Optics and Precision Engineering, Volume. 33, Issue 9, 1420(2025)
High-precision assembly interval control of multilayer diffractive optical waveguide lenses based on hollow glass microspheres
Figures & Tables(18)
Fig. 1. Multilayer diffractive optical waveguide imaging principle and optical path propagation
Fig. 2. Simulation model of diffractive optical waveguide lens stacked structure in Zemax
Fig. 3. Influence of relative inclination angle between diffractive optical waveguide lenses on MTF
Fig. 8. Flow chart of sorting experiment of hollow glass microspheres
Fig. 10. Statistical results of particle size of hollow glass microspheres
Fig. 11. Mixing experiment results of hollow glass microspheres and UV adhesive
Fig. 12. High-precision stacking and interval measurement of multilayer diffractive optical waveguide lenses
Fig. 14. Experimental results of stacked assembly of diffractive optical waveguide lenses
Table 1. Performance parameters of hollow glass microspheres
View tableView in ArticleTable 1. Performance parameters of hollow glass microspheres
Performance parameter Value Appearance White and Good fluidity Specific gravity/（g·cm-3） 0.27-0.30 Bulk density/（g·cm-3） 0.11-0.13 Particle size/μm ≤65 Crush strength/psi 4 000 Flotation/% ≥95 Coefficient of thermal expansion/℃-1 3×10-6-5×10-6
Table 2. Mesh data for sieves
View tableView in ArticleTable 2. Mesh data for sieves
Pore size/μm Nominal/μm Mean/μm Maximum value/μm Minimum value/μm Range/μm 38 38 37.9 38.3 37.3 1 39 39 39.1 39.7 38.1 1.6 40 40 40.1 40.7 39.7 1
Table 3. Parameters of UV adhesive
View tableView in ArticleTable 3. Parameters of UV adhesive
Serial number Density/（g·cm-3） Viscosity/cP 1 1.05 10 000 2 1.07 20 000 3 1.06 30 000
Table 4. Statistical analysis of experimental results on stacked assembly of diffractive optical waveguide lenses
View tableView in ArticleTable 4. Statistical analysis of experimental results on stacked assembly of diffractive optical waveguide lenses
Detection region Whole plane Output coupling region Total quantity 50 groups 50 groups Interval error<1 μm 23 groups 31 groups The proportion of interval error<1 μm 46% 62% Interval error<1.2 μm 31 groups 34 groups Interval error<1.4 μm 34 groups 40 groups Interval error<2 μm 41 groups 49 groups The proportion of interval error<2 μm 82% 98%
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Jiarong BAI, Peng YAO, Kai LIU, Xiang LIU, Xi WANG, Fengguo LI, Dongkai CHU, Shijie HOU, Shuoshuo QU. High-precision assembly interval control of multilayer diffractive optical waveguide lenses based on hollow glass microspheres[J]. Optics and Precision Engineering, 2025, 33(9): 1420
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Received: Feb. 16, 2025
Accepted: --
Published Online: Jul. 22, 2025
The Author Email: Peng YAO (yaopeng@sdu.edu.cn)
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