Zijin Deng, Changwei Li, Sijiong Zhang. Measurement of Lens Parameters Using a Shack-Hartmann Wavefront Sensor[J]. Laser & Optoelectronics Progress, 2025, 62(9): 0912004
- Laser & Optoelectronics Progress
- Vol. 62, Issue 9, 0912004 (2025)
Fig. 1. Schematic diagrams of determining the position of the reference point. (a) (b) Focal point F of the lens away from point source S; (c) focal point F of the lens at the point source S
Fig. 2. Schematic diagram of the focal length measurement
Fig. 3. Schematic diagram of the geometric relationship between the radii of the curvatures of the spherical waves at the rear principal plane of the lens and the front surface of the microlens array
Fig. 4. Schematic diagram of the reflection configuration for the radius of curvature measurement
Fig. 5. Schematic diagram of the experimental setup for lens parameter measurements
Fig. 6. Experimental setup for measuring lens parameters
Fig. 7. Determination of the position of the reference point by the evaluation function LSSCS
Fig. 8. LSSCS changes with position coordinates around points za and zb
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Table 1. Parameters of the test lens
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Table 2. Measurement results of the focal length
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Table 3. Measurement results of the radius of curvature
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Table 4. Measurement results of the refractive index
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Table 5. Errors in the refractive index caused by uncertainties in the parameters
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Table 6. Refractive index calculated for lenses of different thicknesses
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Table 7. Errors in the measurement of the focal length corresponding to different focal lengths of the microlens
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Table 8. Measurement of the focal length using different numbers of subapertures
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Table 9. Appropriate defocus amount for measuing different focal lengths
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