Display system for projecting information to a driver of a car

Assignee: Central Glass Co Ltd

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Filing: 1997-10-09

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Granted: —

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Expires: 2017-10-09

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Abstract

Abstract A head-up display system of an automotive vehicle, comprising outboard-side and inboard-side glass plates constituting a front windshield glass. The inboard-side glass defines thereinside a passenger compartment in which a driver resides. An intermediate film is disposed between the outboard-side and inboard-side glass plates to bond the glass plates. An optically functioning film arrangement is disposed between the outboard-side and inboard-side glass plates. The optically functioning film arrangement includes first and second polarization-direction changing layers, and a light-transmittable reflection layer disposed between the first and second polarization-direction changing layers. The three layers are laminated to form a single body of the optically functioning film arrangement which is bonded to the outboard-side glass plate and separate from the inboard-side glass plate so that a layer of the intermediate film lies between the optically functioning film arrangement and the inboard-side glass plate. A displaying device is provided to generate a display light of driving information. A light-polarizing device is provided to polarize the display light into P-wave. The display light having the P-wave is to be incident around Brewster's angle on the inboard-side glass plate and reaches the light-transmittable reflection layer to be reflected toward the driver so as to form a display of the driving information.

Inventors

👤 Motoh c/o Central Glass Company Ltd. Asakura
👤 Kazuya c/o Central Glass Company Ltd. Kobayashi
👤 Shinji c/o Central Glass Company Ltd. Nishikawa
👤 Isao c/o Central Glass Company Ltd. Nakamura

Bibliographic Details

Application Number —

Jurisdiction EP

Data Source google_patents

Last Synchronized 2026-10-25 11:32

CPC Classifications

G; G02; G02B; G02B27/00; G02B27/01; G02B27/0101; G02B2027/0118; G02B2027/012; G02B2027/0192; G02B2027/0194; G02B5/00; G02B5/30

Claims Analysis

Total Claims: 5

Claim 1

Independent Claim 102 words

A display system comprising: at least one transparent plate; an optically functioning film arrangement bonded to said transparent plate and including first and second polarization-direction changing layers, and a light-transmittable reflection plate disposed between said first and second polarization-direction changing layers; a displaying device for generating a display light of information; and a light polarizing device for polarizing the display light into P-wave, the display light having the P-wave being incident around Brewster's angle with respect to said transparent plate member and reaching said light-transmittable reflection layer to be reflected toward the person so as to form a display of the information.

Claim 2

Dependent Claim 118 words

A display system as claimed in Claim 1, wherein said at least one transparent plate includes first and second transparent plates, said first transparent plate being located outside relative to said second transparent plate defining a space in which a person resides, wherein said display system further comprises an intermediate film disposed between said first and second transparent plates to bond said first and second transparent plates, and wherein said optically functioning film arrangement is arranged such at least said first polarization-direction changing layer is bonded to said first transparent plate and separate from said second transparent plate so that a layer of said intermediate film lies between said first polarization-direction changing layer and said second transparent plate.

Claim 3

Dependent Claim 77 words

A display system as claimed in Claim 2, wherein said first polarization-direction changing layer, said light-transmittable reflection layer and said second polarization-direction changing layer are laminated to form said optically functioning film arrangement in a laminated state, said optically functioning film arrangement being bonded to said first transparent plate and separate from said second transparent plate so that the layer of said intermediate film lies between said optically functioning film arrangement and said second transparent plate member.

Claim 4

Dependent Claim 67 words

A display system as claimed in Claim 2, wherein said first polarization-direction changing layer and second polarization-direction changing layer are bonded respectively to said first and second glass plates, said light-transmittable reflection layer being formed on one of said first and second polarization-direction changing layers, the layer of said intermediate film lying between one of said first and second polarization-direction changing layers and said light-transmittable reflection layer.

Claim 5

Dependent Claim 47 words

A display system as claimed in Claim 2, wherein said first and second transparent plates are respectively outboard-side and inboard-side glass plates constituting a laminated glass as a front windshield glass of an automotive vehicle, said inboard-side glass defining a passenger compartment in which a driver resides.

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