摘要:
An optical sheet has a large number of cylindrical lens elements provided successively on one of principal faces thereof. The cylindrical lens elements have a hyperboloidal face or a paraboloidal face and have a finite focal distance on the emission side of illumination light. Where a Z axis is taken in parallel to a normal line direction to the optical sheet and an X axis is taken in a direction of the row of the cylindrical lens elements, a cross sectional shape of the cylindrical lens elements satisfies Z=X2/(R+√{square root over ( )}(R2−(1+K)X2)) (where R is the radius of curvature of a distal end vertex, and K is a conic constant).
摘要翻译:光学片具有大量连续设置在其一个主面上的柱面透镜元件。 柱面透镜元件具有双曲面或抛物面,并且在照明光的发射侧具有有限的焦距。 其中Z轴平行于光学片的法线方向取向,并且在圆柱透镜元件的行的方向上取X轴,柱面透镜元件的横截面形状满足Z = X2 /( R +√{平方根超过()}(R2-(1 + K)X2))(其中R是远端顶点的曲率半径,K是圆锥常数)。
摘要:
An optical recording medium has spirally or concentrically formed tracks and capable of an optical recording. The optical recording medium includes a data recording and reproducing area divided into a plurality of zones in the radial direction. One zone is divided into a plurality of sectors respectively having an address area including pits having address information and a data are in which data is only present in grooves. The number of sectors forming each zone is different. An optical disc is formed so that an average reflectance Iadd of the address part and an average reflectance Idata of the data part satisfy a relation expressed by 0.7≦(Iadd/Idata)≦1.3 or 0.8≦(Iadd/Idata)≦1.2.
摘要:
A liquid crystal display, optical sheet manufacturing method, and an optical sheet are provided. The occurrence of moiré is prevented while suppressing a reduction in front luminance. The liquid crystal display includes: a liquid crystal display panel; a light source arranged on a back surface side of the liquid crystal display panel; an optical sheet with a light-condensing property arranged between the liquid crystal display panel and the light source, the optical sheet having a number of irregularities arranged continuously on a principal surface of the optical sheet; and a diffuser sheet arranged between the liquid crystal display panel and the optical sheet. The liquid crystal display is constructed so that when an arrangement pitch of the irregularities of the optical sheet is P [μm], a haze value of the diffuser sheet is H [%], a total light transmittance of the diffuser sheet is Tt [%], and a pixel pitch of the liquid crystal display panel is Pp [μm], the following relationship is satisfied: (H/Tt)·(Pp/P)≧1.6.
摘要:
An optical sheet has a large number of cylindrical lens elements provided successively on one of principal faces thereof. The cylindrical lens elements have a hyperboloidal face or a paraboloidal face and have a finite focal distance on the emission side of illumination light. Where a Z axis is taken in parallel to a normal line direction to the optical sheet and an X axis is taken in a direction of the row of the cylindrical lens elements, a cross sectional shape of the cylindrical lens elements satisfies Z=X2/(R+√{square root over ( )}(R2−(1+K)X2)) (where R is the radius of curvature of a distal end vertex, and K is a conic constant).
摘要翻译:光学片具有大量连续设置在其一个主面上的柱面透镜元件。 柱面透镜元件具有双曲面或抛物面,并且在照明光的发射侧具有有限的焦距。 其中Z轴与光学片平行于法线方向取向,沿圆柱形透镜元件行的方向取X轴,圆柱形透镜元件的横截面形状满足Z = X
摘要:
An optical information recording medium, which includes both of a land surface and a groove surface as a recording track and presents high signal quality. The optical information recording medium includes both a land and a groove as the recording track on a substrate, in which a laser light is irradiated from a reverse side of the substrate to thereby carry out a recording and a reproduction, and an inclination angle of a groove side is 25° or more and 40° or less, and both of arithmetic average roughness (Ra) on the land surface and the groove surface are assumed to be 0.2 to 0.7 nm.
摘要:
An optical element has a base material having a surface and a plurality of structures which are arranged on the surface of the base material at a fine pitch equal to or shorter than the wavelength of visible light and which each includes a convex or concave portion. The elastic modulus of the material forming the structures is 1 MPa or more and 1200 MPa or less, and the surface on which the structures are formed are hydrophilic.
摘要:
An optical sheet has a large number of cylindrical lens elements provided successively on one of principal faces thereof. The cylindrical lens elements have a hyperboloidal face or a paraboloidal face and have a finite focal distance on the emission side of illumination light. Where a Z axis is taken in parallel to a normal line direction to the optical sheet and an X axis is taken in a direction of the row of the cylindrical lens elements, a cross sectional shape of the cylindrical lens elements satisfies Z=X2/(R+√{square root over ( )}(R2−(1+K)X2)) (where R is the radius of curvature of a distal end vertex, and K is a conic constant).
摘要翻译:光学片具有大量连续设置在其一个主面上的柱面透镜元件。 柱面透镜元件具有双曲面或抛物面,并且在照明光的发射侧具有有限的焦距。 其中Z轴平行于光学片的法线方向取向,并且在圆柱透镜元件的行的方向上取X轴,柱面透镜元件的横截面形状满足Z = X2 /( R +√{平方根超过()}(R2-(1 + K)X2))(其中R是远端顶点的曲率半径,K是圆锥常数)。
摘要:
An optical sheet has a large number of cylindrical lens elements provided successively on one of principal faces thereof. The cylindrical lens elements have a hyperboloidal face or a paraboloidal face and have a finite focal distance on the emission side of illumination light. Where a Z axis is taken in parallel to a normal line direction to the optical sheet and an X axis is taken in a direction of the row of the cylindrical lens elements, a cross sectional shape of the cylindrical lens elements satisfies Z=X2/(R+√{square root over ( )}(R2−(1+K)X2)) (where R is the radius of curvature of a distal end vertex, and K is a conic constant).
摘要翻译:光学片具有大量连续设置在其一个主面上的柱面透镜元件。 柱面透镜元件具有双曲面或抛物面,并且在照明光的发射侧具有有限的焦距。 其中Z轴平行于光学片的法线方向取向,并且在圆柱透镜元件的行的方向上取X轴,柱面透镜元件的横截面形状满足Z = X2 /( R +√{平方根超过()}(R2-(1 + K)X2))(其中R是远端顶点的曲率半径,K是圆锥常数)。
摘要:
In an optical recording medium having formed along recording tracks thereon pits indicative of information signal, a ratio Pw/Tp where Pw is the width of the pit and Tp is the pitch of the tracks is within a range of 0.4 to 0.55. The push-pull method or differential push-pull method is adopted for tracking servo control of the optical recording medium.
摘要:
An eyepiece lens system comprising, in the order from the side of incidence of rays, a first lens unit having positive or negative refractive power as a whole and a second lens unit having positive refractive power as a whole, said eyepiece lens system having little aberrations, image surface flatness excellent to the marginal portions of visual field, a high eye point and a wide visual field.