JP3146186U - Optical lens of aspherical wide illumination angle light emitting diode and light emitting diode component constituting the same - Google Patents

Abstract

Kind Code: A1 An optical lens of a kind of aspherical wide illumination angle light emitting diode and a light emitting diode component constituting the same are provided.
A light emitting diode (LED) component 10 is configured such that a concave surface of an optical lens 13 is provided on the light source side and a convex surface is provided on the image side, and the LED die radiation light source 11 is condensed, A circular light dispersion pattern having an irradiation angle from 120 ° to 180 ° is formed. As a result, the light source of the LED can be condensed into a predetermined light dispersion pattern with a simple optical lens 13, and the light intensity proportional value exceeds 85%, and it can be used as a flashlight for lighting, mobile phones or cameras. Can be applied.
[Selection] Figure 2

Description

  The present invention can be applied to an optical lens of a kind of aspherical wide illumination angle light emitting diode and a light emitting diode constituting material thereof, in particular, an optical lens in which a light dispersion pattern is generated by a kind of LED light source, and further, the light emission composed thereof. The diode component can be applied to LED lighting, mobile phone or camera flashlight.

  LEDs, which are light-emitting diodes, have advantages such as low voltage, low power consumption, and long life, so they are already used in large quantities in fields such as indicators and illuminators. Since LEDs have the advantages of simple light color, small size, and flat mounting, they are used in flashlights for mobile phones and cameras. However, since the light source emitted from the LED die is a point light source, it has a characteristic of luminance imbalance. Many research scholars are already engaged in the aggregation of light sources. The adoption of optical lenses has become an important development goal, such as miniaturization of dies and improvement of luminous efficiency.

  The LED optical lens design is mainly divided into a primary optical lens and a secondary optical lens. The primary optical lens has a lens mounted directly on an LED die, and is usually intended mainly for concentration. As the secondary optical lens, one or several LED arrays are used, and the main purpose is light source dispersion. Regarding primary optical lenses of known technology, in Patent Document 1, a symmetric aspheric lens, in Patent Document 2, Patent Document 3, Patent Document 4, Patent Document 5, Patent Document 6, etc., a spherical lens, and in Patent Document 7, a bulk LED A spherical lens is used for it.

  For advanced operation, the primary optical lens generates a special light dispersion pattern such as wide angle, small angle, circle, ellipse, etc. in addition to the light collecting function, and optimal optical effects when used in combination with LED arrays To generate a specific distribution pattern at a uniform peak intensity. As shown in FIG. 1, the application of the primary optical lens includes a lens 23 covered on the LED die 21, and a silicon gel is filled between the lens 23 and the LED die 21. The LED die 21 may be a die that emits blue light. Yellow phosphors are contained inside the silicon 22, a blue light source is emitted from the LED die 21, wavelength conversion is performed by the phosphor inside the silicon 22, and the light is converted into white light. After being condensed at 23, the light source is emitted.

  The primary optical lens is known as Patent Document 8, Patent Document 9, Patent Document 10, Patent Document 11, Patent Document 12, and Patent Document 13, Patent Document 14, Patent Document 15, Patent Document 16, Patent Document 17, Patent Literature 18, Patent Literature 19, Patent Literature 20, Patent Literature 21 and the like are light dispersion patterns by optical lenses, Patent Literature 22 and Patent Literature 23 are elliptical light dispersion patterns, and Patent Literature 24 is rectangular, square or elongated at 160 degrees or less. It is disclosed that each light dispersion pattern having a shape is generated.

ES2157829 publication Japanese Patent No. 3030669 JP 2002-111068 A JP 2005-203499 A US2006 / 187653 gazette CN101013193 JP 2002-221658 A JP 2004-356512 A JP 2005-229082 A JP 2006-072874 A JP 2007-140524 A JP 2007-115708 A US2005 / 162854 US2006 / 105485 gazette US2006 / 076568 US2007 / 114551 US2007 / 152231 US 7,344,902 gazette US7,345,416 gazette US7,352,011 publication TWM332927 Gazette JP-A-6-7425 WO2007 / 100837 CN2007101188965.0

  With the advancement of science and technology, electronic products are developing light, thin, small and multi-functional, especially digital products (Digital Still Camera), PC camera (PC camera), network camera (Network camera) mobile phone etc. The lens is becoming the basic equipment. In addition, demand for lens equipment for portable information terminals (PDAs) has begun to appear. Therefore, the LED flashlight or the lighting LED lamp used in this type of product has an array incorporated by one or a plurality of LED components. In addition, in order to meet the needs of portable convenience and ergonomics, and to adapt LED flashlights or LED lighting fixtures for lighting to a predetermined luminance, various light dispersion pattern LED components are combined, and small volume and low cost are required. Has been. Regarding the needs of LED primary optical lenses, it is difficult to manufacture optical lenses having complicated appearance designs or diffractive surfaces known in the art, and there are still defects such as deformation due to plastic injection molding and high cost. Therefore, the LED lens design and configuration with simple appearance and easy manufacture is a LED with a wide light irradiation angle circular light dispersion pattern from 120 ° to 180 ° of peak intensity by condensing the radiation source of LED. The component and the one with the proportional value of the luminous intensity of 85% are the most desired by the user.

It is a main object of the present invention to provide a kind of aspherical wide-angle light-emitting diode optical lens that can be applied to LED components. The LED component is emitted by a light source from a light emitting diode die (LED die), and the light source is condensed by an optical lens to form a wide light irradiation angle circular light dispersion pattern having a uniform light peak intensity of 120 ° to 180 °, A sealing material (seal gel) is filled between the optical lens and the light emitting diode. The optical lens is a lens that is finished from an optical member having a concave surface and a convex surface. The concave surface is disposed opposite to the light source to be an optical surface on the light source side, and the convex surface is disposed to face the image side to be an image side optical surface. . Among them, at least one optical surface is aspheric and the following conditions are met.

  It is another object of the present invention to provide the convenience of use selection, such as using optical glass or chemical plastic.

The aspherical wide illumination angle light emitting diode according to the present invention includes an optical lens and a light emitting diode die, and the light emitting diode component includes a wide illumination angle circular light dispersion pattern from 120 ° to 180 °, and is proportional to the luminous intensity. It is another object of the present invention to provide a kind of light-emitting diode component that meets the requirement of 85% (β / α ≧ 85%) or more and satisfies the following conditions.

  Therefore, the optical lens according to the present invention and the light-emitting diode component composed of the optical lens include a circular light dispersion pattern with a wide irradiation angle of 120 ° to 180 °, and the proportional value of the luminous intensity meets the requirement of 85% or more. In addition, since the optical lens has advantages such as a simple shape, a thin shape, and easy manufacture, the optical lens can be provided in a single LED or LED array and provided for illumination, a mobile phone, or a camera flashlight.

  In order to ensure the structure and technical features of the present invention, a preferred embodiment will be described in detail with reference to the following diagrams.

<Example 1>
FIG. 2 is a schematic view of an optical lens of a kind of aspherical wide-angle light emitting diode according to the present invention and an LED constituent material of the light emitting diode constituent material constituting the optical lens. The LED die 11, the sealing material 12, and the optical lens 13 are arranged in this order from the light source side to the video side along the central axis z. The light source is emitted from the LED die 11 and condensed by the optical lens 13 via the sealing material 12, and the luminous intensity of the wide irradiation angle circular light dispersion pattern balanced from 120 ° to 180 ° with respect to the central axis z is shown on the image side. To be emitted. The optical lens 13 is a lens made of an optical member having a concave surface and a concave surface. The concave surface is an optical surface R1 facing the light source side, and the convex surface is an optical surface R2 facing the image side. Among them, at least one optical surface is an aspherical surface. The optical surfaces R ₁ and R ₂ and the effective focal length of the optical lens 13 meet the conditions of the expressions (1), (2), and (3), and are formed from the radiation angle 2ω of the LED die 11 and the optical lens 13. The light dispersion pattern angle 2φ of the light intensity satisfies the condition of the formula (4).

  Of these, the use of the sealing material 12 is not limited. There are optical resin (resin), silicon gel (silicon gel), etc. as a regular member of LED constituent material.

When the optical surfaces R ₁ and R ₂ of the optical lens 13 are constituted by aspherical optical surfaces, the aspherical equation (Aspherical Surface Formula) is shown in Equation (6). In equation (6), c is the curvature, h is the lens height, K is the conic constant, A ₄ , A ₆ , A ₈ , and A ₁₀ are ₄ , ₈ , and ₁₀ gradation aspheric coefficients ( Nth Order Aspherical Coefficient).

FIG. 3 is a schematic view of the optical path of the present invention. The maximum angle of the LED die 11 radiation source is 2ω (balanced with the central axis z), and after being condensed and diffracted by the optical lens 13, the necessary light dispersion pattern and β at the 2φ angle (balanced with the central axis z) / Α ≧ 70% to meet the required conditions. Of these, α is the luminous intensity of the LED die radiation source, and β is the luminous intensity of the image side correlation infinite distance (100 times f _s ), and ignores air refraction and scattering effects. Further, the optical lens 13 is made of optical glass or optical plastics.

  With the above-described components, the optical lens of the aspherical wide illumination angle light emitting diode according to the present invention and the light emitting diode component constituting the same can meet the requirement of a wide illumination angle circular light dispersion pattern from 120 ° to 180 °, and the LED The component 10 emits a predetermined light dispersion pattern and can meet the requirement of a light intensity proportional value of 85% (β / α ≧ 85%), and can be used by being incorporated into an array with one or various light dispersion patterns. .

  As an application example of the present invention, the LED die 11 has a size of 1.0 × 1.0 mm and the optical lens 13 has a diameter of 5 mm. However, the dimensions of the LED die 11 and the diameter of the optical lens 13 are not limited to the dimensions described above.

  2 and 4 are a schematic view of attaching the optical lens of the present invention to an LED component, and a polar coordinate correlation diagram according to the light peak intensity and the irradiation angle of Example 1. FIG.

The following table (1) shows the radius of curvature R (unit: mm) of the light source side optical surface R1 and the image side optical surface R2 of the LED die 11, the sealing material 12, and the optical lens 13 along the central axis z from the light source side to the image side. (The radius of curvature R), spacing d (unit: mm) (the on-axis surface spacing), the maximum angle of the LED die 11 radiation source is 2ω (degrees, deg), the optical lens 13 the maximum light dispersion pattern of the radiation source An angle 2φ (degrees, deg), each diffraction index (N _d ), each Abbe's number v _d , and each thickness (thickness) are shown. In Table (1), an optical surface (Surf) with an asterisk (*) indicates an aspheric optical surface.

Table (2) below shows the aspherical surface of each optical surface and the coefficients of equation (6).

In this embodiment, the sealing material 12 is filled with transparent optical silica gel having a refractive index N _d1 of 1.527 and an Abbe number v _d1 of 34. The optical lens 13 uses a glass member having a refractive index N _d2 of 1.5828 and an Abbe number v _d2 of 61.7. The diffraction angle of the light source is formed by the combination of the diffraction coefficient of the sealing material 12 and the optical lens 13 and the Abbe number. A blue light source of α = 13.928 lumen is emitted from the LED die 11, the effective maximum angle is 80 °, and the effective focal length f _s of the optical lens 13 is −36.114 mm, which is collected from the optical lens 13. After that, β = 13.813 lumen (ignoring diffraction and scattering effects in the air) at an infinite distance (f _s is 100 times) at a wide irradiation angle of 160 °. Equations (1) to (5) are respectively

  Therefore, the conditional expressions (1) to (5) can be adapted. 3 is an optical path diagram through which the radiation source of the LED die 11 passes through the sealing material 12 and the optical lens 13, and FIG. 4 is a polar coordinate correlation diagram of the light peak intensity distribution and the irradiation angle. As shown in Table (1), Table (2), and FIG. 4, the aspherical wide-angle light-emitting diode optical lens according to the present invention has a simple surface shape and is easy to manufacture. It is proved that the applicability of the present invention can be improved because the light distribution pattern is emitted and the radiated light peak intensity distribution at each angle is uniform.

<Example 2>
FIGS. 2 and 5 are a schematic view of attaching the optical lens of the present invention to an LED component, and a polar coordinate correlation diagram according to the light peak intensity and the irradiation angle in Example 2. FIG.

The following table (3) shows the LED die 11, the seal material 12, and the radius of curvature R of the light source side optical surface R1 and the image side optical surface R2 of the optical lens 13 from the light source side to the image side. The maximum angle of the die 11 radiation light source is 2ω, the light dispersion pattern maximum angle 2φ of the optical lens 13 radiation light source, each diffraction index (N _d ), each Abbe number v _d , and each thickness (thickness). Table (4) below shows the aspherical surface of each optical surface and the coefficients of equation (6).

In this embodiment, the sealing material 12 is filled with transparent optical silica gel having a refractive index N _d1 of 1.527 and an Abbe number v _d1 of 34. The optical lens 13 uses a glass member having a refractive index N _d2 of 1.5828 and an Abbe number v _d2 of 61.7. The diffraction angle of the light source is formed by the combination of the diffraction coefficient of the sealing material 12 and the optical lens 13 and the Abbe number. A blue light source of α = 13.958 lumen is emitted from the LED die 11, the effective maximum irradiation angle is 120 °, and the effective focal length f _s of the optical lens 13 is −42.375 mm. After that, β = 11.878 lumens (ignoring diffraction and scattering effects in air) at an infinite distance (f _s is 100 times) at a wide irradiation angle of 158 °. Equations (1) to (5) are respectively

  Therefore, the conditional expressions (1) to (5) can be adapted. As shown in Table (5), Table (6) and FIG. 5, the aspherical wide irradiation angle light-emitting diode optical lens according to the present invention has a simple surface shape, is easy to manufacture, and the light-emitting diode constituent material is predetermined. It is proved that the applicability of the present invention can be improved because the light distribution pattern is emitted and the radiated light peak intensity distribution at each angle is uniform.

<Example 3>
2 and 6 are a schematic view of attaching the optical lens according to the present invention to the LED component, and a polar coordinate correlation diagram according to the light peak intensity and the irradiation angle of Example 3. FIG.

The following table (5) shows the LED die 11, the seal material 12, the radius of curvature R between the light source side optical surface R1 and the image side optical surface R2 of the optical lens 13, the distance d, the LED along the central axis z from the light source side to the image side. The maximum angle of the die 11 radiation light source is 2ω, the light dispersion pattern maximum angle 2φ of the optical lens 13 radiation light source, each diffraction index (N _d ), each Abbe number v _d , and each thickness (thickness). Table (6) below shows the aspherical surface of each optical surface and the coefficients of equation (6).

In this embodiment, the sealing material 12 is filled with transparent optical silica gel having a refractive index N _d1 of 1.527 and an Abbe number v _d1 of 34. The optical lens 13 uses a glass member having a refractive index N _d2 of 1.5828 and an Abbe number v _d2 of 61.7. The diffraction angle of the light source is formed by the combination of the diffraction coefficient of the sealing material 12 and the optical lens 13 and the Abbe number. A blue light source of α = 13.958 lumen is emitted from the LED die 11, the effective maximum angle is 120 °, and the effective focal length f _s of the optical lens 13 is 86.50 mm. Later, β = 13.809 lumens (ignoring diffraction and scattering effects in the air) at an infinite distance (f _s is 100 times) at a wide irradiation angle of 164 °. Equations (1) to (5) are respectively

  Therefore, the conditional expressions (1) to (5) can be adapted. As shown in Table (6), Table (6) and FIG. 5, the aspherical wide irradiation angle light-emitting diode optical lens according to the present invention has a simple surface shape, is easy to manufacture, and the light-emitting diode constituent material is a predetermined one. It is proved that the applicability of the present invention can be improved because the light distribution pattern is emitted and the radiated light peak intensity distribution at each angle is uniform.

<Example 4>
2 and 7 are schematic diagrams of the LED optical lens of the present invention, and polar coordinate correlation diagrams according to the light peak intensity and the irradiation angle of Example 4. FIG.

The following table (7) shows the LED die 11, the seal material 12, and the radius of curvature R between the light source side optical surface R1 and the image side optical surface R2 of the optical lens 13 from the light source side to the image side, distance d, LED The maximum angle of the die 11 radiation light source is 2ω, the light dispersion pattern maximum angle 2φ of the optical lens 13 radiation light source, each diffraction index (N _d ), each Abbe number v _d , and each thickness (thickness). Table (8) below shows the aspherical surface of each optical surface and the coefficients of equation (6).

In this embodiment, the sealing material 12 is filled with transparent optical silica gel having a refractive index N _d1 of 1.527 and an Abbe number ν _d1 of 34. The optical lens 13 uses a plastic member having a refractive index N _d2 of 1.530 and an Abbe number v _d2 of 57. The diffraction angle of the light source is formed by the combination of the diffraction coefficient of the sealing material 12 and the optical lens 13 and the Abbe number. A blue light source of α = 13.958 lumen is emitted from the LED die 11, the effective maximum angle is 120 °, and the effective focal length fs of the optical lens 13 is 57.195 mm. Β = 13.864 lumens (ignoring diffraction and scattering effects in the air) at an infinite distance (with f _s being 100 times) at a wide irradiation angle of 164 °. Equations (1) to (5) are respectively

  Therefore, the conditional expressions (1) to (5) can be adapted. As shown in Table (7), Table (8) and FIG. 7, the aspherical wide irradiation angle light emitting diode optical lens according to the present invention has a simple surface shape, is easy to manufacture, and the light emitting diode constituent material is a predetermined one. It is proved that the applicability of the present invention can be improved because the light distribution pattern is emitted and the radiated light peak intensity distribution at each angle is uniform.

<Example 5>
FIGS. 2 and 8 are a schematic view of attaching the optical lens according to the present invention to an LED component, and a polar coordinate correlation diagram according to the light peak intensity and the irradiation angle of Example 5. FIG.

The following table (9) shows the LED die 11, the seal material 12, and the radius of curvature R of the light source side optical surface R1 and the image side optical surface R2 of the optical lens 13 from the light source side to the image side, the distance d, and the LED. The maximum angle of the die 11 radiation light source is 2ω, the light dispersion pattern maximum angle 2φ of the optical lens 13 radiation light source, each diffraction index (N _d ), each Abbe number v _d , and each thickness (thickness). Table (10) below shows the aspherical surface of each optical surface and the coefficients of equation (6).

In this embodiment, the sealing material 12 is filled with transparent optical silica gel having a refractive index N _d1 of 1.527 and an Abbe number v _d1 of 34. The optical lens 13 uses a glass member having a refractive index N _d2 of 1.5828 and an Abbe number v _d2 of 61.7. The diffraction angle of the light source is formed by the combination of the diffraction coefficient of the sealing material 12 and the optical lens 13 and the Abbe number. A blue light source of α = 13.958 lumen is emitted from the LED die 11, the effective maximum angle is 120 °, and the effective focal length f _s of the optical lens 13 is −143.15 mm, which is collected from the optical lens 13. After that, β = 11.923 lumens (ignoring diffraction and scattering effects in the air) at an infinite distance (f _s is 100 times) at a wide irradiation angle of 164 °. Equations (1) to (5) are respectively

  Therefore, the conditional expressions (1) to (5) can be adapted. As shown in Table (9), Table (10) and FIG. 8, the aspherical wide irradiation angle light-emitting diode optical lens according to the present invention has a simple surface shape, is easy to manufacture, and the light-emitting diode constituent material is a predetermined one. It is proved that the applicability of the present invention can be improved because the light distribution pattern is emitted and the radiated light peak intensity distribution at each angle is uniform.

<Example 6>
FIGS. 2 and 9 are schematic diagrams of attaching the optical lens according to the present invention to the LED component, and polar coordinate correlation diagrams according to the light peak intensity and the irradiation angle of Example 6. FIG.

The following table (11) shows the LED die 11 along the central axis z from the light source side to the image side, the sealing material 12, the radius of curvature R of the light source side optical surface R1 and the image side optical surface R2 of the optical lens 13, the distance d, the LED The maximum angle of the die 11 radiation light source is 2ω, the light dispersion pattern maximum angle 2φ of the optical lens 13 radiation light source, each diffraction index (N _d ), each Abbe number v _d , and each thickness (thickness). Table (12) below shows the aspherical surface of each optical surface and the coefficients of equation (6).

In this embodiment, the sealing material 12 is filled with transparent optical silica gel having a refractive index N _d1 of 1.527 and an Abbe number v _d1 of 34. The optical lens 13 uses a glass member having a refractive index N _d2 of 1.5828 and an Abbe number v _d2 of 61.7. The diffraction angle of the light source is formed by the combination of the diffraction coefficient of the sealing material 12 and the optical lens 13 and the Abbe number. A white light source of α = 78 lumens is emitted from the LED die 11, the effective maximum angle is 130 °, and the effective focal length f _s of the optical lens 13 is 142.96 mm. Β = 69.168 lumens (ignoring diffraction and scattering effects in air) at an infinite distance (with f _s being 100 times) at a wide irradiation angle of 160 °. Equations (1) to (5) are respectively

  Therefore, the conditional expressions (1) to (5) can be adapted. As shown in Table (10), Table (11), and FIG. 9, the aspherical wide irradiation angle light emitting diode optical lens according to the present invention has a simple surface shape, is easy to manufacture, and the light emitting diode constituent material is a predetermined one. It is proved that the applicability of the present invention can be improved because the light distribution pattern is emitted and the radiated light peak intensity distribution at each angle is uniform.

<Example 7>
FIGS. 2 and 10 are schematic views of attaching the optical lens according to the present invention to the LED component, and polar coordinate correlation diagrams according to the light peak intensity and the irradiation angle of Example 7.

The following table (13) shows the LED die 11, the seal material 12, and the radius of curvature R between the light source side optical surface R1 and the image side optical surface R2 of the optical lens 13 from the light source side to the image side, the distance d, and the LED. The maximum angle of the die 11 radiation light source is 2ω, the light dispersion pattern maximum angle 2φ of the optical lens 13 radiation light source, each diffraction index (N _d ), each Abbe number v _d , and each thickness (thickness). Table (14) below shows the aspherical surface of each optical surface and the coefficients of equation (6).

In this embodiment, the sealing material 12 is filled with transparent optical silica gel having a refractive index N _d1 of 1.527 and an Abbe number v _d1 of 34. The optical lens 13 uses a glass member having a refractive index N _d2 of 1.5828 and an Abbe number v _d2 of 61.7. The diffraction angle of the light source is formed by the combination of the diffraction coefficient of the sealing material 12 and the optical lens 13 and the Abbe number. A blue light source of α = 13.958 lumen is emitted from the LED die 11, the effective maximum angle is 130 °, and the effective focal length f _s of the optical lens 13 is −285.91 mm, which is collected from the optical lens 13. After that, β = 12.557 lumen (ignoring diffraction and scattering effects in the air) at an infinite distance (f _s is 100 times) at a wide irradiation angle of 158 °. Equations (1) to (5) are respectively

  Therefore, the conditional expressions (1) to (5) can be adapted. As shown in Table (13), Table (14), and FIG. 10, the aspherical wide irradiation angle light-emitting diode optical lens according to the present invention has a simple surface shape, is easy to manufacture, and the light-emitting diode constituent material is predetermined. It is proved that the applicability of the present invention can be improved because the light distribution pattern is emitted and the radiated light peak intensity distribution at each angle is uniform.

  As described above, the aspherical wide-angle light-emitting diode according to the present invention has a simple surface shape due to the effect of the optical lens and the light-emitting diode constituent material constituting the optical lens, and is a production process such as plastic injection molding or glass processing with a mold. Because there is no deformation even in mass production, production costs can be reduced.

  The aspherical wide illumination angle light emitting diode according to the present invention is an optical lens and the light emitting diode component constituting the optical lens. Another effect is that the illumination light source of the LED die has a predetermined light dispersion pattern, so that the illumination quality is improved.

  The aspherical wide illumination angle light emitting diode according to the present invention is an optical lens and a light emitting diode constituent material constituting the optical lens. Further, the radiation source of the LED die can maintain the same light peak intensity at all angles. There is no difference in brightness between areas, and the quality of lighting is improved.

  Although the embodiments of the present invention have been described above by way of example, they are for illustrative purposes only and do not impose any restrictions on the present invention. Therefore, those who are familiar with this type of technology shall still be included in the claim category of the present invention, such as changes, modifications, or equivalent changes to the spirit and category of the present invention.

It is the application schematic diagram to LED constituent material by the LED optical lens by a well-known technique. 1 is a schematic view of an optical lens of a kind of aspherical wide illumination angle light emitting diode according to the present invention and an LED constituent material of a light emitting diode constituent material constituting the optical lens. It is the schematic of the LED optical lens optical path of this invention. It is a polar-coordinate relationship figure of the light peak intensity distribution of LED constituent material by this invention Example 1, and an irradiation angle. It is a polar coordinate relationship figure of the light peak intensity distribution of the LED constituent material by this invention Example 2, and an irradiation angle. It is a polar coordinate relationship figure of light peak intensity distribution of LED constituent material by this invention Example 3, and irradiation angle. It is a polar coordinate relationship figure of light peak intensity distribution of LED constituent material by this invention Example 4, and irradiation angle. It is a polar coordinate relationship figure of the light peak intensity distribution of the LED constituent material by this invention Example 5, and an irradiation angle. It is a polar coordinate relationship figure of the light peak intensity distribution of LED constituent material by this invention Example 6, and an irradiation angle. It is a polar coordinate relationship figure of light peak intensity distribution of LED constituent material by this invention Example 7, and irradiation angle.

Explanation of symbols

10 LED constituting material 11 and 21 LED die 12 sealant 13 optical lens 23 lens R ₁ light source side optical surface or a radius of curvature R ₂ video side optical surface or thickness d ₁ the central axis of the radius of curvature d ₀ centered on axis LED die half the surface of the upper LED die half light distribution pattern maximum angle of φ optical lens radiation thickness omega LED die radiation source maximum angle of the optical surface distance d ₂ central axis optical lens to the optical lens the light source side N _d diffractive index v _d Abbe number α Luminance value of LED die radiation source β Luminous intensity of image side infinite distance light source

Claims (8)

Applicable to a kind of light-emitting diode components, aspherical wide illumination angle light-emitting diode optical lens, including a light-emitting diode die, sealing material, and optical lens arranged from the light source side of the central axis to the video side In light-emitting diode optical lens,
The optical lens is a lens finished from a glass optical member having a concave surface and a convex surface, and the concave surface is disposed opposite to the light source to be an optical surface on the light source side, and the convex surface is disposed opposite to the image side to display the image side. As an optical surface, at least one optical surface is an aspherical surface, and the condition of the formula (A) is satisfied.
2. The optical lens of an aspherical wide illumination angle light emitting diode according to claim 1, wherein the optical lens further satisfies the condition of the formula (B).
2. The optical lens of an aspherical wide illumination angle light-emitting diode according to claim 1, wherein the optical lens further satisfies the condition of the formula (C).
The optical lens of an aspherical wide illumination angle light-emitting diode according to claim 2, wherein the optical lens further satisfies the condition of formula (D).
2. The optical lens of an aspherical wide illumination angle light emitting diode according to claim 1, wherein the optical lens is made of plastic. The aspherical wide irradiation angle light emitting diode and the light emitting diode die constituting the optical lens according to any one of claims 1 to 4, wherein a wide irradiation angle circular light dispersion pattern from 120 ° to 180 ° is included. And the conditions of Formula (E) are adapted, The light emitting diode structural material characterized by the above-mentioned.
7. The light emitting diode component according to claim 6, wherein the comparison value between the luminous intensity of the light emitting diode component radiation light source and the image side infinite distance light source luminous intensity satisfies the condition of formula (F).
β / α ≧ 85% (F)
α is the luminous intensity of the light emitting diode die radiation source β is the luminous intensity where diffraction and scattering effects in the air are ignored at the infinite distance on the light emitting diode component image side The aspherical wide-angle light-emitting diode component according to claim 6, wherein the optical lens is made of plastic.