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1. 发明专利

JP2001034996A OPTICAL PICKUP 失效
公开(公告)号：JP2001034996A
公开(公告)日：2001-02-09
申请号：JP21166599
申请日：1999-07-27
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HORINOUCHI SHOGO , NAKAJIMA KAZUYUKI , HARUGUCHI TAKASHI , KOJIMA KOKI , GOTO HIROSHI
IPC分类号： G11B7/135 , G11B7/1369 , G11B7/1392
摘要： PROBLEM TO BE SOLVED: To securely correct aberration with a simple configuration without increasing a component for correcting aberration and miniaturize a pickup and improve productivity by controlling the aberration of the emission luminous flux of a condensation means for condensing incidence light at a record medium only by an aberration correction means. SOLUTION: Emission light 96 of an emission point 9a of a light source 9 passes through an optical path division means 12 of a first inclined surface 11a of a second optical member 11, is reflected by an optical path division means 15, and then is converted to a luminous flux 9c by a collimator lens 16. Then, the wave front of transmission light is controlled by an aberration correction means 307, and coma aberration being generated by disk tilt is corrected, thus correcting the wave front of transmission light in advance. DC polarization whose wave front has been adjusted is applied to a 1/4 wavelength plate 308. In this case, a voltage is applied to it and optical anisotropy is generated in the direction of an electric field when viewed from an incidence side by the generated electric field. In this case, the 1/4 wavelength plate 308 is arranged and controlled so that it is inclined by 45 degrees for the DC polarization as circular polarization, and luminous flux 9d is condensed at a low-density optical disk 19 by a condensation lens 17.

2. 发明专利

JP2000123405A OPTICAL HEAD AND INFORMATION REPRODUCING DEVICE USING THE SAME 失效
公开(公告)号：JP2000123405A
公开(公告)日：2000-04-28
申请号：JP29939598
申请日：1998-10-21
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： FUKUDA TATSUO , NAKAJIMA KAZUYUKI , OGUSHI MASUO , TATE SUMIO
IPC分类号： G11B7/135 , G11B7/00 , G11B7/005 , G11B7/0055
摘要： PROBLEM TO BE SOLVED: To make it possible to execute recording and reproducing, etc., at a recording density higher than the recording density determined by a diffraction threshold and to suppress the heat generation in microapertures, the deformation accompanying the same, etc. SOLUTION: The optical head having the constitution to make the light from a light source 101 incident on a slider formed of a translucent material via an optical path 102 has light shielding means 104a to 104c which are disposed on the circumference of this slider and shield the light exclusive of evanescent light. The coefficient of thermal expansion of the material constituting the slider is set below the coefficient of thermal expansion of the material constituting these light shielding means.

3. 发明专利

JPH10247336A OPTICAL PICKUP 失效
公开(公告)号：JPH10247336A
公开(公告)日：1998-09-14
申请号：JP5133097
申请日：1997-03-06
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： FUKAKUSA MASAHARU , MORI TAIICHI , TANIGAWA HIROSHI , KONO HARUHIKO , NAKAJIMA KAZUYUKI
IPC分类号： G11B7/00 , G11B7/135
摘要： PROBLEM TO BE SOLVED: To enhance the space utilization efficiency of optical members, by forming a straight line passing through a light emitting point of a 1st light source and that of a 2nd light source non-parallel with respect to a recording medium surface irradiated with light from the 1st and 2nd light sources. SOLUTION: A luminous flux 2b emitted from a light emitting point 2a of a light source 2 passes through a light path splitting means 6 of a 1st optics member 5, being changed in the direction of polarization from linearly polarized light to circularly polarized light through a quarter-wave plate 4 and made incident on a light path splitting means 15 to transmit almost 100%, being converted into a luminous flux 2c through a collimator lens 16, and being converged into a luminous flux 2d through a condenser lens 17. On the other hand, a luminous flux 9b emitted from a light emitting point 9a of a light source 9 transmits a light splitting means 12, being changed in direction of polarization from linearly polarized light to circularly polarized light through a quarter-wave plate 14 and made incident on the light path splitting means 15, being almost reflected, being converted into a luminous flux 9c through the collimator lens 16, and being converged on an optical disk 19 like the luminous flux 2d through the condenser lens 17.

4. 发明专利

JPH10124912A OPTICAL PICKUP 失效
公开(公告)号：JPH10124912A
公开(公告)日：1998-05-15
申请号：JP28048196
申请日：1996-10-23
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MORI TAIICHI , FUKAKUSA MASAHARU , TANIGAWA HIROSHI , KONO HARUHIKO , NAKAJIMA KAZUYUKI
IPC分类号： G11B7/135
摘要： PROBLEM TO BE SOLVED: To make it possible to converge plural luminous fluxes to the prescribed positions of recording media by using one condenser lens and to reproduce the recording media varying in recording densities by specifying the ratio of the distance B between a second light source and a condenser leans to the distance A between a first light source and the condenser lens to a specific value. SOLUTION: The condenser lens 17 converges the luminous flux 2b from the light source 2 as the luminous flux 2d to the high-density optical disk 18 and converges the luminous flux 9b from the light source 9 as the luminous flux 9d to the low-density optical disk 19. The reflected light of the disk 18 is received by a photodetector 3 and the reflected light of the disk 19 is received by a photodetector 10. The ratio (L2/L1=H) of the distance L2 between the light source 9 and the condenser lens 17 to the distance L1 between the light source 2 and the condenser lens 17 is specified to 0.55

5. 发明专利

JPH09167379A OPTICAL PICKUP AND OPTICAL PICKUP FOR PHASE CHANGE TYPE OPTICAL DISK AS WELL AS THEIR PRODUCTION 失效
公开(公告)号：JPH09167379A
公开(公告)日：1997-06-24
申请号：JP33000795
申请日：1995-12-19
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HIWATARI TATSUYA , MANABE HARUJI , NAKAJIMA KAZUYUKI
IPC分类号： G11B7/125 , G11B7/135
摘要： PROBLEM TO BE SOLVED: To obtain an optical pickup which has a shielding effect to noises, is easily producible and capable of reducing the number of parts by constituting a cap member and base plate of housing member of metallic material and joining these members by a prescribed method. SOLUTION: A housing member of the optical pickup is composed of a substrate 4 and cap 15 which are the metallic members. The substrate 4, on which a light source 1, a light guide member 5, a photodetector 13, etc., are mounted, is formed out of a material contg. one among Fe, FeNi alloy and FeNiCo alloy, is easy to weld and has an effect as an electromagnet shield to the noises. The cap 15, joined to the substrate 4 covering the members forming the pickup, is formed out of a material contg. at least any among FeNi alloy and FeNiCo alloy. Either of the substrate 4 and the cap 5 is provided with a projection to allow easy welding.

6. 发明专利

JPH0935306A OPTICAL PICKUP AND ITS PRODUCTION 失效
公开(公告)号：JPH0935306A
公开(公告)日：1997-02-07
申请号：JP18374095
申请日：1995-07-20
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HIWATARI TATSUYA , MANABE HARUJI , NAKAJIMA KAZUYUKI
IPC分类号： G11B7/12 , G11B7/22
摘要： PROBLEM TO BE SOLVED: To obtain an optical pickup which is good in hermetic closing in the package of the optical pickup, is free from dust and moisture intruded internally and is, therefore, substantially free from malfunctions and trouble and a process for producing the same. SOLUTION: The package of the optical pickup is internally and hermetically sealed. Gas is sealed into the package at the time of hermetic sealing. The dew point of the gas is set at

7. 发明专利

JP2003231317A INKJET RECORDER 审中-公开
公开(公告)号：JP2003231317A
公开(公告)日：2003-08-19
申请号：JP2002032124
申请日：2002-02-08
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： INOGUCHI HIDEHIKO , MIYAZONO YUTAKA , NAKAJIMA KAZUYUKI , TANAKA MASAHARU , MATSUBA HIROYUKI
IPC分类号： B41J2/01 , B41J2/165 , B41J13/00
摘要： PROBLEM TO BE SOLVED: To provide an inkjet recorder in which a paper feed/paper discharge place can be secured inside an apparatus body, replacing ink, supplying papers to the apparatus body, taking out a recorded recording medium and the like can be carried out from a specific one direction, a wrong operation by users is prevented while the ease of operation is provided, and a space in the periphery of the apparatus can be effectively utilized. SOLUTION: The inkjet recorder is provided with a paper feed cassette 10 for supplying the recording paper P, a transfer system for transferring the recording paper P from the paper feed cassette 10, and a recording head 18 for discharging ink towards the recording paper P. A transfer direction of the recording paper P at the transfer system is made different from a direction in which the paper feed cassette is inserted and pulled out. COPYRIGHT: (C)2003,JPO

8. 发明专利

JP2002137501A PRINTER AND PRINT SYSTEM 失效
公开(公告)号：JP2002137501A
公开(公告)日：2002-05-14
申请号：JP2000335493
申请日：2000-11-02
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HAYASHI ZENSHI , MIYAZONO YUTAKA , NAKAJIMA KAZUYUKI
IPC分类号： B41J29/38 , B41J29/00 , G06F3/12
摘要： PROBLEM TO BE SOLVED: To provide a printer and a print system in which only a previously allowed number of print sheets can be printed. SOLUTION: The printer comprises a card interface means 270 for inserting a memory card 300, and means 231 for making a decision whether printing can be carried out or not based on a printable number of sheets previously written in the memory card 300.

9. 发明专利

JP2000259087A SURFACE ILLUMINATOR AND PORTABLE TERMINAL EQUIPMENT USING THE SAME 失效
公开(公告)号：JP2000259087A
公开(公告)日：2000-09-22
申请号：JP6448599
申请日：1999-03-11
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MANABE HARUJI , NAKAJIMA KAZUYUKI , OMORI TAKAHIRO , UEZURU SHINOBU
IPC分类号： G09F9/00 , G02F1/1335 , G02F1/13357
摘要： PROBLEM TO BE SOLVED: To provide a surface illuminator satisfactory in luminance distribution, satisfactory in visibility and small in size even when the number of used light sources of light emitting diodes or the like is a few and the length of a light transmission part is short. SOLUTION: This illuminator is provided with the light transmission plate 2 provided with an incident plane 3a on which light emitted from light source 1 is made incident, reflection surfaces 3b reflecting light entering from the incident plane 3a and a light releasing part 4 for releasing light which is reflected on the reflection surfaces 3b and came by propergating the inside of the plane in a surface shape and a partition 3b suppressing the light emitted from the light source 1 from entering into the vicinity of the light source 1 of the light transmission plate 2 directly with a light transmission part 3.

10. 发明专利

JPH10154344A OPTICAL PICKUP 失效
公开(公告)号：JPH10154344A
公开(公告)日：1998-06-09
申请号：JP31034896
申请日：1996-11-21
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KOJIMA KOKI , HARUGUCHI TAKASHI , NAKAJIMA KAZUYUKI , FURUKAWA FUMINOBU
IPC分类号： G11B7/09 , G11B7/00 , G11B7/123 , G11B7/125 , G11B7/1275 , G11B7/135 , G11B7/1353 , G11B7/1362 , G11B7/1365 , G11B7/1374 , G11B7/139
摘要： PROBLEM TO BE SOLVED: To provide the optical pickup which records and reproduces optical disks having different recording densities, is small in its size, thin in its thickness and low in the power consumption. SOLUTION: The pickup has an objective lens 16, a first optical unit 4 which has light emitting and receiving elements used to record and to reproduce a high density optical disk 17, a second optical unit 8 which has light emitting and receiving elements used to record and to reproduce a low density optical disk, a beam splitter 10 which guides the optical axes of the units 4 and 8 to a same optical axis and a wavelength filter 15 which changes the diameter of the luminous flux made incident on the lens 16 while conducting recordings and reproducings of the disk 17 and the low density optical disk. Thus, recording and reproducing of the high and low density optical disks are easily performed.

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