Acta Optica Sinica, Volume. 40, Issue 20, 2022002(2020)
Testing of Concave Aspheric Surface with Self-Collimating and Correcting Lens in Front of Back Conjugate Point
Because of the current testing methods restricting the application of large-aperture, large-relative aperture concave aspheric mirrors, a large-aperture, large-relative aperture concave aspheric surface testing method based on near-double-lens is proposed. Different from the Offner testing method, the lens in the testing optical path is used as a correcting lens and a self-collimating-lens in the optical path before and after reflection. The initial structure is derived according to the third-order aberration theory. The testing results of using a single lens and a near-double-lens as correcting lens are shown in diagrams respectively and analyzed. The experimental results show that the testing method in which the self-collimating lens is located in front of the conjugate back point can be used for the testing of large-aperture, large-relative-aperture concave aspheric mirrors. The proposed method is simpler and more convenient in terms of processing, assembly and use, and provides a new idea for the testing of concave aspheric surfaces, and lays a foundation for the use of three lenses to test concave aspheric surfaces with larger apertures and relative apertures.
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Pengwei Zhao, Lili Qi, Jinping Zhang, Liehua Zheng. Testing of Concave Aspheric Surface with Self-Collimating and Correcting Lens in Front of Back Conjugate Point[J]. Acta Optica Sinica, 2020, 40(20): 2022002
Category: Optical Design and Fabrication
Received: May. 26, 2020
Accepted: Jul. 6, 2020
Published Online: Sep. 30, 2020
The Author Email: Zheng Liehua (dimo818@126.com)