CN112460505A - Reflection type excitation lighting device - Google Patents

Reflection type excitation lighting device Download PDF

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Publication number
CN112460505A
CN112460505A CN202011537663.9A CN202011537663A CN112460505A CN 112460505 A CN112460505 A CN 112460505A CN 202011537663 A CN202011537663 A CN 202011537663A CN 112460505 A CN112460505 A CN 112460505A
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CN
China
Prior art keywords
diffusion lens
reflecting
cup
light
reflecting layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011537663.9A
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Chinese (zh)
Inventor
张航
陆建东
傅磊
葛燕妮
朱瓒
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Zhejiang Guangta Safety Technology Co Ltd
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Zhejiang Guangta Safety Technology Co Ltd
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Filing date
Publication date
Application filed by Zhejiang Guangta Safety Technology Co Ltd filed Critical Zhejiang Guangta Safety Technology Co Ltd
Priority to CN202011537663.9A priority Critical patent/CN112460505A/en
Publication of CN112460505A publication Critical patent/CN112460505A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/30—Semiconductor lasers

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

A reflective excitation lighting device belongs to the technical field of optics. The device comprises a laser light source, a transmission optical fiber, a reflection cup, a diffusion lens, a fluorescent sheet and a reflecting layer; the reflection cup, the fluorescent sheet and the reflection layer are arranged in the packaging shell; the front end of the reflecting cup is used for fixing a bare core plug at one end of a transmission optical fiber, the rear end of the reflecting cup is used for fixing a diffusion lens, and the light-emitting surface of the diffusion lens is flush with the surface of the rear end of the reflecting cup; the reflecting layer is obliquely arranged in the packaging shell, and the fluorescent sheet is obliquely arranged in the packaging shell and is arranged on the incident surface of the reflecting layer; laser emitted by the laser source sequentially passes through the diffusion lens and the fluorescent sheet through the transmission optical fiber to reach the reflecting layer, and the excited light is emitted from the light outlet of the packaging shell through the reflecting layer. The invention has simple structure and can obtain laser beams with the color temperature around the faculae consistent with that of the center.

Description

Reflection type excitation lighting device
Technical Field
The invention relates to the technical field of optics, in particular to a reflective excitation lighting device.
Background
Laser light source has energy concentration, advantages such as collimation nature is good, through the light beam plastic, can form the extremely high pointolite of energy density, the white light source that the fluorescence potsherd formed is aroused behind the laser pointolite through diffusion lens to the laser pointolite, can design the great laser lighting lamp of beam divergence angle, however because laser is the gaussian beam, energy is high in the middle of the beam, both sides energy is low, even through diffusion lens, with laser light source's light divergence, laser beam's central energy still is very high, the laser that leads to the center is not fully absorbed by ceramic fluorescence piece and the facula mid portion colour temperature is high, the condition that the colour temperature is low all around.
Utility model CN201520933480.7 discloses a lighting device based on laser light source, and specifically discloses that the device comprises a laser light source which is arranged at the front end of a diffusion lens, the laser light source comprises a driving circuit board and a laser emitting head, the laser emitting head emits laser light and is injected into the diffusion lens; a diffusion lens for diffusing the incident laser light into a uniform circular beam; and the fluorescent powder layer is arranged at the rear end of the diffusion lens and is used for realizing frequency spectrum change of the passing laser and forming normal illumination light. The device fails to solve the problem of inconsistent color temperature around the spot with the center.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a reflective excitation lighting device which is simple in structure and can obtain laser beams with the color temperature around light spots consistent with that of the center.
The invention is realized by the following technical scheme:
a reflection-type excitation lighting device comprises a laser light source, a transmission optical fiber, a reflection cup, a diffusion lens, a fluorescent sheet and a reflection layer; the reflection cup, the fluorescent sheet and the reflection layer are arranged in the packaging shell; the front end of the reflecting cup is used for fixing a bare core plug at one end of a transmission optical fiber, the rear end of the reflecting cup is used for fixing a diffusion lens, and the light-emitting surface of the diffusion lens is flush with the surface of the rear end of the reflecting cup; the reflecting layer is obliquely arranged in the packaging shell, and the fluorescent sheet is obliquely arranged in the packaging shell and is arranged on the incident surface of the reflecting layer; laser emitted by the laser source sequentially passes through the diffusion lens and the fluorescent sheet through the transmission optical fiber to reach the reflecting layer, and the excited light is emitted from the light outlet of the packaging shell through the reflecting layer.
Laser is transmitted through optical fiber coupling, and the small-angle laser is diffused through the diffusion lens, so that the power density is reduced, and then the small-angle laser is excited through the fluorescent sheet on the incident surface of the reflecting layer and reaches the reflecting layer, and the excited light is emitted out of the packaging structure from the light outlet of the packaging shell through mirror reflection. The invention disperses the central energy of the laser through the reflection at different angles, so that the color temperature around the facula is consistent with that of the center.
Preferably, the inclination angles of the reflecting layer and the fluorescent sheet are both 45 degrees.
Preferably, the reflecting cup comprises an inverted frustum structure with a hollow upper part and a cylindrical structure with a hollow lower part; the diffusion lens is arranged in the inverted circular truncated cone structure, and the side surface of the diffusion lens is attached to the inner side surface of the inverted circular truncated cone structure; the bare ferrule head is fixed in the lower cylindrical structure.
Preferably, when the reflecting layer is inclined to the right, the light outlet is arranged on the upper side of the packaging shell; or when the reflecting layer inclines to the left, the light outlet is arranged at the lower layer of the packaging shell.
A reflection-type excitation lighting device comprises a laser light source, a transmission optical fiber, a reflection cup, a diffusion lens, a fluorescent sheet and a reflection layer; the reflection cup, the fluorescent sheet and the reflection layer are arranged in the packaging shell; the front end of the reflecting cup is used for fixing a bare core plug at one end of a transmission optical fiber, the rear end of the reflecting cup is used for fixing a diffusion lens, and the light-emitting surface of the diffusion lens is flush with the surface of the rear end of the reflecting cup; the fluorescent sheet is parallel to the light-emitting surface of the diffusion lens; the reflecting layer is obliquely arranged in the packaging shell; laser emitted by the laser source sequentially passes through the diffusion lens and the fluorescent sheet through the transmission optical fiber to reach the reflecting layer, and the excited light is emitted from the light outlet of the packaging shell through the reflecting layer.
Laser is transmitted through optical fiber coupling, passes through the diffusion lens, diffuses small-angle laser, reduces power density, is excited through the fluorescent sheet, reaches the reflecting layer, and the excited light is emitted to the outside of the packaging structure from the light outlet of the packaging shell through mirror reflection. The invention disperses the central energy of the laser through the reflection at different angles, so that the color temperature around the facula is consistent with that of the center.
Preferably, the fluorescent sheet is disposed on a light emitting surface of the diffusion lens.
Preferably, the inclination angle of the reflecting layer is 30-75 degrees.
Preferably, the reflecting cup comprises an inverted frustum structure with a hollow upper part and a cylindrical structure with a hollow lower part; the diffusion lens is arranged in the inverted circular truncated cone structure, and the side surface of the diffusion lens is attached to the inner side surface of the inverted circular truncated cone structure; the bare ferrule head is fixed in the lower cylindrical structure.
Preferably, when the reflecting layer is inclined to the right, the light outlet is arranged on the upper side of the packaging shell; or when the reflecting layer inclines to the left, the light outlet is arranged at the lower layer of the packaging shell.
The invention has the following beneficial effects:
a reflective excitation lighting device is simple in structure, and can disperse the central energy of laser through reflection at different angles, so that the color temperature around a light spot is consistent with that of the center; in addition, the reflective lighting mode is beneficial to transmitting more white light to the light sensing chip by reflecting the white light in the fiber, and the requirement on the electronic part is reduced.
Drawings
FIG. 1 is a block diagram of an embodiment of a reflective excitation lighting apparatus according to the present invention;
FIG. 2 is a block diagram of another embodiment of a reflectively excited illumination device according to the present invention;
fig. 3 is a schematic structural diagram of the reflector cup in fig. 1 or 2.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Referring to fig. 1, a reflective excitation lighting device includes a laser light source 0, a transmission fiber 1, a reflective cup 3, a diffusion lens 2, a fluorescent sheet 4, and a reflective layer 5. The reflection cup 3, the fluorescent sheet 4 and the reflection layer 5 are arranged in the packaging shell 6. The front end of the reflection cup 3 is used for fixing a bare core plug at one end of the transmission optical fiber 1, the rear end of the reflection cup 3 is used for fixing the diffusion lens 2, and the light-emitting surface of the diffusion lens 2 is flush with the surface of the rear end of the reflection cup 3. The reflecting layer 5 is obliquely arranged in the packaging shell 6, and the fluorescent sheet 4 is obliquely arranged in the packaging shell 6 and is arranged on the incident surface of the reflecting layer 5. Laser emitted by the laser source sequentially passes through the diffusion lens and the fluorescent sheet through the transmission optical fiber to reach the reflecting layer, and the excited light is emitted from the light outlet of the packaging shell through the reflecting layer.
The laser light source is one of a solid laser, a gas laser, a semiconductor laser and a fiber laser. The light source is a light source which is converged in the tail end of the structural part after the laser light source is shaped by a designed lens (group).
The transmission optical fiber is a multimode optical fiber. In order to avoid total reflection of the end face of the optical fiber, the end face of the optical fiber is manufactured by a grinding and polishing method, the fiber core of the optical fiber is left after a protective layer (a plastic coating layer) is stripped, the fiber core is inserted into a ceramic sleeve for dispensing and fixing, then the bare ferrule optical fiber is obtained finally after mould processing and grinding and polishing, namely, the bare ferrule optical fiber is fixed at one end in a reflecting cup.
As shown in fig. 3, the reflector cup 3 includes an upper hollow inverted frustum structure and a lower hollow cylindrical structure. The inner size and the side gradient of the reflection cup are just attached to the side surface of the optical fiber bare insertion core and the side surface of the lens, and the reflection cup is used for fixing the bare insertion core head and the diffusion lens. The side surface of the diffusion lens is attached to the inner side surface of the inverted circular truncated cone structure, and the diffusion lens 2 is arranged in the inverted circular truncated cone structure. The bare ferrule head is fixed in the lower cylindrical structure. The gap between the diffusion lens and the reflector cup is filled with a silicone-based substance.
The fluorescent sheet 4 is tightly attached to the reflective layer 5 without contacting the diffusion lens 2, is obliquely disposed on the right side of the light emitting end, and is fixed to the package case 6. The fluorescent sheet is obliquely arranged in the packaging shell and attached to the incident surface of the reflecting layer. Such as attaching a fluorescent sheet to the reflective layer. Preferably, the inclination angles of the reflecting layer and the fluorescent sheet are both 45 degrees.
The reflecting layer is obliquely arranged in the packaging shell, and if an inclined plane platform is arranged in the packaging shell, the reflecting layer is detachably fixed on the inclined plane. When the reflecting layer is inclined to the right (refer to fig. 1), the light outlet is arranged on the upper side of the packaging shell; or when the reflecting layer inclines to the left, the light outlet is arranged at the lower layer of the packaging shell. The light outlet on the side surface of the packaging shell is changed at any time according to the inclination angle of the reflecting layer.
Fig. 2 shows another embodiment, and a reflection type excitation illumination device includes a laser light source 0, a transmission optical fiber 1, a reflection cup 3, a diffusion lens 2, a fluorescent sheet 4, and a reflection layer 5. The reflection cup 3, the fluorescent sheet 4 and the reflection layer 5 are arranged in the packaging shell 6. The front end of the reflection cup 3 is used for fixing a bare core plug at one end of the transmission optical fiber 3, the rear end of the reflection cup 3 is used for fixing the diffusion lens 2, and the light-emitting surface of the diffusion lens 2 is flush with the surface of the rear end of the reflection cup 3. The fluorescent sheet 4 is parallel to the light-emitting surface of the diffusion lens 2. The reflecting layer 5 is obliquely arranged in the packaging shell 6. Laser emitted by the laser source sequentially passes through the diffusion lens and the fluorescent sheet through the transmission optical fiber to reach the reflecting layer, and the excited light is emitted from the light outlet of the packaging shell through the reflecting layer.
The laser light source is one of a solid laser, a gas laser, a semiconductor laser and a fiber laser. The light source is a light source which is converged in the tail end of the structural part after the laser light source is shaped by a designed lens (group).
The transmission optical fiber is a multimode optical fiber. In order to avoid total reflection of the end face of the optical fiber, the end face of the optical fiber is manufactured by a grinding and polishing method, the fiber core of the optical fiber is left after a protective layer (a plastic coating layer) is stripped, the fiber core is inserted into a ceramic sleeve for dispensing and fixing, then the bare ferrule optical fiber is obtained finally after mould processing and grinding and polishing, namely, the bare ferrule optical fiber is fixed at one end in a reflecting cup.
As shown in fig. 3, the reflector cup 3 includes an upper hollow inverted frustum structure and a lower hollow cylindrical structure. The inner size and the side gradient of the reflection cup are just attached to the side surface of the optical fiber bare insertion core and the side surface of the lens, and the reflection cup is used for fixing the bare insertion core head and the diffusion lens. The side surface of the diffusion lens is attached to the inner side surface of the inverted circular truncated cone structure, and the diffusion lens 2 is arranged in the inverted circular truncated cone structure. The bare ferrule head is fixed in the lower cylindrical structure. The gap between the diffusion lens and the reflector cup is filled with a silicone-based substance.
The fluorescent sheet 4 is arranged on the light-emitting surface of the diffusion lens. The fluorescent sheet is adhered to the light-emitting surface of the diffusion lens.
The reflecting layer is obliquely arranged in the packaging shell, and if an inclined plane platform is arranged in the packaging shell, the reflecting layer is detachably fixed on the inclined plane. When the reflecting layer is inclined to the right (refer to fig. 2), the light outlet is arranged on the upper side of the packaging shell; or when the reflecting layer inclines to the left, the light outlet is arranged at the lower layer of the packaging shell. The light outlet on the side surface of the packaging shell is changed at any time according to the inclination angle of the reflecting layer. The inclination angle of the reflecting layer is 30-75 degrees, preferably 45 degrees.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims (10)

1. A reflection-type excitation lighting device is characterized by comprising a laser light source, a transmission optical fiber, a reflecting cup, a diffusion lens, a fluorescent sheet and a reflecting layer; the reflection cup, the fluorescent sheet and the reflection layer are arranged in the packaging shell; the front end of the reflecting cup is used for fixing a bare core plug at one end of a transmission optical fiber, the rear end of the reflecting cup is used for fixing a diffusion lens, and the light-emitting surface of the diffusion lens is flush with the surface of the rear end of the reflecting cup; the reflecting layer is obliquely arranged in the packaging shell, and the fluorescent sheet is obliquely arranged in the packaging shell and is arranged on the incident surface of the reflecting layer; laser emitted by the laser source sequentially passes through the diffusion lens and the fluorescent sheet through the transmission optical fiber to reach the reflecting layer, and the excited light is emitted from the light outlet of the packaging shell through the reflecting layer.
2. The reflectively excited illumination device of claim 1, wherein the reflective layer and the phosphor sheet are both tilted at an angle of 45 degrees.
3. A reflectively excited illumination device as claimed in claim 1, wherein the reflector cup comprises an upper hollow inverted frustum structure and a lower hollow cylindrical structure; the diffusion lens is arranged in the inverted circular truncated cone structure, and the side surface of the diffusion lens is attached to the inner side surface of the inverted circular truncated cone structure; the bare ferrule head is fixed in the lower cylindrical structure.
4. The reflectively-excited illumination device of claim 1, wherein the light exit port is disposed on the top side of the package housing when the reflective layer is tilted to the right; or when the reflecting layer inclines to the left, the light outlet is arranged at the lower layer of the packaging shell.
5. A reflection-type excitation lighting device is characterized by comprising a laser light source, a transmission optical fiber, a reflecting cup, a diffusion lens, a fluorescent sheet and a reflecting layer; the reflection cup, the fluorescent sheet and the reflection layer are arranged in the packaging shell; the front end of the reflecting cup is used for fixing a bare core plug at one end of a transmission optical fiber, the rear end of the reflecting cup is used for fixing a diffusion lens, and the light-emitting surface of the diffusion lens is flush with the surface of the rear end of the reflecting cup; the fluorescent sheet is parallel to the light-emitting surface of the diffusion lens; the reflecting layer is obliquely arranged in the packaging shell; laser emitted by the laser source sequentially passes through the diffusion lens and the fluorescent sheet through the transmission optical fiber to reach the reflecting layer, and the excited light is emitted from the light outlet of the packaging shell through the reflecting layer.
6. The reflectively excited illumination device of claim 5, wherein the phosphor patch is disposed on the exit surface of the diffuser lens.
7. The reflectively excited illumination device of claim 5, wherein the reflective layer is tilted at an angle of 30-75 degrees.
8. A reflectively excited illumination device as claimed in claim 5, wherein the reflector cup comprises an upper hollow rounded frustum structure and a lower hollow cylindrical structure; the diffusion lens is arranged in the inverted circular truncated cone structure, and the side surface of the diffusion lens is attached to the inner side surface of the inverted circular truncated cone structure; the bare ferrule head is fixed in the lower cylindrical structure.
9. The reflectively-excited illumination device of claim 5, wherein the light exit port is disposed on the top side of the package housing when the reflective layer is tilted to the right; or when the reflecting layer inclines to the left, the light outlet is arranged at the lower layer of the packaging shell.
10. The reflectively excited illumination device of claim 5, wherein the bare core plug of the transmission fiber is fixed to the reflector cup after it is inserted into the ceramic sleeve and glued.
CN202011537663.9A 2020-12-23 2020-12-23 Reflection type excitation lighting device Pending CN112460505A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011537663.9A CN112460505A (en) 2020-12-23 2020-12-23 Reflection type excitation lighting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011537663.9A CN112460505A (en) 2020-12-23 2020-12-23 Reflection type excitation lighting device

Publications (1)

Publication Number Publication Date
CN112460505A true CN112460505A (en) 2021-03-09

Family

ID=74803731

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011537663.9A Pending CN112460505A (en) 2020-12-23 2020-12-23 Reflection type excitation lighting device

Country Status (1)

Country Link
CN (1) CN112460505A (en)

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