Acta Optica Sinica, Volume. 22, Issue 11, 1328(2002)
The Measurement of Long Focal Length Based on Talbot Effect of Ronchi Grating
A new method for long focal length measurement is presented, which is accomplished by obtaining the angle of moiré stripe formed by Talbot effect of Ronchi grating. The formula of calculating the long focal length from the angle of Moiré stripe is derived. Error analysis demonstrates that this method can be applied to the real time testing with high accuracy.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese]. The Measurement of Long Focal Length Based on Talbot Effect of Ronchi Grating[J]. Acta Optica Sinica, 2002, 22(11): 1328
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