Lens scanning imaging method
A scanning imaging and lens technology, which is applied in optics, measuring devices, and material analysis through optical means, can solve the problems of high error rate and low efficiency of lens imaging detection technology, so as to improve efficiency, resolution and imaging range , the effect of reducing the misjudgment rate
Active Publication Date: 2013-10-09
浙江四点灵机器人股份有限公司
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[0003] Purpose: In order to overcome the deficiencies in the existing technology and solve the defects of low efficiency and high error rate of the existing lens imaging detection technology, the present invention provides a method for lens scanning imaging
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[0016] In order to express the object, technical solution and advantages of the present invention more clearly, the present invention will be further described in detail in combination with the accompanying drawings and specific implementation examples.
[0017] Such as figure 1 , figure 2 , image 3 As shown, a lens scanning imaging method uses a line scan camera 1 to scan and image the surface of the lens 5. It is characterized in that: according to the difference in surface shape of the upper surface of the lens 5 to be detected, the optical axis 3 of the camera lens and the optical axis 4 of the lens Do not overlap, so that the imaging range of the line scan camera 1 covers the edge point of the upper surface of the lens to the center point of the upper surface of the lens, and then the lens 5 rotates around the optical axis 4 of the lens, and the line scan camera 1 scans the entire upper surface of the lens for imaging; wherein, the upper surface of the lens Defined as...
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The invention discloses a lens scanning imaging method. The surface of a lens is scanned and imaged through a line-scan digital camera, according to the difference of the types of the upper surfaces of lenses to be detected, the shot optical axis of the camera is not overlapped with the lens optical axis, the imaging range of the line-scan digital camera covers the edge points of the upper surface of the lens to the center point of the upper surface of the lens, then the lens rotates around the lens optical axis, and the line-scan digital camera scans the whole upper surface of the lens to be imaged; the upper surface of the lens is defined to be one surface, close to the line-scan digital camera, of the lens. According to the lens scanning imaging method, the line-scan digital camera inclines a certain angle, the shot optical axis of the camera is not overlapped with the lens optical axis, the depth of the scene to be measured can be reduced, reduction of the requirements of an optical system is facilitated, meanwhile, resolution ratio of the lens imaging is improved, the imaging range is expanded, and the misjudgment rate of lens defect detection can be reduced obviously, the efficiency of lens detection can be improved, the error rate is reduced, and the method is suitable for large-scale assembly line operation.
Description
technical field [0001] The invention relates to a lens scanning and imaging method, which belongs to the field of lens scanning and imaging, in particular to the imaging detection of spectacle lenses, and in particular to a lens imaging method for flaw detection and the like by using a line array camera to scan the lens for imaging. Background technique [0002] In recent years, more and more products with lenses have appeared in our lives, such as various camera lenses, mobile phone lenses, eyeglass lenses, etc. The quality of these lenses is directly related to the use effect of the product, so strict quality control is required in the production and processing stages of the lenses. At present, the quality of lens processing is generally detected by artificial visual method, that is, using natural light or adding a strong light source to directly judge possible quality problems with the naked eye. This method has low efficiency and high error rate, and it is difficult to ...
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IPC IPC(8): G02B26/10G01N21/958
Inventor 林斌张汝婷
Owner 浙江四点灵机器人股份有限公司