Title:
2個のカメラと単一光源を使用する透明容器の光学検査装置及びその方法
Document Type and Number:
Japanese Patent JP4036569
Kind Code:
B2
Abstract:
Apparatus for inspecting a container (14) for variations that affect commercial acceptability of the container that includes a light source (16) for directing diffuse polarized light energy through a container while the container is rotated about its axis. A first camera (24) is disposed to receive diffuse polarized light energy transmitted from the light source through a portion of the container, so that the first camera receives an image of the container portion in which opaque variations appear dark against an otherwise bright background. A second camera (28) receives light energy transmitted from the light source through substantially the same portion of the container, and includes a polarizer (32) at cross-orientation to the polarizer at the light source. The second camera receives a bright image of stress variations in the container, which alter polarization of the diffuse polarized light energy passing through the container, against an otherwise dark background. An image processor (41) is coupled to both of the cameras to scan associated images of the container portion viewed by the cameras for detecting and distinguishing between and among variations in the container as a function of a pixel by pixel comparison between the two images.
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Inventors:
Timothy Jay Nicks
James Aylin Green
James Aylin Green
Application Number:
JP17148699A
Publication Date:
January 23, 2008
Filing Date:
May 14, 1999
Export Citation:
Assignee:
Owens Brockway Glass Container Incorporated
International Classes:
G01N21/90; G01N21/21
Domestic Patent References:
| JP1141342A | ||||
| JP4216445A | ||||
| JP6294760A | ||||
| JP8136476A | ||||
| JP6438640A |
Attorney, Agent or Firm:
Minoru Nakamura
Fumiaki Otsuka
Shishido Kaichi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Fumiaki Otsuka
Shishido Kaichi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo