CN100395831C - Optical storing and reading apparatus and its method - Google Patents
Optical storing and reading apparatus and its method Download PDFInfo
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- CN100395831C CN100395831C CNB2004100931692A CN200410093169A CN100395831C CN 100395831 C CN100395831 C CN 100395831C CN B2004100931692 A CNB2004100931692 A CN B2004100931692A CN 200410093169 A CN200410093169 A CN 200410093169A CN 100395831 C CN100395831 C CN 100395831C
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Abstract
The present invention relates to an optical storing and reading device and a method, particularly to a device and a method which is characterized in that a part of optical storage medium is set as a reflection part; the reflected light is utilized to control a servo control device; accordingly, a depth adjustment part is added and the position where the light is focused on the storage medium can be changed. The present invention comprises a first flatting beam light splitter, a second flatting beam light splitter, an object lens and a depth adjustment component, wherein the light quantity of the light sent out by a light output device is adjusted and the input light is reflected by the first flatting beam light splitter; the light put in by the first flatting beam light splitter is reflected by the second flatting beam light splitter; the light reflected by the first flatting beam light splitter and the second flatting beam light splitter is focused on the object lens of the optical storage medium; the depth of the light focused by the object lens is adjusted via the depth adjustment component. The invention is expected to store and read the specific position of the storage medium via a follower and a focal servo.
Description
(1) technical field
The invention relates in the HIGH-DENSITY OPTICAL STORAGE medium system, with data storage with read the zone and correctly be set at a kind of optical storage and the fetch equipment and the method thereof of simple structure.
(2) background technology
Even to this day, the digitizing (digital) of dependence data (data), high capacity etc., storage medium are changed to disc (disk) by tape (tape), simultaneously, by improving the density of storage data on disc, improve the memory capacity of disc.
Therefore, in order to improve the storage density of high density compact disc, the distance (being the signal trace spacing) between signal trace is diminished.
, in the manufacturing process of this CD, in the injection moulding and hardening process of plastics, just error can take place here, thus, even in central punch, the phenomenon of deviation also can the generative center hole occurs.
Simultaneously, CD is followed the tracks of and is promptly allowed to correctly store according to the spacing of certain specification, but because deviation appears in center pit, the phenomenon of eccentric and disc tilt (tilt) therefore can occur.
Therefore, in optical disc eccentricity, when CD was rotated, the central shaft of driver was difficult to the tracking center of CD in full accord.
Therefore, want to read needed tracking signal and be difficult to, in CD and DVD mode, in order when eccentric situation takes place, also can to make light beam catch up with needed tracking all the time, and use the tracking servo device.
That is, above-mentioned tracking servo device generates and the corresponding electric signal of beam trajectory state, and serve as basic with this signal, object lens and light picker body are moved to radius (radial) direction, and the correction light-beam position, thus correctly follow the tracks of.
On the other hand, if when light beam can't carry out correlation tracking, above-mentioned optical disc eccentricity phenomenon not only can take place, and the disc tilt phenomenon can take place.If like this, hardware problem can take place as the error that is taken place in it when CD being installed in the CD-ROM drive rotating shaft.That is, tracking taking place does not have correctly according to the consistent mistake of vertical direction with focusing on.The state of this disc tilt is called as disc tilt (tilt).
In general, when storing and reading, optical disc memory must maintain horizontality with CD, but because the machine error of light picker and rotating shaft and the tolerance when installing, CD just can tilt to tangent line (Tangential below the is referred to as tangent line) direction of radius (radial: be also referred to as the secondary radius) direction and information trace.
Fig. 1 is the optical accessing system constituent components figure that tilts according to control of the present invention.It is made up of following each several part: information stores is gone into optical storage medium CD 101 or therefrom read information, and CD institute beam reflected is converted to the built-in light picker 102 of optical detector 102a of electric signal; Include the inclination mistake detection device 106 that the push-pull signal that utilizes tangential direction detects tilt error signal, generate the servo fault generating apparatus 103 of servo error signal in the electric signal of from light picker, exporting; The trail-and-error signal that above-mentioned servo fault generating apparatus is generated detects next trail-and-error (TE) detection device 104; Focusing mistake (FE) detection device 105 that the focus signal that above-mentioned servo fault generating apparatus is generated detects; The tangent line that above-mentioned servo fault generating apparatus is generated is recommended the tangent line that rub-out signal detects and is recommended wrong detection device (wrong detection device promptly tilts) 106.
In order to control servomechanism, also must comprise following each several part: the Servocontrol device 108 (comprising focusing, tracking, incline controller) that generates and export control signal by the signal that utilizes above-mentioned wrong detection device to detect; Control above-mentioned light picker according to the drive signal that above-mentioned Servocontrol device is exported, and the drive unit 109 (comprising focusing, tracking, reclining drive device) of control servomechanism.
In aforesaid optical storage/fetch equipment, development along with optical storage technology, the wavelength of laser diode LD (Laser Diode) reduces and improves the digital ring NA (NumericalAperture) of object lens, make the information recording medium densification that becomes, present Blu-ray disc of inventing (blue disk) is one of remarkable representative technology wherein.
In above-mentioned technology, also has a kind of solid storing medium (Volumetric storage media) storage mode.
Above-mentioned solid storing medium (Volumetric storage media) storage medium is invented in order to solve the suffered technical limitation of memory technology in original 2 dimension CD modes, it is a nearest technical field that was greatly developed in 4,5 years.
Its representation mode can be divided into following three classes: the page or leaf guiding record (page oriented recording) of 1) holographic photography (Holography) mode, 2) the position guiding record (bit oriented recording) of 2 wavelength photons (Two-photon) mode, 3) multilayer (Multilayer) mode.
1) holographic photography (Holography): will store light beam and information and interfere lines to store into to have in photoreactive physics refraction (photorefractive) media, utilize lens that page or leaf (page) information of 2D is stored, in the space that is called as multiplexing (multipleization), be not subjected to the influence of angle and wavelength etc., and store.
2) 2 wavelength photons (Two-photon): utilize particular intermediaries can absorb the characteristic of 2 specific wavelength photons (photon), be absorbed part and have change of refractive, utilize the light of other wavelength to detect, and do not rely on reflection, and utilize fluorescence, thereby do not need reflecting surface, utilize the depth direction of 3D media.
Information is not according to page or leaf (page) information, but position (bit) information storage means (page or leaf (page) storage mode that distortion is also arranged), restriction (limit) light intensity that causes 2 wavelength photons (Two-photon) phenomenon is very big, has only occurrence flag in the limited zone (mark).
3) multilayer (Multilayer): be to carry out the general technology of dashing that expands in dual (Dual layer) mode from original DVD technology.Though be the mode that a plurality of reflection horizon are arranged, because all lose in each reflection horizon, it is limited therefore storing quality (jitter).
Because the simple expansion that is original technology is dashed,, exist curved surface and count difference correction problem and storage/read problems such as light loss though completeness is very high.
But be to use the 3D media above-mentioned 1), 2) mode uses tracking, the focus servo device is difficulty very.
Particularly holographic photography (holography) or 2 wavelength photons (two-photon) technology are not set certain reflection horizon on storage medium, the greatest problem of this mode is when storing or read, there is not the reflection horizon, with corresponding with tracking and focus servo device.
In the focus servo device of normal optical pick-up, accumulation layer is different with the refractive index of basic layer with the reflection horizon, as servomechanism, and the tracking servo device is because be groove bank, groove (land groove) structure, so storage medium can not make in this way with the light that is reflected.
On the other hand, in the research standard that does not now also come into operation, though utilize the accurately device of shift position such as stepper motor (stepping motor), if but consider the size and the density of storage mark (mark), the possibility that produces error is very high, simultaneously, the standard that it is manufactured common use also is almost impossible.
(3) summary of the invention
Therefore, in order to solve in the aforesaid way problems such as Move tool (stepper motor (stepping motor) etc.) the existing instability of accurately adjusting the position and diseconomy, the objective of the invention is: a kind of reflecting surface of setting on storage medium is provided, and make servo light and storage/read with mutually unified object lens and the regulator of main (main) light, thereby make tracking servo device and the focus servo device can stable operation, with optical storage and fetch equipment and the method thereof that enables on desirable position, to move.
To achieve these goals, comprise following each several part in optical storage of the present invention and the fetch equipment:
Light source is used for emission of lasering beam;
The 1st polarization beam apparatus is used for described laser beam transmission is key light, is reflected into servo light;
The 2nd polarization beam apparatus is used for described servo light is reflected;
Catoptron is used to reflect described key light;
The optically focused parts are used to reflect described servo light, the described key light of transmission;
Object lens and regulator are used for described servo light and key light are converged to the solid storing media; And
Depth adjustment lens between described catoptron and optically focused parts are used for the depth of focus of described key light is regulated;
Wherein said solid storing media have servo light converge thereon, be used for servo reflection horizon and key light converge thereon, be used to the accumulation layer that reads and store.
For example: optical storage medium is a solid storing type media, bottom surface, centre or above can form the standard reflection structural surface on the fixed point.
For example: utilize the light that is reflected by above-mentioned standard reflection structural surface, control the tracking and the focus servo of above-mentioned optical storage medium.
For example: see through the storage of described the 1st polarization beam apparatus and read servo use identical object lens and the regulator used up that is reflected with key light and the 2nd polarization beam apparatus.
For example: the position of degree of depth control assembly is when object lens and regulator reverse direction move, and the depth of focus that sees through the key light of the 1st polarization beam apparatus can form in the deep layer of optical storage medium.
In addition, a kind of optical storage of the present invention and read method comprise: the step that forms reflecting surface on optical storage medium; The light that light source sent is cut apart the step of exporting with 2 light path paths by the polarization beam apparatus parts; It is servo to utilize the 2nd light path path to control, and the step of storing/reading the zone is set/changed in the 1st light path path by the depth adjustment lens;
The servo step of above-mentioned the 2nd light path control comprises: the servo light in the 2nd light path path carries out the step of incident and reflection simultaneously by the 2nd polarization beam apparatus, optically focused parts, quarter wave plate, object lens and regulator on the reflection horizon of described optical storage medium; By above-mentioned the 2nd polarization beam apparatus and optically focused parts by the step of servo optical detector institute perception; The step that Servocontrol device control focuses on and follows the tracks of;
The step that the zone was stored/read in above-mentioned the 1st light path path setting/change comprises: after above-mentioned the 1st light path path is reflected on the accumulation layer of described optical storage medium, via the step of optically focused parts, depth adjustment lens, catoptron and the 1st polarization beam apparatus polarization; Detected and store by optical detector/step that reads.
Simultaneously, comprise following each step according to optical storage of the present invention and read method:
On optical storage medium, form the step of reflecting surface; The light that light source sent is cut apart the step of exporting with 2 opticpaths by the polarization beam apparatus parts;
The servo light that the 2nd light path path utilizes the 1st polarization beam apparatus to tell reflects via the 2nd polarization beam apparatus, optically focused parts, is converged on the optical storage medium by object lens and regulator;
Utilize the above-mentioned light that is reflected, incide the step of the optical detector of servo usefulness again via object lens and regulator, optically focused parts and the 2nd polarization beam apparatus;
The key light that the 1st light path path is told via the 1st polarization beam apparatus converges on the optical storage medium through catoptron, depth adjustment lens, optically focused parts and object lens and regulator, and reflection is after object lens and regulator, optically focused parts, depth adjustment lens, catoptron and the 1st polarization beam apparatus incide reads and the step of recording optical detector.
For example:, regulate the light depth of focus on the optical storage medium by moving the position of above-mentioned depth adjustment lens.
For example: operation storage or read functions in the zone that the light depth of focus on above-mentioned optical storage medium is conditioned.
Effect of the present invention:
Carry out depth adjustment if use optical storage of the present invention and fetch equipment and method thereof, can on the solid storing media, set an index plane, utilization is used for servo light, use object lens and the regulator identical with key light, can be in not having the solid storing media that accumulation layer is carried out servo standard formation, focus on and tracking servo, thereby can on needed position, store and read.
Simultaneously, compare with original mechanical assigned address mode, the present invention is the information storing device with simple, precision and economic dispatch advantage.
Simultaneously, the present invention can become the main flow of optical storage technology from now on, and it can also be applicable in the volume memory technology of anticipation.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is the optical accessing system constituent components figure that tilts according to control of the present invention.
Fig. 2 carries out optical storage and light picker that reads and peripheral servocontrol component drawings thereof.
Fig. 3 is the apperance figure that forms reflecting surface in the storage medium bottom surface.
Fig. 4 is that summary shows according to optical storage of the present invention/read process flow diagram flow chart.
Fig. 5 is according to the operational flow diagram of storing/reading the position on the change optical storage medium of the present invention.
(5) embodiment
With reference to the accompanying drawings, the embodiment to optical storage of the present invention and fetch equipment and method thereof is elaborated.
Fig. 2 carries out optical storage and light picker that reads and peripheral servocontrol component drawings thereof.
As shown in the figure, comprise altogether among the figure as lower member: the laser diode (LD) 201 that produces LASER Light Source; The LASER Light Source that above-mentioned laser diode 201 is produced is converted to the parallel collimation lens (CL) 202 of directional light; To utilize half-wave plate (half waveplate) that the light quantity of the servo beam (servo beam) of the directional light that sees through above-mentioned parallel collimation lens 202 that the 1st polarization beam apparatus (PBS1) (Polarization Beam Splitter) 204 reflected and main beam (main beam) becomes the adjusting light quantity of certain ratio (HWP) 203; Make by above-mentioned PBS1204 and form the servo light of the 2nd opticpath by the 2nd polarization beam apparatus (PBS2) 205, optically focused unit BS (beam spot) 208, quarter wave plate QWP (quarter wave plate) 209, object lens (OL) and regulator (actuator) 210, on optical storage medium (solid storing media) (volumetric media) 211, carry out incident/reflection, by above-mentioned BS208, PBS2205 is by the perception of servo (servo) optical detector PD212 institute, and control focuses on and the Servocontrol device (servo control circuit) 213 of tracking.
On the other hand, the main beam that forms the 1st opticpath by above-mentioned the 1st polarization beam apparatus PBS1 via catoptron 206 and core of the present invention (for to the storage of above-mentioned solid storing media/read zone (position) to focus on, and can carry out move left and right)---depth adjustment lens (depth controllens) 207, pass through BS208 respectively, QWP209, OL and regulator 210 and by QWP (quarterwave plate) 209, object lens OL and regulator 210, on optical storage medium (solid storing media) (volumetric media) 211, store/read/reflect, via BS208, depth adjustment lens (depth control lens) 207 catoptrons 206 are polarized in 1PBS1, and are detected by optical detector (PD) 214.
Below the ruuning situation of the formation of above-mentioned Fig. 2 is launched explanation.
At first, according to the present invention, the output light that light source sent of light picker is divided into two parts, and a part is used as the key light (main beam) of storing/reading, and another part is used to carry out servo servo light (servo beam) on index plane.Servo light has the reflection horizon of standard and the land/groove that is used to follow the tracks of (ridge/groove) to constitute or pre-pit (prefabricated pit) on the bottom surface of solid storing media respectively as shown in Figure 3.Zone (position) is stored/read to the focus point of key light by depth adjustment lens 207 by change.
Above-mentioned HWP203 can regulate the ratio of two-beam, PBS1, PBS2 and QWP can make the optical efficiency maximization of each PD of input, key light can utilize depth adjustment lens 207 to regulate the depth direction focal position, and the focus of servo light is fixed on the index plane of volume storage medium bottom surface.
Above-mentioned servo light and key light are by the synthetic a branch of light of BS, by common object lens and regulator, if servo light is adjusted into along the index plane irradiation, just key light has been conditioned simultaneously.
Servo light is accepted with PD by servo, relies on servo circuit to come driving regulator, at this moment, servo with just had among the PD with the normal optical pick-up in the employed tracking face cut zone identical with focus servo mode function.
When depth adjustment is used lens a position, because the relative depth of key light and servo light maintains to a certain degree, two-beam all shines along the ridge/groove (land/groove) or the prefabricated pit (pre-pit) of storage medium bottom surface, just can utilize the depth adjustment lens that key light is changed at certain intervals, thereby can store/read in the needed degree of depth and needed tracing positional.
Fig. 3 is the apperance figure that forms reflecting surface in the storage medium bottom surface.
Shown in institute's accompanying drawing, ridge/groove (land/groove) layer 301a arranged on the bottom surface of storage medium 301, servo light is reflected, along with the variation of storing/reading the degree of depth, rely on the operation of depth adjustment lens 207, the focal position of key light is also different.
As mentioned above, when the position of degree of depth control assembly when object lens and regulator 302 directions move, the depth of focus by the key light on the optical storage medium has just shoaled; When the position of degree of depth control assembly when the reverse direction of object lens moves, the depth of focus by the key light on the optical storage medium has just deepened.
Simultaneously, the position of above-mentioned depth adjustment lens 207 (zone) can be controlled and move by microcomputer.For example, when storing, if want when in advance store in debatable other zones, just microcomputer can be controlled above-mentioned depth adjustment lens, the depth of focus of regulating key light.
Below above-mentioned Fig. 2 and Fig. 3 are described.
According to mode of the present invention, with light beam be divided into respectively with the normal optical pick-up in the corresponding key light of storage/record light and on index plane, carry out servo servo light, the reflective information and the ridge/groove of the index plane by the optical storage medium bottom surface, prefabricated pit (land/groove, information such as pre-pit), servo light has had focusing, trace information, and is received with PD by servo, and carries out servo.
Key light uses regulator and the object lens identical with servo light, and frequent and servo light is kept certain intervals.The opticpath of key light is provided with the depth adjustment lens, can regulate the storage of storage medium/read the degree of depth, and has when keeping relative distance with servo light, focuses on the effect with tracking servo.
To whole opticpaths of the light picker (Fig. 2) of the focusing that is applicable to storage medium of the present invention and tracking servo mode be elaborated below.
From the light process collimation lens (collimation lens) that LD sent, and in through HWP and PBS1, be split into key light and servo light, regulate the ratio of key light and servo light by the rotation of HWP.
Servo light focused on by object lens, and the index plane on the storage medium bottom surface reflects through PBS2, BS, QWP.
The light that has comprised servo-information passes through object lens and QWP again, is received with PD by servo by BS, PBS2, comes driving regulator by servo control circuit, and keeps focusing and tracking servo.
On the other hand, after key light is cut apart by PBS1, by the depth adjustment lens, by BS, through QWP and object lens, and in needed storage/read the position to focus on.
For example: when reading, the light that is reflected is received by PD by BS and PBS1 through object lens and QWP.At this moment, utilize the depth adjustment lens, just can regulate the degree of depth of focusing, this degree of depth and index plane are kept certain interval, so it has servo effect indirectly.
Fig. 4 is that summary shows according to optical storage of the present invention/read process flow diagram flow chart.
S400, the bottom surface of optical storage medium (Fig. 3 301), centre or above the formation reflecting surface.
S401, the light that light source LD is exported is cut apart by HWP, is divided into the above opticpath of 2 bundles such as servo light and key light by polarisation parts (PBS1).
S402, servo light is used as the 2nd light path and controls servoly in the above-mentioned light that is output, and key light is used as the 1st light path, sets/change the zone of storing/reading by the depth adjustment lens.
Fig. 5 is according to the operational flow diagram of storing/reading the position on the change optical storage medium of the present invention.
S500, the bottom surface of optical storage medium (Fig. 3 301), centre or above the formation reflecting surface.
S501, the light that light source LD is exported is cut apart by HWP, is divided into as the servo light of the 2nd light path with as the above opticpaths of 2 bundles such as key light of the 1st light path by polarisation parts (PBS1).
S502 is reflected by optical storage medium bottom surface, centre or top formed index plane by object lens as the servo light of the 2nd light path.
S503 utilizes the above-mentioned light that is reflected, and controls servo drive, the line focusing of going forward side by side and tracking.
S504, S505, on the other hand, the 1st opticpath can be regulated the degree of depth that focuses on the optical storage medium by moving of above-mentioned depth adjustment lens position, and sets optical storage/read zone.
As mentioned above, the invention relates in the bottom surface of optical storage medium and set up the reflection position, utilize the light that is reflected, control Servocontrol device, and increase the depth adjustment parts, thereby the Apparatus for () and method therefor that the position that makes key light focus on (focusing) on optical storage medium can change.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.For example, be not only applicable to disc (disk) type solid storing media according to depth adjustment mode of the present invention, and be equally applicable to various solid storing media such as piece (block) form.
Simultaneously, not only can be built up on as shown in Figure 3 the bottom surface as the index plane of reflecting surface, but also can on middle layer or upper surface layer, set up index plane, come the accommodation reflex rate.
Simultaneously, mode of the present invention is compared than the accurate move mode of machinery, has very correct position numerical value, and business-like possibility is very big.
Claims (11)
1. optical storage and fetch equipment is characterized in that comprising:
Light source is used for emission of lasering beam;
The 1st polarization beam apparatus is used for described laser beam transmission is key light, is reflected into servo light;
The 2nd polarization beam apparatus is used for described servo light is reflected;
Catoptron is used to reflect described key light;
The optically focused parts are used to reflect described servo light, the described key light of transmission;
Object lens and regulator are used for described servo light and key light are converged to the solid storing media; And
Depth adjustment lens between described catoptron and optically focused parts are used for the depth of focus of described key light is regulated;
Wherein said solid storing media have servo light converge thereon, be used for servo reflection horizon and key light converge thereon, be used to the accumulation layer that reads and store.
2. optical storage as claimed in claim 1 and fetch equipment is characterized in that:
Described optical storage medium is a solid storing type media, bottom surface, centre or above ad-hoc location can form the standard reflection structural surface.
3. optical storage as claimed in claim 2 and fetch equipment is characterized in that:
The light that utilizes described standard reflection structural surface to be reflected is controlled the tracking and the focus servo of described optical storage medium.
4. optical storage as claimed in claim 2 and fetch equipment is characterized in that:
On the bottom surface of described solid storing media, there is the reflection horizon of standard and the ridge that is used to follow the tracks of/groove to constitute or prefabricated pit respectively, carries out servo the mark of being stored.
5. optical storage as claimed in claim 1 and fetch equipment is characterized in that:
See through the storage of described the 1st polarization beam apparatus and read servo use identical object lens and the regulator used up that is reflected with key light and the 2nd polarization beam apparatus.
6. optical storage as claimed in claim 1 and fetch equipment is characterized in that:
When described depth adjustment position component when described object lens and conditioner directional move, the depth of focus of the key light by described the 1st polarization beam apparatus can form at the shallow-layer of described optical storage medium.
7. optical storage as claimed in claim 1 and fetch equipment is characterized in that:
When the position of described degree of depth control assembly when object lens and regulator reverse direction move, the depth of focus of the key light by described the 1st polarization beam apparatus can form in the deep layer of described optical storage medium.
8. optical storage and read method is characterized in that comprising:
On optical storage medium, form the step of reflecting surface;
The light that light source sent is cut apart the step of exporting with 2 light path paths by the polarization beam apparatus parts;
It is servo to utilize the 2nd light path path to control, and the step of storing/reading the zone is set/changed in the 1st light path path by the depth adjustment lens;
The servo step of above-mentioned the 2nd light path control comprises: the servo light in the 2nd light path path carries out the step of incident and reflection simultaneously by the 2nd polarization beam apparatus, optically focused parts, quarter wave plate, object lens and regulator on the reflection horizon of described optical storage medium; By above-mentioned the 2nd polarization beam apparatus and optically focused parts by the step of servo optical detector institute perception; The step that Servocontrol device control focuses on and follows the tracks of;
The step that the zone was stored/read in above-mentioned the 1st light path path setting/change comprises: after above-mentioned the 1st light path path is reflected on the accumulation layer of described optical storage medium, via the step of optically focused parts, depth adjustment lens, catoptron and the 1st polarization beam apparatus polarization; Detected and store by optical detector/step that reads.
9. optical storage and read method is characterized in that comprising:
On optical storage medium, form the step of reflecting surface;
The light that light source sent is cut apart the step of exporting with 2 opticpaths by the polarization beam apparatus parts;
The servo light that the 2nd light path path utilizes the 1st polarization beam apparatus to tell reflects via the 2nd polarization beam apparatus, optically focused parts, is converged on the optical storage medium by object lens and regulator;
Utilize the above-mentioned light that is reflected, incide the step of the optical detector of servo usefulness again via object lens and regulator, optically focused parts and the 2nd polarization beam apparatus;
The key light that the 1st light path path is told via the 1st polarization beam apparatus converges on the optical storage medium through catoptron, depth adjustment lens, optically focused parts and object lens and regulator, and reflection is after object lens and regulator, optically focused parts, depth adjustment lens, catoptron and the 1st polarization beam apparatus incide reads and the step of recording optical detector.
10. optical storage as claimed in claim 9 and read method is characterized in that:
By moving the position of described depth adjustment lens, regulate the light depth of focus on the described optical storage medium.
11. optical storage as claimed in claim 10 and read method is characterized in that:
Carry out data storage in the zone of the light depth of focus that on described optical storage medium, is conditioned or read.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100931692A CN100395831C (en) | 2004-12-17 | 2004-12-17 | Optical storing and reading apparatus and its method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100931692A CN100395831C (en) | 2004-12-17 | 2004-12-17 | Optical storing and reading apparatus and its method |
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| CN1790503A CN1790503A (en) | 2006-06-21 |
| CN100395831C true CN100395831C (en) | 2008-06-18 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001134961A (en) * | 1999-11-05 | 2001-05-18 | Olympus Optical Co Ltd | Optical recording/reproducing device |
| US6540397B2 (en) * | 2000-04-07 | 2003-04-01 | Siro Technologies, Inc. | Optical information storage medium |
| JP2003337525A (en) * | 2002-05-17 | 2003-11-28 | Pioneer Electronic Corp | Hologram recording device and method of multiple recording type and hologram reconstructing device and method |
-
2004
- 2004-12-17 CN CNB2004100931692A patent/CN100395831C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001134961A (en) * | 1999-11-05 | 2001-05-18 | Olympus Optical Co Ltd | Optical recording/reproducing device |
| US6540397B2 (en) * | 2000-04-07 | 2003-04-01 | Siro Technologies, Inc. | Optical information storage medium |
| JP2003337525A (en) * | 2002-05-17 | 2003-11-28 | Pioneer Electronic Corp | Hologram recording device and method of multiple recording type and hologram reconstructing device and method |
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| Publication number | Publication date |
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| CN1790503A (en) | 2006-06-21 |
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