The Study at Automatic Focusing Systems and Methods of Calibrated Focal Length Used in Precision Measurement

[in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]

Journals >Acta Photonica Sinica >Volume 34 >Issue 12 >Page 1921 > Article

Acta Photonica Sinica
Vol. 34, Issue 12, 1921 (2005)

The Study at Automatic Focusing Systems and Methods of Calibrated Focal Length Used in Precision Measurement

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¹[in Chinese]

²[in Chinese]

³[in Chinese]

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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. The Study at Automatic Focusing Systems and Methods of Calibrated Focal Length Used in Precision Measurement[J]. Acta Photonica Sinica, 2005, 34(12): 1921 Copy Citation Text

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Abstract

Introduced a method of controlling and calibrating focal length about zoom lens used in precision measurement in High-Speed TV Measurement Instrument.Systems adopted PC104 SysCentreModule,Motion Controller and Step Motor to realize precision control in the zoom systems.In addition,correct lens systematic error by precise calibrated focal length.In this method,it became possible that High-Speed TV Measurement Instrument Systems based on zoom lens were used in trajectory measurement and to improve measurement accuracy in shooting range greatly.

Keywords

Automatic focusing Calibrated focal length Zoom lens High-speed TV measurement

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