profile.This be in order to
The overall dimensions of lens 100 are further reduced, in order to generate more compact lens 100.It should be understood, however, that light goes out
Reflective surface 110 can have any suitable shape.For example, Fig. 2 depicts the embodiment of lens 100, wherein light exit surface
110 be plane surface, but other surface shapes of such as curved shape are equally possible.Similarly, central lens portion 120 can
With any suitable shape, Fresnel surface such as shown in Figure 2.
Light exit surface 110 can be the surface of flat or baldness (clear).Alternatively, light exit surface 100 can be with
Veining, or the optical element that can carry microlens array 150 such as shown in Fig. 3 etc include lens 100 to improve
Lighting apparatus COA.If lighting apparatus generate different colours (with different output angles) white light so that due to it is this not
Enhancing with color of light mixes (such as passing through scattering), the lens 100 in the veining of light exit surface 100 or such as Fig. 3
On microlens array 150 etc optical element presence improve lens 100 white light output uniformity, this is special
Significant.
Fig. 4 and Fig. 5 shows the lens of the light exit surface 110 with veining according to example embodiment of the present invention
100 corresponding perspective view, the light exit surface have stepped profile also as shown in Figure 1.Fig. 4 further illustrates annular
One of the outer surfaces 134 and 144 and central lens portion 120 of reflecting element 130 and outer ring reflecting element 140
Point.Lens 100 may further include multiple fixing components 160, to engage for the receiving member with lighting apparatus, so that thoroughly
Mirror 100 is fixed in the lighting apparatus.
It is noted here that certain combinations of feature the fact that be not explicitly illustrated in a single fig are not intended to this
Kind combination is excluded from the scope of the present invention.Such as set in any combination of the feature of Fig. 1 lens 100 being shown respectively into Fig. 5
Want to fall within the scope of the present invention.
Fig. 6 schematically depicts the aspect of lighting apparatus 10 of the invention.Lighting apparatus 10 includes carrying at least one
The carrier 30 as one kind of SSL element 20.In embodiment, the carrier 30 as one kind including at least one SSL element 20 is chip on board LED encapsulation,
Although it should be understood that other arrangements are equally possible, such as it is mounted on discrete carrier (such as printed circuit board) such as
One or more SSL element 20 of LED etc.
In embodiment, lighting apparatus 10 includes the cavity 12 on carrier 30 as one kind, and lens 100 are adapted in the cavity
In.Lens 100 can be adapted in any suitable manner in this cavity.For example, cavity 12 may include multiple receptions
Component although other fixation principles are equally applicable, such as uses such as screw with the fixing component 160 for receiving lens 100
Or the like fastening member.
It such as can be in seen in fig. 6, outer ring reflecting element 140 and the carrier 30 as one kind physical contact of lens 100, so that outer ring
Shape reflecting element 140 closes the light-emitting area limited by one or more SSL element 20 on carrier 30 as one kind.Therefore, one or
The essentially all light output of the multiple SSL elements 20 of person is by the central lens portion 120 of lens 100, annular reflecting element
130 and outer ring reflecting element 140 capture.
In embodiment, in the light emitting region of the carrier 30 as one kind such as limited by one or more SSL element 20 extends beyond
The inner surface 132 of annular reflection element 130, as explained before.For example, light emitting region can in 30 light bulb of Par
With the diameter with about 10mm, and cavity 12 can have the diameter of 56mm and the height of 22mm, so that lens 100 is whole
Body size is defined by cavity size.This illustrates the compact essence of the lens 100 of embodiment according to the present invention.In embodiment,
The light output of (such as 70%) passes through central lens portion between such as the 60% to 80% of the lighting apparatus of 30 light bulb of Par etc
Divide 120 and the collimation of annular reflecting element 130, wherein remaining output passes through the collimation of outer ring reflecting element 140.
As non-limiting example, lighting apparatus 100 can be 30 light bulb of Par, the light bulb with 14.6 ° beam angle,
89% efficiency and 9.7 Cd/lm ratio.This is simultaneously no less than the prior art with more bloom beam angle or lower Cd/lm ratio
30 light bulb of Par.
It notices that, in Fig. 6, lighting apparatus 10 is the light bulb of mode by way of non-limiting example.It should be understood that
It is that the lens 100 of embodiment according to the present invention can be applied in any suitable lighting apparatus.In addition, lighting apparatus 10
It can be the light bulb of 30 light bulb of Par or any other suitable type or size.It names just a few, other suitable light bulb rulers
Very little including but not limited to GU10, MR11, MR16, AR111, Par38, BR30, BR40, R20 and R50 light bulb.
It should be noted that the illustrative and not limiting present invention of above-described embodiment, and those skilled in the art will be
Many alternative embodiments are designed without departing from the scope of the appended claims.In the claims, round parentheses are placed on
Between any reference symbol be not necessarily to be construed as limiting the claim.Word " comprising " does not exclude the presence of institute in claim
Elements or steps except those of column.Word " one (a) " or " one (an) " before element do not exclude the presence of multiple
This element.The present invention can be realized by way of including the hardware of several different elements.Listing several components
In equipment claim, several in these components can be embodied by identical hardware branch.Only with mutually different
The fact that be recited in mutually different dependent certain measures do not indicate that the combination of these measures cannot be advantageously used.
Claims (14)
1. a kind of lighting apparatus (10), including lens (100) and at least one solid-state lighting elements (20), the lens (100)
Include:
Light exit surface (110)；
Central lens portion (120) is opposite with the light exit surface；
Annular reflecting element (130) is opposite with the light exit surface and be extended first from the light exit surface
Distance (d1), the annular reflecting element define the central lens portion；And
Side surface is limited by outer ring reflecting element (140), and the outer ring reflecting element is opposite with the light exit surface simultaneously
And be extended second distance (d2) from the light exit surface, the second distance is greater than the first distance, so that described
Outer ring reflecting element extends beyond the annular reflecting element, wherein the annular reflecting element (130) and described outer
Annular reflection element (140) is directly adjacent to each other；
Wherein the lens are placed at least one described solid-state lighting elements, wherein the solid-state lighting elements (20)
Emitting surface area surrounded by the outer ring reflecting element；And
Wherein the emitting surface area extends beyond the central lens portion (120)；
Wherein the lens (100) further comprise multiple fixing components (160), for connecing with the lighting apparatus (10)
Component engagement is received, so that the lens (100) are fixed in the lighting apparatus (10).
2. lighting apparatus (10) according to claim 1, wherein the central lens portion of the lens (100)
(120) there is convex surface.
3. lighting apparatus (10) according to claim 1 or 2, wherein the central lens portion of the lens (100)
It (120) include Fresnel refractive surface.
4. lighting apparatus (10) according to claim 1 or 2, wherein the annular reflector of the lens (100)
At least one of part (130) and the outer ring reflecting element (140) include the tapered outer surface limited by multiple small face rings
(134、144)。
5. lighting apparatus (10) according to claim 1 or 2, wherein the light exit surface of the lens (100)
It (110) include stepped profile.
6. lighting apparatus (10) according to claim 1 or 2, wherein the light exit surface of the lens (100)
(110) textured.
7. lighting apparatus (10) according to claim 1 or 2, wherein the lens (100) further comprise in the light
Microlens array (150) on exit surface (110).
8. lighting apparatus (10) according to claim 1 or 2, wherein the lens are made of polymer material.
9. lighting apparatus (10) according to claim 8, wherein the polymer material is polycarbonate or poly- methyl
Methyl acrylate.
10. lighting apparatus (10) according to claim 1 or 2 further comprises carrier (30), carrier (30) carrying
At least one described solid-state lighting elements (20), wherein the lens be placed at least one described solid-state lighting elements it
On, so that the outer ring reflecting element (140) is contacted with the carrier (30).
11. lighting apparatus (10) according to claim 1 further comprises at least one described solid-state lighting elements
(20) cavity (12) on, the cavity accommodate the lens (100).
12. lighting apparatus (10) according to claim 1, wherein at least one described solid-state lighting member on the carrier
Part (20) is chip on board solid-state lighting elements.
13. lighting apparatus (10) according to claim 1 or 2, wherein at least one described solid-state lighting elements (20) are
Light emitting diode.
14. lighting apparatus (10) according to claim 1 or 2, wherein the lighting apparatus has the light beam no more than 15 °
Angle.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNPCT/CN2013/076946 | 2013-06-07 | ||
| CN2013076946 | 2013-06-07 | ||
| CN201480032302.5A CN105264288B (en) | 2013-06-07 | 2014-06-04 | Lens and lighting apparatus |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480032302.5A Division CN105264288B (en) | 2013-06-07 | 2014-06-04 | Lens and lighting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110307523A true CN110307523A (en) | 2019-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480032302.5A Active CN105264288B (en) | 2013-06-07 | 2014-06-04 | Lens and lighting apparatus |
| CN201910548693.0A Pending CN110307523A (en) | 2013-06-07 | 2014-06-04 | Lens and lighting apparatus |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480032302.5A Active CN105264288B (en) | 2013-06-07 | 2014-06-04 | Lens and lighting apparatus |
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| Country | Link |
|---|---|
| CN (2) | CN105264288B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107314272B (en) * | 2016-04-26 | 2019-09-10 | 中强光电股份有限公司 | Spotlight and collector lens |
| CN105737100A (en) * | 2016-04-27 | 2016-07-06 | 成都恒坤光电科技有限公司 | Multilayer total-reflection scale lens, lamp and optical system |
| CN107765351B (en) * | 2016-08-15 | 2021-04-30 | 扬明光学股份有限公司 | Lens and lens assembly |
| CN106764939B (en) * | 2016-12-06 | 2019-05-17 | 中山大学 | A kind of collimation lens for eliminating stray light |
| EP3511613A4 (en) | 2016-12-29 | 2020-04-01 | Suzhou Opple Lighting Co., Ltd. | Lens, light source module, and lighting device |
| CN106500012B (en) * | 2016-12-29 | 2023-02-28 | 苏州欧普照明有限公司 | Light source module and lighting device |
| CN107452727A (en) * | 2017-07-06 | 2017-12-08 | 深圳市旭晟半导体股份有限公司 | A kind of band lens LED encapsulation structure and manufacture method |
| CA3076908A1 (en) * | 2017-09-26 | 2019-04-04 | DMF, Inc. | Folded optics methods and apparatus for improving efficiency of led-based luminaires |
| CN110671657A (en) * | 2019-09-05 | 2020-01-10 | 漳州立达信光电子科技有限公司 | Cylinder lamp |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105264288A (en) | 2016-01-20 |
| CN105264288B (en) | 2019-07-19 |
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Application publication date: 20191008 |