CN201252110Y - Non-spherical surface orthographic angle optical lense and LED (light emitting diode) component formed thereby - Google Patents

Abstract

The utility model provides a non-spherical surface orthographic optical lense and an LED (light emitting diode) component formed thereby. The optical lense comprises a non-spherical surface optical lense with the concave surface on the light source side and the convex surface on the image side; the LED component can focus the beam of light emitted by an LED chip and generate a round light spot with an orthographic angle being more than 72 DEG and less than 108 DEG with even light intensity. The optical lense and the LED component meet the interrelation of optical surface curvature radii and interrelation of the incidence angle and the emergences angle. Therefore, the utility model can only use one pure optical lense to focus the beam of light emitted by the LED chip to the predetermined light spot to be used for the illumination of one LED component or a plurality of LED components.

Description

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

Technical field

The light-emitting diode component that the utility model relates to a kind of aspherical positive irradiation-angle optical lens and constituted, specifically, relate to a kind of application led light source and produce the optical mirror slip of light type (distribution pattern) and the light-emitting diode component that is constituted thereof, can or form the illumination use of led array for single.

Background technology

Light-emitting diode (LED) has low-voltage, low power consumption, long advantage of life-span, has been widely used in demonstration (indicator), illumination fields such as (illuminator).Yet, because the light that led chip sends is point-source of light and the characteristic with brightness irregularities, so for how the existing researcher of collected light has carried out multinomial research, except dwindling chip, improving the luminous efficiency, 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 in single or number LEDs arrays (Array), based on dispersed light beam.On an optics design of prior art, for example, ES2157829 uses the non-spherical lens of symmetry, Japan Patent JP3032069, JP2002-111068, JP2005-203499, U.S. Pat 2006/187653, Chinese patent CN101013193 etc. use spherical lens, and Japan Patent JP2002-221658 uses spherical lens etc. to Bulk type LED.Utilization for high-order, an optical mirror slip is except wanting the energy collected light, also need and to produce specific light type with uniform luminous intensity (peak intensity), special light types such as wide-angle, low-angle, circle, ellipse for example, the led array of arranging in pairs or groups uses, to produce best optical effect.The utilization of an optical mirror slip is covered with lens 23 as shown in Figure 1 on led chip 21, when led chip 21 emission light, via the light that sends predetermined light type after lens 23 gatherings.In an optical mirror slip of prior art, as Japan Patent JP2004-356512, JP2005-229082, JP2006-072874, JP2007-140524, JP2007-115708, 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. uses 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 electronic product, possessed outside the camera lens as digital camera (Digital Still Camera), computer cameras (PC camera), network cameras (Network camera), mobile phone (mobile phone) etc., even device such as PDA(Personal Digital Assistant) also has the demand that adds camera lens.Therefore, be used for the LED photoflash lamp or the illuminating LED light fixture of this series products, Chang Yidan or plurality of LEDs assembly composition array.Yet for easy to carry and meet the demand of hommization, LED photoflash lamp or illuminating LED light fixture not only need the luminous flux that meets, so that the type LED assembly of not sharing the same light is arranged in pairs or groups mutually, 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 surfaces have the difficulty of manufacturing, plastics penetrate not shortcoming such as easy-formation or cost height of distortion, glass.Therefore, use external form is simple, be easy to make light-emitting diode lens design and composition, can assemble LED emission light and with uniform luminous intensity (peak intensity) produce greater than 72 ° and less than 108 ° just according to the LED assembly of angle circular light type, and luminous flux ratio is the urgent demand of user greater than 85% requirement.

The utility model content

The utility model main purpose is to provide a kind of aspherical positive irradiation-angle optical lens, and is applied on the LED assembly.This LED assembly by light-emitting diode chip for backlight unit (LED die) with emission light, optical mirror slip with collected light and with even luminous intensity form greater than 72 ° and less than 108 ° just according to angle circular light type, between optical mirror slip and light-emitting diode with sealing (seal gel) formation of being clogged.Wherein, optical mirror slip be have concave surface and convex surface by the made eyeglass of optical material, its concave surface is the light source-side optical face towards light source, its convex surface be towards the picture side picture side optical surface, and at least one optical surface in concave surface and the convex surface is an aspheric surface, and can meet the following conditions:

$0.7\&le;\left|\frac{R_1-R_2}{R_1+{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="Y200820131021E00321.png,Y200820131021E00331.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}\right|\&le;1.0---\left(1\right)$

$8\&le;\frac{{R_1}^2}{3\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="Y200820131021E00321.png,Y200820131021E00331.png"\; state="\{\{state\}\}">d</figure-callout>}}_2\&CenterDot;f_s}\&le;180---\left(2\right)$

$0.2\&le;(N_{d2}-1)\frac{d_2}{f_s}\&le;0.4---\left(3\right)$

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

Make for simplifying, optical mirror slip is replaceable, and its plane is the light source-side optical face towards light source in order to have the optical mirror slip of planoconvex, and its convex surface is that it is an aspheric surface as the side optical surface towards the picture side optical surface of picture side; Can satisfy formula (3) and formula (4) condition:

$0.2\&le;(N_{d2}-1)\frac{d_2}{f_s}\&le;0.4---\left(3\right)$

$0.5\&le;\frac{({\mathrm{<figure-callout\; id="0"\; label="d"\; filenames="Y200820131021E00341.png,Y200820131021E00351.png"\; state="\{\{state\}\}">d</figure-callout>}}_0+d_1+d_2)}{R_2}<1.2---\left(4\right)$

Wherein, R ₂Be the radius of curvature of picture side optical surface, d ₀Be led chip thickness on the central shaft, d ₁For led chip surface on the central shaft to optical mirror slip light source-side optical identity distance from, d ₂Be central shaft optical mirror slip thickness, fs is the length of the effective focal length of this optical mirror slip, N _D2Refractive index for optical mirror slip.

Another purpose of the present utility model is, selects conveniently for using, and optical mirror slip can be optical glass or made by optical plastic.

Another purpose of the present utility model is to provide a kind of light-emitting diodes official assembly, it comprises as aspherical positive irradiation-angle optical lens described in the utility model and light-emitting diode chip for backlight unit, it is characterized in that this light-emitting diode component has greater than 72 ° and less than 108 ° just meet the requirement greater than 85% (beta/alpha 〉=85%), and meet the following conditions according to angle circular light type, its luminous flux ratio:

Wherein,

$f_g=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;f_s|$

Wherein, fs is that length, the fg of the effective focal length (effective focal length) of this optical mirror slip is the length of the suitable focal length (relative focal length) of this optical mirror slip, R ₁Be the radius of curvature of light source-side optical face, R ₂Be the radius of curvature of picture side optical surface, 2 ω be the light of led chip emission with the axisymmetric maximum angle in center, For the light that penetrates via optical mirror slip with the axisymmetric maximum angle in center, α is the luminous flux of the light of led chip emission, β is the luminous flux of the light of the picture relative unlimited distance of side (100 times of fs).

By this, aspherical positive irradiation-angle optical lens of the present utility model and the light-emitting diode component that is constituted thereof can have greater than 72 ° and less than 108 ° just according to angle circular light type, and meet luminous flux ratio greater than 85% requirement, and this optical mirror slip has simple shape, thin thickness, be easy to make, can be used for single LEDs or array LED, the use of throwing light on.

Description of drawings

Fig. 1 is the schematic diagram according to the LED assembly of the use LED optical mirror slip of prior art;

Fig. 2 is the schematic diagram according to the LED assembly of use LED optical mirror slip of the present utility model;

Fig. 3 is the light path schematic diagram according to the LED assembly of LED optical mirror slip of the present utility model;

Fig. 4 is the schematic diagram according to the LED assembly of use planoconvex LED optical mirror slip of the present utility model;

Fig. 5 is the light path schematic diagram according to the LED assembly of use planoconvex LED optical mirror slip of the present utility model;

Fig. 6 is the light intensity distributions and the polar coordinates graph of a relation that shines the angle according to the LED assembly of the utility model first embodiment;

Fig. 7 is the light intensity distributions and the polar coordinates graph of a relation that shines the angle according to the LED assembly of the utility model second embodiment;

Fig. 8 is the light intensity distributions and the polar coordinates graph of a relation that shines the angle according to the LED assembly of the utility model the 3rd embodiment;

Fig. 9 is the light intensity distributions and the polar coordinates graph of a relation that shines the angle according to the LED assembly of the utility model the 4th embodiment;

Figure 10 is the light intensity distributions and the polar coordinates graph of a relation that shines the angle according to the LED assembly of the utility model the 5th embodiment;

Figure 11 is the light intensity distributions and the polar coordinates graph of a relation that shines the angle according to the LED assembly of the utility model the 6th embodiment;

Figure 12 is the light intensity distributions and the polar coordinates graph of a relation that shines the angle according to the LED assembly of the utility model the 7th embodiment; And

Figure 13 is the light intensity distributions and the polar coordinates graph of a relation that shines the angle according to the LED assembly of the utility model the 8th embodiment.

[primary clustering symbol description]

The 10:LED assembly;

11,21:LED chip;

12: sealing;

13: optical mirror slip;

14: optical mirror slip;

23: lens;

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

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

d ₀: the thickness of the led chip on the central shaft;

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

d ₂: the thickness of the optical mirror slip on the central shaft;

ω: half of the maximum angle of led chip emission light;

Half of the maximum angle of optical mirror slip reverberation type;

N _d: refractive index;

v _d: Abbe number;

α: the luminous flux of the light of led chip emission; And

β: as the luminous flux of the relative unlimited distance light of side.

Embodiment

For making the utility model clear and definite more full and accurate, now enumerate preferred embodiment and cooperate following graphicly, details are as follows with structure of the present utility model and technical characterictic:

With reference to shown in Figure 2, Fig. 2 is according to aspherical positive irradiation-angle optical lens of the present utility model and the structural representation of light-emitting diode component in LED assembly 10 that constituted thereof.In Fig. 2, along central shaft Z by light source to being led chip 11, sealing 12 and optical mirror slip 13 as putting in order of side.After light is sent by led chip 11, after sealing 12, by optical mirror slip 13 with light-ray condensing and forming have be symmetrical in central shaft Z greater than 72 ° and less than 108 ° just according to the light beam of angle circular light type, this light beam is to shining as side.Optical mirror slip 13 is for having concave surface and convex surface and eyeglass that made by optical material, and its concave surface is the light source-side optical face R towards light source ₁, its convex surface is the picture side optical surface R towards the picture side ₂, and at least one the optical surface in concave surface and the convex surface is an 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 the 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 (5).

With reference to shown in Figure 4, Fig. 4 is the schematic diagram according to the LED assembly of use planoconvex optical mirror slip of the present utility model.In Fig. 4, along central shaft Z by light source to being led chip 11, sealing 12 and planoconvex optical mirror slip 14 as putting in order of side.After light is sent by led chip 11, after sealing 12, by optical mirror slip 14 with light-ray condensing and forming have be symmetrical in central shaft Z greater than 72 ° and less than 108 ° just according to the light beam of angle circular light type, this light beam is to shining as side.The eyeglass of optical mirror slip 14 for being made by optical material, its plane is the light source-side optical face R towards light source ₁, its convex surface is the picture side optical surface R towards the picture side ₂, optical surface R ₂Be aspheric surface.The optical surface R of optical mirror slip 14 ₁And R ₂And satisfy the condition of formula (3) and formula (4) between the 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 (5).

See also Fig. 2 and Fig. 4, if the optical surface R of optical mirror slip 13 ₁With R ₂Or the optical surface R of optical mirror slip 14 ₂Be made of the aspherics face, then its aspheric equation (Aspherical SurfaceFormula) is formula (7)

$Z=\frac{{\mathrm{<figure-callout\; id="2"\; label="ch"\; filenames="Y200820131021E00321.png,Y200820131021E00331.png"\; state="\{\{state\}\}">ch</figure-callout>}}^2}{1+\sqrt{(1-(1+K)c^2{h}^2)}}+A_4{\mathrm{<figure-callout\; id="4"\; label="h"\; filenames="Y200820131021E00351.png,Y200820131021E00381.png"\; state="\{\{state\}\}">h</figure-callout>}}^4+A_6{\mathrm{<figure-callout\; id="6"\; label="h"\; filenames="Y200820131021E00331.png"\; state="\{\{state\}\}">h</figure-callout>}}^6+A_8{h}^8+A_{10}{h}^{10}---\left(7\right)$

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 ₁₀Be respectively the asphericity coefficient (Nth Order AsphericalCoefficient) on four, six, eight, ten rank.

See also Fig. 3, Fig. 3 is the light path schematic diagram according to the LED assembly of LED optical mirror slip of the present utility model.In Fig. 3, led chip 11 emission light, and the maximum angle of this light is 2 ω (with central shaft Z symmetries), this light assemble via optical mirror slip 13 and the refraction back with Angle (with central shaft Z symmetry) forms needed smooth type and satisfies the requirement of beta/alpha 〉=85%, wherein, α is the luminous flux of the light of led chip emission, β is the luminous flux of the picture relative unlimited distance of side (100 times of fs) light, and ignores the refraction (refraction) and scattering effects such as (scattering) of air.Moreover this optical mirror slip 13 can be made by optical glass or by optical plastic.

With reference to shown in Figure 5, Fig. 5 is the light path schematic diagram according to use planoconvex aspherical positive irradiation-angle optical lens of the present utility model and the light-emitting diode component that constituted thereof.Led chip 11 emission light, and the maximum angle of this light is 2 ω (with central shaft Z symmetries), this light assemble via optical mirror slip 14 and the refraction back with Angle (with central shaft Z symmetry) forms needed smooth type and satisfies, the requirement of beta/alpha 〉=85%, wherein, α is the luminous flux of the light of led chip reflection, β is the luminous flux of the picture relative unlimited distance of side (100 times of fs) light, and ignores the refraction (refraction) and scattering effects such as (scattering) of air.Moreover this optical mirror slip 14 can be made by optical glass or by optical plastic.

According to said structure, sphere of the present utility model just according to angle light emitting diode (LED) light eyeglass and the light-emitting diode component that constituted thereof can meet greater than 72 ° and less than 108 ° just according to angle circular light type, make LED assembly 10 can launch predetermined light type, and meet of the requirement of luminous flux ratio, can single use or form array with the type of not sharing the same light and use greater than 85% (beta/alpha 〉=85%).

In embodiment for explanation practical application of the present utility model, use chip, the optical mirror slip 13 (or optical mirror slip 14) of 1.0x1.0mm size to use diameter 5mm to describe as example with led chip 11, thereby help the application scenarios of each embodiment of comparison as eyeglass.Yet the diameter of led chip 11 sizes and optical mirror slip 13 (or optical mirror slip 14) is not limited to above-mentioned size.

Below, first embodiment to the, four embodiment are to use the light-emitting diode component that optical mirror slip constituted with concave surface and convex surface, and the 5th embodiment to the eight embodiment are to use the light-emitting diode component that optical mirror slip constituted of planoconvex.

＜the first embodiment 〉

As Fig. 2 and shown in Figure 6, Fig. 2 and Fig. 6 are respectively according to the LED assembly schematic diagram of use LED optical mirror slip of the present utility model and according to the light intensity distributions of first embodiment and the polar coordinates graph of a relation at photograph angle.

Below table () in show respectively by the light source-side optical face R of light source side to the picture side along the led chip 11 of central shaft Z, sealing 12, optical mirror slip 13 ₁With picture side optical surface R ₂Radius of curvature R (unit: mm) (unit: mm) (the on-axis surfacespacing), the maximum angle of the light of led chip 11 emission are the maximum angle of the light light type launched of 2 ω (degree), optical mirror slip 13 for (the radius of curvature R), spacing d (degree), each refractive index (N _d), each thickness, each Abbe number (Abbe ' snumber) v _d

Table (one)

^*Aspheric surface

In table (), optical surface (Surf) has mark * person to be the aspherics face.Following tabulation (two) is every coefficient of the aspheric surface formula (7) of each optical surface:

Table (two)

In the present embodiment, sealing 12 is to utilize refractive index N _D1Be 1.527, Abbe number v _D1Transparent optical silica gel by 34 is clogged; Optical mirror slip 13 is to utilize refractive index N _D2Be 1.583, Abbe number v _D2Be that 61.7 glass material is made.By the refraction coefficient and the Abbe number of collocation sealing 12 and optical mirror slip 13, form the light refraction angle.Led chip 11 is launched the blue light of α=12.15 lumens, and the effective maximum angle of this blue light is 130 °.The length fs of the effective focal length of optical mirror slip 13 is 4.20mm, after above-mentioned blue light is assembled via this optical mirror slip 13, is being 11.092 lumens (ignoring effects such as the refraction of air and scattering) according to the angle in the β of unlimited distance (calculating with 100 times of fs) just with 92 °.Formula (1), (2), (3), (5), (6) and beta/alpha value are respectively:

$\begin{array}{cc}\left|\frac{R_1-R_2}{R_1+{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="Y200820131021E00321.png,Y200820131021E00331.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}\right|=& 0.9337\end{array}$

$\begin{array}{cc}\frac{{R_1}^2}{3\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="Y200820131021E00321.png,Y200820131021E00331.png"\; state="\{\{state\}\}">d</figure-callout>}}_2\&CenterDot;f_s}=& 169.0802\end{array}$

$\begin{array}{cc}(N_{d2}-1)\frac{d_2}{f_s}=& 0.3192\end{array}$

$\begin{array}{cc}{f}_g=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;f_s|=& 1.750\end{array}$

β/α＝ 91.29％

Can satisfy the condition of formula (1), (2), (3) and formula (5).The light that Fig. 3 launches for led chip 11 is through the schematic diagram of the index path of sealing 12 and eyeglass 13, and Fig. 6 is the LED assembly light intensity distributions and the polar coordinates graph of a relation that shines the angle according to first embodiment.By above-mentioned table (), table (two) and shown in Figure 6, provable by this aspherical positive irradiation-angle optical lens of the present utility model and the light-emitting diode component that is constituted thereof have simple face shape, be easy to make and have predetermined light type, the luminous intensity homogeneous of its each angle can promote application of the present utility model.

＜the second embodiment 〉

Please refer to Fig. 2 and shown in Figure 7, Fig. 2 and Fig. 7 are respectively according to the schematic diagram of the LED assembly of use LED optical mirror slip of the present utility model and according to the light intensity distributions of second embodiment and the polar coordinates graph of a relation at photograph angle.

Show respectively in the following table (three) by each optical surface radius of curvature R, the spacing d of light source side to the picture side along central shaft Z, the maximum angle of the light of led chip 11 emissions is the maximum angle of the light light type of 2 ω, optical mirror slip 13 emissions , each refractive index (N _d), each Abbe number v _dTable (four) is every coefficient of the aspheric surface formula (7) of each optical surface.

Table (three)

^*Aspheric surface

Table (four)

In the present embodiment, sealing 12 is to utilize refractive index N _D1Be 1.527, Abbe number v _D1Transparent optical silica gel by 34 is clogged; Optical mirror slip 13 is to utilize refractive index N _D2Be 1.583, Abbe number v _D2Be that 61.7 glass material is made.The blue light of led chip 11 emission α=12.15 lumens, the effective maximum angle of this blue light is 130 °, the length fs of the effective focal length of optical mirror slip 13 is 5.66mm; Above-mentioned blue light is being 11.57 lumens (ignoring effects such as the refraction of air and scattering) according to the angle in the β of unlimited distance (calculating with 100 times of fs) just with 92 ° after optical mirror slip thus 13 is assembled.Formula (1), (2), (3), (5), (6) and beta/alpha value are respectively:

$\begin{array}{cc}\left|\frac{R_1-R_2}{R_1+{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="Y200820131021E00321.png,Y200820131021E00331.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}\right|=& 0.7410\end{array}$

$\begin{array}{cc}\frac{{R_1}^2}{3\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="Y200820131021E00321.png,Y200820131021E00331.png"\; state="\{\{state\}\}">d</figure-callout>}}_2\&CenterDot;f_s}=& 9.0579\end{array}$

$\begin{array}{cc}(N_{d2}-1)\frac{d_2}{f_s}=& 0.2676\end{array}$

$\begin{array}{cc}{f}_g=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;f_s|=& 1.9031\end{array}$

β/α＝ 95.22％

Can satisfy the condition of formula (1), (2), (3) and formula (5), Fig. 7 is the LED assembly light intensity distributions and the polar coordinates graph of a relation that shines the angle according to second embodiment.By above-mentioned table (three), table (four) and shown in Figure 7, provable by this aspherical positive irradiation-angle optical lens of the present utility model and the light-emitting diode component that is constituted thereof have simple face shape, be easy to make and have predetermined light type, the luminous intensity homogeneous of its each angle can promote application of the present utility model.

＜the three embodiment 〉

Please refer to Fig. 2 and shown in Figure 8, Fig. 2 and Fig. 8 are respectively according to the schematic diagram of the LED assembly of use LED optical mirror slip of the present utility model and according to the light intensity distributions of the 3rd embodiment and the polar coordinates graph of a relation at photograph angle.

Show respectively in the following table (five) by each optical surface radius of curvature R, the spacing d of light source side to the picture side along central shaft Z, the maximum angle of the light of led chip 11 emissions is the maximum angle of the light light type of 2 ω, optical mirror slip 13 emissions , each refractive index (N _d), each thickness (thickness), each Abbe number v _dTable (six) is every coefficient of the aspheric surface formula (7) of each optical surface.

Table (five)

^*Aspheric surface

Table (six)

In the present embodiment, sealing 12 is to utilize refractive index N _D1Be 1.527, Abbe number v _D1Transparent optical silica gel by 34 is clogged; Optical mirror slip 13 is to utilize refractive index N _D2Be 1.583, Abbe number v _D2Be that 61.7 glass material is made.The blue light of led chip 11 emission α=12.15 lumens, the effective maximum angle of this blue light is 110 °.The length fs of the effective focal length of optical mirror slip 13 is 4.20mm, and above-mentioned blue light is being 11.277 lumens (ignoring effects such as the refraction of air and scattering) according to the angle in the β of unlimited distance (calculating with 100 times of fs) just with 91 ° after optical mirror slip thus 13 is assembled.Formula (1), (2), (3), (5), (6) and beta/alpha value are respectively:

$\begin{array}{cc}\left|\frac{R_1-R_2}{R_1+{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="Y200820131021E00321.png,Y200820131021E00331.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}\right|=& 0.9337\end{array}$

$\begin{array}{cc}\frac{{R_1}^2}{3\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="Y200820131021E00321.png,Y200820131021E00331.png"\; state="\{\{state\}\}">d</figure-callout>}}_2\&CenterDot;f_s}=& 169.0802\end{array}$

$\begin{array}{cc}(N_{d2}-1)\frac{d_2}{f_s}=& 0.3191\end{array}$

$\begin{array}{cc}{f}_g=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;f_s|=& 1.7501\end{array}$

β/α＝ 91.82％

Can satisfy the condition of formula (1), (2), (3) and formula (5), Fig. 8 is the LED assembly light intensity distributions and the polar coordinates graph of a relation that shines the angle according to the 3rd embodiment of the present utility model.By above-mentioned table (five), table (six) and shown in Figure 8, provable by this aspherical positive irradiation-angle optical lens of the present utility model has simple face shape, is easy to make and have predetermined light type, and the luminous intensity homogeneous of its each angle can promote application of the present utility model.

＜the four embodiment 〉

Please refer to Fig. 2 and shown in Figure 9, Fig. 2 and Fig. 9 are respectively according to the schematic diagram of the LED assembly of use LED optical mirror slip of the present utility model and according to the light intensity distributions of the 4th embodiment and the polar coordinates graph of a relation at photograph angle.

Show respectively in the following table (seven) by each optical surface radius of curvature R, the spacing d of light source side to the picture side along central shaft Z, the maximum angle of the light of led chip 11 emissions is the maximum angle of the light light type of 2 ω, optical mirror slip 13 emissions , each refractive index (N _d), each thickness, each Abbe number v _dTable (eight) is every coefficient of the aspheric surface formula (7) of each optical surface.

Table (seven)

^*Aspheric surface

Table (eight)

	K	A 4	A 6	A 8	A 10
						*R 2	6.0000E-01	7.0000E-03	-2.8000E-03	1.3700E-03	-4.7870E-06

In the present embodiment, sealing 12 is to utilize refractive index N _D1Be 1.527, Abbe number v _D1Transparent optical silica gel by 34 is clogged; Optical mirror slip 13 is to utilize refractive index N _D2Be 1.530, Abbe number v _D2Be that 57 plastic material is made.The blue light of led chip 11 emission α=12.15 lumens, the effective maximum angle of this blue light is 120 °.The length fs of the effective focal length of optical mirror slip 13 is 4.30mm, and above-mentioned blue light is being 11.741 lumens (ignoring effects such as the refraction of air and scattering) according to the angle in the β of unlimited distance (calculating with 100 times of fs) just with 92 ° after optical mirror slip thus 13 is assembled.Formula (1), (2), (3), (5), (6) and beta/alpha value are respectively:

$\begin{array}{cc}\left|\frac{R_1-R_2}{R_1+{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="Y200820131021E00321.png,Y200820131021E00331.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}\right|=& 0.8801\end{array}$

$\begin{array}{cc}\frac{{R_1}^2}{3\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="Y200820131021E00321.png,Y200820131021E00331.png"\; state="\{\{state\}\}">d</figure-callout>}}_2\&CenterDot;f_s}=& 59.3053\end{array}$

$\begin{array}{cc}(N_{d2}-1)\frac{d_2}{f_s}=& 0.2278\end{array}$

$\begin{array}{cc}{f}_g=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;f_s|=& 1.7931\end{array}$

β/α＝ 96.63％

Can satisfy the condition of formula (1), (2), (3) and formula (5), Fig. 9 is the light intensity distributions and the polar coordinates graph of a relation that shines the angle according to the LED assembly of the utility model the 4th embodiment.By above-mentioned table (seven), table (eight) and shown in Figure 9, provable by this aspherical positive irradiation-angle optical lens of the present utility model and the light-emitting diode component that is constituted thereof have simple face shape, be easy to make and have predetermined light type, the luminous intensity homogeneous of its each angle can promote application of the present utility model.

＜the five embodiment 〉

Please refer to Fig. 4 and shown in Figure 10, Fig. 4 and Figure 10 be respectively use planoconvex LED optical mirror slip of the present utility model the LED assembly the light path schematic diagram and according to the light intensity distributions of the 5th embodiment and polar coordinates graph of a relation according to the angle.

Below table (nine) in show respectively by the light source-side optical face R of light source side to the picture side along the led chip 11 of central shaft Z, sealing 12, optical mirror slip 14 ₁With picture side optical surface R ₂Radius of curvature R (unit: mm), (unit: mm), the maximum angle of the light of led chip 11 emission is the maximum angle of the light light type of 2 ω (degree deg), optical mirror slip 14 emissions to spacing d

(degree), each refractive index (N _d), each thickness (thickness), each Abbe number v _dTable (ten) is every coefficient of the aspheric surface formula (7) of each optical surface.

Table (nine)

^*Aspheric surface

In table (nine), optical surface (Surf) has mark * person to be the aspherics face.

Table (ten)

In the present embodiment, sealing 12 is to utilize refractive index N _D1Be 1.527, Abbe number v _D1Transparent optical silica gel by 34 is clogged; Optical mirror slip 14 is to utilize refractive index N _D2Be 1.583, Abbe number v _D2Be that 61.7 glass material is made.By the refraction coefficient and the Abbe number of collocation sealing 12 and optical mirror slip 14, form the light refraction angle.The blue light of led chip 11 emission α=12.15 lumens, the effective maximum angle of this blue light is 120 °.The length fs of the effective focal length of optical mirror slip 14 is 5.091mm, and above-mentioned blue light is being 11.668 lumens (ignoring effects such as the refraction of air and scattering) according to the angle in the β of unlimited distance (calculating with 100 times of fs) just with 90 ° after optical mirror slip thus 14 is assembled.Formula (3), (4), (5), (6) and beta/alpha value are respectively:

$\begin{array}{cc}(N_{d2}-1)\frac{d_2}{f_s}=& 1.7112\end{array}$

$\begin{array}{cc}\frac{({\mathrm{<figure-callout\; id="0"\; label="d"\; filenames="Y200820131021E00341.png,Y200820131021E00351.png"\; state="\{\{state\}\}">d</figure-callout>}}_0+d_1+d_2)}{{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="Y200820131021E00321.png,Y200820131021E00331.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}=& 1.0852\end{array}$

$\begin{array}{cc}{f}_g=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;f_s|=& 1.7112\end{array}$

β/α＝ 96.03％

Can satisfy the condition of formula (3), (4) and formula (5).Figure 10 is light intensity distributions and the polar coordinates graph of a relation that shines the angle.By above-mentioned table (nine), table (ten) and shown in Figure 10, provable by this aspherical positive irradiation-angle optical lens of the present utility model and the light-emitting diode component that is constituted thereof have simple face shape, be easy to make and have predetermined light type, the luminous intensity homogeneous of its each angle can promote application of the present utility model.

＜the six embodiment 〉

Please refer to Fig. 4 and shown in Figure 11, Fig. 4 and Figure 11 are respectively according to the schematic diagram of the LED assembly of use planoconvex optical mirror slip of the present utility model and according to the light intensity distributions of the 6th embodiment and the polar coordinates graph of a relation at photograph angle.

Below table (11) in show respectively by the light source-side optical face R of light source side to the picture side along the led chip 11 of central shaft Z, sealing 12, optical mirror slip 14 ₁With picture side optical surface R ₂Radius of curvature R, spacing d, the maximum angle of the light of led chip 11 emission is the maximum angle of the light light type of 2 ω, optical mirror slip 14 emissions , each refractive index (N _d), each Abbe number v _dTable (12) is every coefficient of the aspheric surface formula (7) of each optical surface:

Table (11)

^*Aspheric surface

Table (12)

In the present embodiment, sealing 12 is to utilize refractive index N _D1Be 1.527, Abbe number v _D1Transparent optical silica gel by 34 is clogged; Optical mirror slip 14 is to utilize refractive index N _D2Be 1.583, Abbe number v _D2Be that 61.7 glass material is made.By the refraction coefficient and the Abbe number of collocation sealing 12 and optical mirror slip 14, form the light refraction angle.The white light of led chip 11 emission α=78.5 lumens, the effective maximum angle of this white light are 120 °, and the length fs of the effective focal length of optical mirror slip 14 is 5.091mm.Above-mentioned white light is being 74.5 lumens (ignoring effects such as the refraction of air and scattering) according to the angle in the β of unlimited distance (calculating with 100 times of fs) just with 90 ° after optical mirror slip thus 14 is assembled.Formula (3), (4), (5), (6) and beta/alpha value are respectively:

$\begin{array}{cc}(N_{d2}-1)\frac{d_2}{f_s}=& 0.3205\end{array}$

$\begin{array}{cc}\frac{({\mathrm{<figure-callout\; id="0"\; label="d"\; filenames="Y200820131021E00341.png,Y200820131021E00351.png"\; state="\{\{state\}\}">d</figure-callout>}}_0+d_1+d_2)}{{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="Y200820131021E00321.png,Y200820131021E00331.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}=& 1.0857\end{array}$

$\begin{array}{cc}{f}_g=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;f_s|=& 1.7111\end{array}$

β/α＝ 94.92％

Can satisfy the condition of formula (3), (4) and formula (5).Figure 11 is the light intensity distributions and the polar coordinates graph of a relation that shines the angle according to the LED assembly of the utility model the 6th embodiment.By above-mentioned table (11), table (12) and shown in Figure 11, provable by this aspherical positive irradiation-angle optical lens of the present utility model and the light-emitting diode component that is constituted thereof have simple face shape, be easy to make and have predetermined light type, the luminous intensity homogeneous of its each angle can promote application of the present utility model.

＜the seven embodiment 〉

Please refer to Fig. 4 and shown in Figure 12, Fig. 4 and Figure 12 are respectively according to the schematic diagram of the LED assembly of use planoconvex LED optical mirror slip of the present utility model and according to the light intensity distributions of the 7th embodiment and the polar coordinates graph of a relation at photograph angle.

Below table (13) in show respectively by the light source-side optical face R of light source side to the picture side along the led chip 11 of central shaft Z, sealing 12, optical mirror slip 14 ₁With picture side optical surface R ₂Radius of curvature R, spacing d, the maximum angle of the light of led chip 11 emission is the maximum angle of the light light type of 2 ω, optical mirror slip 14 emissions , each refractive index (N _d), each thickness, each Abbe number v _dTable (14) is every coefficient of the aspheric surface formula (7) of each optical surface:

Table (13)

^*Aspheric surface

Table (14)

In the present embodiment, sealing 12 is to utilize refractive index N _D1Be 1.527, Abbe number v _D1Transparent optical silica gel by 34 is clogged; Optical mirror slip 14 is to utilize refractive index N _D2Be 1.530, Abbe number v _D2Be that 57 plastic material is made.By the refraction coefficient and the Abbe number of collocation sealing 12 and optical mirror slip 14, form the light refraction angle.The blue light of led chip 11 emission α=12.15 lumens, the effective maximum angle of this blue light is 120 °.The length fs of the effective focal length of optical mirror slip 14 is 5.091mm, and above-mentioned blue light is being 11.74 lumens (ignoring effects such as the refraction of air and scattering) according to the angle in the β of unlimited distance (calculating with 100 times of fs) just with 90 ° after optical mirror slip thus 14 is assembled.Formula (3), (4), (5), (6) and beta/alpha value are respectively:

$\begin{array}{cc}(N_{d2}-1)\frac{d_2}{f_s}=& 0.2707\end{array}$

$\begin{array}{cc}\frac{({\mathrm{<figure-callout\; id="0"\; label="d"\; filenames="Y200820131021E00341.png,Y200820131021E00351.png"\; state="\{\{state\}\}">d</figure-callout>}}_0+d_1+d_2)}{{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="Y200820131021E00321.png,Y200820131021E00331.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}=& 1.0521\end{array}$

$\begin{array}{cc}{f}_g=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;f_s|=& 1.7111\end{array}$

β/α＝ 96.90％

The formula that can satisfy condition (3), (4) and formula (5).Figure 12 is the light intensity distributions and the polar coordinates graph of a relation that shines the angle according to the LED assembly of the utility model the 7th embodiment.By above-mentioned table (13), table (14) and shown in Figure 12, provable by this aspherical positive irradiation-angle optical lens of the present utility model and the light-emitting diode component that is constituted thereof have simple face shape, be easy to make and have predetermined light type, the luminous intensity homogeneous of its each angle can promote application of the present utility model.

＜the eight embodiment 〉

Please refer to Fig. 4 and shown in Figure 13, Fig. 4 and Figure 13 are respectively according to the schematic diagram of the LED assembly of use planoconvex LED optical mirror slip of the present utility model and according to the light intensity distributions of the 8th embodiment and the polar coordinates graph of a relation at photograph angle.

Below table (15) in show respectively by the light source-side optical face R of light source side to the picture side along the led chip 11 of central shaft Z, sealing 12, optical mirror slip 14 ₁With picture side optical surface R ₂Radius of curvature R, spacing d, the maximum angle of the light of led chip 11 emission is the maximum angle of the light light type of 2 ω, optical mirror slip 14 emissions

Each refractive index (N _d), each Abbe number v _dTable (16) is every coefficient of the aspheric surface formula (7) of each optical surface:

Table (15)

^*Aspheric surface

Table (16)

In the present embodiment, sealing 12 is to utilize refractive index N _D1Be 1.527, Abbe number v _D1Transparent optical silica gel by 34 is clogged; Optical mirror slip 14 is to utilize refractive index N _D2Be 1.583, Abbe number v _D2Be that 61.7 glass material is made.By the refraction coefficient and the Abbe number of collocation sealing 12 and optical mirror slip 14, form the light refraction angle.The blue light of led chip 11 emission α=12.15 lumens, the effective maximum angle of this blue light is 130 °.The length fs of the effective focal length of optical mirror slip 14 is 5.091mm, and above-mentioned blue light is being 11.51 lumens (ignoring effects such as the refraction of air and scattering) according to the angle in the β of unlimited distance (calculating with 100 times of fs) just with 92 ° after optical mirror slip thus 14 is assembled.Formula (3), (4), (5), (6) and beta/alpha value are respectively:

$\begin{array}{cc}(N_{d2}-1)\frac{d_2}{f_s}=& 0.2976\end{array}$

$\begin{array}{cc}\frac{({\mathrm{<figure-callout\; id="0"\; label="d"\; filenames="Y200820131021E00341.png,Y200820131021E00351.png"\; state="\{\{state\}\}">d</figure-callout>}}_0+d_1+d_2)}{{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="Y200820131021E00321.png,Y200820131021E00331.png"\; state="\{\{state\}\}">R</figure-callout>}}_2}=& 1.0521\end{array}$

$\begin{array}{cc}{f}_g=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;f_s|=& 1.7112\end{array}$

β/α＝ 94.70％

Can satisfy the condition of formula (3), (4) and formula (5).Figure 13 is the light intensity distributions and the polar coordinates graph of a relation that shines the angle according to the LED assembly of the utility model the 8th embodiment.By above-mentioned table (15), table (16) and shown in Figure 12, provable by this aspherical positive irradiation-angle optical lens of the present utility model and the light-emitting diode component that is constituted thereof have simple face shape, be easy to make and have predetermined light type, the luminous intensity homogeneous of its each angle can promote application of the present utility model.

Conclude above-mentioned, the effect of aspherical positive irradiation-angle optical lens of the present utility model and the light-emitting diode component that constituted thereof is that it has simple face shape, can utilize technology institutes such as plastics injection molding or moulded glass to manufacture in a large number and be not easy and be out of shape, thereby can reduce production costs.Wherein, optical mirror slip also can use planoconvex aspherics eyeglass to simplify manufacturing process.

Another effect of aspherical positive irradiation-angle optical lens of the present utility model and the light-emitting diode component that constituted thereof is to make the light source that throws from led chip can have predetermined light type, and applicable to illumination.

The another effect of aspherical positive irradiation-angle optical lens of the present utility model and the light-emitting diode component that constituted thereof is that it makes the light source that throws from led chip all can keep uniform 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 embodiment of the present utility model, only be illustrative for the utility model, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes, modification even equivalence change to it in the spirit and scope that claim of the present utility model limited, but all will fall in the interest field of the present utility model.

Claims (10)

1, a kind of aspherical positive irradiation-angle optical lens, it is applied in the light-emitting diode component, extremely is arranged with light-emitting diode chip for backlight unit, sealing and optical mirror slip as side along central shaft by light source side, it is characterized in that:

This optical mirror slip is the eyeglass of being made by the glass optical material with concave surface and convex surface, and this concave surface is the light source-side optical face towards light source, and this convex surface is that wherein at least one optical surface is an aspheric surface, and meets the following conditions towards the picture side optical surface of picture side:

$0.7\&le;\left|\frac{R_1-R_2}{R_1+R_2}\right|\&le;1.0$

Wherein, R ₁Be the radius of curvature of this optical mirror slip light source-side optical face, R ₂Be the radius of curvature of this optical mirror slip as the side optical surface.

2, aspherical positive irradiation-angle optical lens as claimed in claim 1 is characterized in that: this optical mirror slip further meets the following conditions:

$8\&le;\frac{{R_1}^2}{3\&CenterDot;d_2\&CenterDot;f_s}\&le;180$

Wherein, fs is the length of the effective focal length of this optical mirror slip, R ₁Be the radius of curvature of this optical mirror slip light source-side optical face, d ₂Thickness for this optical mirror slip on the central shaft.

3, aspherical positive irradiation-angle optical lens as claimed in claim 1 is characterized in that: this optical mirror slip further meets the following conditions:

$0.2\&le;(N_{d2}-1)\frac{d_2}{f_s}\&le;0.4$

Wherein, fs is the length of the effective focal length of this optical mirror slip, d ₂Be the thickness of this optical mirror slip on the central shaft, N _D2Refractive index for this optical mirror slip.

4, aspherical positive irradiation-angle optical lens as claimed in claim 2 is characterized in that: this optical mirror slip further meets the following conditions:

$0.2\&le;(N_{d2}-1)\frac{d_2}{f_s}\&le;0.4$

Wherein, fs is the length of the effective focal length of this optical mirror slip, d ₂Be the thickness of this optical mirror slip on the central shaft, N _D2Refractive index for this optical mirror slip.

5, aspherical positive irradiation-angle optical lens as claimed in claim 1 is characterized in that: this optical mirror slip is made by plastic material.

6, a kind of aspherical positive irradiation-angle optical lens, it is applied in the light-emitting diode component, extremely is arranged with light-emitting diode chip for backlight unit, sealing and optical mirror slip as side along central shaft by light source side, it is characterized in that:

This optical mirror slip is the eyeglass of being made by the glass optical material with plane and convex surface, and this plane is the light source-side optical face towards light source, and this convex surface is that this is an aspheric surface as the side optical surface, and meets the following conditions towards the picture side optical surface of picture side:

$0.5\&le;\frac{(d_0+d_1+d_2)}{R_2}<1.2$

Wherein, R ₁Be the radius of curvature of this optical mirror slip light source-side optical face, R ₂Be the radius of curvature of this optical mirror slip as the side optical surface, R ₂Be the radius of curvature of picture side optical surface, d ₀Be the thickness of led chip on the central shaft, d ₁For led chip surface on the central shaft to optical mirror slip light source-side optical identity distance from, d ₂Thickness for the central shaft optical mirror slip.

7, aspherical positive irradiation-angle optical lens as claimed in claim 6 is characterized in that: this optical mirror slip is made by plastic material.

8, a kind of light-emitting diode component, it comprises as claim 1 each described aspherical positive irradiation-angle optical lens and light-emitting diode chip for backlight unit to the claim 7, it is characterized in that: this light-emitting diode component have greater than 72 ° and less than 108 ° just according to angle circular light type, and meet the following conditions:

Wherein,

$f_g=|(\frac{1}{R_1}-\frac{1}{R_2})\&CenterDot;f_s|$

Wherein, fg is the length of the relative focal length of this optical mirror slip, and fs is the length of the effective focal length of this optical mirror slip, R ₁Be the radius of curvature of this optical mirror slip light source-side optical face, R ₂Be the radius of curvature of this optical mirror slip as the side optical surface, ω is half with the axisymmetric maximum angle in center of the light of this light-emitting diode chip for backlight unit emission

Be the light that penetrates via this optical mirror slip half with the axisymmetric maximum angle in center.

9, light-emitting diode component as claimed in claim 8 is characterized in that: the luminous flux of the light that this light-emitting diode chip for backlight unit sends meets the following conditions with ratio as the luminous flux of the relative unlimited distance of side:

β/α≥85％

Wherein, α is the luminous flux of the light of this light-emitting diode chip for backlight unit emission, and β is the luminous flux as effects such as the refraction of ignoring air of the relative unlimited distance of side and scatterings of this light-emitting diode component.

10, light-emitting diode component as claimed in claim 8 is characterized in that: this aspherical positive irradiation-angle optical lens is made by plastic material.

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