CN101256785B - Blue light mother disc player - Google Patents
Blue light mother disc player Download PDFInfo
- Publication number
- CN101256785B CN101256785B CN2007101254217A CN200710125421A CN101256785B CN 101256785 B CN101256785 B CN 101256785B CN 2007101254217 A CN2007101254217 A CN 2007101254217A CN 200710125421 A CN200710125421 A CN 200710125421A CN 101256785 B CN101256785 B CN 101256785B
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- optical
- blue light
- disc player
- disc
- mother
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Abstract
A blue ray mother-disc player comprising a blue ray optical disc player optical system is disclosed, the blue ray optical disc player optical system comprises an optical reading head, characterized in that the optical reading head is provided with an optical compensating device which can refract a light beam to enable the diameter of a focus light spot to reach the stated diameter. The invention reinforces the refraction effect of the light beam by installing the optical compensating device on the optical reading head of the current blue ray mother-disc player optical system, thus causing the smaller focus light spot to reach the stated diameter. Therefore, the blue ray mother-disc player disclosed by the invention can directly play the blue ray mother-disc.
Description
Technical field
The present invention relates to field of optical storage technology, relate in particular to a kind of Blu-ray Disc reader reading data.
Background technology
Blue light is state-of-the-art high capacity disc format meant, and the diameter of Blu-ray Disc is 12cm, and is the same with the size of normal optical disk (CD) and dagital CD (DVD).The video data that reaches 27GB can be recorded, be play to this cd-rom using 405n blue laser on the single-surface single-layer CD, capacity than existing DVD is big more than 5 times (capacity of DVD is generally 4.7GB), can record 13 hours ordinary tv programmes or 2 hours high-definition television programs.On speed, blue light allows 1 to 2 times of writing speed of per second 4.5 to 9,000,000 in other words.The huge capacity of blue light product is that high-definition movie, recreation and mass data storage have been brought and may and have been made things convenient for.
The blue light mother disc making is the gordian technique in the Blu-ray Disc technology.All Blu-ray Discs all be earlier with various pre-format informations, program contents, data and software imprinting on stamper, make metal stamping and pressing, then by the mold pressing substrate and again on the substrate after the mold pressing covering layer protective layer make.Therefore, the blue light mother disc performance of its making directly influences the performance of Blu-ray Disc.
In optical storage system, player reads optical disc information mainly to be by driving disk rotation, to produce the laser facula that reads optical disc information, will to carry out that opto-electronic conversion produces photo detector signal, the mobile hot spot that reads carries out to the radial position and the axial location of appointment through the laser facula that reads after the disc reflection.Light can concentrate on a focus by optically focused, but because the existence of diffraction phenomena, Focus Club occurs fuzzy, promptly is not an infinitely small point, but the hot spot that diameter is arranged.The diameter of hot spot is by the opening number of Wavelength of Laser and lens (NA, Numerical Aperture have represented the ability of lens collected light) decision, diameter=α (constant, value is had nothing in common with each other) λ/NA.Opening number is big more, and wavelength is short more, just can realize littler focus.Blue light uses wavelength 405nm blue laser, adopts the high aperture shaven head, NA=0.85.Focus diameter is below 0.4 micron, and the individual layer capacity can reach 25GB.Because the use of high opening number lens, the thickness of blue light optical disc reading layer is compressed into 0.1mm.Therefore the thickness of Blu-ray Disc substrate is 1.1 millimeters, and cladding thickness is 0.1 millimeter a protective seam thereon again.As shown in Figure 1, Blu-ray Disc 8 comprises substrate 5, protective seam 6, and the blue light that optical read head 7 sends arrives substrate 5 through protective seam 6 backs.Compare with Blu-ray Disc, blue light mother disc has lacked layer protective layer.When using the laser beam of common blue light player that blue light mother disc is shone, reflects into reading of line data; focus spot will be owing to having lacked layer protective layer; thereby weakened refraction effect, caused focus spot bigger, can't reach the diameter of regulation thus.So common blue light player can only be play Blu-ray Disc, and can't read the information on the blue light mother disc.That is to say does not have player can play-over blue light mother disc now.
Summary of the invention
Technical matters to be solved by this invention provides a kind of blue light mother disc player.
Player of the present invention comprises Blu-ray Disc player optical system, Blu-ray Disc player optical system comprises optical read head, it is characterized in that, can make light beam that the optical compensation device that the diameter that makes focus spot reaches specified diameter takes place to reflect thereby on optical read head, be equipped with.
Described optical compensation device is a sheet glass.
Described optical compensation device is a transparent plexiglass plate.
The present invention has strengthened the refraction effect of light beam by add the optical compensation device on the optical read head of existing Blu-ray Disc player optical system, causes focus spot smaller, reaches the diameter of regulation.Thereby make blue light mother disc player of the present invention directly can play blue light mother disc.
Description of drawings
Fig. 1 is that existing Blu-ray Disc laser reads synoptic diagram.
Fig. 2 is the physical construction synoptic diagram of the data fetch device of blue light mother disc player in the embodiment of the invention.
Fig. 3 is that blue light mother disc laser reads synoptic diagram in the embodiment of the invention.
Wherein: 1, blue light mother disc, 2, the disc rotation platform, 3, sheet glass, 4, optical system and precise motion topworks, 5, substrate, 6, protective seam, 7, optical read head, 8, Blu-ray Disc.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and preferred embodiment.
As can be seen from Figure 1 blue light mother disc player comprises disc rotation platform 2, optical system and precise motion topworks 4, optical system and precise motion topworks 4 comprise optical read head 7 and associated optical system, two-way topworks and associated coupling mechanism, are provided with sheet glass 3 on optical read head 7.
The difference of the blue light mother disc player among Fig. 1 and original Blu-ray Disc player only is that the optical read head 7 of blue light mother disc player is provided with sheet glass 3 as the optical compensation device, and Blu-ray Disc player optical read head 7 does not have sheet glass.
As can be seen from Figure 2, blue light mother disc 1 only comprises substrate 5, does not have protective seam 6.Blue light mother disc 1 is placed on the rotation platform 2 by clamper, and rotation platform 2 drives disc rotation.The blue light that optical read head 7 sends causes focus spot smaller through having strengthened the refraction effect of light beam behind the sheet glass 3, reaches the diameter of regulation.Thereby make blue light mother disc player directly can play blue light mother disc.Certainly, the optical compensation device can also adopt transparent plexiglass plate.
During use, at first, blue light mother disc is placed on the player pallet.Then, start player, and realize reading of stamper data by related display device.Therefore use the player among the embodiment, can conveniently read the information on the blue light mother disc, and can make preliminary test, can be widely used in data read and the Characteristics Detection and the evaluation field of blue light mother disc the performance of stamper.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (1)
1. blue light mother disc player, comprise Blu-ray Disc player optical system, Blu-ray Disc player optical system comprises optical read head, it is characterized in that, on optical read head, be equipped with the refraction effect that can strengthen light beam, cause focus spot smaller, thereby make the diameter of focus spot reach the optical compensation device of specified diameter; Described optical compensation device is sheet glass or transparent plexiglass plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101254217A CN101256785B (en) | 2007-12-21 | 2007-12-21 | Blue light mother disc player |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101254217A CN101256785B (en) | 2007-12-21 | 2007-12-21 | Blue light mother disc player |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101256785A CN101256785A (en) | 2008-09-03 |
| CN101256785B true CN101256785B (en) | 2011-12-07 |
Family
ID=39891533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101254217A Expired - Fee Related CN101256785B (en) | 2007-12-21 | 2007-12-21 | Blue light mother disc player |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101256785B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1782747A (en) * | 2004-10-20 | 2006-06-07 | 日立麦克赛尔株式会社 | Laser lens with phase compensator and laser lens apparatus using the same |
| CN101004926A (en) * | 2006-07-19 | 2007-07-25 | 清华大学深圳研究生院 | Light path structure for picking up signal in laser reading head |
-
2007
- 2007-12-21 CN CN2007101254217A patent/CN101256785B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1782747A (en) * | 2004-10-20 | 2006-06-07 | 日立麦克赛尔株式会社 | Laser lens with phase compensator and laser lens apparatus using the same |
| CN101004926A (en) * | 2006-07-19 | 2007-07-25 | 清华大学深圳研究生院 | Light path structure for picking up signal in laser reading head |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101256785A (en) | 2008-09-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20121221 |