发明授权
US07775436B2 Method of driving a plurality of visible and invisible LEDs so as to produce an illumination beam having a dynamically managed ratio of visible to invisible (IR) spectral energy/power during object illumination and imaging operations
失效
驱动多个可见和不可见的LED以便在物体照明和成像操作期间产生具有动态管理的可见到不可见（IR）光谱能量/功率的比例的照明光束的方法
- 专利标题： Method of driving a plurality of visible and invisible LEDs so as to produce an illumination beam having a dynamically managed ratio of visible to invisible (IR) spectral energy/power during object illumination and imaging operations
- 专利标题（中）： 驱动多个可见和不可见的LED以便在物体照明和成像操作期间产生具有动态管理的可见到不可见（IR）光谱能量/功率的比例的照明光束的方法
-
申请号： US11978951申请日： 2007-10-30
-
公开(公告)号： US07775436B2公开(公告)日： 2010-08-17
- 发明人: C. Harry Knowles , Xiaoxun Zhu , Timothy Good , Tao Xian , Anatoly Kotlarsky , Michael Veksland , Mark Hernandez , John Gardner , Steven Essinger , Patrick Giordano , Sean Kearney , Mark Schmidt , John A. Furlong , Nicholas Ciarlante , Yong Liu , Jie Ren , Xi Tao , JiBin Liu , Ming Zhuo , Duane Ellis
- 申请人： C. Harry Knowles , Xiaoxun Zhu , Timothy Good , Tao Xian , Anatoly Kotlarsky , Michael Veksland , Mark Hernandez , John Gardner , Steven Essinger , Patrick Giordano , Sean Kearney , Mark Schmidt , John A. Furlong , Nicholas Ciarlante , Yong Liu , Jie Ren , Xi Tao , JiBin Liu , Ming Zhuo , Duane Ellis
- 申请人地址： US NJ Blackwood
- 专利权人： Metrologic Instruments, Inc.
- 当前专利权人： Metrologic Instruments, Inc.
- 当前专利权人地址： US NJ Blackwood
- 代理商 Thomas J. Perkowski, Esq. P.C.
- 主分类号： G06K7/10
- IPC分类号： G06K7/10
摘要：
A method of driving a plurality of visible and invisible laser diodes so as to produce an illumination beam having a dynamically managed ratio of visible to invisible (IR) spectral energy/power during object illumination and imaging operations. The method involves supplying a plurality of visible laser and invisible laser diodes with a predetermined/default values of diode drive currents so as to illuminate the object with a spectral mixture of illumination during object illumination and imaging operations. One or more digital images of the illuminated object are captured and the image contrast quality thereof is measured, in real-time, so as to generate feedback or control data. This feedback or control data is used to dynamically generate the necessary values for the adjusted diode drive currents that are used to drive the visible and invisible laser diodes and produce an illumination beam having a dynamically managed ratio of visible to invisible (IR) spectral energy/power required to produce images of sufficient image contrast to ensure satisfactory image processing, while minimizing visual brightness to humans, at a POS station during object illumination and imaging operations.