Study of zero position variation for an optical sight by using a CCD

Zhao, Yuanyuan; Xiao, Zuojiang; Xu, Liang; Bao, Lei

doi:10.1364/jot.86.000374

Cited by 2 publications

(4 citation statements)

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“…To evaluate the accuracy of the proposed measurement method, the horizontal alignment deviation must be measured by considering the system errors. Therefore, the system installation errors, sensor parameters, and measurement errors are considered, and the influence of the error term on the measurement accuracy is studied with the Monte Carlo method [32]- [34].…”

Section: Error Analysismentioning

confidence: 99%

Method for Horizontal Alignment Deviation Measurement Using Binocular Camera Without Common Target

Wang

Shen

et al. 2020

IEEE Access

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In the application of using binocular camera to measure the horizontal alignment deviation, due to the limited field of view of the camera, it is difficult for each camera to obtain all the target points to determine the position of the parts. To this end, a binocular position measurement model, where each optical camera corresponds to one cooperative target point, is established to determine the horizontal alignment deviation between the upper and lower parts. To overcome the problem of insufficient information in calculating the horizontal alignment deviation, the measurement data of a biaxial inclinometer and laser rangefinder are added. The Monte Carlo method is used to determine the error level for any position and attitude in the measurement range based on past work experience. The high accuracy of the position measurement method (the overall error does not exceed 2 mm) for a binocular camera without a common target meets the actual application requirements. This conclusion is verified by the experimental results. INDEX TERMS Binocular position measurement, horizontal alignment deviation, no common target, biaxial inclinometer, laser ranging, Monte Carlo method

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Section: Error Analysismentioning

confidence: 99%

Method for Horizontal Alignment Deviation Measurement Using Binocular Camera Without Common Target

Wang

Shen

et al. 2020

IEEE Access

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“…Since there are frequently variable and unmeasurable skew angles between the beam and the receiving system caused by alignment error, the measurement is expected to be only related to the incident energy, not the incident angle. When the spot is small, a CCD camera is commonly used [ 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. The beam can act directly on the CCD array in the camera [ 8 , 9 ] or be imaged on various screens and shot by the camera [ 1 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…The beam can act directly on the CCD array in the camera [ 8 , 9 ] or be imaged on various screens and shot by the camera [ 1 , 10 , 11 ]. Such methods have the advantage of high resolution [ 12 , 13 ]. However, on the one hand, shooting requires precise space alignment, so fast servo equipment is necessary [ 12 , 14 ], which adds difficulty to practical applications.…”

Section: Introductionmentioning

confidence: 99%

“…Such methods have the advantage of high resolution [ 12 , 13 ]. However, on the one hand, shooting requires precise space alignment, so fast servo equipment is necessary [ 12 , 14 ], which adds difficulty to practical applications. On the other hand, the measurable spot size is limited by distortion, which is easily caused by the large field of view.…”

Section: Introductionmentioning

confidence: 99%

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Study on Laser Parameter Measurement System Based on Cone-Arranged Fibers and CCD Camera

Luo

Qin

Hou

et al. 2022

Sensors

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This paper proposes a new laser parameter measuring method based on cone-arranged fibers to further improve the measurable spot size, allowable incident angle range, and spatial sampling resolution. This method takes a conical array composed of flexible fibers to sample and shrink the cross-section spot of the laser beam, facilitating low-distortion shooting with a charge-coupled diode (CCD) camera, and adopts homogenized processing and algorithm analysis to correct the spot. This method is experimentally proven to achieve high-accuracy measurements with a decimeter-level spot-receiving surface, millimeter-level resolution, and high tolerance in order to incite skew angle. Comparing the measured spot under normal incidence with the real one, the root mean square error (RMSE) of their power in the bucket (PIB) curves is less than 1%. When the incident angle change is between −8° and 8°, the RMSE is less than 2% and the measurement error of total power is less than 5% based on the premise that the fiber’s numerical aperture (NA) is 0.22. The possibility of further optimizing the measurement method by changing the fiber parameters and array design is also reported.

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Study of zero position variation for an optical sight by using a CCD

Cited by 2 publications

References 0 publications

Method for Horizontal Alignment Deviation Measurement Using Binocular Camera Without Common Target

Method for Horizontal Alignment Deviation Measurement Using Binocular Camera Without Common Target

Study on Laser Parameter Measurement System Based on Cone-Arranged Fibers and CCD Camera

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