CN101639194B - Optical illumination module - Google Patents

Abstract

The invention relates to an optical illumination module, which comprises a fixed light source and a plano-convex lens, wherein the fixed light source is a light-emitting diode; the plano-convex lens is an aspheric lens in rotary symmetry, and is arranged within a specific distance more than or equal to 13.5 millimeters and less than or equal to 16.3 millimeters in an optical axis direction of the fixed light source; and a plane end of the plano-convex lens is a light beam incident surface, while a convex end is a light beam emergent surface. When the fixed light source is arranged at a coordinate origin, a convex curve of the plano-convex lens is formed by serially connecting a series of points with specific coordinate values; and when the plano-convex lens displaces in the specific distance, the light source can refract an illumination angle to the minimum so as to achieve the aim of improving illumination intensity and prolonging illumination distance.

Description

Optical illumination module

Technical field

The present invention relates generally to a kind of optical illumination module, refers to a kind of optical illumination module that is applied on flashlight or the various lighting, can produces the optimum angle light beam especially.

Background technology

Related known structure in the prior art; it as the TaiWan, China letters patent number is No. 568245 " flashlight of the optically focused of can showing up entirely ": the flashlight of the optically focused of can showing up entirely; it comprises that flashlight body, lamp socket, lampshade group and high transmission optical bodies form; this flashlight body series has a battery tube can supply set battery; the device that this lamp socket system plants and connects for light-emitting component; and be located in flashlight body front end; and this lampshade system group is sheathed on the lampshade device of flashlight body front-end protection lamp socket and luminescence component, it is characterized in that:

Optical bodies, system forms the optical clear eyeglass of a disk shape, be provided with the convex globoidal of different round tangent plane diameter in sheet-form optical body both ends of the surface, make the circle tangent plane diameter of its front end convex globoidal bigger, and the circle tangent plane diameter of rear end convex globoidal is less relatively, constitute the show up full optical bodies of optically focused of transmissive by this, and be installed with and located among being fixed in the lampshade group, in order to do together being assembled in flashlight body front end with the lampshade group, make optical bodies place light-emitting component the place ahead, form the flashlight person of the optically focused of can showing up entirely by this.

The known configurations that discloses above, the both ends of the surface of the optical bodies that adopts are convex globoidal, and these two convex globoidals are round tangent plane, be general known application and be designed to the ball face at the lens of lighting, when the focus of ball face one end is placed light source, to reflect from the other end after the anaclasis, and can obtain collimated light beam in theory, this is minimum shooting angle.But when in fact adopting ball face convex lens, can't obtain completely parallel light beam, to the light source refraction, still astigmatic phenomenon can occur.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of optical illumination module that increases light gathering, raising luminous intensity and the well-balanced degree of light area.

For achieving the above object, the invention provides a kind of optical illumination module, it comprises:

Fixed light source is light emitting diode, is located at the origin of coordinates; Be provided with planoconvex spotlight at its optical axis direction specific range;

Planoconvex spotlight, for having the rotational symmetric aspheric surface design of suitable thickness, it constitutes, and the curvature of any all might be inequality arbitrarily on the convex surface; In addition, further describe the convex surface curve constitutive characteristic of this planoconvex spotlight, when fixed light source is arranged on the origin of coordinates, the coordinate of putting on the convex surface curve of planoconvex spotlight (X, Y) value is respectively: (12,8.00), (11,8.05), (10,8.20), (9,8.44), (8,8.79), (7,9.25), (6,9.82), (5,10.51), (4,11.33), (3,12.29), (2,13.42), (1,14.75), (0,16.30), (1,14.75), (2,13.42), (3,12.29), (4,11.33), (5,10.51), (6,9.82), (7,9.25), (8,8.79), (9,8.44), (10,8.20), (11,8.05), (12,8.00), through the convex surface curve that aforementioned preferred coordinates value is constituted, its curvilinear motion value is in positive and negative 1 millimeter, and at the specific range intrinsic displacement of fixed light source and planoconvex spotlight, the light beam that light source all can be provided is reflected by the convex surface end of planoconvex spotlight, has the essence ability that improves intensity of illumination.

Wherein, the planoconvex spotlight that is constituted by aforementioned preferred coordinates value, its one-tenth-value thickness 1/10 from plane to convex surface summit be arranged on more than or equal to 6 millimeters and smaller or equal to 10 millimeters between, and can carry out proportional zoom as benchmark according to aforementioned preferred coordinates value and one-tenth-value thickness 1/10, still can keep its equivalence.

In addition, the present invention also provides a kind of optical illumination module, and this module comprises fixed light source and planoconvex spotlight, the light-emitting area of this fixed light source to the distance of the convex surface endvertex of planoconvex spotlight more than or equal to 13.5 millimeters and smaller or equal to 16.3 millimeters.

The present invention also provides a kind of optical illumination module, comprising: fixed light source, be located at the origin of coordinates; On its optical axis direction to the distance of its light-emitting area more than or equal to 13.5 millimeters and smaller or equal in 16.3 millimeters the scope, be provided with rotational symmetric aspheric surface planoconvex spotlight, this planoconvex spotlight from planar ends the distance to the convex surface endvertex more than or equal to 6 millimeters and smaller or equal to 10 millimeters, and the convex surface curve by coordinate (X, Y) value is respectively: (12,8.00), (11,8.05), (10,8.20), (9,8.44), (8,8.79), (7,9.25), (6,9.82), (5,10.51), (4,11.33), (3,12.29), (2,13.42), (1,14.75), (0,16.30), (1,14.75), (2,13.42), (3,12.29), (4,11.33), (5,10.51), (6,9.82), (7,9.25), (8,8.79), (9,8.44), (10,8.20), (11,8.05), the point of (12,8.00) constitutes.

As can be seen from the above technical solutions, optical illumination module of the present invention, it mainly designs an aspheric planoconvex spotlight, and be arranged on the planar ends of planoconvex spotlight, the fixed light source of specific range at interval, in view of the above, when this planoconvex spotlight was located in aforementioned specific range, the light that all can make fixed light source reflected minimum shooting angle by the convex surface end of planoconvex spotlight, with the light gathering that increases the light area, improve luminous intensity and well-balanced degree.

Description of drawings

Fig. 1 is the schematic diagram of the relative assembling position of preferred embodiment of optical illumination module of the present invention;

Fig. 2 is the displacement planoconvex spotlight of optical illumination module of the present invention and the schematic diagram that the fixed light source distance is the optically focused light refraction;

Fig. 3 is the displacement planoconvex spotlight of optical illumination module of the present invention and the schematic diagram that the fixed light source distance is astigmatic light refraction.

Description of reference numerals

Fixed light source 10

Planoconvex spotlight 20

The specific embodiment

Cooperate the accompanying drawing of preferred embodiment of the present invention to further describe below again,, implemented technical scheme of the present invention according to the description of this specification in the hope of making the personage who is familiar with correlation technique of the present invention.

At first, as shown in Figure 1, be the preferred embodiment of optical illumination module of the present invention, it comprises:

Fixed light source 10, be a kind of light emitting diode, be positioned at the optical axis direction specified distance and be provided with planoconvex spotlight 20, aforementioned specific range refers to more than or equal to 13.5 millimeters and smaller or equal between 16.3 millimeters, and distance definition is the distance of the light-emitting area of fixed light source 10 to the convex surface summit of planoconvex spotlight 20;

Planoconvex spotlight 20, lens for a kind of rotational symmetric aspheric surface design, its planar ends is as beam incident surface, the convex surface end is as the light beam exit facet, when fixed light source 10 when planoconvex spotlight 20 is within above-mentioned specific range, planoconvex spotlight 20 from planar ends the distance to the convex surface endvertex more than or equal to 6 millimeters and be perfect condition smaller or equal to 10 millimeters, and in order to define the convex surface curve formation value of aspheric surface planoconvex spotlight 20 of the present invention more clearly, the spy is located at coordinate (X temporarily with fixed light source 10, Y) initial point (0,0) position, and the coordinate of putting on the convex surface curve of planoconvex spotlight 20 (X, Y) value, as shown in table 1:

X-axis	Y-axis	X-axis	Y-axis
				12?	8.00?	-1?	14.75?
11?	8.05?	-2?	13.42?
				10?	8.20?	-3?	12.29?
9?	8.44?	-4?	11.33?
				8?	8.79?	-5?	10.51?
7?	9.25?	-6?	9.82?
				6?	9.82?	-7?	9.25?
5?	10.51?	-8?	8.79?
				4?	11.33?	-9?	8.44?
3?	12.29?	-10?	8.20?
				2?	13.42?	-11?	8.05?
1?	14.75?	-12?	8.00?
				0?	16.30?	?	?

Table 1

Be respectively: (12,8.00), (11,8.05), (10,8.20), (9,8.44), (8,8.79), (7,9.25), (6,9.82), (5,10.51), (4,11.33), (3,12.29), (2,13.42), (1,14.75), (0,16.30), (1,14.75), (2,13.42), (3,12.29), (4,11.33), (5,10.51), (6,9.82), (7,9.25), (8,8.79), (9,8.44), (10,8.20), (11,8.05), (12,8.00), through the convex surface curve that aforementioned preferred coordinates value is constituted, its curvilinear motion value positive and negative 1 millimeter with interior all can, and at the specific range intrinsic displacement of fixed light source 10 and planoconvex spotlight 20 (as Fig. 2, shown in Figure 3), the light beam that light source all can be provided reflects as far as possible little shooting angle by the convex surface end of planoconvex spotlight 20, makes to have the function that improves luminous intensity in this effective lighting zone.

In addition, what remark additionally is, the planoconvex spotlight 20 of optical illumination module of the present invention, it is a benchmark with the coordinate figure put on the above-mentioned convex surface curve and the one-tenth-value thickness 1/10 of planoconvex spotlight 20, can carry out proportional zoom, still can make light source reflect as far as possible little light angle, have the function that improves exposure intensity and prolong irradiation distance.

In addition, the aspheric surface that forms of the aspheric curvature of planoconvex spotlight of the present invention curve table (as shown in table 1) repeatedly.The convex surface of this aspheric surface planoconvex spotlight 20 also meets the following conditions:

$\mathrm{sag}\left(\mathrm{\ρ}\right)=\frac{{\mathrm{\ρ}}^2/r}{1+\sqrt{1-(1+c){(\mathrm{\ρ}/r)}^2}}+d{\mathrm{\ρ}}^4+e{\mathrm{\ρ}}^6+f{\mathrm{\ρ}}^8+g{\mathrm{\ρ}}^{10}+h{\mathrm{\ρ}}^{12}...l{\mathrm{\ρ}}^{20}$

Wherein,

ρ is the distance values of aspheric curve and ideal plane, and it refers to the polar coordinates value of the distance of the aspheric surface centre of sphere;

R is the aspheric surface center radius value of planoconvex spotlight 20;

C is the asphericity coefficient of quadratic term;

D, e, f, g, h ..., 1 is repeatedly the asphericity coefficient of item;

But, aspheric size is not limited, but, if planoconvex spotlight 20 radiuses are located in 3 millimeters to 10 millimeters the scope, its curvature changes the curve that presented can be by two parabola clampings, and aspheric surface of the present invention arbitrarily the curvature of any change formed aspheric curve can be between two parabola.

The light source distance that the aspheric surface planoconvex spotlight 20 of this design is arranged in pairs or groups is more than or equal to 13.5 millimeters and smaller or equal to 16.3 millimeters, and distance definition is the distance of convex surface summit to the light-emitting area of fixed light source 10.

In sum, only be a preferred embodiment of the present invention, be not to be used for limiting protection scope of the present invention.Be that all equalizations that claims are done according to the present invention change and modification, be claim of the present invention and contain.

Claims (6)

1. an optical illumination module is characterized in that, comprising: fixed light source, be located at the origin of coordinates; And rotate symmetrical aspheric planoconvex spotlight, the light-emitting area of described fixed light source to the distance of the convex surface endvertex of described planoconvex spotlight between 13.5 millimeters to 16.3 millimeters, the coordinate (X that puts on the described planoconvex spotlight convex surface curve, Y) value is respectively: (12,8.00), (11,8.05), (10,8.20), (9,8.44), (8,8.79), (7,9.25), (6,9.82), (5,10.51), (4,11.33), (3,12.29), (2,13.42), (1,14.75), (0,16.30), (1,14.75), (2,13.42), (3,12.29), (4,11.33), (5,10.51), (6,9.82), (7,9.25), (8,8.79), (9,8.44), (10,8.20), (11,8.05), (12,8.00), through the convex surface curve that described coordinate figure constituted, its curvilinear motion value is in positive and negative 1 millimeter, and the light beam of fixed light source is reflected by the convex surface end of planoconvex spotlight.

2. optical illumination module according to claim 1 is characterized in that, described planoconvex spotlight from planar ends the distance to the convex surface endvertex more than or equal to 6 millimeters and smaller or equal to 10 millimeters.

3. optical illumination module according to claim 1 is characterized in that, described fixed light source is a light emitting diode.

4. optical illumination module according to claim 1 is characterized in that, the convex surface curve of described planoconvex spotlight carries out proportional zoom according to the one-tenth-value thickness 1/10 of its coordinate figure and described planoconvex spotlight.

5. an optical illumination module is characterized in that, comprising: fixed light source, be located at the origin of coordinates; On its optical axis direction to the distance of its light-emitting area more than or equal to 13.5 millimeters and smaller or equal in 16.3 millimeters the scope, be provided with rotational symmetric aspheric surface planoconvex spotlight, this planoconvex spotlight from planar ends the distance to the convex surface endvertex more than or equal to 6 millimeters and smaller or equal to 10 millimeters, and the convex surface curve by coordinate (X, Y) value is respectively: (12,8.00), (11,8.05), (10,8.20), (9,8.44), (8,8.79), (7,9.25), (6,9.82), (5,10.51), (4,11.33), (3,12.29), (2,13.42), (1,14.75), (0,16.30), (1,14.75), (2,13.42), (3,12.29), (4,11.33), (5,10.51), (6,9.82), (7,9.25), (8,8.79), (9,8.44), (10,8.20), (11,8.05), the point of (12,8.00) constitutes.

6. optical illumination module according to claim 5 is characterized in that, described fixed light source is a light emitting diode.

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