CN202109404U - Optical module of light-emitting diode - Google Patents

Abstract

The utility model relates to an optical module of a light-emitting diode. The optical module is used at the position of a light-emitting diode array to ensure that the illumination, the brightness, the uniformity, the illumination efficiency and the like of a lamp adopting the optical module conform to the requirements of users. The optical module is provided with at least one optical light guiding unit and at least one anti-glare light guiding unit, wherein the optical light guiding unit is formed by connecting a plurality of groups of optical light guiding units in parallel and is used for adjusting the optical pattern to the shape conforming to the illuminated area scope. Every two anti-glare light guiding units are arranged at the two sides of the optical light guiding unit and can improve the uniformity and prevent the glare. Therefore, when the optical module is applied to an illuminating lamp, a required light distribution curve can be formed according to different illuminated objects.

Description

The optical module of light emitting diode

Technical field

The utility model relates to the optical module field, especially refers to a kind of light guide module that is used for light emitting diode matrix, makes light distribute and increase the uniformity of integral illumination according to area to be illuminated territory Adjusting Shape to optimal smooth type.

Background technology

The basic demand of illumination Design is illumination, brightness, the uniformity (minimal illumination/average illumination), illumination efficiency (luminous flux/luminous flux of light source that the effective lighting scope is accepted), Luminaire efficiency (light fixture luminous flux/luminous flux of light source) etc.The illumination efficiency and the uniformity are inversely proportional to, and improve the uniformity in the area to be illuminated territory, and illumination efficiency will face very big challenge; But if take illumination efficiency into account, the uniformity is then obviously not good, how to make both can reach equalization point, is then testing designer's wisdom.

In recent years quite general with the made light fixture of light emitting diode, this led lamp has that power consumption is low, efficient is high, maintenance cost is low and advantage such as long service life, replaces light sources such as traditional mercury vapor lamp, incandescent lamp, Halogen lamp LED gradually.But it is required that the luminous flux of single light emitting diode still can't reach illumination at present, therefore many with many light emitting diodes of array way arrangement.This type of led lamp still has following several shortcomings:

By according to object according to light source with by according to the distance (for example different road height) of object, area to be illuminated territory shape, and area size (for example different roads width with lamp stand apart from) ... etc., and the design of different secondary optics need be arranged.Comply with existing mode and only utilize the change of light emitting diode matrix distribution mode, can't produce preferable distribution curve flux.

With the formed light fixture of a plurality of light emitting diode matrixs, be the secondary optics reflector mostly directly with the lampshade profile, can't form preferable light type and distribute;

Light emitting diode has directive property, and direct irradiation is easy to generate the not good and dazzle of the uniformity, lets the user feel under the weather;

Same light-emitting diode chip for backlight unit is understood because of different packaged types or different encapsulation dealer encapsulation, and is produced different light type (Radiation pattern).Thereby make the secondary optics design of light fixture be subject to packaging industry.

The utility model content

In order to solve prior art problems, the inventor promptly thinks deeply another kind of mode, designs an optical module and light emitting diode matrix and is used, and makes light beam make suitable reflection and leaded light, forms required light type and distributes.

The main purpose of the utility model provides a kind of ability, and the optical module of the light emitting diode that the optimal smooth type that arrives distributes is reaching illumination uniformity simultaneously according to the different adjustment in territory, area pellucida, also can take into account and keep high illumination efficiency.

The secondary objective of the utility model provides the high optical module of Luminaire efficiency, and this optical module all adopts the high reflectance material at each reflecting surface and light guiding surface place, and the light fixture luminous flux attenuation is reduced, and improves Luminaire efficiency.

For reaching above-mentioned purpose, the optical module of the utility model mainly comprises being at least a smooth type light element and being at least an anti-dazzle light element and constitutes.Should many group light type light elements be to form side by side; Each group light type light element is comprising one first plane of reflection and one second plane of reflection; This first plane of reflection and second plane of reflection are and are oppositely arranged, and this first plane of reflection, second plane of reflection and center line have an angle theta ₁An and angle theta ₂, angle theta ₁, θ ₂Between or equal within 0 °～89 °.

This anti-dazzle light element comprises one first light guiding surface and one second leaded light reflective surface, and this first light guiding surface and second light guiding surface are arranged at aforementioned lights type light element both sides respectively, and this first light guiding surface, second light guiding surface and center line have an angle ψ ₁, ψ ₂, this angle ψ ₁, ψ ₂With center line be within+89 ° to-89 °.When the optical module of the utility model and light emitting diode matrix are used, can and promote illumination efficiency thus with ray guidance to required illumination zone.

Wherein, This light emitting diode matrix has a circuit board and a plurality of light emitting diode; This light emitting diode is multiple row and is distributed on the circuit board side by side; Each row's light emitting diode corresponding aforementioned one group of light type light element, this light emitting diode is between aforementioned first plane of reflection and second plane of reflection.

Wherein, this light type light element is that many groups are arranged side by side, and combines with this anti-dazzle light element.

Further, the light type light element of this optics LGP is asymmetrical design, i.e. this angle theta ₁Be not equal to angle theta ₂

Further, the light type light element of this optics LGP is the design of symmetry, i.e. this angle theta ₁Equal angle theta ₂

Further, first, second plane of reflection reflectivity of light type light element reaches more than 85%.

Further, first, second plane of reflection electroplate of light type light element.

Further, aluminize in first, second plane of reflection surface of light type light element.

Further, the height of first, second plane of reflection of light type light element is according to being decided according to object.

Further, the angle theta of first, second plane of reflection of light type light element ₁, θ ₂Be to decide according to the scope of illuminated object.

Further, first, second light guiding surface reflectivity of anti-dazzle light element reaches more than 85%.

Further, has a space between first plane of reflection of this light type light element and one second plane of reflection.

Further, have a plurality of hole slots between first plane of reflection of this light type light element and one second plane of reflection.

Further, the hole slot of this light type light element is the groove that runs through of long strip type.

Further, the hole slot of this light type light element is a through hole.

Description of drawings

Fig. 1 is the schematic perspective view according to the utility model first embodiment;

Fig. 2 is the profile of the AA face shown in Fig. 1;

Fig. 3 is the profile of the BB face shown in Fig. 1;

Fig. 4 is the generalized section of the made lighting device of the optical module of utilization the utility model;

Fig. 5 is the distribution curve flux of the made street lamp of the optical module that does not have the utility model;

Fig. 6 is the distribution curve flux of the made street lamp of the optical module of utilization the utility model;

Fig. 7 is the distribution curve flux of the made street lamp of the optical module of utilization the utility model;

Fig. 8 A is the stereogram according to the utility model second embodiment;

Fig. 8 B is the profile according to the utility model second embodiment;

Fig. 9 is the stereogram according to the utility model the 3rd embodiment.

[main element symbol description]

The A optical module

The A1 optical module

The A2 optical module

The C light fixture

1 smooth type light element

11 first planes of reflection

12 second planes of reflection

13 spaces

14 hole slots

The 14A hole slot

2 anti-dazzle light elements

The 20A first leaded light plate body

The 20B second leaded light plate body

21 first light guiding surfaces

22 second light guiding surfaces

4 lamp housings

41 accommodation spaces

42 lens

5 light emitting diode matrixs

51 circuit boards

52 light emitting diodes

6 cooling bases

θ ₁Angle

θ ₂Angle

ψ ₁Angle

ψ ₂Angle

The specific embodiment

For making purpose, characteristic and the effect of being familiar with this skill personage and understanding the utility model, now through following specific embodiment, and conjunction with figs., to the utility model explain in detail as after.

As shown in Figure 1, be the optical module of the light emitting diode of the utility model.The optical module A of the utility model applies to a light emitting diode matrix place; Make of guiding and the reflection of the light of light emitting diode matrix, illumination zone interior illumination, brightness, the uniformity, illumination efficiency and Luminaire efficiency etc. all must be waited meet and to ask through optical module A.This optical module A mainly comprises and is at least one light type light element 1 and is at least an anti-dazzle light element 2.Should many group light type light elements 1 adopt side by side that mode is provided with, each this light type light element 1 of group is comprising that one first plane of reflection 11 and one second plane of reflection 12 constitute (as shown in Figure 2).This first plane of reflection 11 and second plane of reflection 12 are and are oppositely arranged, and this first plane of reflection 11 has an angle theta with center line ₁, second plane of reflection 12 has an angle theta with center line ₂, angle theta ₁, θ ₂Between or equal within 0 °～89 °; This θ in the present embodiment ₂It is 0 degree.This first plane of reflection 11 and second plane of reflection 12 have a space 13, and these space 13 usefulness see through for light and be anti-regional as light, and these space 13 bottom most position are changed to the part that is provided with of light source.This light source can be light emitting diode.Like Fig. 1, shown in Figure 3; Each is organized anti-dazzle light element 2 and comprises one first light guiding surface 21 and one second light guiding surface 22; This first light guiding surface 21 and second light guiding surface 22 are arranged at the left and right sides of aforementioned lights type light element 1 respectively, have an angle ψ respectively between this first light guiding surface 21, second light guiding surface 22 and the center line ₁, ψ ₂, this angle ψ ₁, ψ ₂Between or equal within 0 °～89 °.This angle ψ in the present embodiment ₁=angle ψ ₂

The composition structure of the optical module A of the utility model is not to be the single type body, different type bodies will just be arranged according to the difference of member, but must all form light type light element and anti-dazzle light element.Earlier do explanation (as shown in Figure 1) with a kind of embodiment wherein at this, in the present embodiment, a plurality of first light guiding surfaces 21 of this anti-dazzle light element 2 and a plurality of second light guiding surface 22 are respectively that single the large-area first leaded light plate body 20A forms.Be provided with a plurality of second leaded light plate body 20B in addition; Each second leaded light plate body 20B has one first plane of reflection 11 and one second plane of reflection 12 respectively; A plurality of second leaded light plate body 20B both sides side by side then respectively with the first leaded light plate body 20A with combine, so just form the optical module A of the utility model.

This light type light element 1 main purpose is with light source irradiation horizontal (direction of having a lot of social connections) light beam in non-effective lighting scope; Through first plane of reflection 11 and vertical (direction of traffic) effective lighting scope of second plane of reflection, 12 reflected backs; Make the light type that originally was the concentric circles distribution be adjusted into flat distribute light type, to meet the demand of area to be illuminated territory shape.This first plane of reflection 11 and second plane of reflection 12 can be adopted symmetric mode or asymmetric manner.In the present embodiment, be to adopt asymmetric manner, i.e. angle theta ₁Be not equal to angle theta ₂The vertical height and the angle theta of this first plane of reflection 11 and second plane of reflection 12 ₁, θ ₂Be according to direction of traffic (vertically), the direction of having a lot of social connections (laterally), and the direction of light source optical axis calculate and get according to the certain party formula, but still must cooperate differences such as lamp installation position, the light fixture elevation angle, arm length, and the light type of both sides of the edge, area to be illuminated territory is pressed close in generation.

These anti-dazzle light element 2 main purposes are vertical (direction of traffic) light beams of illumination zone that light source irradiation is contained at non-light fixture, in the illumination zone that contains via first light guiding surface 21 and 22 reflections of second light guiding surface, thus, improve illumination efficiency.And this anti-dazzle light element 2 also can be avoided vertical dazzle.

In addition in the present embodiment, in order to improve Luminaire efficiency, the reflectivity of this first plane of reflection 11 and second plane of reflection 12, first light guiding surface 21 and second light guiding surface 22 reaches more than 85%.Be to form the high reflectance material at each plane of reflection or light guiding surface in the present embodiment, the for example silver-plated metal or the metal of aluminizing, so reflectivity is up to 95% can make the light decay of each reflection fall to reach minimum.

In order to understand the kenel of the actual use of the utility model, the spy provides a light fixture graphic with aid illustration.As shown in Figure 4, the generalized section of the light fixture that the optical module of use the utility model is made.This light fixture C comprises the optical module A an of lamp housing 4, a light emitting diode matrix 5, a cooling base 6 and the utility model, and these lamp housing 4 inside have an accommodation space 41, and this accommodation space 41 supplies light emitting diode matrixs 5 and optical module A to be arranged at inside.This light emitting diode matrix 5 has a circuit board 51 and a plurality of light emitting diode 52; This light emitting diode 52 is multiple row and is distributed in side by side on the circuit board 51; Each row has a plurality of light emitting diodes 52; This each row's light emitting diode 52 corresponding one group of light type light element 1 of aforementioned optics modules A, the space of this light emitting diode 52 between aforementioned first plane of reflection 11 and second plane of reflection 12 located.This cooling base 6 is to be close to aforementioned light emitting diode matrix 5 back sides, and is incorporated into aforementioned lamp housing 4 places.This lamp housing 4 has lens 42, and these lens 42 are positioned at aforementioned this optical module A anterior position, are the path of light penetration.Because this light fixture C is the optical module A that adopts the utility model, can make the light type, illumination, brightness, the uniformity, illumination efficiency of field of illumination etc., all better than traditional approach.

In order more to understand the effect of the utility model, explain with an actual example that is used in street lamp especially.The area to be illuminated territory of road lighting is generally the non-square zone, and mostly ideal zone is rectangular region, and by the area to be illuminated territory need according to actually have a lot of social connections, factor such as lamp distance, lamp height and be adjusted into the existing codes and standards in various countries.Terms and conditions in this example is following:

6 meters of roads width, 6 meters of street lamp height, 18 meters of lamp stand distances, one-sided arrangement installing.

The present embodiment light fixture elevation angle is set at 15 degree, the lamp stand semi-girder is 0.78 meter; Coordinate X is that direction of traffic, coordinate Y are the direction of having a lot of social connections; Light fixture is positioned at initial point (X=0; Therefore Y=0), single LED light fixture need be responsible for the illumination of the road scope of X=-9～9m, Y=0～6m, and this scope also is the illumination zone of code requirement.

The height of the light type light element of the optical module in this light fixture is all 20mm, and shape is all the plane, the angle theta of first, second plane of reflection of this light type light element ₁, θ ₂Be respectively the angle ψ of 12 degree and 7 degree, the anti-dazzle light element in two ends ₁, ψ ₂Be all 0 degree, this optical module adopts high reflectance material (like the silver-plated metal or the metal of aluminizing), so reflectivity is up to 95%.

4. LED source employing light type (Radiation pattern) is Lambertian, and total lumen number is 1136Lm.

As shown in Figure 5, be the road illumination distribution map of the made street lamp of the optical module that does not use the utility model.This Illumination Distribution figure is the state of single street lamp.Maximal illumination is 6.4Lux.D1 is the distribution map of isophete 1Lux, and D2 is the distribution map of isophete 2Lux, and D3 is the distribution map of isophete 6Lux, and the D1 among subsequent figures 6, Fig. 7, D2 and D3 also represent the identical meaning.Existing street lamp is because of the optical module of no the utility model; The light type of LED source is an axial symmetry; So the Illumination Distribution figure that direct illumination produces on the road surface also presents concentrically ringed smooth type distribution; So many light emitting diode light beams are radiated at (being the zone of Y=0～-6) outside the road scope, just as waste.

As shown in Figure 6, be the road illumination distribution map of the made street lamp of the optical module that uses the utility model.This illumination profile figure is the state of single street lamp.Maximal illumination is 16.2Lux.Because optical module effectively goes back to the former beam reflection that drops on outside the road scope of LED source to effective road surface; For example equiluminous curve 6Lux scope becomes greatly a lot, the illumination maximum promotes nearly 3 times (6.4Lux promotes and is 16.2Lux); The distribution that the road illumination distribution map that produces presents flat ellipse; The light type is pressed close to area to be illuminated territory shape, improves the light source utilization rate.

As shown in Figure 7, be the road illumination distribution map of the made street lamp of the optical module that uses the utility model.This is the state of three street lamps, and (left adjacent dypass lamp is positioned at X=-18m to adjacent dypass lamp about adding, and Y=0, right adjacent dypass lamp are positioned at X=18m, road illumination distribution map Y=0).Maximal illumination is 16.6Lux.As shown in the figure; The strip that the light type has contained sidelines, road both sides distributes, and appears and more presses close to effective road surface scope, and it is many that average illumination is that 8.3Lux exceeds twice than no optics modular design (3.8Lux); Uniformity of illuminance is 0.34; All can meet 6m road lighting standard, and illumination efficiency can be up to 79%, more high than the illumination efficiency 40%～50% of general conventional light source.

The optical module of the utility model is not a kind of mode only for previous embodiment, and the structure of two kinds of different kenels below is provided.Shown in Fig. 8 A, Fig. 8 B figure, be second kind of stereogram and profile of implementing illustration of the utility model.Be still by being at least a smooth type light element 1 and being at least 2 of anti-dazzle light elements at this optical module of present embodiment A1 and constitute.But in the present embodiment, first plane of reflection 11 of this light type light element 1 and second plane of reflection 12 are and are symmetrical set angle theta ₁=angle theta ₂Then form a plurality of hole slots 14 between other first plane of reflection 11 and second plane of reflection 12, this hole slot 14 supplies light emitting diode setting or light.This hole slot 14 is a circular hole in the present embodiment, the size of single light emitting diode of form fit.Each group light type light element 1 is corresponding by one group of anti-dazzle light element 2.This first light guiding surface 21 and second light guiding surface 22 lay respectively at the both sides of this light type light element 1, and this light guiding surface 21 forming two differing tilt angles, and second light guiding surface 22 is also forming two different angles of inclination.

As shown in Figure 9, be the third enforcement illustration of the utility model.Identical at present embodiment with example structure and the shape major part of Fig. 8 A; Difference is; Still form a plurality of hole slot 14A between first plane of reflection 11 of the optical module A2 of present embodiment and second plane of reflection 12; But this hole slot 14A is a long strip type in the present embodiment, and this hole slot 14A can supply a plurality of light emitting diode settings wherein.Hence one can see that, and the optical module of the utility model is not limited to unimodality, visual different must asking, and changing optical module is relative shape.

Comprehensive the above, the optical module of the utility model has following several advantages:

1. can according to bright requirement, be adjusted to optimal smooth type and distribute, and can prevent dazzle, reach preferable illumination efficiency;

2. prevent dazzle;

3. simple in structure, and can be according to various conditions, for example actually have a lot of social connections, lamp is high apart from, lamp ... etc., design relative optical module fast, be easily installed in the light fixture on lamp road;

4. adopt the high reflectance material to be formed at each plane of reflection or the light guiding surface of optical module, promote illumination efficiency and Luminaire efficiency.

The above is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the said principle of the utility model, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.

Claims (13)

1. the optical module of a light emitting diode, this optical module is equipped with in a light emitting diode matrix place, it is characterized in that, comprising:

At least one smooth type light element, each this light type light element of group is comprising that one first plane of reflection and one second plane of reflection constitute, and this first plane of reflection and second plane of reflection are and are oppositely arranged, and this first plane of reflection and center line have an angle theta ₁, and second plane of reflection and center line also have an angle theta ₂, angle theta ₁, θ ₂Between or equal 0 °～89 °;

At least one anti-dazzle light element; Each is organized anti-dazzle light element and comprises one first light guiding surface and one second leaded light reflective surface; This first light guiding surface and second light guiding surface are arranged at aforementioned lights type light element both sides respectively, and this first light guiding surface, second light guiding surface and center line have an angle Ψ ₁, Ψ ₂, this angle Ψ ₁, Ψ ₂Between+89 ° to-89 °.

2. the optical module of light emitting diode as claimed in claim 1; It is characterized in that; This light emitting diode matrix has a circuit board and a plurality of light emitting diode; This light emitting diode is multiple row and is distributed in side by side on the circuit board, each row's light emitting diode corresponding aforementioned one group of light type light element, this light emitting diode is between aforementioned first plane of reflection and second plane of reflection.

3. the optical module of light emitting diode as claimed in claim 1 is characterized in that, this light type light element is that many groups are arranged side by side, and combines with this anti-dazzle light element.

4. the optical module of light emitting diode as claimed in claim 1 is characterized in that, the light type light element of this optics LGP is asymmetrical design, i.e. this angle theta ₁Be not equal to angle theta ₂

5. the optical module of light emitting diode as claimed in claim 1 is characterized in that, the light type light element of this optics LGP is the design of symmetry, i.e. this angle theta ₁Equal angle theta ₂

6. the optical module of light emitting diode as claimed in claim 1 is characterized in that, first, second plane of reflection reflectivity of light type light element reaches more than 85%.

7. the optical module of light emitting diode as claimed in claim 6 is characterized in that, first, second plane of reflection electroplate of light type light element.

8. the optical module of light emitting diode as claimed in claim 6 is characterized in that, aluminizes in first, second plane of reflection surface of light type light element.

9. the optical module of light emitting diode as claimed in claim 1 is characterized in that, first, second light guiding surface reflectivity of anti-dazzle light element reaches more than 85%.

10. the optical module of light emitting diode as claimed in claim 1 is characterized in that, has a space between first plane of reflection of this light type light element and one second plane of reflection.

11. the optical module of light emitting diode as claimed in claim 1 is characterized in that, has a plurality of hole slots between first plane of reflection of this light type light element and one second plane of reflection.

12. the optical module of light emitting diode as claimed in claim 1 is characterized in that, the hole slot of this light type light element is the groove that runs through of long strip type.

13. the optical module of light emitting diode as claimed in claim 1 is characterized in that, the hole slot of this light type light element is a through hole.

Images