CN101626054B - Aspherical wide irradiation-angle optical lens and light-emitting diode (LED) component formed by same - Google Patents

Abstract

The invention discloses an aspherical wide irradiation-angle optical lens and a light-emitting diode (LED) component formed by the same. The aspherical optical lens is provided with a concave surface on the light source side and a convex surface on the imaging side, and the LED component formed by the aspherical optical lens can focus the light emitted by an LED chip and can form the round light having the wide irradiation angle of more than 72 degrees and less than 180 degrees with uniform strength. Therefore, the light emitted by an LED can be focused into a preset shape by only one aspherical optical lens, and the aspherical wide irradiation-angle optical lens and the LED component formed by the same can achieve the luminous flux ratio of more than 85 percent and can be used for the illumination and the flash lamp of the cell phone or the camera.

Description

Aspherical wide irradiation-angle optical lens and the light-emitting diode component that is constituted thereof

Technical field

The light-emitting diode component that the present invention relates to a kind of aspherical wide irradiation-angle optical lens and constituted, relate in particular to a kind of optical mirror slip of the LED of being applied to light emitting source generation light type, with the light-emitting diode component that is constituted, and can be applicable to the photoflash lamp of LED illumination, mobile phone or camera.

Background technology

LED has low-voltage, low power consumption, long advantage of life-span, has been widely used in demonstration (indicator), illumination fields such as (illuminator).But light color is simple because LED has more, the miniaturization planar package, has used on the photoflash lamp of mobile phone camera.Yet because the light that sends of led chip is by the point-source of light emission, and have the characteristic of brightness irregularities, so the researcher carried out multinomial research to the gathering of light, as dwindled chip, improve luminous efficiency.In addition, using optical mirror slip also is important techniques exploitation direction.

In the design of LED optical mirror slip, can be divided into an optical mirror slip (primary optical lens) and secondary optics eyeglass (secondary optical lens); An optical mirror slip is the lens that directly encapsulate on led chip, generally to assemble (concentrate) light; The secondary optics eyeglass is for using the lens at single or number LEDs arrays (Array), based on dispersed light beam.On a known optics design, for example ES2157829 uses non-spherical lens, Japan Patent JP3032069, JP2002-111068, the JP2005-203499 of symmetry, and U.S. Pat 2006/187653, Chinese patent CN101013193 etc. use spherical lens, JP2002-221658 that the LED of body (Bulk) type is used spherical lens etc.Application for high-order, an optical mirror slip is except that wanting the energy collected light, more wanting can be in the specific light type (distribution pattern) of luminous intensity (peak intensity) generation uniformly, special light types such as wide-angle, low-angle, circle, ellipse for example, thereby the collocation led array uses, to produce best optical effect.The application of an optical mirror slip as shown in Figure 1, on led chip 21, cover lens 23, clog silica gel (silicon gel) between lens 23 and the led chip 21, led chip 21 can use the chip that sends blue light, then contain yellow fluorescent powder (phosphors) in the silica gel, become white light when led chip 21 sends blue light via the fluorescent material Wavelength-converting (wave-length conversion) of silica gel, emit beam after assembling via lens 23.In the prior art of this optical mirror slip, as Japan Patent JP2004-356512, JP2005-229082, JP2006-072874, JP2007-140524, JP2007-115708 etc.; U.S. Pat 2005/162854, US2006/105485, US2006/076568, US2007/114551, US2007/152231, US7,344,902, US7,345,416, US7,352,011; Taiwan patent TW M332796 etc. use optical mirror slip to produce the light type; Japan Patent JP60007425, United States Patent (USP) WO/2007/100837 produce elliptical light type etc. for another example; Or as rectangle, square or the strip light type etc. of Chinese patent 200710118965.0 generations less than 160 degree.

Progress along with science and technology, electronic product constantly develops towards compact and multi-functional direction, and in the electronic product as: digital camera (Digital Still Camera), computer cameras (PCcamera), network cameras (Network camera), mobile phone (mobile phone) etc. have possessed outside the camera lens, even personal digital assistance devices such as (PDA) also has the demand of setting up camera lens; Therefore the LED photoflash lamp or the illuminating LED light fixture that are used for this series products, Chang Yidan or plurality of LEDs assembly composition array; And for easy to carry and meet the demand of hommization, LED photoflash lamp or illuminating LED light fixture not only need to possess the luminous flux that meets, and arrange in pairs or groups mutually with the type LED assembly that is used for not sharing the same light, and also need smaller volume and lower cost simultaneously.On the demand of an optical mirror slip of LED, existing complicated appearance or the optical mirror slip with diffraction face have the difficulty of manufacturing, plastic injection-moulded distortion, glass ware forming is difficult or shortcoming such as cost height.Therefore, the user presses for that external form is simple, the light-emitting diode eyeglass that is easy to make and the light-ray condensing that can send LED and produce uniform luminous intensity (peak intensity) and greater than 120 ° of wide according to angle circular light types less than 180 °, and the LED assembly that forms greater than 85% described light-emitting diode eyeglass of luminous flux ratio.

Summary of the invention

Main purpose of the present invention is to provide a kind of aspherical wide irradiation-angle optical lens, to be applied on the LED assembly.This LED assembly comprises: light-emitting diode chip for backlight unit (LED die) emits beam being used to; Optical mirror slip is to be used for collected light and to form greater than 120 ° of wide angle circular light types that shine less than 180 ° with uniform luminous intensity; Sealing (seal gel) is filled between optical mirror slip and the light-emitting diode being used to.Wherein, described optical mirror slip is the made eyeglass of optical material with concave surface and convex surface, and its concave surface is the light source-side optical face towards light source, and its convex surface is the imaging side optical surface towards the imaging side, at least one optical surface of described optical mirror slip is an aspheric surface, can meet the following conditions:

$0.1\&le;\left|\frac{R_1-R_2}{R_1+{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}\right|<1.0---\left(1\right)$

$0.7\&le;\frac{{{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_1}^2}{3\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">d</figure-callout>}}_2\&CenterDot;\mathrm{fs}}\&le;18---\left(2\right)$

$0.001\&le;(N_{d2}-1)\frac{{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">d</figure-callout>}}_2}{\mathrm{fs}}\&le;0.03---\left(3\right)$

Wherein, fs is length, the R of the effective focal length (effective focal length) of described optical mirror slip ₁Radius of curvature, R for the light source-side optical face ₂Radius of curvature, d for imaging side optical surface ₂Be central shaft optical mirror slip thickness, N _D2Refractive index for optical mirror slip.

Another purpose of the present invention is to adopt optical glass or optical plastic to make described optical mirror slip, makes to use to select conveniently.

Another purpose of the present invention is to provide a kind of light-emitting diode component, it comprises aspherical wide irradiation-angle optical lens and light-emitting diode chip for backlight unit as described in the present invention, it is characterized in that described light-emitting diode component, have greater than 120 ° less than 180 ° wide according to angle circular light type, its luminous flux ratio greater than 85% (beta/alpha 〉=85%), and meet the following conditions:

Wherein,

$\mathrm{fg}=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;\mathrm{fs}|---\left(5\right)$

Wherein, fs is that length, the fg of the effective focal length (effective focal length) of this optical mirror slip are length, the R of the relative focal length (relative focal length) of this optical mirror slip ₁Radius of curvature, R for the light source-side optical face ₂For radius of curvature, 2 ω of imaging side optical surface be led chip emit beam with the axisymmetric maximum angle in center,

Is that luminous flux, the β that led chip emits beam is the luminous flux of the relative unlimited distance of imaging side (100 times of fs) light for penetrating light via optical mirror slip with the axisymmetric maximum angle in center, α.

Thus, optical mirror slip of the present invention reaches the light-emitting diode component of being made up of described optical mirror slip can have greater than 120 ° of wide angle circular light types that shine less than 180 °, and meet luminous flux ratio greater than 85% requirement, and the advantage that described optical mirror slip has simple shape, thin thickness, is easy to make, can be used for single LEDs or led array, provide photoflash lamp to use as illumination or mobile phone, camera.

Description of drawings

Fig. 1 is the schematic diagram that the LED optical mirror slip is used for the LED assembly of prior art;

Fig. 2 is the schematic diagram that the LED optical mirror slip is used for the LED assembly of the present invention;

Fig. 3 is a LED optical mirror slip light path schematic diagram of the present invention;

Fig. 4 is the LED assembly light intensity distributions and the polar coordinates graph of a relation that shines the angle of first embodiment of the invention;

Fig. 5 is the LED assembly light intensity distributions and the polar coordinates graph of a relation that shines the angle of second embodiment of the invention;

Fig. 6 is the LED assembly light intensity distributions and the polar coordinates graph of a relation that shines the angle of third embodiment of the invention;

Fig. 7 is the LED assembly light intensity distributions and the polar coordinates graph of a relation that shines the angle of fourth embodiment of the invention;

Fig. 8 is the LED assembly light intensity distributions and the polar coordinates graph of a relation that shines the angle of fifth embodiment of the invention;

Fig. 9 is the LED assembly light intensity distributions and the polar coordinates graph of a relation that shines the angle of sixth embodiment of the invention; And

Figure 10 is the LED assembly light intensity distributions and the polar coordinates graph of a relation that shines the angle of seventh embodiment of the invention.

Main symbol description

The 10:LED assembly; 11,21:LED chip;

12: sealing; 13: optical mirror slip;

23: lens; R ₁: light source-side optical face or its radius of curvature;

R ₂: imaging side optical surface or its radius of curvature;

d ₀: led chip thickness on the central shaft;

d ₁: the led chip surface is to the optical surface distance of optical mirror slip light source side on the central shaft;

d ₂: central shaft optical mirror slip thickness.

Embodiment

For making the present invention clearer and more definite, in conjunction with the embodiments and accompanying drawing, structure of the present invention and technical characterictic are described in detail.

Fig. 2 is the schematic diagram that aspherical wide irradiation-angle optical lens of the present invention and the light-emitting diode component that constituted thereof are applied to the LED assembly, its arrangement along central shaft Z is followed successively by by light source to imaging side: led chip 11, sealing 12 and optical mirror slip 13, light is sent by led chip 11, through after the sealing 12, light-ray condensing is also formed to be symmetrical in shining to the imaging side greater than 120 ° of wide light beams according to angle circular light type less than 180 ° of central shaft Z by optical mirror slip 13.Described optical mirror slip 13 is for having the made eyeglass of optical material of concave surface and convex surface, and its concave surface is the light source-side optical face R towards light source ₁, and its convex surface is the imaging side optical surface R towards the imaging side ₂, described optical mirror slip 13 at least one optical surface are aspheric surface.The optical surface R of optical mirror slip 13 ₁With R ₂Reach the condition that satisfies formula (1), formula (2) and formula (3) between effective focal length length, the angle of the light type that angle 2 ω of led chip 11 emissions and optical mirror slip 13 formed luminous intensities form

Satisfy the condition of formula (4).

Wherein, sealing 12 does not limit uses for which kind of material, optical resin (resin) commonly used or silica gel different materials such as (silicon gel) on the LED assembly.

The optical surface R of optical mirror slip 13 ₁With R ₂If constituted with the aspherics face, its aspheric equation (Aspherical Surface Formula) is formula (6)

$Z=\frac{{\mathrm{<figure-callout\; id="2"\; label="ch"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">ch</figure-callout>}}^2}{1+\sqrt{(1-(1+K)c^2{h}^2)}}+A_4{h}^4+A_6{h}^6+A_8{h}^8+A_{10}{h}^{10}---\left(6\right)$

Wherein, c is a curvature, and h is the eyeglass height, and K is circular cone coefficient (Conic Constant), A ₄, A ₆, A ₈, A ₁₀The asphericity coefficient (Nth Order AsphericalCoefficient) on difference four, six, eight, ten rank.

Fig. 3 is a light path schematic diagram of the present invention, and the maximum angle that led chip 11 emits beam is 2 ω (with central shaft Z symmetries), via optical mirror slip 13 assemble and the refraction back with

Angle (with central shaft Z symmetry) forms needed smooth type and reaches the requirement of beta/alpha 〉=70%, wherein, α is that luminous flux, the β that led chip emits beam is the luminous flux of the relative unlimited distance of imaging side (100 times of fs) light, and ignores the refraction (refraction) and scattering effects such as (scattering) of air.And described optical mirror slip 13 can utilize optical glass or optical plastic to make.

According to said structure, aspherical wide irradiation-angle optical lens of the present invention and the light-emitting diode component that is constituted thereof can meet greater than 120 ° of wide requirements according to angle circular light type less than 180 °, make LED assembly 10 can send predetermined light type, and meet of the requirement of luminous flux ratio, can use or form array with the type of not sharing the same light and use for single greater than 85% (beta/alpha 〉=85%).

Be the embodiment of explanation practical application of the present invention, use chip, the optical mirror slip 13 of 1.0 * 1.0mm size to use the eyeglass of diameter 5mm to describe, be beneficial to the application scenarios of each embodiment of comparison as example with led chip 11.Yet led chip 11 sizes and optical mirror slip 13 diameters are not to limit as above-mentioned size.

＜the first embodiment 〉

Fig. 2 and Fig. 4 are respectively the light intensity distributions and the polar coordinates graph of a relation that shines the angle that optical mirror slip is applied to the schematic diagram and first embodiment of LED assembly of the present invention.

Show light source-side optical face R in the following tabulation () respectively by the led chip 11 of light source side to the imaging side along central shaft Z, sealing 12, optical mirror slip 13 ₁With imaging side optical surface R ₂Radius of curvature R (unit: mm) (unit: mm) (the on-axissurface spacing), the maximum angle that led chip 11 emits beam are the emit beam maximum angle of light type of 2 ω (degree deg), optical mirror slip 13 for (the radius of curvature R), spacing d

(degree deg), each refractive index N _d, each Abbe number (Abbe ' s number) ν _d, each thickness (thickness).

Table (one)

* aspheric surface

In table (), it is the aspherics face that optical surface (Surf) has mark *'s.Following tabulation (two) is every coefficient of the aspheric surface formula (6) of each optical surface:

Table (two)

In the present embodiment, sealing 12 utilizes refractive index N _D1Be 1.527, Abbe number ν _D1Be that 34 transparent optical silica gel is filled and formed; Optical mirror slip 13 utilizes refractive index N _D2Be 1.5828, Abbe number ν _D2Be that 61.7 glass material is made.Thus, the refraction coefficient and the Abbe number of collocation sealing 12 and optical mirror slip 13 form the light refraction angle.Led chip 11 sends the blue light of α=13.928 lumens, effective maximum angle is 80 °, and the length fs of the effective focal length of optical mirror slip 13 is-36.114mm.After assembling via described optical mirror slip 13, in 160 ° wide β=13.813 lumens (ignoring effects such as the refraction of air and scattering) that shine unlimited distance (being) according to angles with 100 times of fs; Formula (1)-(5) are respectively:

$\left|\frac{R_1-R_2}{R_1+{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}\right|=0.9031$

$\frac{{{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_1}^2}{3\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">d</figure-callout>}}_2\&CenterDot;\mathrm{fs}}=2.4589$

$(N_{d2}-1)\frac{{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">d</figure-callout>}}_2}{\mathrm{fs}}=0.0242$

$\mathrm{fg}=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;\mathrm{fs}|=1.7137$

β/α＝98.96％

From following formula as can be known, described every coefficient formula (1)-(5) that can satisfy condition.The light that Fig. 3 sends for led chip 11, through the index path of sealing 12 and optical mirror slip 13, Fig. 4 is light intensity distributions and the polar coordinates graph of a relation that shines the angle.By above-mentioned table (), table (two) and shown in Figure 4, provable thus aspherical wide irradiation-angle optical lens of the present invention has simple face shape, be easy to make and can make light-emitting diode component that predetermined light type is arranged, the luminous intensity advantage of uniform of its each angle, and then can promote application of the present invention.

＜the second embodiment 〉

Fig. 2 and Fig. 5 are respectively the light intensity distributions and the polar coordinates graph of a relation that shines the angle that optical mirror slip is applied to the schematic diagram and second embodiment of LED assembly of the present invention.

Show light source-side optical face R in the following tabulation (three) respectively by the led chip 11 of light source side to the imaging side along central shaft Z, sealing 12, optical mirror slip 13 ₁With imaging side optical surface R ₂Radius of curvature R, spacing d, the maximum angle that led chip 11 emits beam is the emit beam maximum angle of light type of 2 ω, optical mirror slip 13 Each refractive index N _d, each Abbe number ν _d, each thickness (thickness).Table (four) is every coefficient of the aspheric surface formula (6) of each optical surface:

Table (three)

* aspheric surface

In table (three), it is the aspherics face that optical surface (Surf) has mark *'s.Following tabulation (four) is every coefficient of the aspheric surface formula (6) of each optical surface:

Table (four)

In the present embodiment, sealing 12 utilizes refractive index N _D1Be 1.527, Abbe number ν _D1Be that 34 transparent optical silica gel is filled and formed.Optical mirror slip 13 utilizes refractive index N _D2Be 1.5828, Abbe number ν _D2Be that 61.7 glass material is made.Arrange in pairs or groups the thus refraction coefficient and the Abbe number of sealing 12 and optical mirror slip 13 form the light refraction angle.Led chip 11 sends the blue light of α=13.958 lumens, effective maximum angle is 120 °, and the length fs of the effective focal length of optical mirror slip 13 is-42.375mm.After assembling via described optical mirror slip 13, in 158 ° wide β=11.878 lumens (ignoring effects such as the refraction of air and scattering) that shine unlimited distance (being) according to angles with 100 times of fs; Formula (1)-(5) are respectively:

$\left|\frac{R_1-R_2}{{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_1+{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}\right|=0.8181$

$\frac{{{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_1}^2}{3\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">d</figure-callout>}}_2\&CenterDot;\mathrm{fs}}=3.7118$

$(N_{d2}-1)\frac{{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">d</figure-callout>}}_2}{\mathrm{fs}}=0.0117$

$\mathrm{fg}=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;\mathrm{fs}|=1.9068$

β/α＝85.09％

From following formula as can be known, described every coefficient formula (1)-(5) that can satisfy condition.By above-mentioned table (five), table (six) and shown in Figure 5, provable thus aspherical wide irradiation-angle optical lens of the present invention has simple face shape, be easy to make and can make light-emitting diode component that predetermined light type is arranged, the luminous intensity advantage of uniform of its each angle, and then can promote application of the present invention.

＜the three embodiment 〉

Fig. 2 and Fig. 6 are respectively the light intensity distributions and the polar coordinates graph of a relation that shines the angle that the LED optical mirror slip is applied to the schematic diagram and the 3rd embodiment of LED assembly of the present invention.

Show light source-side optical face R in the following tabulation (five) respectively by the led chip 11 of light source side to the imaging side along central shaft Z, sealing 12, optical mirror slip 13 ₁With imaging side optical surface R ₂Radius of curvature R, spacing d, the maximum angle that led chip 11 emits beam is the emit beam maximum angle of light type of 2 ω, optical mirror slip 13

Each refractive index N _d, each Abbe number ν _d, each thickness (thickness).Table (six) is every coefficient of the aspheric surface formula (6) of each optical surface:

Table (five)

* aspheric surface

In table (five), it is the aspherics face that optical surface (Surf) has mark *'s.Following tabulation (six) is every coefficient of the aspheric surface formula (6) of each optical surface:

Table (six)

In the present embodiment, sealing 12 utilizes refractive index N _D1Be 1.527, Abbe number ν _D1Be that 34 transparent optical silica gel is filled and formed.Optical mirror slip 13 utilizes refractive index N _D2Be 1.5828, Abbe number ν _D2Be that 61.7 glass material is made.Arrange in pairs or groups the thus refraction coefficient and the Abbe number of sealing 12 and optical mirror slip 13 form the light refraction angle.Led chip 11 sends the blue light of α=13.958 lumens, effective maximum angle is 120 °, and the length fs of the effective focal length of optical mirror slip 13 is 86.50mm.After assembling via described optical mirror slip 13, in 164 ° wide β=13.809 lumens (ignoring effects such as the refraction of air and scattering) that shine unlimited distance (being) according to angles with 100 times of fs; Formula (1)-(5) are respectively:

$\left|\frac{R_1-R_2}{{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_1+{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}\right|=0.1517$

$\frac{{{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_1}^2}{3\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">d</figure-callout>}}_2\&CenterDot;\mathrm{fs}}=1.0132$

$(N_{d2}-1)\frac{{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">d</figure-callout>}}_2}{\mathrm{fs}}=0.0102$

$\mathrm{fg}=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;\mathrm{fs}|=1.5465$

β/α＝98.93％

From following formula as can be known, described every coefficient formula (1)-(5) that can satisfy condition.By above-mentioned table (five), table (six) and shown in Figure 6, provable thus aspherical wide irradiation-angle optical lens of the present invention has simple face shape, be easy to make and can make light-emitting diode component that predetermined light type is arranged, the luminous intensity advantage of uniform of its each angle, and then can promote application of the present invention.

＜the four embodiment 〉

Fig. 2 and Fig. 7 are respectively the light intensity distributions and the polar coordinates graph of a relation that shines the angle of the schematic diagram and the 4th embodiment of use LED optical mirror slip of the present invention.

Show light source-side optical face R in the following tabulation (seven) respectively by the led chip 11 of light source side to the imaging side along central shaft Z, sealing 12, optical mirror slip 13 ₁With imaging side optical surface R ₂Radius of curvature R, spacing d, the maximum angle that led chip 11 emits beam is the emit beam maximum angle of light type of 2 ω, optical mirror slip 13

Each refractive index N _d, each Abbe number ν _d, each thickness (thickness).Table (eight) is every coefficient of the aspheric surface formula (6) of each optical surface:

Table (seven)

* aspheric surface

In table (seven), what optical surface (Surf) had mark * is the aspherics face, and following tabulation (eight) is every coefficient of the aspheric surface formula (6) of each optical surface:

Table (eight)

In the present embodiment, sealing 12 utilizes refractive index N _D1Be 1.527, Abbe number ν _D1Be that 34 transparent optical silica gel is filled and formed.Optical mirror slip 13 utilizes refractive index N _D2Be 1.530, Abbe number ν _D2Be that 57 plastic material is made.Arrange in pairs or groups the thus refraction coefficient and the Abbe number of sealing 12 and optical mirror slip 13 form the light refraction angle.Led chip 11 sends the blue light of α=13.958 lumens, effective maximum angle is 120 °, and the length fs of the effective focal length of optical mirror slip 13 is 57.195mm; After assembling via described optical mirror slip 13, in 164 ° wide β=13.864 lumens (ignoring effects such as the refraction of air and scattering) that shine unlimited distance (being) according to angles with 100 times of fs; Formula (1)-(5) are respectively:

$\left|\frac{R_1-R_2}{{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_1+{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}\right|=0.25$

$\frac{{{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_1}^2}{3\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">d</figure-callout>}}_2\&CenterDot;\mathrm{fs}}=1.5382$

$(N_{d2}-1)\frac{{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">d</figure-callout>}}_2}{\mathrm{fs}}=0.014$

$\mathrm{fg}=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;\mathrm{fs}|=1.9065$

β/α＝99.32％

From following formula as can be known, described every coefficient formula (1)-(5) that can satisfy condition.By above-mentioned table (seven), table (eight) and shown in Figure 7, provable thus aspherical wide irradiation-angle optical lens of the present invention has simple face shape, be easy to make and can make light-emitting diode component that predetermined light type is arranged, the luminous intensity advantage of uniform of its each angle, and then can promote application of the present invention.

＜the five embodiment 〉

Fig. 2 and Fig. 8 are respectively the light intensity distributions and the polar coordinates graph of a relation that shines the angle that the LED optical mirror slip is applied to the schematic diagram and the 5th embodiment of LED assembly of the present invention.

Show light source-side optical face R in the following tabulation (nine) respectively by the led chip 11 of light source side to the imaging side along central shaft Z, sealing 12, optical mirror slip 13 ₁With imaging side optical surface R ₂Radius of curvature R, spacing d, the maximum angle that led chip 11 emits beam is the emit beam maximum angle of light type of 2 ω, optical mirror slip 13

Each refractive index N _d, each Abbe number ν _d, each thickness (thickness).Table (ten) is every coefficient of the aspheric surface formula (6) of each optical surface:

Table (nine)

* aspheric surface

In table (nine), it is the aspherics face that optical surface (Surf) has mark *'s.Following tabulation (ten) is every coefficient of the aspheric surface formula (6) of each optical surface:

Table (ten)

In the present embodiment, sealing 12 utilizes refractive index N _D1Be 1.527, Abbe number ν _D1Be that 34 transparent optical silica gel is filled and formed.Optical mirror slip 13 utilizes refractive index N _D2Be 1.5828, Abbe number ν _D2Be that 61.7 glass material is made.Arrange in pairs or groups the thus refraction coefficient and the Abbe number of sealing 12 and optical mirror slip 13 form the light refraction angle.Led chip 11 sends the blue light of α=13.958 lumens, effective maximum angle is 120 °, and the length fs of the effective focal length of optical mirror slip 13 is-143.15mm.After assembling via described optical mirror slip 13, in 164 ° wide β=11.923 lumens (ignoring effects such as the refraction of air and scattering) that shine unlimited distance (being) according to angles with 100 times of fs; Formula (1)-(5) are respectively:

$\left|\frac{R_1-R_2}{{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_1+{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}\right|=0.5$

$\frac{{{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_1}^2}{3\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">d</figure-callout>}}_2\&CenterDot;\mathrm{fs}}=7.1671$

$(N_{d2}-1)\frac{{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">d</figure-callout>}}_2}{\mathrm{fs}}=0.00305$

$\mathrm{fg}=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;\mathrm{fs}|=1.9087$

β/α＝85.42％

From following formula as can be known, described every coefficient formula (1)-(5) that can satisfy condition.Show by above-mentioned table (nine), table (ten) and Fig. 8, provable thus aspherical wide irradiation-angle optical lens of the present invention has simple face shape, be easy to make and can make light-emitting diode component that predetermined light type is arranged, the luminous intensity of its each angle is even, and then can promote application of the present invention.

＜the six embodiment 〉

Fig. 2 and Fig. 9 are respectively the light intensity distributions and the polar coordinates graph of a relation that shines the angle that the LED optical mirror slip is applied to the schematic diagram and the 6th embodiment of LED assembly of the present invention.

Show light source-side optical face R in the following tabulation (11) respectively by the led chip 11 of light source side to the imaging side along central shaft Z, sealing 12, optical mirror slip 13 ₁With imaging side optical surface R ₂Radius of curvature R, spacing d, the maximum angle that led chip 11 emits beam is the emit beam maximum angle of light type of 2 ω, optical mirror slip 13

Each refractive index N _d, each thickness (thickness), each Abbe number ν _dTable (12) is every coefficient of the aspheric surface formula (6) of each optical surface:

Table (11)

* aspheric surface

In table (11), it is the aspherics face that optical surface (Surf) has mark *'s.Following tabulation (12) is every coefficient of the aspheric surface formula (6) of each optical surface:

Table (12)

In the present embodiment, sealing 12 utilizes refractive index N _D1Be 1.527, Abbe number ν _D1Be that 34 transparent optical silica gel is filled and formed.Optical mirror slip 13 utilizes refractive index N _D2Be 1.5828, Abbe number ν _D2Be that 61.7 glass material is made.Arrange in pairs or groups the thus refraction coefficient and the Abbe number of sealing 12 and optical mirror slip 13 form the light refraction angle.Led chip 11 sends the white light of α=78.5 lumens, effective maximum angle is 130 °, and the length fs of the effective focal length of optical mirror slip 13 is 142.96mm.After assembling via described optical mirror slip 13, in 160 ° wide β=69.168 lumens (ignoring effects such as the refraction of air and scattering) that shine unlimited distance (being) according to angles with 100 times of fs.Formula (1)-(5) are respectively:

$\left|\frac{R_1-R_2}{{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_1+{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}\right|=0.666$

$\frac{{{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_1}^2}{3\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">d</figure-callout>}}_2\&CenterDot;\mathrm{fs}}=11.9941$

$(N_{d2}-1)\frac{{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">d</figure-callout>}}_2}{\mathrm{fs}}=0.00285$

$\mathrm{fg}=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;\mathrm{fs}|=1.9056$

β/α＝88.11％

From following formula as can be known, described every coefficient formula (1)-(5) that can satisfy condition.By above-mentioned table (ten), table (11) and shown in Figure 9, provable thus aspherical wide irradiation-angle optical lens of the present invention has simple face shape, be easy to make and can make light-emitting diode component that predetermined light type is arranged, the luminous intensity advantage of uniform of its each angle can promote application of the present invention.

＜the seven embodiment 〉

Fig. 2 and Figure 10 are respectively the light intensity distributions and the polar coordinates graph of a relation that shines the angle that the LED optical mirror slip is applied to the schematic diagram and the 7th embodiment of LED assembly of the present invention.

Show light source-side optical face R in the following tabulation (13) respectively by the led chip 11 of light source side to the imaging side along central shaft Z, sealing 12, optical mirror slip 13 ₁With picture side optical surface R ₂Radius of curvature R, spacing d, the maximum angle that led chip 11 emits beam is the emit beam maximum angle of light type of 2 ω, optical mirror slip 13

Each refractive index N _d, each thickness (thickness), each Abbe number ν _dTable (14) is every coefficient of the aspheric surface formula (6) of each optical surface:

Table (13)

* aspheric surface

In table (13), it is the aspherics face that optical surface (Surf) has sign *'s.Following tabulation (14) is every coefficient of the aspheric surface formula (6) of each optical surface:

Table (14)

In the present embodiment, sealing 12 utilizes refractive index N _D1Be 1.527, Abbe number ν _D1Be that 34 transparent optical silica gel is filled and formed.Optical mirror slip 13 utilizes refractive index N _D2Be 1.5828, Abbe number ν _D2Be that 61.7 glass material is made.Arrange in pairs or groups the thus refraction coefficient and the Abbe number of sealing 12 and optical mirror slip 13 form the light refraction angle.Led chip 11 sends the blue light of α=13.958 lumens, effective maximum angle is 130 °, and the length fs of the effective focal length of optical mirror slip 13 is-285.91mm.After assembling via described optical mirror slip 13, in 158 ° wide β=12.557 lumens (ignoring effects such as the refraction of air and scattering) that shine unlimited distance (being) according to angles with 100 times of fs.Formula (1)-(5) are respectively:

$\left|\frac{R_1-R_2}{{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_1+{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}\right|=0.5$

$\frac{{{\mathrm{<figure-callout\; id="1"\; label="R"\; filenames="S2008101377071E00051.png"\; state="\{\{state\}\}">R</figure-callout>}}_1}^2}{3\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">d</figure-callout>}}_2\&CenterDot;\mathrm{fs}}=16.665$

$(N_{d2}-1)\frac{{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="S2008101377071E00041.png,S2008101377071E00051.png"\; state="\{\{state\}\}">d</figure-callout>}}_2}{\mathrm{fs}}=0.00143$

$\mathrm{fg}=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;\mathrm{fs}|=1.9061$

β/α＝89.96％

From following formula as can be known, described every coefficient formula (1)-(5) that can satisfy condition.By above-mentioned table (13), table (14) and shown in Figure 10, provable thus aspherical wide irradiation-angle optical lens of the present invention has simple face shape, be easy to make and can make light-emitting diode component that predetermined light type is arranged, the luminous intensity advantage of uniform of its each angle, and then can promote application of the present invention.

Conclude above-mentioned, the effect of aspherical wide irradiation-angle optical lens of the present invention and the light-emitting diode component that constituted thereof is that it has simple face shape, can utilize technology institutes such as plastic injection-moulded shaping or moulded glass to manufacture in a large number and be not easy and be out of shape, thereby can reduce production costs.

Another effect of aspherical wide irradiation-angle optical lens of the present invention and the light-emitting diode component that constituted thereof is to have predetermined light type because of making from the emitted light of led chip, thereby can promote lighting quality.

The another effect of aspherical wide irradiation-angle optical lens of the present invention and the light-emitting diode component that constituted thereof is that it makes from the emitted light of led chip and all can keeps identical illumination intensity in each angle, make imaging surface not have the part zone and cross bright or dark excessively phenomenon generation, thereby can promote lighting quality.

More than shown in only be the embodiment of the invention, only be illustrative for the purpose of the present invention, and nonrestrictive.Those skilled in the art should be appreciated that, can carry out many changes, modification even equivalence change to it in the spirit and scope that claim of the present invention limited, but all will fall in the interest field of the present invention.

Claims (7)

1. aspherical wide irradiation-angle optical lens, it is used in the light-emitting diode component, and described light-emitting diode component comprises light-emitting diode chip for backlight unit, sealing and the optical mirror slip of being arranged to the imaging side by light source side along central shaft, it is characterized in that:

Described optical mirror slip is the eyeglass with concave surface and convex surface, and described concave surface is the light source-side optical face towards light source, and described convex surface is the imaging side optical surface towards the imaging side, and its at least one optical surface is an aspheric surface; And meet the following conditions:

$0.1\&le;\left|\frac{R_1-R_2}{R_1+R_2}\right|<1.0$

$0.7\&le;\frac{{R_1}^2}{3\&CenterDot;d_2\&CenterDot;\mathrm{fs}}\&le;18$

$0.001\&le;(N_{d2}-1)\frac{d_2}{\mathrm{fs}}\&le;0.03$

Wherein, R ₁Radius of curvature, R for this optical mirror slip light source-side optical face ₂Be the radius of curvature of this optical mirror slip imaging side optical surface, length, the d that fs is the effective focal length of described optical mirror slip ₂Be described optical mirror slip thickness, the N on the central shaft _D2Refractive index for described optical mirror slip.

2. aspherical wide irradiation-angle optical lens according to claim 1 is characterized in that described optical mirror slip is made by plastic material.

3. aspherical wide irradiation-angle optical lens according to claim 1 is characterized in that described optical mirror slip is made by the glass optical material.

4. light-emitting diode component, it comprises aspherical wide irradiation-angle optical lens according to claim 1 and light-emitting diode chip for backlight unit, it is characterized in that described light-emitting diode component, have greater than 120 ° of wide photograph angle circular light types, and meet the following conditions less than 180 °:

Wherein,

$\mathrm{fg}=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;\mathrm{fs}|$

Wherein, fg is the length of the relative focal length of described optical mirror slip, length, the R that fs is the effective focal length of described optical mirror slip ₁Radius of curvature, R for described optical mirror slip light source-side optical face ₂For radius of curvature, the ω of described optical mirror slip imaging side optical surface be described light-emitting diode chip for backlight unit emit beam with the axisymmetric maximum angle in center half, For penetrating light via described optical mirror slip with half of the axisymmetric maximum angle in center.

5. light-emitting diode component according to claim 4 is characterized in that meeting the following conditions the luminous flux ratio of luminous flux that described light-emitting diode component emits beam and the relative unlimited distance of imaging side:

β/α≥85％

Wherein, α is that luminous flux, β that described light-emitting diode chip for backlight unit emits beam are the luminous flux that the relative unlimited distance of described light-emitting diode component imaging side is ignored effects such as the refraction of air and scattering.

6. light-emitting diode component according to claim 4 is characterized in that described light emitting diode (LED) light eyeglass is made by plastic material.

7. light-emitting diode component according to claim 4 is characterized in that described optical mirror slip is made by the glass optical material.

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