CN207752250U - A kind of diode laser array light source - Google Patents
A kind of diode laser array light source Download PDFInfo
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- CN207752250U CN207752250U CN201721798028.XU CN201721798028U CN207752250U CN 207752250 U CN207752250 U CN 207752250U CN 201721798028 U CN201721798028 U CN 201721798028U CN 207752250 U CN207752250 U CN 207752250U
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- heat sink
- diode laser
- laser
- balancing device
- cylindrical lens
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Abstract
The utility model is a kind of diode laser array light source, N number of diode laser and its aspheric collimation lens are embedded in N number of mounting hole of metal heat sink one by one, cylindrical lens is located at each hole top surface, it is opposite with a set of diode laser and aspheric collimation lens, constitute N number of Laser emission optics monomer.The light balancing device being made of irregular countless lenticules there are one matching in the top surface of metal heat sink.The N beams laser that N number of Laser emission optics monomer is sent out forms the laser beam with the specific angle of divergence after the light balancing device, and a power >=6w is formed in 1~10 meter of far field；The high even bright hot spot of uniformity >=90%.The light balancing device of the utility model is simple, and efficiency of transmission is high；Output facula uniformity is good, no blackening；Not high to incident beam quality requirement, wave-length coverage is wide.
Description
Technical field
The utility model is related to laser optoelectronic technical field, specially a kind of diode laser array light source.
Background technology
With the development of diode laser technology, multiple fields have been applied to it, and to the requirement of laser optical power
It is higher and higher.Such as, in the material evidence search process that criminal investigation skill detects field, in order to improve biological material excite fluorescence intensity and
Contrast needs to be excited using the laser of higher power.The method of acquisition high power laser light is common at present following 3 kinds：
1, the output power of single diode laser is improved；2, using single diode laser array；3, using multiple optical fiber couplings
The diode laser of conjunction closes beam.Method 1 requires diode laser device to have new development, output power to have carrying for essence
Height is difficult to realize in a short time, too low by cost performance from the point of view of R ＆ D Cost.Method 2 uses single diode laser array
Require high, traditional water-cooling structure complicated cooling device, volume is necessarily large and bulky, while of high cost.More than 3 a diode of method swashs
The laser that light device is sent out closes beam through fiber coupling and obtains high-power laser beam, and operation and maintenance is convenient, but the life of related facility
The requirement of production. art is high, therefore of high cost, and transmission efficiency is low, and overall volume is difficult to install and use greatly.
For this purpose, present applicant has proposed the patent application of " a kind of multiple diode laser array encapsulating structures ", this side
The N number of diode laser of case and its aspheric collimation lens are embedded in N number of mounting hole of metal heat sink one by one, and cylindrical lens is located at
Each hole top surface, it is opposite with a set of diode laser and aspheric collimation lens, constitute a Laser emission optics monomer.The envelope
Assembling structure output power is the sum of N number of diode laser power, and it is small to ensure that the combination of multiple Laser emission optics monomers has
The angle of divergence and the depth of parallelism；Cooling device is simple, and laser transmission is efficient, small.But the uniformity of light beam can not ensure.
With advances in technology, each field does not require nothing more than laser optical power height, also requires to improve the equal of laser beam spot
Even property.As the biological material that criminal investigation skill detects field needs could suitably exciting sample fluorescence using high power and uniform laser
Intensity and contrast, to obtain accurate result.
Common methods and the defect for obtaining uniform laser hot spot at present are as follows：
A, using frosted glass diffusion sheet or opal diffusion sheet；Transmission efficiency is low, and hot spot lack of homogeneity is especially adopted
It is become apparent from defect when laser light source；
B, using diffraction holographic grating；Its efficiency of transmission can reach 90%, but the even light effect of the laser beam penetrated
Difference；
C, it is combined using microlens array；System complex, it is of high cost, and uniform light spots can only be obtained on focal plane；
D, using lamp guide or liquid light guide pipe；High uniformity, but system complex, the production technology of related facility are wanted
Ask high, and transmission efficiency is low.
In short, being not yet provided with high even light laser light beam while light supply apparatus at low cost, convenient for practicality at present.
Utility model content
The purpose of this utility model is to provide a kind of diode laser array light source, N number of diode laser and its non-
Spherical surface collimation lens is embedded in N number of mounting hole of metal heat sink one by one, and cylindrical lens is located at each hole top surface, is swashed with a set of diode
Light device and aspheric collimation lens are opposite, constitute N number of Laser emission optics monomer.By not there are one matching in the top surface of metal heat sink
The light balancing device that the countless lenticules of rule are constituted.The laser beam that N number of Laser emission optics monomer is sent out passes through the light balancing device
Afterwards, the laser beam with the specific angle of divergence is formed, the laser beam of this light source output is even bright in far field one height of formation
Hot spot.The light balancing device of the utility model is simple, and efficiency of transmission is high；Output facula uniformity is good, no blackening；To incident beam matter
Measure of less demanding, wave-length coverage is wide.
A kind of diode laser array light source of the utility model design includes N number of diode laser, and N is 3 to 20
Integer.Each diode laser is matched there are one aspheric collimation lens and a cylindrical lens, and a laser hair is formed
Penetrate optics monomer.Metal it is heat sink on have and the matched uniformly distributed N number of mounting hole of diode laser, the center line in N number of hole
It is mutually parallel, N number of diode laser and its aspheric collimation lens are embedded in one by one in heat sink N number of mounting hole, cylindrical lens
Positioned at heat sink upper surface, each cylindrical lens is opposite with a set of diode laser and aspheric collimation lens.N number of Laser emission
The depth of parallelism≤0.1mrad between the optical axis of optics monomer.A piece shape light balancing device is fixed at the top of N number of cylindrical lens, it is even
The piece shape plane of optical device is vertical with each optical axis of Laser emission optics monomer, and the N beam laser of N number of Laser emission optics monomer hangs down
It is directly radiated on the light balancing device, the laser beam of output forms a power >=6w in 1~10 meter of far field；Uniformity >=90%
The even light spot of height.
The light balancing device is the microlens array sheet of random arrangement, and light balancing device includes the substrate and substrate one of piece shape
The etch layer of the etch layer of side, transparent plain film substrate side is that multiple diameters of laser ablation formation and radius of curvature differ
The random arrangement of lenticule microlens array.The etch layer of substrate is towards each cylindrical lens top surface.
The angle of divergence of diode laser emission laser beam, laser beam both direction is consistent or is inconsistent.
Laser beam is collimated by aspheric collimation lens, while compressing the beam divergence angle of both direction；Then laser beam
Collimated using cylindrical lens, then the one of direction of second compression beam divergence angle.By the light twice of two lens
Beam collimates, and the laser beam divergent angle that Laser emission optics monomer is sent out is less than milliradian (mrad) magnitude.Each Laser emission light
Learn the depth of parallelism≤0.1mrad between monomer.By above-mentioned light balancing device after each Laser emission optics monomer, formed with specific
One laser beam of the angle of divergence finally exports an even bright hot spot in 1~10 meter of far field.
The heat sink of the metal is the good silver of heat conduction or copper or Aluminum Heat Sink.
N number of Laser emission optics monomer all same.
The top of the aspheric collimation lens is aspherical convex lens, and bottom is the identical cylindrical lens of diameter, straight
Diameter is more than diode laser outer diameter, and optical axis is overlapped with the laser beam center of diode laser.
The cylindrical lens top surface is convex surface, former and later two sides are mutually parallel, and two sides in left and right are mutually parallel, and
All around four sides are each perpendicular to bottom surface, and bottom surface is rectangular planes, are placed in heat sink upper surface, are pressed in heatsink mounting hole
On, rectangular length is the 6/5 to 4/3 of the aperture of heatsink mounting hole, and width is the 2/3 to 4/5 of heatsink mounting hole aperture,
The optical axis extended line of aspheric collimation lens is perpendicular through square cylindrical lens rectangular central thereon.
The diameter of the light balancing device is more than N number of external diameter of a circle in cylindrical lens top surface, and the thickness of light balancing device is less than
Or it is equal to 2mm.Light balancing device is 1mm~15mm at a distance from cylindrical lens top surface.
The center line of the affixed vertical ring in heat sink top surface, vertical ring is overlapped with heat sink center line, and it is more saturating than cylinder to found ring upper edge
High 3mm~the 25mm in top surface of mirror, inner ring surface are step surface, and the internal diameter in lower inner ring face is less than light balancing device outer diameter, is more than or waits
It is more than light balancing device outer diameter in the internal diameter of N number of external diameter of a circle in cylindrical lens top surface, upper inner ring face.Light balancing device is placed in vertical ring
Lower inner ring face step on, and be fixed in the vertical ring at heat sink top.
Have a screw thread in the upper inner ring face of vertical ring, the height of trim ring is less than the height in upper inner ring face, the outer wall of trim ring have screw thread,
It is matched with the screw thread in upper inner ring face, the internal diameter of trim ring is greater than or equal to N number of external diameter of a circle in cylindrical lens top surface.Trim ring revolves
The upper inner ring face for entering heat sink vertical ring, tightens the even bright device on the step for pushing down the lower inner ring face for being placed in vertical ring, and the top of trim ring is low
Vertical ring upper edge in heat sink top.
Compared with prior art, a kind of the utility model diode laser array light source has the beneficial effect that：1, its is defeated
It is the sum of N number of diode laser power to go out power, provides the high power laser light for meeting and needing；The lenticule battle array of random arrangement
The light balancing device of column-slice, each lenticule are a scattering centers, and collimated light beam is multiple micro- by irregular random distribution
Mirror eliminates diffraction, and the influence of incident beam variation is small, generates with the specific angle of divergence, contoured (round, rectangular or line
Shape etc.) uniform laser light beam, avoid zero level speck, 1~10m far field obtain an even light spot；2 and light balancing device
Using frosted glass diffusion sheet, opal diffusion sheet, diffraction holographic grating efficiency of transmission either lamp guide or liquid light guide pipe
Light source compare, uniformity >=90% of this light source in far-field spot；3, cooling device is simple, does not need complicated cooling by water
Device；It is small, it is portable, and packaging technology is simple, and it is at low cost；4, laser transmits efficient, efficiency of transmission >=90%；To two
Pole pipe laser beam quality is of less demanding, and wave-length coverage is wide, application easy to spread.
Description of the drawings
The cross-sectional view of Fig. 1 this diode laser array light source embodiments；
The vertical view of the diode laser array of Fig. 2 this diode laser array light source embodiments；
The microlens array enlarged diagram of light balancing device in Fig. 3 Fig. 1；
The optical system schematic diagram of Fig. 4 this diode laser array light source embodiments；
The specific profile line spot schematic diagram of Fig. 5 this diode laser array light source embodiments；
The specific profile square focus spot schematic diagram of Fig. 6 this diode laser array light source embodiments；
The specific profile circular light spot schematic diagram of Fig. 7 this diode laser array light source embodiments.
Figure label is:
1, heat sink, 2, diode laser, 3, aspheric collimation lens, 4, cylindrical lens, 5, light balancing device, 6, vertical ring,
7, trim ring, 8, clamping piece, 9, trim ring ring, 10, pin.
Specific implementation mode
The present embodiment diode laser array light source is as illustrated in fig. 1 and 2, and copper is heat sink 1 to have 6 mounting holes, wherein one
A mounting hole is in center, remaining 5 mounting hole is uniformly distributed in a radius centered on the mounting hole at center and is
On the circumference of 25mm.The hole wall spacing of each mounting hole and the spacing of each mounting hole and heat sink outer wall are more than 2.5mm.In each hole
Heart line is mutually parallel.
Heat sink 1 each mounting hole is stepped hole, and lower bore dia is matched with 2 outer diameter of diode laser, aperture 4mm, on
Hole aperture 5mm, it is matched with aspheric collimation lens 3, upper hole hole wall has screw thread.
6 diode lasers 2 are embedded in heat sink 1 lower opening of 6 mounting holes one by one, pass through viscose glue and heat sink 1 peace
Dress hole inner wall is fixedly connected, and the pin 10 of diode laser 2 is connect through mounting hole bottom with power cord, this example diode laser
2 bottom of device is 0 with heat sink 1 bottom surface distance.
6 aspheric collimation lens 3 are embedded in the upper hole of each mounting hole, are placed on the step of lower opening one by one；This example
3 top of aspheric collimation lens is aspherical convex lens, and bottom is the identical cylindrical lens of diameter, and this example its diameter 5mm is more than
2 outer diameter of diode laser, optical axis are overlapped with the laser beam center of diode laser 2.Trim ring ring 9 is becket, ring
Height be less than upper hole depth, the internal diameter of ring is less than the outer diameter of aspheric collimation lens 3, and the outer wall of trim ring ring 9 has screw thread, with heat
The screw thread of hole inner wall matches on heavy 1 mounting hole, and trim ring ring 9 screws in hole on heat sink 1 mounting hole, tightens and pushes down aspherical collimation
The top of lens 3, trim ring ring 9 is less than heat sink 1 upper surface.Aspheric collimation lens 3 fix after, 3 bottom of aspheric collimation lens with
The spacing at 2 top of diode laser is 2mm, and 3 top of aspheric collimation lens and the spacing on heat sink 1 surface are 3mm.
6 cylindrical lenses 4 are located on each mounting hole of heat sink 1 upper surface, each cylindrical lens 4 and a set of diode laser
Device 2 and aspheric collimation lens 3 are opposite.One diode laser, 2, aspheric collimation lens 3 and a cylinder are saturating
Mirror 4 forms a Laser emission optics monomer.6 Laser emission optics monomer all sames of this example, and 6 Laser emission optics
The depth of parallelism≤0.1mrad of monomer optical axis.
4 top surface of this example cylindrical lens is convex surface, former and later two sides are mutually parallel, and two sides in left and right are mutually parallel,
And all around four sides are each perpendicular to bottom surface, bottom surface is that rectangular planes are placed in heat sink 1 upper surface, are pressed in heat sink 1 installation
Kong Shang, rectangular length are 6mm, and the optical axis extended line of width 4mm, aspheric collimation lens 3 are saturating perpendicular through cylinder
4 rectangular bottom surface center of mirror.
It is radial placement, the i.e. length of its rectangular bottom surface that this example, which is in 5 cylindrical lenses 4 on the mounting hole of heat sink 1 periphery,
Center line intersects at center mounting hole center；The long center line of 4 rectangular bottom surface of cylindrical lens on center mounting hole be in
The long center line of one 4 rectangular bottom surface of cylindrical lens of periphery is in line.
With a pair of clamping piece 8 being mutually parallel, clamping piece 8 is and heat sink 1 material identical for heat sink 1 top surface, each mounting hole
Copper sheet, be fixedly connected, vertically erected in mounting hole peritreme both sides with heat sink 1,8 spacing of a pair of of clamping piece is the length of cylindrical lens 4,
Cylindrical lens 4 is stuck between a pair of of clamping piece 8, and two smaller opposite sides and the clamping piece 8 of cylindrical lens 4 bond admittedly
It is fixed.
As shown in Figure 1, the affixed vertical ring 6 identical with its material in heat sink 1 top surface of this example, founds the center line and heat sink 1 of ring 6
Center line overlaps, and 1 upper edge of vertical ring is higher 20mm than the top surface of cylindrical lens, and inner ring surface is step surface, and the internal diameter in lower inner ring face is small
In 5 outer diameter of light balancing device, it is more than 6 external diameter of a circles in cylindrical lens top surface, the internal diameter in upper inner ring face is more than outside light balancing device 5
Diameter.Light balancing device 5 is placed on the step in lower inner ring face of vertical ring 6.
There are screw thread, the height of trim ring 7 to be less than the height in upper inner ring face in the upper inner ring face of vertical ring 6, the outer wall of trim ring 7 has spiral shell
Line is matched with the screw thread in upper inner ring face, and the internal diameter of trim ring 7 is more than 6 external diameter of a circles in 4 top surface of cylindrical lens.Trim ring 7 revolves
The even bright device 5 on the step for pushing down the lower inner ring face for being placed in vertical ring 7 is tightened in the upper inner ring face for entering heat sink 1 vertical ring 6, trim ring 7
Vertical ring 7 upper edge of the top less than heat sink 1 top.
This example light balancing device is the microlens array sheet of random arrangement, and light balancing device 5 includes the substrate and substrate of piece shape
The etch layer of side, the etch layer of transparent plain film substrate side are multiple diameters that laser ablation is formed and radius of curvature not phase
The microlens array of the same random arrangement of lenticule, as shown in Figure 3.The etch layer of substrate is towards 4 top surface of each cylindrical lens.
This example powers to diode laser 2 by pin 10.The light path of this csr optical system is as shown in figure 4, diode
Laser 2 emits laser beam, and the angle of divergence of laser beam both direction is consistent or inconsistent.Laser beam passes through aspheric
Face collimation lens 3 is collimated, while compressing the beam divergence angle of both direction；Then laser beam is using cylindrical lens 4
Collimated, then the one of direction of second compression beam divergence angle.By beam collimation twice, obtains the whole angle of divergence and be less than
The laser beam of milliradian magnitude.The piece shape plane of light balancing device 5 is vertical with each optical axis of Laser emission optics monomer, and 6 are swashed
The N beam laser beam vertical irradiations of light emitting optics monomer the random arrangement of the light balancing device 5 microlens array on piece, often
A lenticule is a scattering center, and multiple lenticules of the collimated light beam Jing Guo irregular random distribution eliminate diffraction, generation
Uniform laser light beam avoids zero level speck, and power >=6w is obtained in the far field of 1~10m；One even light of uniformity >=90%
Spot.
Irregular microlens array using each different lenticules of Computer Simulation statistical analysis light direction and hair
Angle is dissipated, finally show that far-field spot is distributed, i.e., with the specific angle of divergence, circle, rectangular or the contoureds such as linear hot spot.
The parameter obtained according to Computer Simulation is exposed plain film substrate side, the laser etching process such as photoetching, forms etch layer
Upper specific multiple diameters and the different microlens array of radius of curvature, make collimated light beam pass through some irregular lenticule battle array
Row obtain the even light spot of the specific angle of divergence, contoured, and Fig. 5 to 7 is respectively that the present embodiment installs additional obtained by different light balancing devices
Linear (0.4 ° × 100 ° of the angle of divergence), rectangular (20 ° × 20 ° of the angle of divergence) and round (20 ° of the angle of divergence) hot spot.
To illustrate the protrusion effect of the present embodiment, using identical diode laser array, with different light balancing devices
As a comparison case, the hot spot in efficiency of transmission and 5 far fields meter Chu is detected.
Comparative example 1
Any light balancing device is not used.
6 hot spots in 5 far fields meter Chu are consistent with the layout of cylindrical lens, and the uniformity of each hot spot is in typical Gauss light
Beam is distributed.
Comparative example 2
Frosted glass diffusion sheet or opal diffusion sheet are installed in heat sink top surface.
There are direct even light effect, 6 facula areas in 5 far fields meter Chu to be all higher than cylindrical lens cross section, hot spot is mutual
Overlapping.
Comparative example 3
Diffraction holographic grating is installed in heat sink top surface.
Have direct even light effect, adjust diffraction holographic grating can generate with the specific angle of divergence, contoured (it is round,
Ellipse or threadiness etc.) laser beam, but efficiency of transmission is relatively low, in uniformity >=70% of the hot spot in 5 far fields meter Chu,
For naked eyes still it can be seen that bright among hot spot, edge is dark.
Comparative example 4
It is combined in the microlens array of heat sink top surface installation rule.
There is direct even light effect, efficiency of transmission and hot spot uniformity are close with the present embodiment, but can only be in focal plane
Obtain uniform light spots.
Comparative example 5
Lamp guide can not be installed directly at the top of each cylindrical lens or liquid light guide pipe carries out even light.It needs each two
Optical fiber is coupled in pole pipe laser, then is coupled into lamp guide or liquid light guide pipe.The efficiency of transmission of gained device light is less than
70%.Hot spot uniformity is fine, reaches 95% or more.But mounting process is complicated, and device volume is big.
The present embodiment and comparative example carry out even light on identical diode laser array, using different light balancing devices
Effect compares, and experimental result is as shown in table 1.
1 identical diode laser array of table, using the even light effect comparison sheet of different light balancing devices
By the comparative example using different existing other light balancing devices as it can be seen that only the present embodiment is using random arrangement
Microlens array sheet could realize efficiency of transmission >=90%, form the specific angle of divergence, and the uniformity of contoured (does not have up to 90%
Have zero level speck, i.e., spot center is without especially bright speck) far-field spot, and to the beam quality of incident light require not
Height does not need angle of divergence collimation and reaches mrad magnitudes, do not need unpolarized light beam quality close to diffraction limit, multimode Gauss light
Beam can also make light source.
Above-described embodiment is only further described the purpose of this utility model, technical solution and advantageous effect
Specific case, the utility model are not limited to this.All any modifications made within the scope of disclosure of the utility model,
Equivalent replacement, improvement etc., are all contained within the scope of protection of the utility model.
Claims (9)
1. a kind of diode laser array light source, including N number of diode laser (2), the integer that N is 3 to 20；Each two pole
Pipe laser (2) is matched there are one aspheric collimation lens (3) and a cylindrical lens (4), and a Laser emission optics is formed
Monomer；Have on heat sink (1) of metal and the matched uniformly distributed N number of mounting hole of diode laser (2), the center line in N number of hole
It being mutually parallel, N number of diode laser (2) and its aspheric collimation lens (3) are embedded in N number of mounting hole of heat sink (1) one by one,
Cylindrical lens (4) is located at heat sink (1) upper surface, each cylindrical lens (4) and a set of diode laser (2) and aspherical collimation
Lens (3) are opposite；The depth of parallelism≤0.1mrad between the optical axis of N number of Laser emission optics monomer；It is characterized in that：
Fix a piece shape light balancing device (5) at the top of N number of cylindrical lens (4), the piece shape plane of light balancing device (5) with it is each
The optical axis of Laser emission optics monomer is vertical, and the N beam laser vertical irradiations of N number of Laser emission optics monomer are in the light balancing device
(5) on, the laser beam of output forms a power >=6w in 1~10 meter of far field；The hot spot of uniformity >=90%；
The light balancing device (5) is the microlens array sheet of random arrangement, and light balancing device (5) includes the substrate and substrate of piece shape
The etch layer of side, the etch layer of transparent plain film substrate side are multiple diameters that laser ablation is formed and radius of curvature not phase
The microlens array of the same random arrangement of lenticule；The etch layer of substrate is towards each cylindrical lens (4) top surface.
2. diode laser array light source according to claim 1, it is characterised in that：
Heat sink (1) of the metal is that the good silver of heat conduction is heat sink or copper is heat sink or Aluminum Heat Sink.
3. diode laser array light source according to claim 1, it is characterised in that：
N number of Laser emission optics monomer all same.
4. diode laser array light source according to claim 1, it is characterised in that：
The top of the aspheric collimation lens (3) is aspherical convex lens, and bottom is the identical cylindrical lens of diameter, diameter
More than diode laser (2) outer diameter, optical axis is overlapped with the laser beam center of diode laser (2).
5. diode laser array light source according to claim 1, it is characterised in that：
Cylindrical lens (4) top surface is convex surface, former and later two sides are mutually parallel, and two sides in left and right are mutually parallel, and
All around four sides are each perpendicular to bottom surface, and bottom surface is rectangular planes, are placed in heat sink (1) upper surface, are pressed in heat sink (1) peace
It fills on hole, rectangular length is the 6/5 to 4/3 of the aperture of heat sink (1) mounting hole, and width is heat sink (1) mounting hole aperture
2/3 to 4/5, the optical axis extended lines of aspheric collimation lens (3) is perpendicular through square cylindrical lens (4) rectangular central thereon.
6. diode laser array light source according to any one of claim 1 to 5, it is characterised in that：
The diameter of the light balancing device (5) is more than the external diameter of a circle in N number of cylindrical lens (4) top surface, the thickness of light balancing device (5)
Less than or equal to 2mm.
7. diode laser array light source according to claim 6, it is characterised in that：
The light balancing device (5) is 1mm~15mm at a distance from cylindrical lens (4) top surface.
8. diode laser array light source according to claim 7, it is characterised in that：
The center line of the affixed vertical ring (6) in heat sink (1) top surface, vertical ring (6) is overlapped with the center line of heat sink (1), is stood on ring (6)
Edge is higher 3mm~25mm than the top surface of cylindrical lens (4), and inner ring surface is step surface, and the internal diameter in lower inner ring face is less than light balancing device
(5) outer diameter, be greater than or equal to the external diameter of a circle in N number of cylindrical lens (4) top surface, the internal diameter in upper inner ring face is more than light balancing device
(5) outer diameter；Light balancing device (5) is placed on the step in the lower inner ring face of vertical ring (6), and is fixed in the vertical ring at the top of heat sink (1).
9. diode laser array light source according to claim 8, it is characterised in that：
The upper inner ring face of the vertical ring (6) has screw thread, the height of trim ring (7) to be less than the height in upper inner ring face, the outer wall of trim ring (7)
There is screw thread, matched with the screw thread in upper inner ring face, the internal diameter of trim ring (7) is greater than or equal to N number of cylindrical lens (4) top surface circumscribed circle
Diameter；Trim ring (7) screws in the upper inner ring face of heat sink vertical ring, tightens on the step for pushing down the lower inner ring face for being placed in vertical ring (6)
Light balancing device (5), the top of trim ring (7) is less than vertical ring (6) upper edge at the top of heat sink (1).
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| CN107942521A (en) * | 2017-12-21 | 2018-04-20 | 中国电子科技集团公司第三十四研究所 | A kind of diode laser array light source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107942521A (en) * | 2017-12-21 | 2018-04-20 | 中国电子科技集团公司第三十四研究所 | A kind of diode laser array light source |
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