TY - GEN
T1 - Design of ultra-short throw ratio lens using annularly stitched aspheric surface
AU - Chen, Hailong
AU - Cheng, Dewen
AU - Wang, Yongtian
N1 - Publisher Copyright:
© COPYRIGHT SPIE.
PY - 2021
Y1 - 2021
N2 - Stitched surfaces have the advantages of high degrees of freedom and flexibility, which can improve the performance of imaging optical system while reducing volume and weight. In this paper, a new type of surface, called annularly stitched aspheric surface (ASAS), is demonstrated. Firstly, the definition of ASAS is given, and it meets the C1 continuity condition. Then, a high-precision conversion method from traditional aspherical surface to ASAS is proposed to establish the initial system with this novel surface. The optimization strategy and implementation method are explained. Special constraints that are needed when optimize the system with ASAS is also mentioned. Finally, the ASAS is applied to the design and an ultra-short throw (UST) ratio projector objective lens is optimized. The total length of the optimized system is only 155mm, the maximum distortion value is only 1.36%, and MTF value of full field of view at 66lp/mm is higher than 0.3. The result shows that this new surface type can increase the degrees of freedom and flexibility to optical system, verifying the feasibility of ASAS.
AB - Stitched surfaces have the advantages of high degrees of freedom and flexibility, which can improve the performance of imaging optical system while reducing volume and weight. In this paper, a new type of surface, called annularly stitched aspheric surface (ASAS), is demonstrated. Firstly, the definition of ASAS is given, and it meets the C1 continuity condition. Then, a high-precision conversion method from traditional aspherical surface to ASAS is proposed to establish the initial system with this novel surface. The optimization strategy and implementation method are explained. Special constraints that are needed when optimize the system with ASAS is also mentioned. Finally, the ASAS is applied to the design and an ultra-short throw (UST) ratio projector objective lens is optimized. The total length of the optimized system is only 155mm, the maximum distortion value is only 1.36%, and MTF value of full field of view at 66lp/mm is higher than 0.3. The result shows that this new surface type can increase the degrees of freedom and flexibility to optical system, verifying the feasibility of ASAS.
KW - Annularly stitched aspheric surface
KW - Optical design
KW - Surface description
KW - Ultra-short throw ratio projector
UR - http://www.scopus.com/inward/record.url?scp=85122372628&partnerID=8YFLogxK
U2 - 10.1117/12.2606174
DO - 10.1117/12.2606174
M3 - Conference contribution
AN - SCOPUS:85122372628
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - AOPC 2021
A2 - Wang, Yongtian
PB - SPIE
T2 - 2021 Applied Optics and Photonics China: Display Technology, AOPC 2021
Y2 - 20 June 2021 through 22 June 2021
ER -