| 发明名称 | Fundus camera | ||
| 摘要 | A fundus camera according to the present invention includes a light metering unit configured to change a light metering area within an image captured by an imaging unit based on one of a position and a size of a light blocking member, and a controlling unit configured to control an amount of light emission from a light source based on a light metering value corresponding to the light metering area. | ||
| 申请公布号 | US9226659(B2) | 申请公布日期 | 2016.01.05 |
| 申请号 | US201113210975 | 申请日期 | 2011.08.16 |
| 申请人 | Canon Kabushiki Kaisha | 发明人 | Iwanaga Tomoyuki |
| 分类号 | A61B3/12;A61B3/14 | 主分类号 | A61B3/12 |
| 代理机构 | Canon U.S.A., Inc., IP Division | 代理人 | Canon U.S.A., Inc., IP Division |
| 主权项 | 1. An ophthalmic apparatus, comprising: an illumination optical system configured to guide light from a light source to a fundus; a light blocking member configured to block at least a portion of the light emitted from the light source toward the fundus; an imaging unit configured to capture an image using light returned from the fundus through a photographic optical system; a light metering unit configured to change a light metering area within the image captured by the imaging unit based on at least one of a position and a size of the light blocking member; and a controlling unit configured to control an amount of light toward the fundus through the light blocking member based on a light metering value corresponding to the light metering area changed by the light metering unit. | ||
| 地址 | Tokyo JP | ||