Acta Optica Sinica, Volume. 37, Issue 10, 1008001(2017)
Design of Off-Axis Virtual System Based on Anastigmatic Reflection Surface
Figures & Tables(10)
Fig. 1. Principle of astigmatism. (a) 2D schematic diagram; (b) 3D schematic diagram
Fig. 2. (a) Schematic diagram of visual display system; (b) optical path diagram of virtual display module
Fig. 5. Astigmatism diagram. (a) Negative field of view; (b) positive field of view
Table 1. Parameters of visual display system
View tableTable 1. Parameters of visual display system
Parameter Specification Wavelength Visible spectrum Field of view 60°×40° Pupil diameter 3 mm Active area 10 mm Tilt of reflector 90° Eye relief 100 mm
Table 2. Coefficients of the fitting polynomial
View tableTable 2. Coefficients of the fitting polynomial
Coefficient a0 a1 a2 a3 a4 a5 a6 Value 0 0.568 -8.311×10-3 7.304×10-5 -1.368×10-6 3.668×10-8 -5.275×10-10
Table 3. Tolerance data
View tableTable 3. Tolerance data
Tolerance type Specification Thickness ±0.05 mm Decent value ±0.05 mm Tilt ±3' Peak to valley surface error 2 μm
Table 4. Results of tolerance analysis
View tableTable 4. Results of tolerance analysis
Vertical field RMS of spot radius RMS of spot radius with tolerance Relative change /% 20 0.00912 0.00972 6.6 10 0.01089 0.01154 6.0 0 0.00713 0.00782 9.7 -10 0.01256 0.01323 5.3 -20 0.00983 0.01062 8.0
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Yuanming Zhao, Qingfeng Cui, Mingxu Piao, Lidong Zhao. Design of Off-Axis Virtual System Based on Anastigmatic Reflection Surface[J]. Acta Optica Sinica, 2017, 37(10): 1008001
Paper Information
Category: Geometric Optics
Received: May. 4, 2017
Accepted: --
Published Online: Sep. 7, 2018
The Author Email: Qingfeng Cui (qf_cui@163.com)
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