发明授权
- 专利标题: Illumination device and method, and apparatus for image taking
- 专利标题(中): 照明装置和方法以及摄像装置
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申请号: US12050573申请日: 2008-03-18
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公开(公告)号: US08385735B2公开(公告)日: 2013-02-26
- 发明人: Kouhei Awazu
- 申请人: Kouhei Awazu
- 申请人地址: JP Tokyo
- 专利权人: FUJIFILM Corporation
- 当前专利权人: FUJIFILM Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Sughrue Mion, PLLC
- 优先权: JP2007-070268 20070319
- 主分类号: G03B7/16
- IPC分类号: G03B7/16 ; G03B7/22
摘要:
An illumination device for a camera includes a light source, in which LED chips are supplied with a drive current, for emitting light of a first color at intensity according to the drive current. An encapsulant is disposed in front of each LED chip, for changing an illuminating color of the light. An EEPROM stores a data table for representing a correlation between the illuminating color and the drive current. An illumination control unit obtains first drive current associated with a target color of light for use by referring to the data table, to drive the LED chips with the first drive current. Phosphor in the encapsulant sets color temperature of the light lower upon passage through the encapsulant than upon emission from the LED chips.
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