CN2746537Y

CN2746537Y - Luminous of reflection lens

Info

Publication number: CN2746537Y
Application number: CNU2004201073336U
Authority: CN
Inventors: 刘英斌; 赵润
Original assignee: CETC 13 Research Institute
Current assignee: CETC 13 Research Institute
Priority date: 2004-11-23
Filing date: 2004-11-23
Publication date: 2005-12-14
Anticipated expiration: 2014-11-23

Abstract

The utility model discloses a luminotron of reflection lens which relates to a luminous diode device making a big diverging angle and high efficiency in the field of photoelectric device. The luminotron of reflection lens is composed of a base, a luminotron chip, and a reflection lens. The luminotron of reflection lens adopts the reflection lens whose front end is processed into a concave conical surface and whose outside is processed into an upper cone or a lower cone constitutional formula to realize the goals that light outgoes a big diverging angle and intensity of light is relative uniform in a relatively great spatial angle and extracting light efficiency is high. The utility model also has the advantages of convenient reflection lens manufacturing structure, easy changing diverging angle size, low cost, etc, and the luminotron of reflection lens is in particular suited to be a serial big diverging angle luminous device of different diverging angles.

Description

The luminous tube of reflection-type lens

Technical field

The utility model relates to the luminous tube of a kind of reflection-type lens in the photoelectric device field, is specially adapted to do high dispersion angle, high efficiency LED device.

Background technology

Light-emitting diode (is called for short luminous tube, LED) as the light source of small-sized efficient, has a wide range of applications at aspects such as illumination, signal indication and infrared active illuminations in recent years.Light-emitting diode adopts transparent material such as encapsulation such as resin or glass more at present, adopts this packing forms to mainly contain two purposes: 1, improve light extraction efficiency; 2, by changing the requirement that front lens height and curvature satisfy certain far field half-intensity beam angle (the common name angle of divergence).The luminous characteristics of general light-emitting diode chip for backlight unit are that vertical chip direction intensity is stronger, the far field half-intensity beam angle of chip itself is generally less than 120 degree, adopt the way that changes package lens front end height and curvature can not reach the purpose of high dispersion angle (greater than 120 degree, as 150 degree or 170 degree) like this.Though therefore the luminous tube of common encapsulation is got the optical efficiency height, the angle of divergence is little, can not satisfy the requirement at Vernonia parishii Hook angle.The curvature of another kind of package lens front end diminishes, or simple complanation, though the angle of divergence makes moderate progress, but still do not reach the angle of divergence greater than 120 degree requirements, and its optical efficiency obviously reduces, light is total reflection and can not penetrating, and is circulated in the lens and loses at last, therefore still can not satisfy the instructions for use of Vernonia parishii Hook angle photoelectric device.

Summary of the invention

The purpose of this utility model be to avoid the weak point in the above-mentioned background technology and provide a kind of and get optical efficiency height, Vernonia parishii Hook angle, than the luminous tube of reflection-type lens relatively uniformly of light intensity in the large space angle, and the utility model also has the reflection-type lens arrangement and makes easy, angle of divergence size changes characteristics such as simple and easy, with low cost.

The purpose of this utility model is achieved in that the utility model, and it comprises base 1, chip of luminescent tube 2, reflection-type lens 3, wherein reflection-type lens 3 front ends are processed into spill taper seat 4 structures, its face of cylinder, outside is processed into up-thin-low-thick shape and is gone up cone 6 structures or be processed into cone 7 structures under the upper coarse and lower fine shape, chip of luminescent tube 2 is installed on the base 1, and chip of luminescent tube 2 usefulness reflection-type lens 3 are packaged into the luminous tube device.

Cone angle 5 sizes of the utility model reflection-type lens 3 front end spill taper seats 4 are 80 to 160 degree, the face of cylinder, reflection-type lens 3 outside is that its cone angle 8 sizes of last cone 6 structures are 0 to-30 degree, and the face of cylinder, the outside is that its cone angle 9 sizes of cone 7 structures are 0 to+30 degree down.

The utility model is compared background technology and is had following advantage:

1, the utility model reflection-type lens 3 front ends are processed into spill taper seat 4 structures, and cone 6 structures or following cone 7 structures are processed in its face of cylinder, outside, realize photoemissive high dispersion angle, and the angle of divergence is greater than 120 degree (150 degree or 170 degree) requirement.And in than the Space Angle scope, realize the even relatively of luminous intensity.Get the optical efficiency height simultaneously, the light internal loss is little.

2, the utility model reflection-type lens 3 adopt transparent materials such as resin commonly used or glass to make, and therefore with low cost, processing and manufacturing is simple and easy.

3, the utility model just can change the size of the light angle of divergence as long as change each angle of taper size of reflection-type lens 3, so the change of angle of divergence size is simple and easy, can make the luminous tube device of the serial angle of divergence, satisfies the different user instructions for use.

Description of drawings

Fig. 1 is that the utility model is the device architecture schematic diagram of last cone 6 structures.

Fig. 2 is the device architecture schematic diagram of cone 7 structures under the utility model is.

The arrow A of light, B direction are the signal direction of light outgoing among Fig. 1, Fig. 2.

Embodiment

With reference to Fig. 1, Fig. 2, the utility model is made up of base 1, chip of luminescent tube 2, reflection-type lens 3.Reflection-type lens 3 front ends are processed into spill taper seat 4 structures, and its effect is to strengthen the light dispersion angle, realizes the wide-angle outgoing of A direction light, and cone angle 5 sizes of taper seat 4 are 80 to 160 degree, and embodiment cone angle 5 is processed into 110 degree.The utility model reflection-type lens 3 its faces of cylinder, outside are processed into up-thin-low-thick shape and are gone up cone 6 structures or be processed into down thin cone 7 structures under the thick shape that, its effect is to make light intensity homogenizing in the effective Space Angle when strengthening the dispersion angle of light, makes the light smaller angle outgoing of B direction.Its cone angle 8 sizes of last cone 6 structures are 0 to-30 degree, its cone angle 9 sizes of following cone 7 structures are 0 to+30 degree, embodiment is a benchmark according to the device normal direction, lens 3 cone faces are processed into cone 6 structures, its cone angle 8 is less than cylinder, and then cone angle is a negative angle, and the cone face is processed into down cone 7 structures, its cone angle 9 is greater than cylinder, and then cone angle is a positive-angle.Embodiment cone angle 8 is processed into-10 degree or cone angle 9 is processed into+10 degree.Therefore the utility model has constituted the reflection-type lens arrangement by spill taper seat 4 and upper and lower cone 6 or 7, realizes wide dispersion angle requirement, gets the optical efficiency height simultaneously, reaches suitable with common encapsulating light emitting pipe.Lens 3 embodiment adopt transparent material such as glass or resin material to make, and adopt machining or mold cured technology, are processed into concave conical surface or circular cone three-dimensional-structure.

The utility model chip of luminescent tube 2 is installed on the base 1, and chip of luminescent tube 2 usefulness reflection-type lens 3 are packaged into the luminous tube device, and embodiment base 1 adopts the base of common luminous tube to make.Chip of luminescent tube 2 can adopt common light-emitting diode chip for backlight unit or resonant cavity chip of luminescent tube to make.

The concise and to the point operation principle of the utility model: the wide part of sending from chip of luminescent tube 2 is to incide on 6,7 of the upper and lower cones of the nose circle conical surface 4 or the outside with wide-angle, think that this angle is approaching or reach the angle of total reflection, light is reflected, light after the reflection penetrates through the front end conical surface or outboard cone, realizes the wide angle of divergence and gets the high purpose of optical efficiency.

Claims

1, a kind of luminous tube of reflection-type lens, it comprises base (1), chip of luminescent tube (2), it is characterized in that: also comprise reflection-type lens (3), reflection-type lens (3) front end is processed into spill taper seat (4) structure, its face of cylinder, outside is processed into up-thin-low-thick shape and is gone up cone (6) structure or be processed into cone under the upper coarse and lower fine shape (7) structure, chip of luminescent tube (2) is installed on the base (1), and chip of luminescent tube (2) is packaged into the luminous tube device with reflection-type lens (3).

2, the luminous tube of reflection-type lens according to claim 1, it is characterized in that: coning angle (5) size of reflection-type lens (3) front end spill taper seats (4) is 80 to 160 degree, the face of cylinder, reflection-type lens (3) outside is that its cone angle of last cone (6) (8) size is 0 to-30 degree, and the face of cylinder, the outside is that cone (7) its cone angle of structure (9) size is 0 to+30 degree down.