CN211694744U

CN211694744U - Packaging structure based on optical fiber light guide and optical fiber light guide system

Info

Publication number: CN211694744U
Application number: CN202020393470.XU
Authority: CN
Inventors: 张航; 陆建东; 葛燕妮; 马慧玲; 朱瓒
Original assignee: Zhejiang Guangta Safety Technology Co Ltd
Current assignee: Zhejiang Guangta Safety Technology Co Ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2020-10-16
Anticipated expiration: 2030-03-25

Abstract

An optical fiber light guide-based packaging structure and an optical fiber light guide system belong to the technical field of lighting sources and packaging. The packaging structure comprises an optical fiber, a diffusion lens, a first glass layer, a second glass layer and a fluorescent layer; the diffusion lens and the optical fiber are arranged on the light-emitting end side of the optical fiber at a certain distance; a first glass layer, a fluorescent layer and a second glass layer are sequentially arranged above the diffusion lens from bottom to top; a spacing distance is reserved between the first glass layer and the diffusion lens; after light transmitted by the optical fiber is diffused by the diffusion lens, the light passes through the first glass layer and is excited at the fluorescent layer and is emitted out through the second glass layer. The system comprises the laser light source and the packaging structure. The utility model discloses simple structure, it is convenient to encapsulate, and reflection of light area is little, and the light efficiency is good.

Description

Packaging structure based on optical fiber light guide and optical fiber light guide system

Technical Field

The utility model belongs to the technical field of lighting source and encapsulation, especially, relate to an packaging structure, optic fibre leaded light system based on optic fibre leaded light.

Background

Compared with the traditional light source, the semiconductor Light Emitting Diode (LED) has the advantages of energy conservation, environmental protection, longer service life, smaller volume and the like, and is considered as the most ideal fourth-generation lighting source for replacing the traditional fluorescent lamp. At present, the LED lamps used in the fields of illumination, display, backlight source, etc. mainly use a fluorescent down-conversion LED, and the main light emitting part of the LED lamps is composed of a semiconductor light emitting chip and a fluorescent powder layer that can be effectively excited by ultraviolet or blue light. The size and uniformity of the phosphor particles directly affect the light-emitting performance of the powder, and the overall lighting performance of the packaged LED lamp is determined to a certain extent by the packaging structure of the particles in the LED lamp. In the past, the fluorescent powder is uniformly dispersed in other transparent media before being packaged so as to meet the light transmission performance and uniformity of the fluorescent powder layer, but the process flow of LED lamp packaging is increased. In addition, the process of uniformly mixing the fluorescent powder and the silica gel according to a certain proportion, directly coating the mixture on the surface of the chip after the bonding wire is finished and baking the mixture also has defects, so that the problems of color coordinate drift, poor uniformity of light emission, failure and the like of an LED are easily caused.

The applicant's prior application CN201910941217.5 discloses an optical fiber light guide device and system, and specifically discloses a device comprising an optical fiber, a diffusion lens, a fluorescent layer, and an encapsulation layer; the diffusion lens and the optical fiber are arranged on the light-emitting end side of the optical fiber at a certain distance; the fluorescent layer and the packaging layer are sequentially arranged above the diffusion lens from bottom to top; after light transmitted by the optical fiber is diffused by the diffusion lens, the light is excited at the fluorescent layer and is emitted out through the packaging layer. The device has a large light reflection area, and the light effect is influenced by light reflection; and the optical fiber is connected on the fixing block for packaging in a fusion mode, so that the operation is more complicated, and the installation is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the problem that prior art exists, provide a simple structure, radiating effect is good, reflection of light area is little, the good packaging structure, the optic fibre leaded light system based on optic fibre leaded light of light efficiency.

The utility model discloses a can realize through following technical scheme:

the utility model relates to a packaging structure based on optical fiber light guide, which comprises an optical fiber, a diffusion lens, a first glass layer, a second glass layer and a fluorescent layer; the diffusion lens and the optical fiber are arranged on the light-emitting end side of the optical fiber at a certain distance; the first glass layer, the fluorescent layer and the second glass layer are sequentially arranged above the diffusion lens from bottom to top; a spacing distance is reserved between the first glass layer and the diffusion lens; after light transmitted by the optical fiber passes through the diffusion lens to realize light diffusion, the light passes through the first glass layer and is excited at the fluorescent layer and is emitted out through the second glass layer.

The packaging structure is simple, the packaging is convenient, and the light emitting efficiency of emergent light is good.

Preferably, the diffusion lens, the first glass layer, the fluorescent layer, the second glass layer, and the optical fiber are encapsulated together by a fixing block.

Preferably, the fixing block is a hollow circular ring fixing block; the diffusion lens, the first glass layer, the fluorescent layer and the second glass layer are packaged in a cavity of the fixed block, and the light emitting end of the optical fiber is fixed at the bottom of the fixed block.

Preferably, the light-emitting end of the optical fiber is fixed at the bottom of the fixed block through an optical fiber ceramic head.

Compared with the CN201910941217.5 patent, the scheme has the advantages that the ceramic head direct insertion method using the optical fiber is connected to the fixed block from the structural aspect, the operation is simpler and more convenient, and the loss generated during the optical fiber fusion can be avoided.

Preferably, the first glass layer and the second glass layer are both flat glass layers having the same refractive index.

Preferably, the first glass layer and the second glass layer are both quartz glass layers.

Preferably, the surface area of the first glass layer is equal to the surface area of the phosphor layer, and the surface area of the second glass layer is larger than the surface area of the phosphor layer.

Preferably, the fluorescent layer is a fluorescent layer or a fluorescent powder layer.

An optical fiber light guide system is characterized by comprising a laser light source and the optical fiber light guide-based packaging structure; the laser light source is arranged at the light inlet end side of the optical fiber.

The utility model discloses following beneficial effect has:

the utility model relates to a packaging structure, optic fibre leaded light system based on optic fibre leaded light:

1. simple structure, convenient operation and encapsulation.

2. The laser energy is dispersed by the light diffusing lens to reduce the power density and the destructiveness of the laser light is reduced.

3. This scheme is compared with CN201910941217.5 patent, and from the aspect of the application, it is little to reflect light area, and the light efficiency is better, and the light that reflects is stronger, makes the white light intensity that detects and return from same root optic fibre higher to realize the function of feedback in the fibre.

4. The heat dissipation fixed block is in large-area contact with the heating device, so that the device can dissipate heat more quickly.

Drawings

Fig. 1 is a schematic structural diagram of an optical fiber light guide system according to the present invention;

fig. 2 is an exploded view of the package structure based on optical fiber light guiding in fig. 1.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Referring to fig. 1 and 2, an optical fiber light guide based package structure includes an optical fiber 2, a diffusion lens 9, a first glass layer 31, a second glass layer 32, and a fluorescent layer 5. The diffusion lens 9 and the optical fiber 2 are arranged on the light-emitting end side of the optical fiber 2 at a certain distance. The first glass layer 31, the fluorescent layer 5 and the second glass layer 32 are sequentially arranged above the diffusion lens 9 from bottom to top. A spacing distance is left between the first glass layer 31 and the diffusion lens 9. After light transmitted by the optical fiber 2 is diffused by the diffusion lens 9, the light passes through the first glass layer 31, is excited at the fluorescent layer 5, and exits through the second glass layer 32.

The diffusion lens 9, the first glass layer 31, the fluorescent layer 5, the second glass layer 32, and the optical fiber 2 are packaged into a whole through a fixing block. The fixed block 4 is a hollow circular ring fixed block, namely, the centers of the top and the bottom of the fixed block are hollowed. The diffusion lens 9, the first glass layer 31, the fluorescent layer 5 and the second glass layer 32 are packaged in a cavity of the fixed block, the light emitting end of the optical fiber 2 is fixed to the bottom of the fixed block 4, and if the light emitting end of the light is fixed to the bottom of the fixed block through a light ceramic head. And a certain gap is reserved between the fixed block and the encapsulated structure so as to conduct heat emitted by the laser to the outside of the device.

The fluorescent layer is a fluorescent layer or a fluorescent powder layer. In view of the physical stability of the phosphor sheet, it is preferable that the phosphor layer is a phosphor sheet layer. The fluorescent sheet layer is a ceramic fluorescent sheet layer. The fluorescent ceramic material is an all-inorganic composite fluorescent material which is co-sintered by using fluorescent powder and ceramic, and has high heat resistance and high thermal conductivity of inorganic materials, and the yellowing resistance of the inorganic materials keeps the performance of devices. The fluorescent sheet has concentrated light color quality and good consistency, greatly reduces the rework rate, can keep long service life, and can prolong the service life of products. The physical stability of the fluorescent sheet is suitable for general environmental storage, and the storage is convenient; the waste of waste materials and materials can be reduced in the aspect of use. The fluorescent layer 5 is fixed between the first sheet glass 31 and the second sheet glass 32 by an adhesive.

The diffusion lens is adhered to the inner surface of the bottom of the fixing block by using glue. In order to prevent the lens from being damaged due to laser overheating, the distance between the optical fiber 2 and the diffusion lens 9 is 2-5 mm. For example, the diffusion lens is an inverted truncated cone with an inwardly concave bottom surface. The concave part of the inverted round table is an incident cavity, and the top surface of the inverted round table is an emergent plane. The bottom surface of the inverted round table is a torus.

The first glass layer and the second glass layer are both flat glass layers with the same refractive index. The surface area of the first glass layer is equal to the surface area of the fluorescent layer, and the surface area of the second glass layer is larger than the surface area of the fluorescent layer. The first glass layer and the second glass layer are both quartz glass layers. Therefore, the reflecting area is small, the influence of the emergent light effect of the reflected light is weakened, and the light intensity fed back in the fiber is enhanced. The spacing distance between the first glass layer and the diffusion lens is 2-3 mm.

An optical fiber light guide system comprises a laser light source and the optical fiber light guide-based packaging structure; the laser light source is arranged at the light inlet end side of the optical fiber. The laser light source is one of a solid laser, a gas laser, a semiconductor laser and a fiber laser.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The purpose of the utility model is completely and effectively realized. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims

1. The packaging structure based on optical fiber light guide is characterized by comprising an optical fiber, a diffusion lens, a first glass layer, a second glass layer and a fluorescent layer; the diffusion lens and the optical fiber are arranged on the light-emitting end side of the optical fiber at a certain distance; the first glass layer, the fluorescent layer and the second glass layer are sequentially arranged above the diffusion lens from bottom to top; a spacing distance is reserved between the first glass layer and the diffusion lens; after light transmitted by the optical fiber passes through the diffusion lens to realize light diffusion, the light passes through the first glass layer and is excited at the fluorescent layer and is emitted out through the second glass layer.

2. The optical fiber light guide based package structure of claim 1, wherein the diffusion lens, the first glass layer, the fluorescent layer, the second glass layer and the optical fiber are integrally packaged via a fixing block.

3. The optical fiber light guide based package structure according to claim 2, wherein the fixing block is a hollow ring fixing block; the diffusion lens, the first glass layer, the fluorescent layer and the second glass layer are packaged in a cavity of the fixed block, and the light emitting end of the optical fiber is fixed at the bottom of the fixed block.

4. The optical fiber light guide based package structure according to claim 3, wherein the light exit end of the optical fiber is fixed at the bottom of the fixing block through a fiber ceramic head.

5. The optical fiber light guide based package structure according to claim 1, wherein the first glass layer and the second glass layer are both flat glass layers having the same refractive index.

6. The optical fiber light guide based package structure according to claim 1, wherein the first glass layer and the second glass layer are both quartz glass layers.

7. The package structure of claim 1, wherein the surface area of the first glass layer is equal to the surface area of the phosphor layer, and the surface area of the second glass layer is larger than the surface area of the phosphor layer.

8. The package structure of claim 1, wherein the phosphor layer is a phosphor layer or a phosphor powder layer.

9. A fiber optic light guide system comprising a laser light source, the package structure for guiding light based on optical fiber according to any one of claims 1 to 8; the laser light source is arranged at the light inlet end side of the optical fiber.