Dai Nippon Printing Co., Ltd.

Keiko Sekine

Yuichi Miyazaki

Nobuhiko Ichikawa

Hiroshi Kishimoto

Masaki Katsumata

Yoichi Higuchi

Tadatsugu Onuma

Satoko Maenishi

An infrared ray reflection pattern-printed transparent sheet is provided which can be applied to a data input system of a type of handwriting directly on a screen of a display device and provides a coordinate detect means and which is lightweight, low in a cost, readily increased in an area, possible in mass production and excellent in a read performance. It is an infrared ray reflection pattern-printed transparent sheet in which infrared ray reflective transparent patterns are printed on a surface of a transparent substrate and which is disposed oppositely to a front face of a display device. A cross section obtained by cutting the infrared ray reflective transparent patterns printed on the above transparent substrate in a face orthogonal to the above transparent substrate is formed so that it assumes a multilayer structure comprising a fixed repeating cycle when observed under a scanning electron microscope.

Transparent sheet having a pattern for infrared reflection

An optical element having an alignment layer for an optical anisotropic body, in which the generation of damages in the alignment layer is effectively prevented by providing an optical element having an alignment layer for an optical anisotropic body, wherein a stress releasing layer is formed as an underlying layer for the alignment layer.

Optical element having an alignment layer for an optical anisotropic body

Provided is a reflected pattern-printed transparent sheet in which a high reflection intensity of a non-visible light is obtained and in which a transparency in a visible light region is high. The above transparent sheet is a reflected pattern-printed transparent sheet in which non-visible light reflective transparent patterns are printed on a surface of a transparent substrate and which is mounted oppositely to a front face of a medium capable of displaying images, wherein an ink forming the transparent patterns described above contains a non-visible light reflection material; the non-visible light reflection material is a material having a wavelength selection reflectivity to a wavelength in a non-visible light region; and a thickness of the above transparent patterns is 6 to 20 &#x3bc;m.

Reflection pattern-printed transparent sheet

A non-visible light reflective pattern-printed transparent sheet having a broad read angle is provided. The above transparent sheet is a pattern-printed transparent sheet in which a transparent substrate comprises a base material and a primer layer, and a non-visible light reflective transparent pattern is printed on the surface of the primer layer; an ink constituting the transparent pattern described above contains a material having a wavelength selective reflectivity to a wavelength in an infrared or ultraviolet region; the primer layer described above comprises a primer composition repelling the ink described above; when a cross section obtained by cutting the transparent pattern described above in a face orthogonal to the above transparent substrate is observed under a scanning electron microscope, the transparent pattern described above comprises a multilayer structure comprising a fixed repeating cycle and having a curved part and reflect selectively one of a left circularly polarized light component and a right circularly polarized light component in an incident light.

Pattern printed transparent sheet

The invention provides a hologram plate which is used with the double-focus replication process, and which is integrated with a spacer to impart marring resistance thereto, and is integrated with a light absorbing layer to allow zero-order light and first-order light to have substantially the same intensity. This hologram platecomprises an array of collective element holograms for diffracting parallel light incident thereon at a specific wavelength and a specific incident angle in such a way that the light is converged onto a specific focal length position. The hologram plateis a multilayer structure made up of a first transparent substrate, a hologram layer, an adhesive layerand a second transparent substrate. The second transparent substratedefines a surface in contact with a hologram photosensitive materialduring hologram replication.

Hologram plate and its fabrication process

The invention provides a hologram plate which is used with the double-focus replication process, and which is integrated with a spacer to impart marring resistance thereto, and is integrated with a light absorbing layer to allow zero-order light and first-order light to have substantially the same intensity. This hologram plate comprises an array of collective element holograms for diffracting parallel light incident thereon at a specific wavelength and a specific incident angle in such a way that the light is converged onto a specific focal length position. The hologram plate is a multilayer structure made up of a first transparent substrate a hologram layer an adhesive layer and a second transparent substrate The second transparent substrate defines a surface in contact with a hologram photosensitive material during hologram replication.

Growing community of inventors

Chiba, Japan

Keiko Sekine