Method for determining optimal position of lens in scanning head
A technology for determining the best position and method, applied in image data processing, optics, instruments, etc., can solve problems such as the inability to adjust the lens to the best state, the inability to accurately control the lens feed, and the need for high proficiency in operations, and achieve education Training and proficiency requirements are not high, the effect of highlighting creative features and reducing labor intensity
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Embodiment 1
[0033] Embodiment one: see attached figure 1 and Figure 5 As shown, a method for determining the best position of the lens in the scanning head, its content is:
[0034] (1) Establish a section of detection interval A to B. This interval is centered on the theoretically optimal position of the lens during design, with a left and right offset of S distance, and S is taken as 0.25mm.
[0035] (2) At the beginning, the lens is placed at position A, and after the computer sends an instruction to start commissioning, the controller receives the instruction to drive the actuator to move the lens from one end A of the interval to the other end B, point by point during the movement of the lens Test a group of optical parameters a(x), b(x), c(x), d(x), ... related to the position of the lens, and record the test data. After the lens reaches B, the computer will record the test data according to The pre-established mathematical model y=f[a(x), b(x), c(x), d(x), ...] calculates and ju...
Embodiment 2
[0038] Embodiment two: see attached figure 1 and Figure 6 As shown, a method for determining the best position of the lens in the scanning head, its content is:
[0039] After the camera lens is moved to the best point E position by the method of embodiment one, in order to confirm the reliability of the lens adjustment position, test again and judge whether it is the best point, if the answer is, then the positioning ends the adjustment; if not, the computer sends command, make the actuator take the F point position when it stops as the center, and search for the best point E position in the interval GH with a left and right offset of Δx. After finding it, it will locate at this point. image 3 . Others are the same as the method in Embodiment 1.
Embodiment 3
[0040] Embodiment three: see attached figure 1 , a method for determining the optimal position of the lens in the scanning head, its content is:
[0041] (1) Establish a section of detection interval A to B. This interval is centered on the theoretically optimal position of the lens during design, with a left and right offset of S distance, and S is taken as 0.25mm.
[0042] (2) The minimum index value of y is set in advance; at the beginning, the lens is placed at position A, and after the computer sends an instruction to start commissioning, the controller receives the instruction to drive the actuator to move the lens from one end A of the interval to the other end B , test a set of optical parameters a(x), b(x), c(x), d(x), ... related to the lens position point by point during the lens movement, and calculate y=f[a(x) at the same time , b(x), c(x), d(x), ...] values, and compare and judge with the set minimum index value of y, when y≥the minimum index appears for the fir...
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