LIGHT LENS FOR CAR INTERIOR LIGHTING DEVICE

• US 20100110712A1
• Filed: 07/13/2009
• Published: 05/06/2010
• Est. Priority Date: 10/31/2008
• Status: Abandoned Application

• Current Assignee: Kojima Press Industry Company Limited, Polymatech Company Limited
• Original Assignee: Kojima Press Industry Company Limited, Polymatech Company Limited
• Inventors: Honmatsu, Yoshifumi, Nakanishi, Yutaka, Takeda, Yasunori, Ando, Yasuyuki
• Application Number:
  US12/502,070
• Publication Number:
  US 20100110712A1
• Time in Patent Office: Days
• US Class Current: 362/520
• CPC Class Codes: B60Q 3/82 Switches specially adapted for vehicle interior lighting, e.g. switching by tilting the lens
• CPC Class Codes: G02B 5/02 Diffusing elements; Afocal elements
• CPC Class Codes: H03K 17/962 Capacitive touch switches

Abstract

A light lens used for a car interior lighting device for transmitting light from a light source therethrough and illuminating the car interior is provided, and the light lens has a transparent light lens body, electrodes that are colored transparent conductive coating films for detecting the capacitance and located on a light source side of the light lens, and an insulative coating film that has almost the same color and transmission rate as the conductive coating films and is located on the periphery of the conductive coating films. With this configuration, the uniform light transmission rate is achieved over the light lens.

Claims

1. A light lens used for a car interior lighting device for transmitting light from a light source therethrough and illuminating the car interior, the light lens comprising:

a transparent light lens body;

a colored transparent conductive coating film located on a light source side of the light lens body, for detecting capacitance; and

an insulative coating film that has almost the same color and transmission rate as the conductive coating film and is located on a periphery of the conductive coating film.

2. The light lens according to claim 1, wherein

the insulative coating film is located on the periphery of the conductive coating film with a fine gap in between the insulative coating film and the conductive coating film.

3. The light lens according to claim 1, wherein

a transparent sheet on which the conductive coating film and the insulative coating film are formed is located on the light source side surface of the light lens body.

4. The light lens according to claim 1, wherein:

the conductive coating film is divided and located in a plurality of positions on the light source side of the light lens body; and

the insulative coating film is located among said divided conductive coating films.