Nippondenso Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Asahi Glass Company, Limited

Hideki Okuyama

Yasuo Hagisato

Minoru Sumiya

Naohito Kanamori

Masahiro Higuchi

Hiromi Sakurai

Kohichi Murata

Liquid crystal display 1 has a surface disposed in parallel with a surface of holographic concave mirror 2. Liquid crystal display 1 causes a revolution about a display center 'd' of holographic concave mirror 2 in a back-and-forth direction as indicated by arrow .alpha.. In response to such revolution around holographic concave mirror 2, liquid crystal display 1 causes an autorotation about its vertical center 'e' in the back-and-forth direction as indicated by arrow .beta..

Head-up display apparatus

All components and parts of a head-up displaying device are formed in a unit and secured to a dashboard or a rear panel of a vehicle. The displaying device has a case composed of a base member, a bottom plate and a cover. The base member is secured to the dashboard or the rear panel and forms a turntable with the bottom plate. An image projection unit, a control unit and a reflecting member are housed in the case, and a foldable flat combiner is pivotally secured to the cover of the case. A shade member is formed on the cover to prevent the image projection unit from coming into the driver's line of sight. The combiner is held by a holder which forms a hinge using clips secured to the case and shafts formed on the sides of the holder so that the inclination angle of the combiner may be adjusted. The combiner encloses a reflection hologram and an aspherical concave lens formed on the reflection hologram with glass panes or transparent plates made of resinous material which are covered with anti-reflection coatings.

Head-up displaying device for a vehicle

A liquid crystal displaying device uses an inexpensive incandescent lamp or xenon lamp without sacrificing luminous intensity of a reflector, while maintaining an ease of installation. In the displaying device, a liquid crystal displaying panel, an incandescent lamp, a reflector, a lens and a heat-ray absorbing filter have a common optical axis and are secured to a bracket. The lamp is held by a socket and installed on the bracket transversely to the optical axis of the reflecting surface of the reflector. Further, the liquid crystal displaying panel has polarizing plates on both sides thereof. A coating to diffuse light from the lamp is disposed on one of the polarizing plates on the light incident side of the displaying panel. The polarizing direction of the polarizing plate on the other side of the displaying panel is selected so that the polarizing direction of the incident light waves on a reflective layer which is disposed on the front windshield glass provides a transversal or horizontal wave.

LCD, light source, and hemispheric concave reflector mounted

Growing community of inventors

Obu, Japan

Hideki Okuyama