Koito Manufacturing Company, Ltd.

Shinji Aikawa

Koichi Nakamura

Hidetaka Anma

Michihiro Mabe

Mariko Warashina

A method of surface treatment for a lens of a vehicle lamp. The method comprises forming a hard coating film on a outer surface of the lens by heating to harden after the hard coating film is applied onto the outer surface of the lens; cooling the lens formed with the hard coating film until the inner surface of the lens has a predetermined temperature; and forming a antifogging coating film on a inner surface of the lens by heating to dry after the antifogging coating film is applied onto the inner surface of the lens.

Method of surface treatment for lens of vehicle lamp

A vehicle lamp having a front lens with marks formed by irradiating a laser beam on a surface of the lens is disclosed. The laser beam forms the shapes of a mark, and the mark includes recess grooves. Thus, even in cases where the mark is different in displayed content according to the destination of the lamp, for example, and a lamp certification mark must be formed at the same position of the front lens, the mark can be readily formed by suitably performing irradiation control of the laser beam. The method prevents formation of an outline due to a removable mold insert that appears on the inner surface of the front lens and marks formed in a conventional manner in which the removable insert is used to accommodate the changes of the mark displayed content.

Vehicle lamp and its marking method

A vehicle lamp comprising a lens that includes an inner surface on which an antifogging coating film is formed and an outer surface on which a hard coating film is formed. It is preferable that the vehicle lamp further comprise a lamp body, wherein the lens further includes a lens front portion, a peripheral wall portion formed at the outer peripheral edge of the lens front portion, and a seal leg portion formed at the leading end of the peripheral wall portion and fixed to the lamp body, and wherein the antifogging coating film and the hard coating film are formed on at least the lens front portion excluding the seal the leg portion of the lens.

Vehicle lamp lens with surface treatments

A vehicle lamp includes: a lamp chamber defined by a lamp body and a colorless transparent front lens; a light source disposed in the lamp chamber; and a printed sheet disposed inwardly of the front lens. The printed sheet includes a colorless transparent sheet main body of synthetic resin having a pattern consisting of a predetermined colored transparent layer printed on an internal surface of the front lens. The colored transparent layer and a convex three-dimensional colorless transparent layer are formed in a laminated fashion as a lower layer and an upper layer, respectively, on an external surface of the sheet main body. A plating-like printed layer and a light shielding layer are formed in a laminated fashion as a lower layer and an upper layer, respectively, on an internal surface of the sheet main body at a location matching the location of the convex three-dimensional colorless transparent layer.

Vehicle lamp

A surface-coated, molded resin article for vehicles composed of a substrate (,) made of a resin, a plate layer (,) formed on the surface of the substrate (,) and coating films formed on the surface of the plate layer (,) wherein two or more different silicone-based coating films (,), (,) containing UV absorbers are laminated on each other. The lower coating film (,) is a light-reflective pearl film, while the upper coating film (,) is a film having a desired color. The UV rays are absorbed by the UV absorber contained in each coating film, to reduce the amount of UV rays that reach the interface between the plate layer,and the coating film,thus, peeling of the coating films can be effectively prevented. The lower coating film,reflects the external rays and provides a glossy appearance, thus contributing to the improvement in the appearance as a metallic coating.

Surface-coated, molded resin articles for vehicle lighting equipment

A lamp for use in adverse conditions such as in a headlamp for a vehicle includes a coating for preventing mist, condensation or other haze from forming on a front lens and/or for preventing discoloration of the front lens caused by UV light emitted from a light source. The lamp has a discharge-lamp bulb serving as the light source, the discharge-lamp bulb being disposed in the lamp chamber. The lamp chamber can be defined by the lamp body and the front lens. The coating can comprise an anti-haze/UV film that is prepared by mixing a UV absorbing material with an anti-haze material.

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Shizuoka, Japan

Shinji Aikawa