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Device in spinning preparation, ginning or the like for identifying foreign bodies of the same colour or the same brightness or imperfections

A technology of equipment and foreign objects, applied in the field of identification of fiber material flow, can solve problems such as complex lighting devices, and achieve the effect of simple structure

Active Publication Date: 2016-02-03
TRUETZSCHLER GRP SE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The document DE102010055523A describes a device in which color information and polarization states are recognized at the examination location, for which a complex lighting arrangement is required

Method used

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  • Device in spinning preparation, ginning or the like for identifying foreign bodies of the same colour or the same brightness or imperfections
  • Device in spinning preparation, ginning or the like for identifying foreign bodies of the same colour or the same brightness or imperfections
  • Device in spinning preparation, ginning or the like for identifying foreign bodies of the same colour or the same brightness or imperfections

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Embodiment Construction

[0016] figure 1 An example of a dichroic prism 4 according to an embodiment of the invention is shown for a 4-sensor camera that eliminates the above-mentioned disadvantages and makes it possible to combine not only the color information of the light but also the polarization state of the light. Applied in device or camera.

[0017] A dichroic prism 4 including four wedge prisms is fastened on the camera front panel 2 through a base 3 . The lens 1 of the camera is assembled on the front panel of the camera from the other side. The lens 1 projects the target scene to be observed onto the four sensors 5 , 6 , 7 and 8 through the beam splitting prism 4 . Here, by way of example, a CCD line sensor is selected as the sensor, which is arranged along its longitudinal axis on one of the four exit surfaces 9, 10, 11 and 12 of the beam splitter 4 and aligned with each other. .

[0018] Now, figure 2 The splitting of light on the dichroic prism 4 is shown. The white light W imping...

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Abstract

In a device in spinning preparation, ginning or the like for identifying foreign bodies or imperfections in or among a stream of fibre material (fibre flocks), for example made of cotton, foreign bodies in or among the fibre material are illuminable with the aid of a source of polarized light which cooperates with a detector appliance (camera). In order to allow the colour and polarization state to be detected reliably in a structurally simple manner, provision is made of a beam splitter device made of prism wedges for use in a camera system for detecting the colour and polarization state, wherein a part of the colour information is splittable and is detectable using image sensors of at least one wavelength range and the remaining wavelength range is divisible into two or more polarization states by at least one polarizing beam splitter layer and detectable by image sensors.

Description

technical field [0001] The invention relates to a device for detecting foreign bodies or impurities in or between a flow of fibrous material (fiber bundles), such as cotton, in preparation for spinning, ginning or similar processes, in which device it is possible to detect A (camera) cooperating polarized light source illuminates foreign objects in or between the fiber material. Background technique [0002] A problem when operating an optically operating inspection device is to distinguish good fiber material from foreign bodies or impurities that may be present in the same color or in the same brightness. A device is known from DE 10 2008 031 119 A with the use of infrared light, UV light (fluorescent effect) or a combination of polarized transmitted light and UV light. Document DE 10 2010 055 523 A describes a device in which color information and polarization states are detected at the examination point, for which a complex lighting arrangement is required. Contents o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/85D01G31/00G01N21/89
CPCD01G31/003G01N21/85G01N21/8915
Inventor 圭多·恩格斯
Owner TRUETZSCHLER GRP SE