Abstract
To obtain 3D information of an object, the object must be measured. As a non-contact and active measurement method, structured light-based 3D measurement technology has a wide range of applications. The image quality of the projection lens determines whether the projection grating can be clearly projected on the detection object in the 3D measurement, which directly affects the detection effect. In this paper, a DMD projection imaging lens suitable for 3D measurement of structured light is designed. The effective focal length is 33.9 mm, F/# is 2.3, and the total length of the optical system is 120 mm. At a lens resolution of 93 lp/mm, the MTF values of all fields of view are greater than 0.5, the maximum distortion of the full field of view is less than 1%, the field curvature is less than 0.05 mm, and the imaging quality is good enough for 3D measurement.
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Funding. Major Scientific Research Project of Zhejiang Lab (2019DE0KF01).
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Song, T., Zhang, L., Shi, Y., Liang, H., Niu, H., Jin, S. (2021). Design of DMD Projection Lens for Structured Light 3D Measurement. In: Peng, Y., Dong, X. (eds) Proceedings of 2019 International Conference on Optoelectronics and Measurement. Lecture Notes in Electrical Engineering, vol 726. Springer, Singapore. https://doi.org/10.1007/978-981-33-4110-4_5
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DOI: https://doi.org/10.1007/978-981-33-4110-4_5
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