公开(公告)号：US20030116694A1

公开(公告)日：2003-06-26

申请号：US10025484

申请日：2001-12-26

Applicant: Xerox Corporation

Inventor： Patrick Y. Maeda

IPC: G01J001/32

CPC classification number: B41J2/45 ,  G06K15/1247

Abstract: A system to monitor light emitting diodes (LEDs) in a printbar is described. The system integrates photodetectors into a printer or into the printbar itself such that as the printbar ages, the photodetectors can detect the decrease in intensity of the LEDs in the printbar and recalibrate driver circuits providing power to each LED. The recalibrated power output of each driver circuit compensates for nonuniformities in the LEDS that result from uneven aging of the LEDs.

Abstract translation: 描述了用于监视打印条中的发光二极管（LED）的系统。 该系统将光电检测器集成到打印机或打印机本身中，使得随着打印条的老化，光电检测器可以检测打印条中LED的强度的降低，并重新校准驱动器电路，为每个LED提供电源。 每个驱动器电路的重新校准的功率输出补偿由LED不均匀老化引起的LEDS的不均匀性。

公开(公告)号：US20040145738A1

公开(公告)日：2004-07-29

申请号：US10672207

申请日：2003-09-26

Applicant: Xerox Corporation

Inventor： Decai Sun ,  Joel A. Kubby ,  Jingkuang Chen ,  Alex T. Tran ,  Patrick Y. Maeda

IPC: G01J003/28

CPC classification number: G01J3/06 ,  G01J3/02 ,  G01J3/0256 ,  G01J3/20

Abstract: A tunable microelectromechanical (MEMS) spectrophotometer with a rotating cylindrical reflective diffraction grating is integrated with a photodetector and an optical fiber light source on a Rowland circle on a monolithic silicon substrate.

Abstract translation: 具有旋转圆柱反射衍射光栅的可调谐微机电（MEMS）分光光度计与单片硅衬底上的Rowland圆上的光电检测器和光纤光源集成。

公开(公告)号：US20020003231A1

公开(公告)日：2002-01-10

申请号：US09924840

申请日：2001-08-08

Applicant: XEROX CORPORATION

Inventor： Decai Sun ,  Eric Peeters ,  Christopher L. Chua ,  Francesco Lemmi ,  Patrick Y. Maeda ,  Scott Solberg

IPC: H01L029/04

CPC classification number: H01L31/1055 ,  B41J2/45 ,  H01L25/0753 ,  H01L31/1016 ,  H01L2924/0002 ,  H01L2924/3011 ,  H01S5/02 ,  H01S5/0262 ,  H01S5/4025 ,  H01L2924/00

Abstract: A light-producing device integrated with a power monitoring system include a light-producing device from which light is emitted in wavelengths that can range from approximately 700 nm to approximately 3 microns. A semi-transparent sensor is located such that at least a portion of the light emitted passes through the semi-transparent sensor and at least a portion of light is absorbed by the semi-transparent sensor. The semi-transparent sensor is configured to be semi-transparent at wavelengths that can range from 700 nm to 3 microns. The semi-transparent sensor may also be used with an external light source, for example with fiber-optic cables.

Abstract translation: 与功率监测系统集成的发光装置包括发光装置，光发射装置可以在约700nm至约3微米的范围内发射波长。 半透明传感器被定位成使得所发射的光的至少一部分通过半透明传感器，并且至少一部分光被半透明传感器吸收。 半透明传感器被配置为在700nm至3微米范围内的波长处是半透明的。 半透明传感器也可以与外部光源一起使用，例如使用光纤电缆。