TW200423113A - Test disk - Google Patents

Abstract

A test disk for the adjustment of a pickup capable of interchangeably reproducing different types of disks, which is formed by laminating a plurality of recording layers different in recording density in which each recording layer is provided with a signal recording surface recorded in a fixed form. With this test disk, the change of disks and the adjustment operation after a disk is changed can be omitted in the adjustment of the pickup since a plurality of recording layers different in recording density are laminated in a disk. Moreover, the adjustment of the pickup can be performed precisely since there is no difference in the disk itself and the state the disk being chucked that occur when a disk is changed.

Description

200423113 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to test discs, and in particular, to stacking a plurality of recording layers with different recording densities, and setting a signal recording surface recorded in a fixed form on each recording layer. It is used to adjust the test disc for interchangeable reproduction pickup. [1] [Prior Art] An example of a conventional test disc is disclosed in Patent Document i. In the prior art, a test disc adjusted for a piekup pickup is used. The pickup for the playback device is a player that can reproduce CDs for CDs or DVDs with different substrate thicknesses. (Hereinafter referred to as interchangeable pickup). The test disc is a disc made by bonding a plurality of optical discs with ultraviolet curing resin in such a manner that a laser beam can be used to reproduce the optical discs from the same direction. Each signal recording surface in the frame is in a different format. Formed in different positions in the radial direction. With this prior art, in terms of confirming whether the interchangeable reproduction pickup can correctly reproduce the discs for each disc, it is not necessary to replace the discs, thereby improving the accuracy of the pickup adjustment. [Patent Document 1] Japanese Patent No. 2983920 [Summary of the Invention] [Problems to be Solved by the Invention] In recent years, for a Blu-ray disc (Blue ray disk) and an advanced optical disc (a 〇D; Advanced Optical • We have spared no effort in the development of what we call Advanced Optical Storage (315505 5). At present, almost all DVDs are therefore expected to be useful for the future. …: Both CD playback, disc playback and playback of high-density eastern films such as discs or AOD's also require 4 ^ ^ H $ ^ J into low-level paint such as CD or DVD Degree of backward compatibility of disc reproduction. Low, however, due to the difference in recording density, the size of ^ •• 2 notes), the pits of the gate ^ (pit 'C recording target claws, pitch (pltch), modulation method of the stop signal of the substrate, etc.) -'And remember that different discs can perform the c-cube pickup of the tablet to make it difficult to reproduce the ^, A cymbals. The reason is because of the discontinuity, the increase of ^' s degree, and so on. The specifications of the pull pull: t, the clerk is strict 'requirements for the accuracy of the pickup's precision. [Technical means to solve the problem] The first invention is a multi-layer recording with different recording densities Layer, the 2 recording layer is provided with a signal recording surface recorded in a certain form for a test disc adjusted for use and reproduction ", which is characterized in that the aforementioned signal-surface-is based on the Blu-ray Disk (Blue_ray Disk) It is formed according to the specifications. In addition, the signal recording surface is formed by dividing the readout area. Alternatively, a wavelength-selective multilayer film is formed on the signal recording surface. The second invention is a layering of different recording densities. A plurality of recording layers, and each recording layer Test discs with signal recording surfaces recorded in a fixed format for replacement of interchangeable pickups are characterized in that one of the aforementioned signal recording surfaces is based on Advanced Optical Storage (Advanced ptieai Storage). The signal surface formed by the specifications. 315505 6 200423113 In addition, it is formed by dividing the readout area on the signal recording surface. Alternatively, a multilayer film with wavelength selectivity is formed on the signal recording surface. [Function] Test discs are laminated It has a signal memory surface and partially forms the readout area. Therefore, as long as the pickup is moved, the laser light that reproduces the signal recording surface can be irradiated in each readout area. When using the test disc to adjust the interchangeable pickup, , Because the adjustment of different signal recording surfaces does not need to exchange discs, the exchange operation and time can be omitted. It is expected that the adjustment of the center offset or tilt of each disc when disc exchange is not required can be shortened. Working time (taet time). In addition, because the disc itself and the clamped tons are not caused by the disc exchange, the reliability is obtained. High evaluation can be used to adjust the pickup with high accuracy. One of the signal recording surfaces of the above-mentioned highly reliable test disc is a Blu-ray disc or AOD, so that the high-density disc reproduction machine has It is also compatible with the backward compatibility of the reproduction of low-density discs. In addition, a read-out field is not formed separately on the signal recording surface, and a multilayer film with wavelength selectivity is formed. The multilayer film makes the reproduction wavelength of the reproduction recording surface The laser light is reflected, and the laser light having a reproduction wavelength on the recording surface opposite to the reading surface is transmitted. In this way, when the pickup is adjusted using a test disc in which the multilayer film is formed on the recording surface, No need to move into the formation state, as long as the wavelength of the laser light is changed, each disc can be adjusted. Therefore, fa1 at the time of adjustment can be further shortened, and the reliability of the evaluation material f can be improved. [Effect of the invention] 315505 7 200423113 According to the present invention, since the difference in the state of the disc caused by the disc exchange when the interchangeable pickup is interchanged is not adjusted, the shark can be adjusted with high precision, and it can be used for high-density discs Film and low density discs. In addition, by the present invention, the operation of disc exchange and the adjustment time and operation required to accompany the disc exchange can be omitted, and the adjustment can be performed quickly. Regarding the above-mentioned objects, other objects, features and advantages of the present invention,

This can be clearly understood from the detailed description of the following embodiments with reference to the drawings. [Embodiment] First Example The test disc 10 of the i-th embodiment of the present invention shown in Fig. 1 is reproduced by an alum pickup device 12. The right side of FIG. 1 is the inner peripheral side of the test disc 10, and the left side is the outer peripheral side. The test disc 10 comprises three recording layers 14, 20 and 26 stacked. The first recording layer 14 includes a first substrate 16 and a protective layer 18 laminated thereon, the second recording layer 20 includes a second substrate 22 and a laminated layer 24, and the third recording layer 26 includes a third substrate 28 and The bonding layer 30 is laminated on it. The material of each substrate must be a transparent material. In addition, a glass substrate is preferable for the reason that no warpage occurs, but transparent resins such as PC (polycarbonate 6mPMMA (polyacrylic acid)) can also be used. In addition, the bonding layers 24, 30, and the protective layer The material of 18 is a transparent UV-curable acrylic resin with a short curing time as #, but other transparent resins can also be used. The first substrate 16 is formed with a record of the "skin length laser light 32" and 315505 8 200423113. The first signal of the first signal is recorded, and Q1 now has the recording surface 34, and the second substrate 22 is formed with the second signal of the second signal which can be reproduced with the second wavelength laser. The signal recording surface 38 is the third signal recording surface 42 which is formed on the substrate 28 and records the third signal recording surface which can be reproduced with the third wavelength laser light 40. The signal recording surface 3 4 , 3 8 and 4 9 are used as readout areas and are covered by Ming's reflective film 44. $ # 刀 W 'Youdi 1 signal recording surface 34 to 3rd signal recording surface 42' Out of the field wi_2 and w are sequentially distinguished from the outer peripheral side to the inner peripheral side. In addition to materials, alloys of silver, indium, chains, and alloys (Ag7-Sb_Te series), or alloys of errors, alloys, and alloys (Ge-Sb-Te system) can also be used. In addition, in each readout field wl, w2, and w3 can also be arranged sequentially from the outer periphery side to the inner periphery side, and can be arranged in different orders. In this example, specifically, the ^ th signal recording surface M, the 2nd signal recording surface 38, and the 3rd signal recording surface M The signal recording surfaces 42 are formed as 2W CD (Compact Disk) ^ DVD (Digital Versatile

DlSk), and the signal surface (pit or groove) of the Blu-ray Disc specification. Therefore, the first wavelength, the second wavelength, and the third wavelength are, for example, 78 nm, 65 nm, and 450 nm. In addition, the substrate thickness hi of the CD pickup surface side (the side on which the pickup is continued) is 1.2 mm, the substrate thickness h2 of the DVD is 0.6 mm, and the substrate thickness h3 of the Blu-ray disc is 0.1 mm. The normal thickness h 1 + $ ′ of the disc 10 is relatively thin compared with the disc when the thickness Θ of the protective layer 18 is a number # m, so it can be approximated to hl = 12mm. The thickness sl of the first substrate 16 is obtained by Equation 1, and the thickness of the second substrate 16 315505 9 200423113 degrees s2 is obtained by Equation 2. However, the thickness of the bonding layer 24,%, is a factor of ten. The thickness S3 of the third substrate 28 is h3 = 0.lmm. [Equation 1] h 1 — h2 — π == 0.6- α [Equation 2] a h2-h3

In addition, there are three signal recording surfaces for CD, DVD, and Blu-ray discs, but only two signal recordings of compatible recording pickup specifications ⑽ and recorded surfaces such as DVD and Blu-ray discs can be formed. surface. In order to adjust the regenerative pickup 12, the laser beam is used to illuminate the ψ 配置 < η out of the field of the recording surface with laser light, and then reflected by the reflective film 44 detected by the pickup 12 Well > f + to adjust. At this time, when the reproduction is performed, the pickup device 1 will illuminate the readout collar lL a! ^ Y X 2 of the first signal 36 on the second signal recording surface 38. In addition, when the Blu-ray disc is reproduced, the pickup 12 is moved inward, and the laser light 40 is irradiated onto the readout collar of the third signal e recording surface 42.娀 1 „... ^,-, And when the CD is being reproduced, the pickup 12 is moved to the outside,” The Ubita light 3 2 is irradiated on the reading area w 1 〇, the surface Γ :: : When a recording layer is stacked in a disc and the readout area covered by the anti-44 is formed in the part of each signal record, it is not necessary to change the disc. Just move and wee cry Xunyi 12 '. The laser light is irradiated on the recording surface of each frame, so the discs and cards can be quickly exchanged with "^^". "The parent of the right film is changed." Sadness is different, '仏 closing A μ ice — J will cause the disc status in the evaluation data 315505 10 200423113: factor. However, using [] test discs can avoid the above problems, and the pickup can be adjusted accurately. In addition, "the other data shown in Figure 2 are well-known data", for example, "the shortest pit length" refers to the shortest pit length that can be read by laser light. The "recorded track pitch" means the distance between adjacent record holders. "Light spot diameter" refers to the diameter of the light spot of the laser light shining on the signal recording surface. "Number of openings" refers to the value that determines the resolution of the objective lens of the pickup and the depth of focus. "The larger the number of openings", the higher the resolution. The more laser light is obtained, the relative: the depth of focus becomes shallower. "Wavelength" means the wavelength of laser light radiated by a semiconductor laser. The manufacturing method of the test disc 10 of the embodiment of ... will be described with reference to Figs. 3 to 6. The i-th substrate 16 for forming the i-th recording layer 14 has a mask = the n-th recording surface 34 shown in Fig. 3, which is made of, for example, a light-transmitting resin previously described by injection molding Made. Then, a portion other than the read-out area of the first signal recording surface 34 is shielded, and a reflective film M with an inscription as shown in FIG. 3 (B) is formed by subtractive plating or the like. Then, it is covered with a protective layer 18 from above to form a third recording layer 14. &Amp; Brother 1 Lu Ji The second base plate 22 on which the second signal recording surface μ is formed on one surface of Figure 4 (A) is made by injection molding using a transparent resin. An aluminum reflective film 44 is formed on the read-out collar 6 of the second signal recording surface 38 by sputtering or the like. In addition, the third substrate of FIG. 5 (A) and μ 7 are formed by forming a third signal recording surface 4 2 ′ on one surface of the substrate, and it is produced by injection of Π 315505 200423113. On the third signal recording surface 42, as shown in FIG. 5 (B), a reflection film 44 is formed in a portion other than the readout area between the first signal recording surface 34 and the second signal recording surface 38. The three substrates 16, 2 2, and 2 8 produced by the knife are shown in FIG. 6 'are bonded with ultraviolet curing resin 4 6 and irradiated with ultraviolet rays to cure ultraviolet curing resin 4 6 to form the seventh figure Test disc.

In addition, although the manufacturing method of the three substrates is described here using injection molding as an example, a 2P (Photo Polymer) molding method may be used. In addition, another manufacturing method of the test disc i 0 will be described with reference to Figs. 8 to 11. A reflective film 44 and a protective film 18 are formed on the second soil plate 16 manufactured by the same injection molding method as the above-mentioned manufacturing method, and a reflective film 44 is formed on the second substrate 22. Laminate the two bases with UV curing resin 40

The plates 16 and 22 are formed as a bulk layer 48 of the first recording layer 14 and the second recording layer 20 shown in FIG. A 3P recording layer 26 is formed on a prefabricated body layer 48 by a 2P molding method. For example: a mold paste a body layer 4 8 ′ provided with a third signal recording surface 42 is filled with a photo-curable resin, and the resin is hardened by irradiating ultraviolet rays from the integrated layer side 4 8, as shown in FIG. 9. An ultraviolet curing resin layer 30a having a third signal recording surface 42 is formed on the integrated layer 48. A part of the complex q2 Λ is masked outside the read area of the recorded surface 42, and a reflective film 44 of aluminum is formed by means of a coin key (Fig. 10). Finally, a protective film is affixed to the third signal recording surface 42 or a transparent tree is embedded by spin coating or the like to form a test disc 12 in which the three recording layers are laminated as shown in FIG. 11 12 315505 200423113 In addition, here, in the step of forming the third recording layer 42, an ultraviolet curable resin layer 3a having a signal recording surface 42 is directly disposed on the body layer 48, which is one of the first recording layer 14 and the second recording layer 20. However, a UV-curable resin layer 30 having a signal recording surface 42 may be separately prepared, and then it may be attached to the integrated layer 48. Second Embodiment The test disc 50 of the second embodiment of the present invention shown in Fig. 12 is reproduced by the pickup 12. The right side of Fig. 2 is the inner peripheral side of the test disc 50 and the left side is the outer peripheral side. The test disc 50 includes three recording layers 14, 20, and 26 stacked. The structure, material, manufacturing method and reproduction method of the pickup layer 12 of each redundant recording layer are the same as those of the first embodiment, and their descriptions are omitted. However, the formation region of the 'reflection film 44 is different from that of the first embodiment. The first signal recording surface 34 of the first substrate 16 is entirely formed with a reflective film formed by sputtering 44 ° on the second signal recording surface 38 and the inner periphery outside the readout area w1 of the first signal recording surface 34. A reflective film 44 is formed in the side area. A reflective film 44 is formed on the inner side of the readout area W1 and w2 of the first signal recording surface 34 and the second signal recording surface 38 of the third recording surface 42 of the third machine 44 ° Even if the reflective film is formed as described above, The readout areas w1, w2, and w3 'are also the same as those in the first embodiment, from the first signal recording surface 34 to the third σίΙ. The recorded Φ 42 is sequentially arranged from the outer peripheral side to the inner peripheral side. Third Embodiment 13 315505 200423113 ★ As shown in Fig. 13 The meaning is reproduced by the pickup 12. The test disc 52 in the third embodiment of the first month is profitable. The right side is the inner peripheral side of the test disc ，, and the test disc 52 encloses the two recording layers 14 and 5 4 of the Zhan Tianji 屛 6.筮 1. Since the material of the recording layer 14 and the test sibling 1 and the film 52 are discarded, their explanations are omitted. /, Only the same example,

Brother 2 5 has a recording layer 5 4 that contains Chu Qi 柅 a L 3 brother 2 substrate 56 and a bonding layer 5 laminated on the 笫 9 substrate 56 and has a recording surface 62 and a substrate on the brother 21 with a 2a signal. Heart Tiger § Recorded surface 66, the 2a signal recording surface ... There is an h signal that can reproduce laser light 2 δ at the 2a wavelength, and the recording signal 66 records the 2a signal of the energy alumina. Each signal is recorded, "Pi Nagata shot first 64th regeneration. , Part or all of the surface, the above-mentioned parts are shaped as the "reflection film 44", and the areas wl, w2a are taken out; 5 a is, the first signal recording surface 3 4, and the younger brother 2 a is not recorded 6 2 and 9 k Lu Kong 5 tiger g self-recording collar ό ό readout collar 0 Λ The shells are arranged in order toward the inner peripheral side and the w2b is from the outer peripheral side. In addition, the read-out fields wl, w2a, and w2b It is arranged in two from the outer peripheral side to the inner peripheral side, but there is no restriction on the order. In this embodiment, it is & ^! Μ α is integrated, while Lu Di 1 ’s signal recording surface 34, 2a Lu Kong ’s § recorded surface 6 2 and 2 b are lacking * ^ 4 books; /: ζτ > Jiuyu yelled at 5 recorded surface 66, The signal surface is formed according to the specifications of CD, DVD and Na shown in Figure 14. Therefore, the first wavelength, the second wavelength, and the second wavelength described above are, for example, 780 nm, 650 nm, and 405 nm. In addition, the substrate thickness Η of the read side of the CD is 1.2 mm, and the thickness h2 of the substrate of the DVD and Na is 315505 14 200423113.

〇.6mm. The point M A of the overall thickness of the disc 52 can be approximately hl = l 2 mm due to the thickness of the protective layer 18. The thickness s 1 of the substrate 16 from Shan Zhi, a Le 1 is 0.6 mm. And the thickness of the substrate of the brother 2 s4_ = In addition, there are 3 signal marks and facets on the CD and DVD; 5 Λ A knee & taxi and A〇D, but it can only be formed to cooperate with the replacement w / Fu Xi Xin 恣 恣 12 specifications of the signal brother recording surface, such as * _ and _ 2 signal recording surface. The adjustment of the interchangeable pickup 12. The output of the & i series is to move the pickup 12 to the output, 64 to read out the read-out fields w1, w2a arranged in the test disc 52. And w2b, post e ^ ^ 1 The leader quotes the way the pickup 12 detects the light reflected by the shooting film 44. The type of claw is inserted into the 0. That is, when the AOD is reproduced, the pickup 12 will pick up the thunder. Shooting light; α α from the body, especially 4th, shot on the 2b signal record toward the outer periphery: out of the field. Pick-up when playing a DVD

Zhou: Move 'to irradiate the center of the reading field with laser light 60, and perform CD output for two days, then move the pickup to the outer side, and irradiate reading field W1 with laser light 62. As described above, the recording layer is laminated on a test disc 52, and each of the: and 彔 planes is distinguished. 'Reading = is formed in the-part of each signal recording plane'. Make quick and high-precision adjustments. Next, a method of manufacturing the test disc W will be described with reference to FIGS. 15 to 8. First, the first recording layer 14 is produced by the same method as in the first embodiment, as shown in Figs. 15 (A) to 15 (C). Next, it is made by injection molding 315505 15 423113 At first, the second substrate 56 has a surface 16 as shown in FIG. 16 (A).

The 2a flood record surface 62 and the first signal record surface are different. Next, the readout area wi is shielded on the signal recording surfaces 62 and 66 described above, and an aluminum reflection film M shown in FIG. 16 (B) is formed by sputtering or the like. Then, the substrates 16 and 56 formed separately are bonded together with an ultraviolet curing resin 46 as shown in FIG. 17 to prepare a test disc 4 of FIG. 18 and a fourth embodiment of the present invention shown in FIG. 19. The test disc 68 was regenerated using 1 2 of Caikouxun. In Fig. 9, the right side is the inner peripheral side of the test disc 68, and the left side is the outer peripheral side. The test disc 68 includes three recording layers 14, 20, and 26 stacked. The structure and material of each recording layer are the same as those of the first embodiment, and a description thereof will be omitted here. However, the 'reading field' is different from the first embodiment. The positive systems of the signal recording surfaces 38 and 42 are covered by a wavelength-selective multilayer film and η, and the entirety of the i-th signal recording surface 34 is covered by a reflective film material. In the example, the reading field of each signal recording surface is a partial field, but in this embodiment, the reading field is comprehensive of each signal recording surface. The wavelength-selective multilayer film formed on the signal recording surface is a multilayer film that reflects the laser light that reproduces the signal recording surface and transmits the laser light that reproduces the signal recording surface on the side opposite to the reading surface. Specifically, the first signal recording surface 34, the second signal recording surface 38, and the third signal recording surface 42 are the specifications of the CD, d vd, and Blu-ray 315505 16 200423113 shown in Figure 2, respectively. The wavelength, the second wavelength, and the third wavelength were 780 nm, 650 nm, and 405 nm, respectively. The multi-layered film 70 having the wavelength selectivity of the DVD reflects the laser light 36 with a reproduction wavelength of 65 nm and transmits the laser light 32 with a reproduction wavelength of 78 nm on the CD located on the opposite side of the reading surface. The multilayer film 72 of the monitor disc reflects the laser light 40 having a reproduction wavelength of 405 nm, and transmits the reproduction light having a CD and a DVD having a reproduction wavelength of 6511111 and the lavish respectful light 32 and 36. The CD has no signal recording surface on the opposite side of the reading surface and does not need to transmit laser light, so it forms a reflective film of aluminum that is totally reflective. The adjustment of the interchangeable reproduction pickup 12 is made by irradiating the laser light 32,% '40 of the reproduction wavelength of each signal recording face center 38 and 42 to each recording surface 34, 38, and 42, and then using the pickup. 12 is performed by detecting the light reflected by the multilayer film, 72, or the reflective film 44. That is, when the resident disc is reproduced, the pickup 12 emits a laser with a wavelength of 40 nm: 40 is irradiated to the third signal recording surface 42. Then, when the DVd is reproduced, the signal is picked up and the wavelength is changed. For the laser light of ㈣⑽, use Zhaoxun 旒 recording surface 38, and when CD reproduction is performed, Xun cry 1 9 i Ϊ mt spears move m 12, and use the laser light 32 whose wavelength is changed to 78〇1 ^. : In the example to the third embodiment, since the reading film “Wang reflects U ’s reflection film 44 on the signal recording surface,” the disc is being reproduced more than once: the ΓΓ pickup 12 allows the laser light to illuminate each reading area "On the move" produces minor changes such as disc tilt, and :: Sensor / 2 fine adjustment. In contrast, in the fourth embodiment, the pickup 12 does not need to be moved, as long as the wavelength of the laser light is changed. 315505 17 200423113 The reproduction of each disc can improve the adjustment accuracy of the pickup 12. Next, the manufacturing method of the test disc 68 is shown in FIG. 20 to FIG. 28. The other manufacturing methods are shown in FIG. 20 to FIG. Μ. However, the two manufacturing methods are the same as those in the i-th embodiment, so the description is omitted. Instructions. However, the read field of the signal recording surface is the same as that of the first embodiment. That is, as shown in FIG. 20 (a), a reflective film 44 is formed on the entire surface of the i-th signal recording surface 34, as shown in FIG.

(Figure 22, Figure 22 ^) and Figure 27 on the second signal recording surface 38 and the third signal recording surface 42 are all formed using a sputtering method or a vacuum evaporation method to form a multilayer film with wavelength selectivity7. And 72. In addition, the reflective film 44 or multilayer film M 70 and 72 may be formed on a part of the signal recording surface instead of being comprehensive. However, such a central project 丨 丨 Fork also performs other shielding and other operations. In the process of manufacturing test discs, when bonding the respective recording layers, as in the case of the first resin 46, the third embodiment is formed by reflecting the ultraviolet radiation of the resin 46. However, the wavelength selectivity 1: At the same time, the transmittance of the ultraviolet rays is increased, and it can fit the record in a short time. Fifth Embodiment The fifth embodiment of the present invention shown in FIG. 29 is reproduced by the pickup 12. The 29th R &… 1 disc 74 is on the positive side, and the left side is the outer peripheral side. The inner peripheral test disc 74 on the right side is the test disc. It contains two laminated recording layers. The third embodiment is the same. The description is omitted. Therefore, the description is omitted here. 315505 18 200423113 However, the readout area is different from that in the third embodiment. The entire signal recording surfaces 6 2 and 66 are multilayered with wavelength selectivity. The films 70 and 76 are covered, and the entirety of the first signal recording surface 34 is covered by the aluminum reflective film 44. Specifically, the first signal recording surface 34, the 2a signal recording surface 62, and the 2b signal recording surface 66 Are the specifications of CD, DVD, and aOD, as shown in Figure 14, and the first, second, and 2b wavelengths are 78nm, 65nm, and 405nm. The multilayer film 70 of DVD enables reproduction The laser light 60 with a wavelength of 65nm is reflected and transmitted through the laser light 32 with a reproduction wavelength of 780nm located on the opposite side of the CD. The multilayer film 76 of the AOD reflects the laser light 64 with a reproduction wavelength of 4.05nm and makes the CD Laser light 32 with a reproduction wavelength of 78nm is transmitted. There is no information on the CD due to the opposite side of the reading surface. The recording surface does not need to transmit laser light, so a total reflection aluminum reflective film 44 is formed on the entire signal recording surface 34. In addition, since the multilayer films 70 and 76 of DVD and AOD are both lightning capable of a wavelength of 78nm. The transmitted light 32 is a multilayer film that reflects the wavelengths "such as claws and laser light 60 and 64 at 405 nm, respectively. Therefore, it can also be a film that is separated between 65 nm and the top ridge. For example, in order to transmit laser light having a wavelength exceeding 700 nm and reflecting laser light having a wavelength below 700 nm, it is not necessary to form the two multilayer films of the above-mentioned DVD and Gang, but can be used together. Use 1 film. … Regarding the adjustment of the pickup, since DVD and AOD are also located in the second Xunjilu ’, it is impossible to reproduce 3 types of CDs, translations, and A # without moving the pickup. However, 'refer to FIG. 29, it is clear that when A OD is reproduced in 315505 19 200423113, the laser 12 is irradiated with laser light 6 4 on the signal recording surface 66 of A OD, and then there is no need to move the pickup. 12 As long as the wavelength of the laser light is changed from 405 nm to 78 nm, the laser light 32 can be irradiated on the signal recording surface 34 of the cD. In addition, the same is true for the regeneration of the coffee. The laser light 60 is irradiated on the signal recording surface 62 of D v D, and then the laser

The wavelength of the incident light can be irradiated from 650nrn to 5 R 7th Street nm〇 to 780 nm.

On the signal recording surface 34 of the CD. Next, a method of manufacturing the test disc 74 will be described with reference to Figs. ^ The method of making each recording layer and the method of bonding are the same as those in the third embodiment, so the description of β is omitted here. However, the readout area of the signal recording surface is different. The 帛 1 signal recording surface is shown in Fig. 30, and a reflective film 44 is formed on the entire surface. The second signal recording surface is as shown in Fig. 31 (i). The γ masks the 2a signal recording surface 62 and uses the sputtering method or vacuum evaporation method to form the 2b signal recording surface 66 on the inner peripheral side with wavelength selectivity. Evening sound 76: The area where the multilayer M 76 is formed is shielded, and as shown in FIG. 31 and FIG. 2A, a wavelength-selective D-shaped uniform film 70 is formed on the signal recording surface 62 of the 2a. FIG. 1 is a sectional view showing an embodiment of the present invention. Figure 2 shows the cd, DVD, and age "ratings and reproduction conditions of the embodiment of Figure 1. Figures 3 (A) to 3 (C) of the optical disc are the manufacturing methods of the embodiment of Figure i. Figures 4 (A) to 4 (B) of the 1 substrate are the manufacturing method of the 315505 20 200423113 of the substrate of the 2nd figure. Figures 5 (A) to 5 (B) are the 1st figure The third substrate manufacturing method of the embodiment. FIG. 6 is the bonding method of the embodiment of FIG. 丨 FIG. 7 is the completed test disc of the embodiment of FIG. 1 and FIG. 8 is the implementation of FIG. In another manufacturing method of the example, a body layer is formed by bonding the first substrate and the second substrate. FIG. 9 is a method of manufacturing the third signal recording surface in another manufacturing method of the embodiment of FIG. 丨. The figure is Fig. 1 shows a method for forming a reflective film in another manufacturing method of the embodiment shown in Fig. 1. Fig. 11 shows a test disc formed according to another manufacturing method of the embodiment shown in Fig. 1. 'Fig. 12 shows another embodiment of the present invention. Sectional view of the embodiment. FIG. 13 is a cross-sectional view showing still another embodiment of the present invention. FIG. 14 is a view of the cd, DVD and Blu-ray disc of the embodiment of FIG. 13 Setting values and regeneration conditions. Figures 15 (A) to 15 (0 is the manufacturing method of the first substrate in the embodiment of Figure VII. Figures 16 (A) to 16) is the embodiment in Figure 13. The manufacturing method of the second substrate. Figure 17 shows the bonding method of the embodiment of Figure 13. Figure 18 shows the test disc completed by the bonding of the embodiment of Figure i 3. Figure 19 shows the display. A cross-sectional view of yet another embodiment of the invention. 315505 21 200423113 1 9 Figures 20 (A) to 20 (C) of the embodiment are manufacturing methods. 21 (A) to 21 (B) is the manufacturing method of the 2nd board | substrate of the embodiment of FIG.19. (A)-22 (B) is the manufacturing method of the 3rd board | substrate of the embodiment of FIG.19.

Fig. 23 is a bonding method of the embodiment in Fig. 19; Fig. 24 is a completed test disc of the embodiment of Fig. 19; Fig. 25 is a body layer formed by bonding a first substrate and a second substrate in another manufacturing method of the embodiment shown in Fig. 19; Fig. 26 is a method of manufacturing the third signal recording surface in another manufacturing method of the embodiment shown in Figs. Fig. 27 is a method for forming a reflective film in another manufacturing method of the embodiment shown in Fig. 19; Fig. 28 is a test disc formed according to another manufacturing method of the embodiment shown in Figs. Fig. 29 is a sectional view showing still another embodiment of the present invention. Figures 30 (A) to 30 (c) show the manufacturing method of the first substrate of the embodiment shown in Figure 29. Figs. 31 (A) to 31 (B) show a method for manufacturing the second substrate of the embodiment shown in Fig. 29. Figs. Fig. 32 is a bonding method of the embodiment in Fig. 29; Fig. 33 is a completed test disc of the embodiment of Fig. 29. [Explanation of component symbols] 22 315505 200423113 10, 50 52, 68, 74 test disc 12 pickup 14 first recording layer 16 first substrate 18 protective layer 20 ^ 54 second recording layer 22 second substrate 24 > 30 5 8 bonding layer 26 third recording layer 28 third substrate 30a UV curable resin en 32 first wavelength laser light 34 first signal recording surface 36 second wavelength laser light 38 second signal recording surface 40 third wavelength laser light 42 second 3 Signal recording surface 44 Reflective film 46 Ultraviolet hardening resin 48 Integrated layer 60 2a wavelength laser light 62 2a signal recording surface 64 2b wavelength laser light 66 2b signal recording surface 70, .72 76 Multilayer with wavelength selectivity Membrane wl, w2, w2a, w2b, w3 Readout area 23 315505

Claims (1)

200423113 • Scope of patent application: 1. A test disc that is laminated with multiple recording layers of different recording densities, and each of the foregoing recording layers is provided with a signal recording surface recorded in a fixed form for interchangeable regeneration pick up The test disc for the adjustment of the device is characterized in that one of the aforementioned signal recording surfaces is a signal surface formed according to the specifications of the Blu-ray disc (Blue_ray D "k) '. 2 · As measured in the first item of the patent scope The ancient disc η Gan Shim is called a cymbal, which is formed by distinguishing the field of t buy on the signal δ recorded surface. 3. For example, the test disc of the first scope of the patent application, which is in the aforementioned The signal § has a multi-layered film with wavelength selectivity on the recording surface. 4. A test disc, which is a stack of recording layers with different recording densities, and each of the foregoing recording layers is provided with a signal recording surface recorded in a certain form. The test disc used for the adjustment of the interchangeable reproduction pickup is characterized by one of the aforementioned signal recording surfaces formed according to the specifications of the Advanced Light Storage (Advanced 〇Ptical St 〇rage). No. 5 _ If the test disc in the scope of patent application No. 4 test, among which "Yi ,, Ί 糸" in the month lj language Fan No. recording surface to distinguish the field of readout and formed. 6 · If the scope of patent application No. 4 In the test disc, a multi-layer film with wavelength selectivity is formed on the aforementioned signal recording surface. 315505 24