Nitto-denko Corporation

Yoshiaki Asanoi

Shoichi Matsuda

Katsunori Takada

Takehito Fuchida

Tadayuki Kameyama

Hiroyuki Takemoto

Yoshihiro Kitamura

Toru Umemoto

Isao Hirose

Kanji Nishida

Kazumasa Okada

Hiroshi Tomohisa

The head-up display apparatus includes: a display unit configured to output projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a polarizing plate with a retardation layer, which is arranged on a housing inner side of the cover member, and includes a retardation layer and a polarizer in the stated order from a cover member side. The retardation layer has an in-plane retardation Re(550) of 3,000 nm or more. The head-up display apparatus is configured so that an angle of reflection of the projection light output from the housing through the opening portion with respect to a windshield is 30° or less, or is 40° or more.

Head-up display apparatus

A head-up display apparatus that is excellent in viewability. A head-up display apparatus according to an embodiment of the present invention includes: a display unit configured to emit projection light, the display unit including a display cell, and a first polarizing plate with a retardation layer, which is arranged on an emission side of the display cell, and which includes a polarizer and a first retardation layer in the stated order from a display cell side; at least one reflector configured to reflect the projection light; and a second polarizing plate with a retardation layer, which is arranged on a reflection surface of the reflector, and which includes a polarizer and a second retardation layer in the stated order from a reflector side. The first retardation layer and the second retardation layer each have an in-plane retardation Re(550) of from 100 nm to 200 nm.

Head-up display device

Provided is a head-up display apparatus that is excellent in viewability when a display screen is viewed through a pair of polarized sunglasses, and is excellent in heat resistance. The head-up display apparatus includes: a display unit configured to output projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a polarizing plate arranged on a housing inner side of the cover member. The cover member has an in-plane retardation Re(550) of 3,000 nm or more. The head-up display apparatus is configured so that an angle of reflection of the projection light output from the housing through the opening portion with respect to a windshield is 30&#xb0; or less, or is 40&#xb0; or more.

A head-up display apparatus includes: a display unit, which includes a display cell and a first polarizing plate with a retardation layer arranged on an output side of the display cell, the first polarizing plate with a retardation layer including a polarizer and a first retardation layer in the stated order from the display cell side, and which is configured to output projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and which is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a second polarizing plate with a retardation layer, which is arranged on a housing inner side of the cover member, and which includes a polarizer and a second retardation layer in the stated order from the cover member side.

A head-up display apparatus includes: a display unit configured to output projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a polarizing plate with a retardation layer, which is arranged on a housing inner side of the cover member, and includes a retardation layer and a polarizer in the stated order from a cover member side. The retardation layer has an in-plane retardation Re(550) of from 100 nm to 200 nm. The head-up display apparatus is configured so that an angle of reflection of the projection light output from the housing through the opening portion with respect to a windshield is 30&#xb0; or less, or is 40&#xb0; or more.

It is an object of the invention to provide an optical laminate-producing method in which a polarizing film having the desired optical properties can be conveniently formed on a resin film as a substrate without performing any surface alignment treatment such as rubbing on the resin film. The invention relates to a method for producing an optical laminate comprising a stretched resin film and a polarizing film, the method comprising the steps of: preparing a stretched resin film; applying a solution of a liquid crystal compound in an isotropic phase state to the stretched resin film; and forming a polarizing film in which the liquid crystal compound is aligned by solidifying the applied liquid crystal compound solution, wherein a slow axis of the stretched resin film is substantially parallel to an absorption axis of the polarizing film, and the stretched resin film undergoes no surface alignment treatment.

Method for producing an optical laminate comprising a stretched resin film and a polarizing film using a diluted lyotropic liquid crystal compound solution

A light control device of the present invention includes a first patterning polarizing platecontaining a plurality of polarization regions having different absorption axis directions, a second patterning polarizing platecontaining the same polarization regions as those of the first patterning polarizing plate, and a retardation plate, wherein at least any one of the first and the second patterning polarizing platesis disposed slidably in a plane direction. Such a light control device hardly causes color irregularities and hardly causes a pattern.

Light control device, light control window, and optical laminated body for light control device

The present invention is to provide a polarizing plate including an alignment layer applicable to various types of substrates, and having excellent light polarization properties. A polarizing plateof the present invention includes an alignment layer, and a polarizing layerdisposed on the alignment layer, and containing an organic dye having lyotropic liquid crystallinity, wherein the organic dye in the polarizing, layeris in a form of supramolecular aggregates, and the alignment layercontains a cycloolefin based resin.

Polarizing plate and method for producing polarizing plate

The present invention provides a projection apparatus capable of clearly displaying a projected image, and allowing the sight behind the projected image to be viewed to a sufficient degree. A projection apparatus () of the present invention includes a light irradiation device () configured to emit an output light () having one polarized light component, and a polarizing plate () including a polarizer () irradiated with the output light (), wherein in the polarizing plate (), an absorption axis is arranged to absorb and reflect the output light () by the polarizing plate, reflectance of the polarizing plate () for the output light () is 10% or more, and single transmittance of the polarizing plate () is in the range of 30% to 90%.

Projection apparatus having polarizing plate which absorbes and reflects output light, and vehicle

It is an object of the invention to provide a method for manufacturing a long laminated polarizing plate having a long polarizing coating formed by coating directly on a long retardation film and to provide such a long laminated polarizing plate. The present invention relates to a method for manufacturing a long laminated polarizing plate comprising a long retardation film having a slow axis in its longitudinal direction and a long polarizing coating placed on the retardation film and having an absorption axis or a transmission axis in an in-plane direction at an angle of 25 to 65&#xb0; to the slow axis direction of the long retardation film.

Method for manufacturing long laminated polarizing plate and long laminated polarizing plate

A method for producing an optical laminate including a film substrate and a polarizing layer which comprises the steps of: (A) laminating a re-releasable film on one main surface of the film substrate to obtain a laminate film substrate; B) performing a rubbing treatment on the other main surface of the film substrate of the laminate film substrate; C) coating the rubbing-treated surface of the film substrate with a solution containing a lyotropic liquid crystal compound and a solvent; and D) detaching the re-releasable film from the laminate film substrate.

Method for producing optical laminate

The present invention provides an optical laminated body having a patterning polarizer layer in which a more complicated pattern can be set. The optical laminated bodyA of the present invention has a patterning polarizer layerA having at least two polarizing regionsA andA having different single transmittances, and a substrateA. The two polarizing regionsA andA are different in thickness.

Growing community of inventors

Ibaraki, Japan

Yoshiaki Asanoi