Abstract:
An optical member that will be incorporated in a surface light source unit and that is scarcely deformed while it is used as a component of the surface light source unit. The optical member comprises optical sheets layered on each other. The optical sheets at least includes: an outermost optical sheet on the light-entrance side, which is situated outermost on the light-entrance side; and a high-rigidity optical sheet situated on the light-exit side of the outermost optical sheet on the light-entrance side, a rigidity of the high-rigidity optical sheet being higher than a rigidity of the outermost optical sheet on the light-entrance side.
Abstract:
In a diffusion sheet 101, a plurality of approximately trapezoidal columnar unit lens portions 11 are disposed such that the long-axis directions thereof are in parallel with each other, and all the surfaces of the unit lens portions, which correspond to the long bottom segments 112 of the approximately trapezoidal sections of the unit lens portions 11 are disposed on a light-incident-side flat surface. Further, light absorbing portions 12 are disposed in the grooves between adjacent unit lens portions 11 to absorb and/or shield external light incident from a light outgoing side. In the diffusion sheet 101 arranged as described above, light incident on the unit lens portions 11 from a light incident side is totally reflected on the surfaces corresponding to the side segments 111 of the approximately trapezoidal sections vertical to the long-axis direction of the unit lens portions and outgoes from the light outgoing side. In each of the unit lens portions 11 arranged as described above, the distance h between both the bottom segments 112 and 113 of the approximately trapezoidal section is 120% or more to 400% or less of the length p of the long bottom segment 112 (h/p=1.20 to 4.00).
Abstract translation:在漫射片101中,多个大致梯形的柱状单位透镜部11配置成使得其长轴方向相互平行,并且单位透镜部的与长底部片段对应的全部表面 单元透镜部11的近似梯形部的112个配置在光入射侧的平坦面上。 此外,光吸收部12设置在相邻的单位透镜部11之间的槽中,以吸收和/或屏蔽从光出射侧入射的外部光。 在如上所述配置的扩散片101中,从光入射侧入射到单位透镜部11的光在与单元的长轴方向垂直的大致梯形截面的侧片111相对应的面上被全反射 透镜部分和光出射侧的出射。 在如上所述布置的每个单位透镜部分11中,大致梯形部分的两个底部段112和113之间的距离h是长底部段112的长度p的120%或更多到400% h / p = 1.20〜4.00)。
Abstract:
The present invention provides a surface light source device and a transmission display device, which can exhibit smoother output light properties and higher front luminance, and avoid occurrence of moiré. A surface light source device 10A includes a light source portion 13A, a light controlling sheet 15 located on the output light side of the light source portion 13A, and a light diffusing sheet 16 located on the output light side of the light controlling sheet 15 and including micro-convex structures. The light diffusing sheet 16 includes a transparent base film 16a, and a light diffusing layer 16d coated on a surface of the transparent base film 16a. Micro-beads 16b incorporated in the light diffusion sheet 16 can exhibit a lens effect and provide a light condensing effect and a light diffusing effect. As such, the output light properties of the surface light source device 10A can be changed smoother, thereby providing higher front luminance and avoiding occurrence of moiré.
Abstract:
A view angle control sheet which can suppress a decrease in screen brightness is provided. Lens portions having trapezoidal shapes in cross section are arranged at predetermined intervals, and a wedge-shaped portion between the lens portions adjacent to each other is filled with the same material as the lens portion or with a material different from the lens portion. In the wedge-shaped portion, a bottom surface is provided on a screen image side while a leading edge is provided on an observer side, and at least a slope portion of the wedge-shaped portion is made of a material having a refractive index lower than that of a lens portion material.
Abstract:
A converging sheet includes a light-emerging-side lens member formed of a plurality of unit lenses of convex shape that are arranged on a light-emerging side, and a scattering layer that is formed along a surface of each unit lens and scatters light. The scattering layer includes light diffusing particles. A thickness t of the scattering layer is equal to or more than one-tenth the lens pitch p. The converging sheet satisfies the following relationships: d×((t+h+p)/Φ)>50% and d×(t/Φ)
Abstract:
The present invention provides an oil-in-water emulsified food product containing plant sterol, which has the effect of reducing the level of cholesterol in the blood, and having a smooth texture and excellent emulsification stability. Means for Solving the Problems: An oil-in-water emulsified food product containing a complex of plant sterol with egg yolk lipoprotein is provided. This oil-in-water emulsified food product can be obtained by a production method having a step wherein a liquid dispersion of a complex is prepared by adding a water-based medium as needed to egg yolk lipoprotein and plant sterol followed by stirring and mixing; a step wherein water-phase ingredient(s) are added as needed, stirred and mixed; and a step wherein oil-phase ingredient(s) are added and an emulsification treatment is performed.
Abstract:
A projection screen 111 comprises a total reflection prism lens 114 and a lenticular lens 115 provided on the viewer's side of the total reflection prism lens 114. The total reflection prism lens 114 has a plurality of unit prisms 113 on its back surface (the outermost plane of incidence) on which imaging light L is incident. Each unit prism 113 has an apical angle λ that corresponds to the angle between the plane of incidence 113a and the plane of total reflection 113b, and the apical angles λ of the unit prisms 113 vary with the position of each unit prism 113 on the screen plane. In particular, the unit prisms 113 have apical angles λ varying continuously from 30° to 45° so that the apical angles λ on the side distant from the center O of the concentric circles are greater than the apical angles λ on the side close to this center O.
Abstract:
A diffusing sheet, a surface light source unit, and a transmission type display that can attain uniform illumination so that the brightness of light on the display screen appears uniform regardless of the position from which the display screen is observed. The diffusing sheet includes, on its light-emerging side surface, a diffusion lens array having a plurality of unit lenses, each unit lens being in a shape equivalent to a part of an elliptic cylinder having an elliptical cross section. The surface light source unit includes the diffusing sheet and a convergent sheet 12 that has a plurality of unit lenses 121 having almost trapezoidal cross sections, formed on one surface thereof. It is possible to attain uniform illumination by diffusing light from cathode ray tubes in the surface light source unit, and, at the same time, to converge the light serving as backlight to enhance optical efficiency.
Abstract:
A Fresnel lens sheet holding structure holds a thin Fresnel lens sheet formed on a forming mold easily releasable from the forming mold in a satisfactory planarity on a rear projection display. A rear projection display is provided with the Fresnel lens sheet holding structure. The Fresnel lens sheet holding structure holds a Fresnel lens sheet of 3 mm or below in thickness having an entrance surface provided with prisms of a triangular cross section each having an entrance facet and a total-reflection facet that reflects part or all of light fallen on the entrance facet in a total-reflection mode to deflect the light in a desired direction. The Fresnel lens sheet holding structure includes a hanging member to be attached to the upper side of the Fresnel lens sheet, and a support member for supporting the hanging member. Preferably, a tensioning member is attached to the Fresnel lens sheet.
Abstract:
In a diffusion sheet 101, a plurality of approximately trapezoidal columnar unit lens portions 11 are disposed such that the long-axis directions thereof are in parallel with each other, and all the surfaces of the unit lens portions, which correspond to the long bottom segments 112 of the approximately trapezoidal sections of the unit lens portions 11 are disposed on a light-incident-side flat surface. Further, light absorbing portions 12 are disposed in the grooves between adjacent unit lens portions 11 to absorb and/or shield external light incident from a light outgoing side. In the diffusion sheet 101 arranged as described above, light incident on the unit lens portions 11 from a light incident side is totally reflected on the surfaces corresponding to the side segments 111 of the approximately trapezoidal sections vertical to the long-axis direction of the unit lens portions and outgoes from the light outgoing side. In each of the unit lens portions 11 arranged as described above, the distance h between both the bottom segments 112 and 113 of the approximately trapezoidal section is 120% or more to 400% or less of the length p of the long bottom segment 112 (h/p=1.20 to 4.00).
Abstract translation:在漫射片101中,多个大致梯形的柱状单位透镜部11配置成使得其长轴方向相互平行,并且单位透镜部的与长底部片段对应的全部表面 单元透镜部11的近似梯形部的112个配置在光入射侧的平坦面上。 此外,光吸收部12设置在相邻的单位透镜部11之间的槽中,以吸收和/或屏蔽从光出射侧入射的外部光。 在如上所述配置的扩散片101中,从光入射侧入射到单位透镜部11的光在与单元的长轴方向垂直的大致梯形截面的侧片111相对应的面上被全反射 透镜部分和光出射侧的出射。 在如上所述布置的每个单位透镜部分11中,大致梯形部分的两个底部段112和113之间的距离h是长底部段112的长度p的120%或更多到400% h / p = 1.20〜4.00)。