| 发明名称 | Illumination apparatus and image sensor unit including diffusing patterns with differing intervals | ||
| 摘要 | An illumination apparatus includes a light source and a light guide formed in a rod shape. An end surface in a longitudinal direction is an incident surface that receives light emitted from the light source. Diffusing patterns are formed on the light guide, and intervals between the diffusing patterns closer to the incident surface in a first area close to the incident surface are smaller than intervals between the diffusing patterns closer to the incident surface in a second area farther from the incident surface than the first area. | ||
| 申请公布号 | US9638855(B2) | 申请公布日期 | 2017.05.02 |
| 申请号 | US201414462758 | 申请日期 | 2014.08.19 |
| 申请人 | CANON COMPONENTS, INC. | 发明人 | Yoshida Hidemasa;Tsumekawa Yoshihiko |
| 分类号 | H04N1/028;F21V8/00 | 主分类号 | H04N1/028 |
| 代理机构 | Rossi, Kimms & McDowell LLP | 代理人 | Rossi, Kimms & McDowell LLP |
| 主权项 | 1. An illumination apparatus comprising: a light source; and a light guide formed in a rod shape, wherein a first end surface in a longitudinal direction is a first incident surface that receives light emitted from the light source, wherein a plurality of patterns for diffusing light are formed on a first area of the light guide and a second area of the light guide, the first area closer to the first incident surface than the second area, wherein intervals between at least some of the patterns formed in a first region of the first area closest to the first incident surface are smaller than intervals between at least some of the patterns formed in a first region of the second area closest to the first incident surface, and wherein a dimension of the patterns formed in the first area is smaller than a dimension of the patterns formed in the second area. | ||
| 地址 | Saitama JP | ||