Structural Calculation and Optimal Design of Large-Aperture Long-Focal-Length Full-Frame Zoom Lens

Linkai Wen; Ying Liu; Yang Jiang; Yan Xing; Qiang Sun

doi:10.3788/LOP56.092201

Journals >Laser & Optoelectronics Progress >Volume 56 >Issue 9 >Page 092201 > Article

Laser & Optoelectronics Progress
Vol. 56, Issue 9, 092201 (2019)

Structural Calculation and Optimal Design of Large-Aperture Long-Focal-Length Full-Frame Zoom Lens

Linkai Wen^1、2, Ying Liu^1、*, Yang Jiang¹, Yan Xing¹, and Qiang Sun¹

Author Affiliations

¹ Precision Instrument and Equipment Research and Development Center, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China

² University of Chinese Academy of Sciences, Beijing 100049, China

show less

DOI: 10.3788/LOP56.092201 Cite this Article Set citation alerts

Linkai Wen, Ying Liu, Yang Jiang, Yan Xing, Qiang Sun. Structural Calculation and Optimal Design of Large-Aperture Long-Focal-Length Full-Frame Zoom Lens[J]. Laser & Optoelectronics Progress, 2019, 56(9): 092201 Copy Citation Text

show less

Fig. 1. Flow chart of optical design

Download full size

Fig. 2. Diagram of Gaussian structure of five groups of motion zoom lenses

Download full size

Fig. 3. Cam curves of zoom lens

Download full size

Fig. 4. Diagram of telephoto mode and its modulation transfer function. (a) Diagram of telephoto mode; (b) transfer function of telephoto mode under F#3.0

Download full size

Fig. 5. Diagram of wide-angle mode and modulation transfer function. (a) Diagram of wide-angle mode; (b) transfer function of wide-angle mode under F#3.0

Download full size

Fig. 6. Actual cam curves of 33-100 mm motion zoom lenses

Download full size

Serial number	Parameter	Technical indicator
1	Wavelength range	Visible light
2	Focal length /mm	33-100 (continuous)
3	F	3
4	Image size /mm	43.26 (diagonal length)
5	Angle of full fieldof view /(°)	24.421-66.510

Table 1. Parameters of zoom lens

Mode	D₁	D₂	D₃	D₄	Total length
Long focallength	≥25	≥0	≥1	≥0	≥155
Short focallength	≥1	≥0	≥0

Table 2. Lens group and total length boundary conditions for generalized Lagrangian multiplier method

Mode	D₁	D₂	D₃	D₄	Total length
Long focallength	≥0	≥0	≥0	≥0	≥130
Short focallength	≥2	≥0	≥0

Table 3. Lens group and total length boundary conditions for interior point method

Mode	D₁	D₂	D₃	D₄	D₅	Totallength
Long focallength	≥0	≥0	≥0	≥0	≥49	≥120
Short focallength	≥0	≥0	≥0	≥0

Table 4. Lens group and total length boundary conditions for sequence quadratic programming method

AlgorithmRelative aperture	GLM method		Interior point method		SQP
AlgorithmRelative aperture	f'	D/f'	f'	D/f'	f'	D/f'
Group 1	67.36	1/0.80	113.05	1/1.17	138.78	1/1.30
Group 2	-25.33	1/0.54	-37.47	1/0.54	-44.12	1/0.72
Group 3	51.45	1/1.89	52.15	1/1.68	41.93	1/1.75
Group 4	-145.79	1/3.64	-118.83	1/3.25	-99.92	1/3.64
Group 5	74.86	1/1.48	84.85	1/1.82	85.23	1/1.97

Table 5. Focal length and relative aperture of each lens group for three optimization algorithms

Algorithm	Total length oftelephoto mode /mm	Total length ofwide-angle mode /mm	Largest relativeaperture value(aperture/focal length)	Aperture ofgroup 1
GeneralizedLagrangian method	159.19	157.79	1/0.54	84
Interiorpoint method	180.58	182.42	1/0.54	97
Modified sequencequadratic programming	172.30	150.43	1/0.72	106

Table 6. Calculation results of three optimization algorithms

Download Citation

Set citation alerts for the article

Tools

Set citation alerts for the article

Save the article for my favorites

Paper Information