Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
APPARATUS FOR INSPECTING DEGREE OF POSITIVE PRESSURE OF SEALED CONTAINER
Document Type and Number:
Japanese Patent JPH09145516
Kind Code:
A
Abstract:

To more correctly judge whether or not a sealed container is good which is turned to a positive pressure thereinside depending on an intensity of light reflected from a lid face thereof and incident on a photodetector.

The apparatus turns light from a light source 2 into nearly parallel light beams, illuminates an area including a top face of a lid 12 of a sealed container 11, projected a reflected light from the top face of the lid 12 of the container 11 to a photodetector 7 via a beam splitter 5 and a condenser lens 6, thereby judge whether or not the sealed container is good from an intensity of the projected light. When the light reflected at the top face of the lid 12 of the sealed container 11 is nearly parallel, the apparatus guides the light to be focused between the condenser lens 6 and the photodetector 7 through the condenser lens 6. A mask 15 is provided in the vicinity of a focal point to shut a central part of the light entering the photodetector 7.


Inventors:
FUJITA TOSHIKI
MATSUMOTO HITOSHI
Application Number:
JP31074995A
Publication Date:
June 06, 1997
Filing Date:
November 29, 1995
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TOYO GLASS MACHINERY
International Classes:
G01L11/00; G01B11/24; G01N21/90; (IPC1-7): G01L11/00; G01B11/24
Attorney, Agent or Firm:
Kazuo Sato (3 others)