Workpiece, and container and contents, inspecting apparatus and method

• US 4,063,823 A
• Filed: 12/14/1976
• Issued: 12/20/1977
• Est. Priority Date: 12/14/1976
• Status: Expired due to Term

• Current Assignee: Rame-Hart, Inc.
• Original Assignee: Rame-Hart, Inc.
• Inventors: Grat, Felix R.
• Primary Examiner(s): Corbin, John K.
• Assistant Examiner(s): Rosenberger, R. A.
• Application Number:
  US05/750,460
• Time in Patent Office: 371 Days
• Field of Search: 356/197, 356/240, 250/223 B
• US Class Current: 356/427
• CPC Class Codes: G01N 2033/0081 containers; packages; bottles
• CPC Class Codes: G01N 21/9027 in containers after filling
• CPC Class Codes: G01N 21/951 Balls

Abstract

The method comprises directing light, in the visible light spectrum, of from approximately 4900 to 5800 Angstrom units onto workpieces, or onto containers having translucent bodies in order to illuminate the workpieces, or both the containers and fluent material contents of the containers, the method having a particular utility in inspecting workpieces in assembly or quality control operations, and in inspecting vials, ampoules, and the like, to evaluate and/or detect structural fissures, disconnections, fractures, etc. in such workpieces, and growths (i.e., egg embryos), foreign matter, and the like, in the fluent material contents of the containers, as well as the condition of the containers themselves. The apparatus comprises means suitable for practicing the novel method, and includes a support for the workpiece or fluent-material-confining container, a television system for viewing and displaying the illuminated workpiece or container and contents, and a light source which provides radiation substantially in a range of from 4900 to 5800 Angstrom units, for effecting the desired illumination of the container and contents, or workpiece, at not more than approximately 0.05 foot-candle.

Claims

1. An improved apparatus for inspecting translucent-body containers, and fluent materials contained within such containers, having means for disposing a translucent-body container having fluent material therewithin in an attitude for illumination thereof from an external light source, having a source of light, and further having means for directing light from said source onto a fluent-material-containing, translucent-body container disposed therefor by said container disposing means, to cause illumination of both said container and fluent material therewithin, wherein the improvement comprises:

said light source comprises means restricting illumination of a fluent-material-containing, translucent-body container to only approximately 0.05 foot-candle, to minimize undue surface reflection and light scattering, and further comprises means providing illuminative radiation in which a substantial portion thereof is within a range of approximately from 4900 to 5800 Angstrom units.

2. Apparatus, according to claim 1, wherein:

not less than 51 percent of said portion is within said range.

3. Apparatus, according to claim 1, wherein:

substantially all of said radiation is within said range.

4. Apparatus, according to claim 1, wherein:

said container-disposing means comprises means for effecting movement of a translucent-body, fluent-material-containing container.

5. Apparatus, according to claim 4, wherein:

said movement-effecting means includes means for moving a container in a plurality of directions.

6. Apparatus, according to claim 5, wherein:

said moving means comprises means for moving a container in both rotary and translating directions.

7. Apparatus, according to claim 1, further including:

means for displaying a pictorial image of a container and fluent material illuminated by said source at a location spaced apart from said container-disposing means.

8. Apparatus, according to claim 7, wherein:

said displaying means comprises a television camera and a television receiver, said camera being disposed for viewing a container and fluent material illuminated by said source, and said receiver being disposed at said location and operatively coupled to said camera to display a video image of such container and fluent material.

9. Apparatus, according to claim 8, wherein:

said camera comprises a video tube which is highly responsive to illumination in said range.

15. A method, according to claim 4, wherein:

said displaying step comprises viewing a container and fluent material illuminated by said light-directing step with a television camera, operatively coupling a television receiver to said camera, and displaying said image by said receiver.

16. A method, according to claim 15, wherein:

said viewing step comprises viewing a fluent-material-containing, translucent-body container with a television camera having a video tube which is highly responsive to said range.

10. An improved apparatus for inspecting a workpiece, having means for disposing a workpiece in an attitude for illumination thereof from an external light source, having a source of light, and further having means for displaying a pictorial image of such workpiece illuminated by said source at a location spaced apart from said workpiece-disposing means, said displaying means comprising a television camera and a television receiver, said camera being disposed for viewing a workpiece illuminated by said source, and said receiver being disposed at said location and operatively coupled to said camera to display a video image of such workpiece under illumination, wherein the improvement comprises:

said light source comprises means restricting illumination of a workpiece to only approximately 0.05 foot-candle, to minimize undue surface reflection and light scattering, and further comprises means providing illuminative radiation in which a substantial portion thereof is within a range of approximately from 4900 to 5800 Angstrom units.

11. An improved method of inspecting translucent-body containers, and fluent materials contained within such containers, comprising the steps of disposing a translucent-body container, having fluent material therewithin, in an attitude for illumination thereof from an external light source, providing a light source, and directing light from said source onto a fluent-material-containing, translucent-body container disposed therefor to cause illumination of both said container and fluent material contained therewithin, wherein the improvement comprises:

said light source providing step comprises providing an illumination restricted to only approximately 0.05 foot-candle, to minimize undue surface reflection and light scattering, and further comprises providing a light source having an illuminative radiation in which a substantial portion thereof is within a range of approximately from 4900 to 5800 Angstrom units.

12. A method, according to claim 11, wherein:

said light source-providing step comprises providing a source in which not less than fify-one percent of said portion is within said range.

13. A method, according to claim 11, wherein:

said light source-providing step comprises providing a source in which substantially all of said radiation is within said range.

14. A method, according to claim 11, further including the step of:

displaying a pictorial image of a container and fluent material illuminated by said light-directing step at a location spaced apart from said source.

17. An improved method of inspecting a workpiece, comprising the steps of disposing a workpiece in an attitude for illumination thereof from an external light source, providing a light source, directing light from said source onto said workpiece, and displaying a pictorial image of said workpiece illuminated by said light source, said displaying step comprising viewing the workpiece illuminated by said light source with a television camera, operatively coupling a television receiver to said camera, and displaying said image by said receiver, wherein the improvement comprises:

said light source providing step comprises providing an illumination restricted to only approximately 0.05 foot-candle, to minimize undue surface reflection and light scattering, and further comprises providing a light source having an illuminative radiation in which a substantial portion thereof is within a range of approximately from 4900 to 5800 Angstrom units.