Closed-loop modulation method of adaptive linear-structure light
A technology of line structured light and modulation method, which is applied in the field of optical detection, can solve the problems affecting the three-dimensional measurement accuracy, the large volume of the measurement system, and the low brightness of line structured light, so as to improve the measurement accuracy, good line characteristics, reduce complexity and cost effect
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[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings:
[0034] See figure 1 , 2 , 3, 4, 5, 6, and 7, a large depth of field, adaptive, hoverable, fast-moving line structured light generation method, specifically including the following steps:
[0035] The first step is to design system parameters.
[0036] 1) Determine the range of working distance of line structured light
[0037] Such as figure 1 , The Gaussian laser beam emitted by the laser 1 passes through the first optical lens (aspheric lens) 2, is incident on the mirror 3, and then is reflected to the surface of the object to be measured. The focal plane of the Gaussian beam is at L 0 , The design depth of field is ΔL, where ΔL=L 2 -L 1 . According to the ABCD matrix calculation, the spot size of the beam after passing through the lens, the maximum working distance L 2 Spot size ω 2 , Minimum working distance L 1 The spot size is ω 1 . Length of line structure...
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