摘要:
PROBLEM TO BE SOLVED: To provide an optical pickup device capable of interchanging three types of optical disks of BD/DVD/CD having a plurality of information recording layers with a common objective lens regardless of low cost, and an optical information recording and reproducing device.SOLUTION: If the objective lens of the optical pickup device is used, aberration can be changed in an under (insufficient correction) direction when a wavelength fluctuates to a long-wavelength side. Consequently, aberration that occurs when the temperature of the optical pickup device goes up can be suppressed. Since an objective lens that can maintain stable performance even during temperature change can be provided even in the case that the objective lens is made of plastic, a temperature characteristic during the use of a second optical disk can be made satisfactory. As a result of this, a factor that should displace a coupling lens in an optical axis direction during the use of the second optical disk is eliminated, and the optical pickup device can record/reproduce information to/from an information recording surface of the second optical disk satisfactorily even with the coupling lens fixed.
摘要:
PROBLEM TO BE SOLVED: To provide a lens unit and its manufacturing method capable of precisely positioning and incorporating the lens into a holder regardless of geometric accuracy of the lens side face.SOLUTION: A lens 10 and a holder 20 are connected without having portions positioned each other in relation to a perpendicular direction to an optical axis OA. If geometrical dimensional accuracy of a side face 10c of the lens 10 set at the perpendicular direction to the optical axis OA is low, the lens 10 can be fixed in a precisely positioned state to the holder 20. In a lens unit, the lens and the holder are joined by an adhesive agent. In this case, the lens 10 and the holder 20 can be fixed strongly and moreover, a relative position of the lens 10 and the holder 20 can be easily arranged by the thickness of an adhesion part 41, and the lens 10 and the holder 20 can be relatively and precisely positioned and fixed.
摘要:
PROBLEM TO BE SOLVED: To provide a long stretched film in which occurrence of wavy forms and streaks when stretching the film in an oblique direction is suppressed or occurrence of streaks when coating and curing a surface processing layer after stretching is suppressed, and which can be subjected to continuous oblique stretching, to provide a method for producing the long stretched film, and to provide a long polarizing plate and a liquid crystal display device provided with the stretched film.SOLUTION: In the method for producing the long stretched film in which a parallel slow axis has angle variations within the range of ±0.5° with respect to the width direction of the film, stretching is performed in an oblique direction in such a manner that it has the parallel slow axis at an angle within the range of 10 to 45° with respect to the conveying direction of the long film, and thereafter, both the edges of the film are stretched at an angle within the range of -90 to -70° with respect to the conveying direction and also at a degree of stretching within the range of 0 to 20% by clamping units.
摘要:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a light confining film to manufacture the light confining film containing thermoplastic resin easily and efficiently in a mass production scale, to provide the light confining film manufactured by the same, capable of improving an efficiency of photovoltaic power generation, and to provide a solar cell equipped with the light confining film.SOLUTION: The manufacturing method of the light confining film for a solar cell, having an uneven shape structure on a surface of a film base material containing thermoplastic resin, comprises processes of: coating the film base material containing the thermoplastic resin with a mixed solvent containing a poor solvent; and drying the film base material coated with the mixed solvent.
摘要:
PROBLEM TO BE SOLVED: To provide a method of manufacturing an optical film having sufficiently suppressed thickness unevenness and sufficiently reduced haze.SOLUTION: The method of manufacturing the optical film discharges a solution containing a polymer material from a die 2 onto a continuously travelling support 1 having ≥20°C surface temperature to thereby form a casting bead 21 between the die and the support, while reducing the pressure of the casting bead 21 on the support travelling direction upstream side when forming a cast film 22 on the support. The method is characterized in that. at least the atmosphere 27 of the casing bead 21 on the support travelling direction upstream side is set to be an atmosphere of a low viscous gas having ≤0.0170 mPa s viscosity at 20°C and ≤12.8 g/mwater vapor content.
摘要翻译:要解决的问题:提供一种制造具有足够抑制的厚度不均匀性并充分降低雾度的光学膜的方法。 解决方案:制造光学薄膜的方法将含有聚合物材料的溶液从模具2排出到具有≥20℃表面温度的连续行进的载体1上,从而在模具和载体之间形成浇铸珠21, 同时在支撑体上形成流延膜22时,在支撑行进方向上游侧减小铸造胎圈21的压力。 该方法的特征在于。 至少在支撑行进方向上游侧的壳体凸缘21的气氛27被设定为在20℃下具有≤0.0170mPa·s粘度的低粘性气体的气氛,并且≤12.8g/ m 2 3 SP>水汽含量。 版权所有(C)2012,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide an LED lighting device, an LED lighting fixture and a lens for the LED lighting device capable of obtaining freedom of optical design for performing highly precise light distribution control, and capable of reducing deterioration or light-distribution characteristics change of resin constructing the lens due to heat radiation of the LED.SOLUTION: The lens arranged at a light emission side of an LED light source having a plurality of LEDs includes an incident surface to which emission light from the LED light source enters and an emission surface from which the emission light is radiated outside. Further, the LED light source and the incident surface of the lens are of non-contact. Moreover, while the lens consists of plastics, 4≤Φ≤7 where Φ(mm) is a maximum size of the lens cross-section perpendicular to the optical axis, 2.8≤LL≤4.5 where LL(mm) is a length of a foot part of the lens in an optical axis direction, and 1.8≤SD≤2.2 where SD(mm) is a minimum distance between the light emission part of the LED light source and the incident surface of the lens in the optical axis direction are satisfied.
摘要:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a separator for a nonaqueous secondary battery achieving an excellent balance between air permeability and mechanical strength and causing only a small amount of dust fall, a separator for a nonaqueous secondary battery, and a nonaqueous secondary battery.SOLUTION: When the components of a separator for a nonaqueous secondary battery containing a polypropylene resin and at least one kind of air permeability enhancing agent are heated to 280°C, the air permeability enhancing agent is in a compatible state. The air permeability enhancing agent is precipitated in a nonspherical shape during a temperature drop of the components of the separator for a nonaqueous secondary battery from the compatible state at 280°C to 100°C at -10°C/min. In the process of manufacturing the separator for a nonaqueous secondary battery, the draw ratio at the extrusion into a film is in the range of 50 to 500. The method for manufacturing the separator for a nonaqueous secondary battery includes at least two drawing steps in the film making direction, and the temperature during the second drawing is higher than the temperature during the first drawing.
摘要:
PROBLEM TO BE SOLVED: To provide a separator having an excellent balance between air permeability and mechanical strength, and to provide a nonaqueous secondary battery prepared therewith.SOLUTION: A separator for a nonaqueous secondary battery contains a polypropylene resin and a β crystal nucleating agent. The separator contains at least one kind of air permeability enhancing agent, and the air permeability enhancing agent is in a compatible state in the raw materials of the separator when the separator is heated to 270°C and is precipitated during a temperature drop from the compatible state to 130°C at 10°C/min. The shape of the precipitate is nonspherical, and the ability of the separator to form a β crystal is 50% or greater.
摘要:
PROBLEM TO BE SOLVED: To provide a polarizing plate which is controlled to prevent a failure in a production process or a sticking process to a liquid crystal cell while having a high optical compensation function.SOLUTION: The polarizing plate has a sandwiched structure of a polarizer with two polarizing plate protective films T1 and T2, wherein films T1 and T2 are cellulose ester films. The films T1 and T2 have a specified relation, and when T1 is subjected to an environmental change from 85°C and 20% RH to 95% RH, the minimum dimensional change rate X by humidity in a film plane satisfies 10≤X≤130 ppm/%RH.
摘要:
PROBLEM TO BE SOLVED: To improve efficiency in generating near-field light and excite or detect light at the same point without polarization dependence.SOLUTION: At least two metal structures 41 are disposed on an end face of a waveguide 11 so as to cross a boundary B between a core 32 and a clad. The two metal structures 41 are respectively formed into a tapered shape with front ends thinner and rear ends thicker, and disposed so that the front ends and the rear ends are positioned in the core 32 and in the clad 33, respectively, and that directions from the rear ends toward the front ends are orthogonal to each other.