Patent Number: 6,250,777

Title: Double-focus lens and vehicle lamp

Abstract: A double-focus lens is disclosed in which double-focus lens cuts (for example, cuts in which elements of the lens cuts formed on one of the surfaces of the lens include convex cuts in a first direction and concave cuts in the direction substantially perpendicular to the first direction) are formed on at least a portion of the lens. A vehicular lamp device can be constructed using the double-focus lens as an outer lens. Accordingly, a vehicular lamp device with a feeling of three-dimensional depth can be realized by using a lens that forms focal points in two locations, i.e., oil the front side of the lens and on the back side of the lens, without sacrificing light distribution characteristics.

Inventors: Aoyama; Toshihiro (Utsunomiya, JP)

Assignee: Stanley Electric Co., Ltd.

International Classification: F21V 5/04 (20060101); G02B 3/00 (20060101); F21V 5/00 (20060101); F21V 005/00 (); G02B 017/00 ()

Expiration Date: 06/26/2018