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Acta Optica Sinica, Volume. 43, Issue 8, 0822024(2023)

Simulation Analysis and Experimental Study on Compression Molding of Chalcogenide-Glass Diffractive Surface

Jinping Chen1,2, Yue Liu1,2, Chuang Li1,2, Peng Song1,2, and Changxi Xue1,2、*
Author Affiliations
  • 1School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, Jilin, China
  • 2Key Laboratory of Advanced Optical System Design and Manufacturing Technology of the Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, Jilin, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (21)
    Equations (0)
    References (15)
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    Paper Information
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    Figures & Tables(21)
    Sixth-order generalized Maxwell model

    Fig. 1. Sixth-order generalized Maxwell model

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    Simulation model of local diffraction structure

    Fig. 2. Simulation model of local diffraction structure

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    Displacement constraint table

    Fig. 3. Displacement constraint table

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    Simulation results at different temperatures. Global graphs of simulation results at (a) 225 ℃, (b) 230 ℃, and (c) 235 ℃; local magnification graphs of simulation results at (d) 225 ℃, (e) 230 ℃, and (f) 235 ℃

    Fig. 4. Simulation results at different temperatures. Global graphs of simulation results at (a) 225 ℃, (b) 230 ℃, and (c) 235 ℃; local magnification graphs of simulation results at (d) 225 ℃, (e) 230 ℃, and (f) 235 ℃

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    Variation of stress with temperature

    Fig. 5. Variation of stress with temperature

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    Simulation results at different pressing velocities. Global graphs of simulation results at (a) 0.4v, (b) v, and (c) 3v; local magnification graphs of simulation results at (d) 0.4v, (e) v, and (f) 3v

    Fig. 6. Simulation results at different pressing velocities. Global graphs of simulation results at (a) 0.4v, (b) v, and (c) 3v; local magnification graphs of simulation results at (d) 0.4v, (e) v, and (f) 3v

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    Variation of stress with pressing velocity

    Fig. 7. Variation of stress with pressing velocity

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    Simulation results at different friction coefficients. Global graphs of simulation results at (a) 0, (b) 0.1, and (c) 0.3; local magnification graphs of simulation results at (d) 0, (e) 0.1, and (f) 0.3

    Fig. 8. Simulation results at different friction coefficients. Global graphs of simulation results at (a) 0, (b) 0.1, and (c) 0.3; local magnification graphs of simulation results at (d) 0, (e) 0.1, and (f) 0.3

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    Variation of stress with friction coefficient

    Fig. 9. Variation of stress with friction coefficient

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    Schematics of designed lens and glass preform. (a) Lens; (b) glass preform

    Fig. 10. Schematics of designed lens and glass preform. (a) Lens; (b) glass preform

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    Schematic of aluminum die dimension and product picture. (a) Die dimension; (b) product picture

    Fig. 11. Schematic of aluminum die dimension and product picture. (a) Die dimension; (b) product picture

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    Photograph of precision glass mold press machine (Model GMP-415V) from Toshiba Machine Co., Ltd.

    Fig. 12. Photograph of precision glass mold press machine (Model GMP-415V) from Toshiba Machine Co., Ltd.

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    Surface precision deviation of designed lens

    Fig. 13. Surface precision deviation of designed lens

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    Results of compression molding. (a) Photograph of molded lens; (b) result of molded lens measured by the Taylor Hopson profiler

    Fig. 14. Results of compression molding. (a) Photograph of molded lens; (b) result of molded lens measured by the Taylor Hopson profiler

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    Detection results of lens surface roughness

    Fig. 15. Detection results of lens surface roughness

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    • Table 1. Stress relaxation parameters of IG6 at 220 ℃

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      Table 1. Stress relaxation parameters of IG6 at 220 ℃

      ParameterValueParameterValue
      G114207τ10.004
      G26273.16τ21.579
      G319.279τ326.814
      G41.574τ4818.791
      G51.1399×10-12τ59351.5

    • Table 2. Parameters of WLF equation for chalcogenide glass IG6

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      Table 2. Parameters of WLF equation for chalcogenide glass IG6

      ParameterValue
      Tref /℃220
      C15.14
      C246.01

    • Table 3. Thermomechanical properties of glass and mold material

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      Table 3. Thermomechanical properties of glass and mold material

      Material propertyRSA905IG6
      Young modulus /MPa900035082.2
      Poisson ratio0.20.233
      Density ρ /（kg·m-3）2.954.63

      Thermal conductivity K /（W·m-1·K-1）

      Coefficient of thermal expansion α /（10-6 K-1）

      170

      24

      0.24

      21.3

    • Table 4. Coefficients of the designed lens

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      Table 4. Coefficients of the designed lens

      ParameterValue
      k0
      r0
      A-2.407681×10-5
      B2.503151×10-7
      C4.310176×10-10
      D-2.210201×10-12
      C1-8.01813×10-4
      C2-7.50124×10-7
      n2.7781

    • Table 5. Process parameters of molding

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      Table 5. Process parameters of molding

      NumberPressing velocity /（mm·s-1）Temperature /℃
      10.01225
      20.01230
      30.01235
      40.1225
      50.1230
      60.1235
      70.4225
      80.4230
      90.4235

    • Table 6. Surface precision of designed lens

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      Table 6. Surface precision of designed lens

      NumberSurface precision /μm

      1

      2

      3

      4

      5

      6

      7

      8

      9

      6.0121

      5.9293

      5.9905

      6.2742

      6.1753

      6.2237

      6.5341

      6.3234

      6.4641

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    Jinping Chen, Yue Liu, Chuang Li, Peng Song, Changxi Xue. Simulation Analysis and Experimental Study on Compression Molding of Chalcogenide-Glass Diffractive Surface[J]. Acta Optica Sinica, 2023, 43(8): 0822024

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    Paper Information

    Category: Optical Design and Fabrication

    Received: Oct. 27, 2022

    Accepted: Dec. 12, 2022

    Published Online: Apr. 6, 2023

    The Author Email: Xue Changxi (xuechangxi@cust.edu.cn)

    DOI:10.3788/AOS221885

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology