公开(公告)号：EP0340437A3

公开(公告)日：1991-03-20

申请号：EP89105033.8

申请日：1989-03-21

Applicant: ABB PROCESS AUTOMATION INC.

Inventor： Burk, Gary Neil

IPC: G01N21/47 ,  G01N21/86 ,  G02F1/13

CPC classification number: G01N21/4738 ,  G01N2021/4773 ,  G01N2021/8663 ,  G01N2201/067 ,  G01N2201/0833 ,  G01N2201/128

Abstract: Apparatus (10) and methods for measuring dark and bright reflectances of translucent sheet material (2) are disclosed. The apparatus (10) comprises first optical means for illuminating one side of the sheet material (2) with a source of electromagnetic radiation. A portion of the radiation is transmitted through the sheet material (2) and another portion of the radiation is reflected by the sheet material. The apparatus (10) also comprises optical gating means (30) that is positioned adjacent the other side of the sheet material (2) in a fixed position relative to the first optical means. The optical gating means (30) absorbs substantially all of the transmitted portion of the radiation when switched to a dark state and reflects substantially all of the transmitted portion of the radiation back through the sheet material (2) when switched to a bright state. The apparatus (10) further comprises second optical means for collecting the reflected portion of the radiation and the portion of the trasmitted portion of the radiation reflected by the optical gating means (30) and retransmitted through the sheet material (2) to provide a total reflectance. The total reflectance has a dark reflectance intensity when the optical gating means (30) is in the dark state and a bright reflectance intensity when the optical gating means is in the bright state. The apparatus also comprises sensing means (60), responsive to radiation collected by the second optical means, for providing a dark signal having a magnitude corresponding to the dark reflectance intensity and a bright signal having a magnitude corresponding the the bright reflectance intensity. The dark and bright signals can be incorporated in known formulae to compute values for quality attributes of the sheet material (2) including opacity and color.

公开(公告)号：EP0350680A3

公开(公告)日：1991-07-31

申请号：EP89111387.0

申请日：1989-07-07

Applicant: ABB PROCESS AUTOMATION INC.

Inventor： Burk, Gary Neil ,  McCanney, Thomas Owen ,  Williams, Paul

IPC: F21M1/00 ,  F21S3/00 ,  F21V8/00 ,  G01N21/89

CPC classification number: G01N21/8901 ,  G01N2021/8627

Abstract: A light source module 100 for use with a multi-camera array 130 in a video surface inspection system includes a first light emitter 104 which extends lengthwise across the entire width of a sheet 106 to be inspected. Light from the first light emitter 104, which preferably comprises one or more fluorescent lamps, is received by a light guide 110 and carried by the guide to uniformly illuminate a band extending entirely across the width of the moving sheet. The light guide comprises a transparent thermoplastic such that the light receiving end 118 of the guide can be bent to define a plurality of sections which can be axially aligned with a corresponding plurality of fluorescent lamps. The light source module can also assist the inspection system in overcoming redundant data processing problems by providing second light emitters 134 which illuminate the sheet in overlapping portions 132 of the fields of view of adjacent cameras of the multi-camera array 130 to define data dividing points. Accordingly, duplicated data generated by the video cameras can be divided among the cameras at the defined data dividing points such that duplicated data is only processed once by the video surface inspection system.

公开(公告)号：EP0350680A2

公开(公告)日：1990-01-17

申请号：EP89111387.0

申请日：1989-07-07

Applicant: ABB PROCESS AUTOMATION INC.

Inventor： Burk, Gary Neil ,  McCanney, Thomas Owen ,  Williams, Paul

IPC: F21M1/00 ,  F21S3/00 ,  F21V8/00 ,  G01N21/89

CPC classification number: G01N21/8901 ,  G01N2021/8627

Abstract: A light source module 100 for use with a multi-camera array 130 in a video surface inspection system includes a first light emitter 104 which extends lengthwise across the entire width of a sheet 106 to be inspected. Light from the first light emitter 104, which preferably comprises one or more fluorescent lamps, is received by a light guide 110 and carried by the guide to uniformly illuminate a band extending entirely across the width of the moving sheet. The light guide comprises a transparent thermoplastic such that the light receiving end 118 of the guide can be bent to define a plurality of sections which can be axially aligned with a corresponding plurality of fluorescent lamps. The light source module can also assist the inspection system in overcoming redundant data processing problems by providing second light emitters 134 which illuminate the sheet in overlapping portions 132 of the fields of view of adjacent cameras of the multi-camera array 130 to define data dividing points. Accordingly, duplicated data generated by the video cameras can be divided among the cameras at the defined data dividing points such that duplicated data is only processed once by the video surface inspection system.

Abstract translation: 与视频表面检查系统中的多摄像机阵列130一起使用的光源模块100包括：第一光发射器104，其沿着待检查的片材106的整个宽度方向延伸。 来自第一光发射器104的光，其优选地包括一个或多个荧光灯，被光导110接收并由引导件携带，以均匀地照射整个穿过移动片的宽度延伸的带。 导光体包括透明的热塑性塑料，使得引导件的光接收端118可被弯曲以限定可以与相应的多个荧光灯轴向对准的多个部分。 光源模块还可以通过提供在多摄像机阵列130的相邻摄像机的视场的重叠部分132中照亮片材的第二发光器134来辅助检查系统克服冗余数据处理问题，以定义数据分割点 。 因此，由摄像机生成的复制数据可以在定义的数据分割点处的摄像机之间进行划分，使得仅由视频表面检查系统处理一次复制的数据。

公开(公告)号：EP0340437A2

公开(公告)日：1989-11-08

申请号：EP89105033.8

申请日：1989-03-21

Applicant: ABB PROCESS AUTOMATION INC.

Inventor： Burk, Gary Neil

IPC: G01N21/47 ,  G01N21/86 ,  G02F1/13

CPC classification number: G01N21/4738 ,  G01N2021/4773 ,  G01N2021/8663 ,  G01N2201/067 ,  G01N2201/0833 ,  G01N2201/128

Abstract: Apparatus (10) and methods for measuring dark and bright reflectances of translucent sheet material (2) are disclosed. The apparatus (10) comprises first optical means for illuminating one side of the sheet material (2) with a source of electromagnetic radiation. A portion of the radiation is transmitted through the sheet material (2) and another portion of the radiation is reflected by the sheet material. The apparatus (10) also comprises optical gating means (30) that is positioned adjacent the other side of the sheet material (2) in a fixed position relative to the first optical means. The optical gating means (30) absorbs substantially all of the transmitted portion of the radiation when switched to a dark state and reflects substantially all of the transmitted portion of the radiation back through the sheet material (2) when switched to a bright state. The apparatus (10) further comprises second optical means for collecting the reflected portion of the radiation and the portion of the trasmitted portion of the radiation reflected by the optical gating means (30) and retransmitted through the sheet material (2) to provide a total reflectance. The total reflectance has a dark reflectance intensity when the optical gating means (30) is in the dark state and a bright reflectance intensity when the optical gating means is in the bright state. The apparatus also comprises sensing means (60), responsive to radiation collected by the second optical means, for providing a dark signal having a magnitude corresponding to the dark reflectance intensity and a bright signal having a magnitude corresponding the the bright reflectance intensity. The dark and bright signals can be incorporated in known formulae to compute values for quality attributes of the sheet material (2) including opacity and color.

Abstract translation: 设备（10）和用于测量透光性片材的黑暗和明亮的反射率的方法（2）是游离缺失盘。 的装置（10）包括第一光学装置，用于使用电磁辐射的源照射所述片材（2）的一侧。 的辐射的一部分是通过所述板材（2）和辐射的另一部分反mitted由片材材料反射。 的装置（10），从而包括光学开关装置（30）没有相对于第一光学装置的固定位置被定位为邻近所述片材（2）的另一侧。 光选通装置（30）基本上吸收所有的反式的在辐射的部分mitted当切换到暗状态，而基本上反射所有的反式的背面通过片材（2）当切换到一个明亮状态mitted在辐射的部分。 的装置（10）还包括第二光学装置，用于收集反射的辐射的和装置（30）部分由所述光学选通反射的辐射的trasmitted部的部分，并通过片材重发（2），以提供完全 反射率。 总反射率有一个黑暗的反射强度在光选通装置（30）是在暗状态和亮的反射强度在光选通装置是在明亮状态。 因此，该设备包括感测装置（60）响应于由所述第二光学装置收集的辐射，用于提供具有大小对应于暗反射强度和具有幅度对应的明亮的反射强度的亮信号的暗信号。 黑暗和明亮的信号可以以已知的公式被并入迎合计算值的片材（2）包括不透明度和颜色的质量属性。