Vehicle lamp lens
AssigneeTYC Brother Industrial Co., Ltd.
InventorMing-Chih Shih
Life of this patent
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Abstract
A lamp lens is adapted to transmit light, and includes spaced-apart light input and output surfaces and a reflecting surface. The light input surface has a surrounding surface portion and an end surface portion connected to a front end of the surrounding surface portion. The reflecting surface extends from the light input surface to the light output surface, and has a plurality of reflecting segments and optical structures. The reflecting segments are adapted for total reflection of a portion of the light which enters the lamp lens through the light input surface. Each adjacent two of the reflecting segments forma stepped surface structure. The optical structures are adapted to prevent total reflection of a portion of the light.
Claims6
A lamp lens adapted to transmit light that is emitted from a lighting member (9), said lamp lens comprising:
- a light input surface (1) adapted to face the lighting member (9), and having
- a surrounding surface (11) portion that surrounds an optical axis (L) extending in a front-rear direction, and
- an end surface portion (12) that is connected to a front end of said surrounding surface portion (11), and that is disposed on the optical axis (L);
- a light output surface (2) spaced apart from said light input surface (1) along the optical axis (L);
- and
- a reflecting surface (3) extending from said light input surface (1) to said light output surface (2), surrounding the optical axis (L), and having
- a plurality of reflecting segments (311) that are adapted for total reflection of a portion of the light which enters said lamp lens through said light input surface (1), each adjacent two of said reflecting segments (311) forming a stepped surface structure, and
- a plurality of optical structures (34) that are arranged in the front-rear direction and that are adapted to prevent total reflection of a portion of the light, each of said optical structures (34) defining a groove (35) that extends substantially in a left-right direction perpendicular to the front-rear direction, and having
- a main surface (341) adapted for passage of a portion of the light therethrough, and
- a connecting surface (342) connected to said main surface (341) and cooperating with said main surface (341) to define said groove (35), said main and connecting surfaces (341, 342) being alternatively arranged in the front-rear direction.
Dependencies are inferred from the claim text.