CN206505718U - A kind of DVD laser head - Google Patents
A kind of DVD laser head Download PDFInfo
- Publication number
- CN206505718U CN206505718U CN201720176773.4U CN201720176773U CN206505718U CN 206505718 U CN206505718 U CN 206505718U CN 201720176773 U CN201720176773 U CN 201720176773U CN 206505718 U CN206505718 U CN 206505718U
- Authority
- CN
- China
- Prior art keywords
- mounting groove
- fixed
- laser head
- wiring board
- lens subassembly
- 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.)
- Expired - Fee Related
Links
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- Semiconductor Lasers (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Head (AREA)
Abstract
The utility model provides a kind of DVD laser head, including pedestal, thing lens subassembly, reflective mirror, spectroscope, wiring board, laser diode module, photodiode components and spring clip；The pedestal is provided with buckle, column, the first mounting groove, the second mounting groove, the 3rd mounting groove, the 4th mounting groove and the 5th mounting groove；The thing lens subassembly is provided with upper lid, and the thing lens subassembly is fixed on the first mounting groove, and is carried out by column spacing；The wiring board is positioned by inserting buckle clamping, then is fixed by a screw；The laser diode module is fixed on the second mounting groove by the spring clip；The photodiode components are fixed on the 3rd mounting groove；The spectroscope is fixed on the 4th mounting groove；The reflective mirror is fixed on the 5th mounting groove.The laser head structure for the vehicle-carrying DVD that the utility model is provided is stable, easy for installation.
Description
Technical field
The utility model is related to a kind of DVD laser head.
Background technology
Laser head is the chief component of CD-ROM drive, the read work of main responsible data.Laser head mainly includes：Laser
Generator（Also known as laser diode）, semi reflective prism, object lens, lens and this several part of photodiode.When laser head is read
When taking the data on disc, the laser light half reflection prism sent from laser generator is converged on object lens, and object lens are by laser
Focus on as ultrafine luminous point and get on CD.Now, the reflecting material on CD will will be irradiated the light of coming
Reflect back, through object lens, then be irradiated on half reflection prism.Now, because prism is semi-reflective structure, therefore light will not be allowed
Beam completely penetrates through it and returned on laser generator, but passes through reflection, through lens, reaches above photodiode.By
It is that record data is come with the uneven point of projection in optical disc surface, so the light reflected will the different direction of directive.People
By the signal definition of directive different directions be " 0 " or " 1 ", what light emitting diode was received be those with " 0 ", " 1 " arrangement
Data, and most at last they parse turn into we required for data.Laser head is accurate device, and installation procedure is various,
And requiring accurate, most of part is fixed using screw, and hole position is more, contraposition trouble, and production efficiency is relatively low, and easily goes out
It is wrong.
Utility model content
To solve the above problems, the utility model provides a kind of Stability Analysis of Structures, the laser head of vehicle-carrying DVD easy for installation.
The utility model provides a kind of DVD laser head, including pedestal, thing lens subassembly, reflective mirror, spectroscope, circuit
Plate, laser diode module, photodiode components and spring clip；The pedestal is provided with buckle, column, the first mounting groove, the
Two mounting grooves, the 3rd mounting groove, the 4th mounting groove and the 5th mounting groove, the 4th mounting groove is in the first mounting groove, institute
State the 5th mounting groove to connect with the first mounting groove and the 4th mounting groove, second mounting groove and the 3rd mounting groove are respectively with the 4th
Mounting groove is connected；The thing lens subassembly is provided with upper lid, and the thing lens subassembly is fixed on the first mounting groove, and passes through column
Carry out spacing；Described wiring board one end is spacing by buckle clamping, then is fixed on by a screw on pedestal；The laser two
Pole pipe component is fixed on the second mounting groove by the spring clip；The photodiode components are fixed on the 3rd mounting groove
On；The spectroscope is fixed on the 4th mounting groove；The reflective mirror is fixed on the 5th mounting groove.
In one or more embodiments of the present utility model, the thing lens subassembly be provided with some boss, it is described on
Cover provided with some slotted eyes corresponding with those boss, cover on this and fixed by slotted eye described in the boss clamping.
In one or more embodiments of the present utility model, the column includes two, and thing lens subassembly is located at side by side
One end.
In one or more embodiments of the present utility model, the spring clip is screwed on pedestal, the bullet
Tabletting includes two sections of springs, pushes down laser diode module by the spring and fixes.
In one or more embodiments of the present utility model, the wiring board is provided with data wire interface.
In one or more embodiments of the present utility model, the thing lens subassembly passes through flexible PCB and wiring board
It is electrically connected with.
In one or more embodiments of the present utility model, the laser diode module passes through flexible PCB and line
Road plate is electrically connected with.
In one or more embodiments of the present utility model, the photodiode components pass through flexible PCB and line
Road plate is electrically connected with.
In one or more embodiments of the present utility model, provided with two thermal vias in first mounting groove.
The utility model provides a kind of Stability Analysis of Structures, the laser head of vehicle-carrying DVD easy for installation.Its advantage is：
Wiring board of the present utility model is further fixed by inserting buckle fixed position, then by a screw, easy for installation simple,
Without adjustment position, and existing wiring board is fixed using many screws, and installation steps are cumbersome, and is difficult positioning；It is described
Upper lid is hardly damaged thing lens by being fixed with boss clamping；The laser diode module is consolidated by spring clip
Fixed, convenient disassembly is difficult the bias effect light path caused by running vibrations.
Brief description of the drawings
Fig. 1 is structure decomposition figure of the present utility model.
Fig. 2 is bottom surface structure exploded view of the present utility model.
Fig. 3 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, application scheme is further described：
A kind of DVD laser head, including pedestal 1, thing lens subassembly 2, reflective mirror 3, spectroscope 4, wiring board 5, laser two
Pole pipe component 6, photodiode components 7 and spring clip 8.
The pedestal 1 is provided with buckle 16, column 17, the first mounting groove 11, the second mounting groove 12, the 3rd mounting groove 13, the
Four mounting grooves 14 and the 5th mounting groove 15, first mounting groove 11 are located at the top surface of pedestal 1, second mounting groove 12 and the 5th
Mounting groove 15 is located at the bottom surface of pedestal 1, and the 3rd mounting groove 13 is located at the side of pedestal 1；4th mounting groove 14 is located at first
In mounting groove 11, the 5th mounting groove 15 is connected with the first mounting groove 11 and the 4th mounting groove 14, second mounting groove 12
Connected respectively with the 4th mounting groove 14 with the 3rd mounting groove 13.Further, provided with two radiatings in first mounting groove 11
Through hole 18.
The thing lens subassembly 2 is provided with upper lid 9, and the thing lens subassembly 2 is fixed on the first mounting groove 11, and by vertical
Post 17 carries out spacing.Specifically, the thing lens subassembly 2 is provided with three boss 21, and the upper lid 9 is convex with those provided with three
The corresponding slotted eye 91 of platform 21, lid 9 is fixed by slotted eye 91 described in the clamping of boss 21 on this；The column 17 includes two
Root, is located at one end of thing lens subassembly 2 side by side.
The one end of wiring board 5 is spacing by the clamping of buckle 16 described in the wiring board 5, then is fixed on pedestal by a screw
On.Further, the wiring board 5 is provided with data wire interface 52.
The laser diode module 6 is fixed on the second mounting groove 12 by spring clip 8；Specifically, the spring clip 8
It is screwed on pedestal, the spring clip 8 includes two sections of springs 81, and laser diode module 6 is pushed down by the spring 81
It is fixed.
The photodiode components 7 are fixed on the 3rd mounting groove 13；The spectroscope 4 is fixed on the 4th mounting groove 14
On；The reflective mirror 3 is fixed on the 5th mounting groove 15.
Further, the thing lens subassembly 2, laser diode module 6 and photodiode components 7 pass through flexibility respectively
Circuit board 51 is electrically connected with wiring board 5.
The wiring board 5 of the present embodiment is fixed by buckle 16, then is further fixed by a screw, without using many
Screw repeatedly adjusts contraposition and is fixed, easy for installation simple；The upper lid 9 is difficult by being fixed with the clamping of boss 21
Damage thing lens；The laser diode module 6 is fixed by spring clip 8, convenient disassembly, is difficult caused by running vibrations
Bias effect light path.
It is that above-mentioned preferred embodiment should be regarded as application scheme embodiment for example, all with application scheme thunder
Deduce, replace with, technology that is approximate or making based on this, improving etc., it is regarded as the protection domain of this patent.
Claims (9)
1. a kind of DVD laser head, it is characterised in that including pedestal, thing lens subassembly, reflective mirror, spectroscope, wiring board, swash
Optical diode component, photodiode components and spring clip,
The pedestal is provided with buckle, column, the first mounting groove, the second mounting groove, the 3rd mounting groove, the 4th mounting groove and the 5th peace
Tankage, the 4th mounting groove is in the first mounting groove, and the 5th mounting groove and the first mounting groove and the 4th mounting groove connect
Logical, second mounting groove and the 3rd mounting groove are connected with the 4th mounting groove respectively；
The thing lens subassembly is provided with upper lid, and the thing lens subassembly is fixed on the first mounting groove, and is entered by the column
Row is spacing；
Described wiring board one end is spacing by buckle clamping, then is fixed on by a screw on pedestal；
The laser diode module is fixed on the second mounting groove by the spring clip；
The photodiode components are fixed on the 3rd mounting groove；
The spectroscope is fixed on the 4th mounting groove；
The reflective mirror is fixed on the 5th mounting groove.
2. DVD according to claim 1 laser head, it is characterised in that the thing lens subassembly is provided with some boss,
The upper lid is provided with some slotted eyes corresponding with those boss, covers on this and is fixed by slotted eye described in the boss clamping.
3. DVD according to claim 1 laser head, it is characterised in that the column includes two, is located at thing saturating side by side
One end of mirror assembly.
4. DVD according to claim 1 laser head, it is characterised in that the spring clip is screwed in pedestal
On, the spring clip includes two sections of springs, pushes down laser diode module by the spring and fixes.
5. the laser head of the DVD according to claim 1-4 any one, it is characterised in that the wiring board is provided with number
According to line interface.
6. the laser head of the DVD according to claim 1-4 any one, it is characterised in that the thing lens subassembly passes through
Flexible PCB is electrically connected with wiring board.
7. the laser head of the DVD according to claim 1-4 any one, it is characterised in that the laser diode module
It is electrically connected with by flexible PCB and wiring board.
8. the laser head of the DVD according to claim 1-4 any one, it is characterised in that the photodiode components
It is electrically connected with by flexible PCB and wiring board.
9. the laser head of the DVD according to claim 1-4 any one, it is characterised in that set in first mounting groove
There are two thermal vias.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720176773.4U CN206505718U (en) | 2017-02-25 | 2017-02-25 | A kind of DVD laser head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720176773.4U CN206505718U (en) | 2017-02-25 | 2017-02-25 | A kind of DVD laser head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206505718U true CN206505718U (en) | 2017-09-19 |
Family
ID=59840642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720176773.4U Expired - Fee Related CN206505718U (en) | 2017-02-25 | 2017-02-25 | A kind of DVD laser head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206505718U (en) |
-
2017
- 2017-02-25 CN CN201720176773.4U patent/CN206505718U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170919 Termination date: 20210225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |