Double-telecentric optical imaging system of high telecentric degree
An optical imaging system and optical system technology, applied in the field of double-telecentric optical imaging system, can solve the problems of large image distortion and large telecentricity, and achieve the effect of reducing image deformation error and improving measurement and detection accuracy
Pending Publication Date: 2018-07-10
SUZHOU LIGHTLNS OPTICAL TECH
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Problems solved by technology
At present, the detection imaging lenses launched by most manufacturers on the market can only satisfy one of the object-space telecentricity or the image-space telecentricity, and cannot achieve both. At the same time, their telecentricity is relatively large; for scanning / detection The image of the parts will produce large image distortion
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[0047] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0048] combine figure 1 A double-telecentric optical imaging system with high telecentricity is shown, along the direction of the optical axis, from the object side to the image side, there are sequentially provided with a front group distance extender system, a rear group double Gaussian system and an image plane CCD / CMOS, the optical system satisfies the following conditions:
[0049] [Condition 1]
[0050] △1<0.1°;
[0051] [Condition 2]
[0052] △2<0.1...
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The invention discloses a double-telecentric optical imaging system of a high telecentric degree. A front-group distance increasing system, a back-group double Gassian system and an image plane CCD / CMOS are arranged successively from one side of the object plane to one side of an image plane along the optical axis; and the optical system satisfies that delta1<0.1 degree and delta2<0.1 degree, delta1 represents an included angle between the optical axis and main light of each visual field entering the optical system via one side of the object side, and delta2 represents an included angle between the optical axis and main light of each visual field output to the image plane CCD / CMOS from the system. The optical system can improve the measuring and detecting precision effectively, reduce image deformation and error caused by movement of the system, satisfy requirements for being telecentric in both the object and image sides, and can be widely applied to the high-technical type integration fields including machine vision, industrial detection, smart logistics and system integration.
Description
technical field [0001] The present application relates to an optical system, in particular to a double-telecentric optical imaging system with high telecentricity. Background technique [0002] With the current acceleration of industrial integration, more and more equipment is developing in the direction of ultra-high precision; the precision and accuracy of each component requires corresponding machine testing to ensure the quality of the component; the extended intelligent super The high-precision detection system was born, and the market demand is getting bigger and bigger. A subsystem required by an ultra-high-precision detection system is an optical system; it includes an illumination source system, an optical imaging system, etc.; and what this patent involves is the imaging system, that is, an optical lens. At present, the detection imaging lenses introduced by most manufacturers on the market can only satisfy one of the object-space telecentricity or the image-space...
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CPCG02B13/22
Inventor 吴刘森陈艺敏李栗河万宣梅
Owner SUZHOU LIGHTLNS OPTICAL TECH