Detection device for detecting macro-defects in infrared glass

A technology for infrared glass and macroscopic defects, which is applied in the direction of optical testing for flaws/defects, etc., can solve problems such as inconvenient operation, lack of infrared glass detection devices, complex devices, etc., and achieve strong adaptability to thickness and dimension changes, fast and convenient operation, and structural simple effect
CN102175690AInactive Publication Date: 2011-09-07NINGBO UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NINGBO UNIV
Publication Date
2011-09-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a detection device for detecting macro-defects in infrared glass, wherein an infrared light source, a circular tube, infrared transmitting flat ground glass, an infrared lens and an infrared planar array imaging detector are arranged in sequence; a detected infrared glass sample is placed between the infrared transmitting flat ground glass and the infrared lens; the inner wall of the circular tube is black and provided with screw threads capable of eliminating parasitic lights; the ratio phi1 / phi2 of the inner diameter phi1 of the circular tube to the diameter phi2 of the detected infrared glass sample is larger than or equal to 1 / 3 and less than or equal to 1, and the ratio L / phi1 of the length L of the circular tube to the inner diameter phi1 of the circular tube is larger than or equal to 5; the infrared light source, the infrared lens and the infrared planar array imaging detector share one optical axis; an adjustable power supply supplies power to the infrared light source; the infrared planar array imaging detector is connected to an image processing module; the image processing module is connected to a display; and the device uses a transmission imaging method, and can fast shoot detective images in the glass. The device provided by the invention has the advantages that the structure is simple, the cost is low, the operation is fast and convenient, the internal defects of infrared glasses with inner diameters from several to dozens of millimetres can be detected, and the adaptability to the thickness change of the glass is strong.
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Description

technical field

[0001] The invention relates to glass detection equipment, in particular to an infrared glass internal macro defect detection device. Background technique

[0002] Infrared glass has good infrared optical properties, such as easy adjustment of glass components, wide transmission spectrum range, large difference in refractive index and germanium single crystal, and easy to form an achromatic lens group with germanium lenses. Therefore, it is widely used in military and civilian applications. The scope of application of infrared glass is more and more extensive, and the requirements for the quality of infrared glass materials are also increasing. Macroscopic defects inside the glass (such as streaks, cracks, crystallization, phase separation, bubbles, etc.) have become one of the key indicators to determine the quality of infrared glass. Uniformity, and thermal inhomogeneity caused during the solidification forming process.

[0003] At present, some patents a...

Claims

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