CN113764010B - Optical storage blue-ray optical head with rapid reading and writing function - Google Patents
Optical storage blue-ray optical head with rapid reading and writing function Download PDFInfo
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- CN113764010B CN113764010B CN202111047065.8A CN202111047065A CN113764010B CN 113764010 B CN113764010 B CN 113764010B CN 202111047065 A CN202111047065 A CN 202111047065A CN 113764010 B CN113764010 B CN 113764010B
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- light source
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- 238000001514 detection method Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/12—Bit line control circuits, e.g. drivers, boosters, pull-up circuits, pull-down circuits, precharging circuits, equalising circuits, for bit lines
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/22—Read-write [R-W] timing or clocking circuits; Read-write [R-W] control signal generators or management
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- Optical Head (AREA)
Abstract
The invention discloses an optical storage blue light optical head with a rapid reading and writing function, which comprises an optical head shell, wherein a first optical bias element is arranged in the optical head shell, a first light source component and a second light source component are symmetrically arranged on two sides of the first optical bias element respectively, and the first light source component comprises a first blue light source and a first blue light sourceThe lambda wave plate, the second light source component comprises a second blue light source and a second blue light sourceThe lambda wave plate, be provided with collimating lens in the exit direction of first optical offset component, still be provided with the detection subassembly simultaneously in the direction that first optical offset component was facing away from collimating lens, the detection subassembly includes the second optical offset component, and with second optical offset component matched be provided with first detection subassembly and second detection subassembly, first detection subassembly is located the reflection direction of second optical offset component, second detection subassembly is then located the transmission direction of second optical offset component.
Description
Technical Field
The present invention relates to an optical head, and more particularly, to an optical storage blue-ray optical head with a fast read/write function.
Background
The optical head is a mechanism for reading and writing optical disc data in an optical storage system, and the traditional optical head only comprises one light source, namely, one optical head can only use one beam of light for reading and writing operation, under the condition, the maximum reading and writing speed of the optical head can reach 60M/S, and if the reading and writing speed is required to be improved, for example, the reading and writing speed is doubled to reach more than 120M/S, two optical heads, namely, an optical storage system with double optical heads, are required to be arranged in the optical storage system. The design of the double optical heads can increase the manufacturing cost on one hand and occupy larger space on the other hand, thereby increasing the design difficulty of the movement mechanism. There is thus a need for a method or apparatus that solves the above-mentioned problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides the optical storage blue optical head with the functions of simple structure, ingenious design, reasonable layout, compact structure and low cost.
The technical scheme of the invention is as follows: an optical storage blue light optical head with a rapid read-write function comprises an optical head shell, and is characterized in that: a first optical biasing element 1 is arranged in the optical head shell, a first light source component and a second light source component are symmetrically arranged on two sides of the first optical biasing element 1 respectively, and the first light source component comprises a first blue light source 2 and a first blue light sourceThe lambda wave plate 3, the second light source component comprises a second blue light source 4 and a second blue light sourceA lambda wave plate 5, a collimating lens 6 is arranged in the emergent direction of the first optical biasing element 1, a detecting component is arranged in the direction of the first optical biasing element 1 facing away from the collimating lens 6, the detecting component comprises a second optical biasing element 7, a first detecting component and a second detecting component are arranged in a matching way with the second optical biasing element 7, the first detecting component is positioned in the reflecting direction of the second optical biasing element 7, the second detecting component is positioned in the transmitting direction of the second optical biasing element 7, the first detecting component comprises a first photoelectric detector 8, a first detecting mirror 9 is arranged between the first photoelectric detector 8 and the second optical biasing element 7, the second detecting component comprises a second photoelectric detector 10,
A first reflecting mirror 11 is arranged in the emergent direction of the collimating lens 6, a third optical biasing element 12 is arranged in the emergent direction of the first reflecting mirror 11, a first objective lens component is arranged in the transmission direction of the third optical biasing element 12, a second reflecting mirror 13 is arranged in the reflecting direction of the third optical biasing element 12, a second objective lens component with the same structure as the first objective lens component is arranged in the emergent direction of the second reflecting mirror 13,
The first objective lens assembly comprises a first objective lens 14, wherein magnet coils 15 are symmetrically arranged on two sides of the first objective lens 14, and a first objective lens 14 is arranged in the incident directionA lambda plate 16.
Compared with the prior art, the invention has the following advantages:
The optical storage blue light optical head with the rapid reading and writing function in the structural form has the advantages of simple structure, ingenious design and reasonable layout, and aims at the problem that the traditional optical head only contains one blue light source, so that the reading and writing speed is relatively low, a special structure is designed, a plurality of optical biasing elements are adopted, two blue light sources are integrated in one optical head in a matched mode through a unique optical path design, part of optical paths of the two blue light sources are overlapped, the optical paths of the two blue light sources are not affected by each other under the action of the optical biasing elements and wavelength control, and therefore a double-light-source reading and writing optical head under the condition of a shared optical path is manufactured, and the two light sources in the optical head can independently finish reading and writing operation, so that the purposes of improving the reading and writing speed and improving the working efficiency are achieved. And it is compact in whole volume, and shares a part of optical elements, and compared with the mode of two optical heads under the same reading and writing speed condition, the space occupation is smaller, and the cost is lower. Therefore, the novel water purifier has various advantages, is particularly suitable for popularization and application in the field, and has very broad market prospect.
Drawings
FIG. 1 is a schematic view of an optical path of an embodiment of the present invention.
Detailed Description
Specific embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in fig. 1: an optical storage blue light optical head with a rapid read-write function comprises an optical head shell, and is characterized in that: a first optical biasing element 1 is arranged in the optical head shell, a first light source component and a second light source component are symmetrically arranged on two sides of the first optical biasing element 1 respectively, and the first light source component comprises a first blue light source 2 and a first blue light sourceThe lambda wave plate 3, the second light source component comprises a second blue light source 4 and a second blue light sourceA lambda wave plate 5, a collimating lens 6 is arranged in the emergent direction of the first optical biasing element 1, a detecting component is arranged in the direction of the first optical biasing element 1 facing away from the collimating lens 6, the detecting component comprises a second optical biasing element 7, a first detecting component and a second detecting component are arranged in a matching way with the second optical biasing element 7, the first detecting component is positioned in the reflecting direction of the second optical biasing element 7, the second detecting component is positioned in the transmitting direction of the second optical biasing element 7, the first detecting component comprises a first photoelectric detector 8, a first detecting mirror 9 is arranged between the first photoelectric detector 8 and the second optical biasing element 7, the second detecting component comprises a second photoelectric detector 10,
A first reflecting mirror 11 is arranged in the emergent direction of the collimating lens 6, a third optical biasing element 12 is arranged in the emergent direction of the first reflecting mirror 11, a first objective lens component is arranged in the transmission direction of the third optical biasing element 12, a second reflecting mirror 13 is arranged in the reflecting direction of the third optical biasing element 12, a second objective lens component with the same structure as the first objective lens component is arranged in the emergent direction of the second reflecting mirror 13,
The first objective lens assembly comprises a first objective lens 14, wherein magnet coils 15 are symmetrically arranged on two sides of the first objective lens 14, and a first objective lens 14 is arranged in the incident directionA lambda plate 16.
The working process of the optical storage blue-ray optical head with the rapid reading and writing function provided by the embodiment of the invention is as follows: the first blue light source 2 has a wavelength range of 400-410nm, the second blue light source 4 has a wavelength range of 415-425nm, the light emitted from both sources is linearly polarized light (P polarized light) vibrating in the horizontal direction, and the horizontally polarized light emitted from both sources passes through the first blue light sourceLambda plate 3 and secondAfter the λ -plate 5, the light becomes first polarized light (S polarized light) in the vertical direction, and the two first polarized light beams enter the first optical bias element 1 at the same time, and the characteristics of the first reflection surface in the first optical bias element 1 are as follows: s polarized light with the reflection wavelength of 400-410nm, S polarized light with the transmission wavelength of 415-425nm, and P polarized light with the transmission wavelengths of 400-410nm and 415-425 nm; the characteristics of the second reflecting surface are as follows: reflecting S polarized light with the wavelength of 415-425nm, transmitting S polarized light with the wavelength of 400-410nm, and transmitting P polarized light with the wavelengths of 400-410nm and 415-425 nm;
The light emitted by the first optical bias element 1 is changed into parallel light beams after passing through the collimating lens 6, then enters the third optical bias element 12 after being changed in direction by the first reflecting mirror 11 placed at 45 degrees, and the S polarized light with the wavelength of 415-425nm is reflected by the third optical bias element 12, and the S polarized light with the wavelength of 400-410nm is transmitted by the third optical bias element 12; the S polarized light of 400-410nm passing through the third optical bias element 12 passes through the first After the lambda plate 16, the light is changed into elliptical polarized light, and the elliptical polarized light is focused on the optical disc after passing through the first objective lens 14; the polarized light of 415-425nm reflected by the third optical biasing element 12 is reflected by the second reflecting mirror 13 and then passes through the secondA lambda wave plate which is also changed into elliptical polarized light, and the elliptical polarized light is focused on the optical disk 12 after passing through the second objective lens;
magnet coils arranged on two sides of the first objective lens 14 or the second objective lens can respectively drive the first objective lens and the second objective lens to perform focusing/tracking servo driving, that is to say, two paths of light paths can respectively perform servo driving, thereby ensuring the accuracy of signal reading and writing.
After the light spot is irradiated onto the optical disk, the elliptical polarized light with the wavelength of 400-410nm is reflected by the optical disk, is transmitted through the first objective lens 14 and then becomes parallel light beam, and is transmitted through the first objective lensThe lambda plate 16 then becomes P linearly polarized light to the third optical biasing element 12; similarly, after the other path of light is reflected by the optical disk, 415-425nm elliptical polarized light is transmitted through the second objective lens and then becomes parallel light velocity, and then is transmitted through the second objective lensThe lambda wave plate becomes P linearly polarized light, and the P linearly polarized light reaches the third optical biasing element 12 after being reflected by the second reflecting mirror 13;
The third optical bias element 12 can reflect the P polarized light with the wavelength of 415-425nm, transmit the P polarized light with the wavelength of 400-410nm, and enter the collimating mirror 6 after being reflected by the first reflecting mirror 11, and simultaneously, the two P polarized lights reach the second optical bias element 7 after transmitting the first optical bias element 1;
The characteristics of the reflective layer in the second optical bias element 7 are: the P polarized light of 400-410nm is transmitted, and the P polarized light of 415-425nm is reflected, so that after reaching the second optical biasing element 7, the two P polarized lights are respectively focused on the first photoelectric detector 8 and the second photoelectric detector 10 through transmission and reflection, and the signal detection of the optical disc is realized.
Claims (1)
1. An optical storage blue light optical head with a rapid read-write function comprises an optical head shell, and is characterized in that: a first optical biasing element (1) is arranged in the optical head shell, a first light source component and a second light source component are symmetrically arranged on two sides of the first optical biasing element (1) respectively, and the first light source component comprises a first blue light source (2) and a first blue light sourceThe lambda wave plate (3) and the second light source component comprises a second blue light source (4) and a second blue light sourceA lambda wave plate (5), a collimating lens (6) is arranged in the emergent direction of the first optical biasing element (1), a detection component is arranged in the direction of the first optical biasing element (1) back to the collimating lens (6), the detection component comprises a second optical biasing element (7), a first detection component and a second detection component are arranged in a matched mode with the second optical biasing element (7), the first detection component is positioned in the reflecting direction of the second optical biasing element (7), the second detection component is positioned in the transmitting direction of the second optical biasing element (7), the first detection component comprises a first photoelectric detector (8), a first detection mirror (9) is arranged between the first photoelectric detector (8) and the second optical biasing element (7), the second detection component comprises a second photoelectric detector (10), a second detection mirror (17) is arranged between the second photoelectric detector (10) and the second optical biasing element (7),
A first reflecting mirror (11) is arranged in the emergent direction of the collimating lens (6), a third optical biasing element (12) is arranged in the emergent direction of the first reflecting mirror (11), a first objective lens component is arranged in the transmission direction of the third optical biasing element (12), a second reflecting mirror (13) is arranged in the reflecting direction of the third optical biasing element (12), a second objective lens component with the same structure as the first objective lens component is arranged in the emergent direction of the second reflecting mirror (13),
The first objective lens component comprises a first objective lens (14), magnet coils (15) are symmetrically arranged on two sides of the first objective lens (14), and a first objective lens (14) is arranged in the incident directionAnd a lambda plate (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111047065.8A CN113764010B (en) | 2021-09-08 | 2021-09-08 | Optical storage blue-ray optical head with rapid reading and writing function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111047065.8A CN113764010B (en) | 2021-09-08 | 2021-09-08 | Optical storage blue-ray optical head with rapid reading and writing function |
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| Publication Number | Publication Date |
|---|---|
| CN113764010A CN113764010A (en) | 2021-12-07 |
| CN113764010B true CN113764010B (en) | 2024-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111047065.8A Active CN113764010B (en) | 2021-09-08 | 2021-09-08 | Optical storage blue-ray optical head with rapid reading and writing function |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0223545A (en) * | 1988-07-12 | 1990-01-25 | Matsushita Electric Ind Co Ltd | Optical head device |
| CN101116139A (en) * | 2005-03-22 | 2008-01-30 | 松下电器产业株式会社 | Optical disc device |
| CN101807425A (en) * | 2010-03-25 | 2010-08-18 | 清华大学深圳研究生院 | Blue light optical head |
| JP2011227944A (en) * | 2010-04-15 | 2011-11-10 | Asahi Glass Co Ltd | Optical head device |
| CN216487322U (en) * | 2021-09-08 | 2022-05-10 | 中国华录·松下电子信息有限公司 | Optical storage blue light optical head with quick read-write function |
-
2021
- 2021-09-08 CN CN202111047065.8A patent/CN113764010B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0223545A (en) * | 1988-07-12 | 1990-01-25 | Matsushita Electric Ind Co Ltd | Optical head device |
| CN101116139A (en) * | 2005-03-22 | 2008-01-30 | 松下电器产业株式会社 | Optical disc device |
| CN101807425A (en) * | 2010-03-25 | 2010-08-18 | 清华大学深圳研究生院 | Blue light optical head |
| JP2011227944A (en) * | 2010-04-15 | 2011-11-10 | Asahi Glass Co Ltd | Optical head device |
| CN216487322U (en) * | 2021-09-08 | 2022-05-10 | 中国华录·松下电子信息有限公司 | Optical storage blue light optical head with quick read-write function |
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| Publication number | Publication date |
|---|---|
| CN113764010A (en) | 2021-12-07 |
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