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Speaker: 陳琮夫 Advisor: 梁肇文 老師 Date:20130320

Weekly Report. Speaker: 陳琮夫 Advisor: 梁肇文 老師 Date:20130320. Lensarray Calibration. Image of autocollimator PS: This pic is error !!! We align the reflection image to the ghost image. Lensarray Calibration. The convex surface of lensarray the beam normal insert to the lensarray.

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Speaker: 陳琮夫 Advisor: 梁肇文 老師 Date:20130320

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  1. Weekly Report Speaker:陳琮夫 Advisor:梁肇文 老師 Date:20130320

  2. Lensarray Calibration Image of autocollimatorPS: This pic is error !!! We align the reflection image to the ghost image

  3. Lensarray Calibration The convex surface of lensarray the beam normal insert to the lensarray

  4. Lensarray Calibration

  5. Lensarray Calibration

  6. Lensarray Calibration

  7. Advisor • 確認中間偏暗十字是否為 reference還是 ghost image • 確認正射下 nomal reflection error (未回答道問題)

  8. Weekly Report Speaker:陳琮夫 Advisor:梁肇文 老師 Date:20130327

  9. Outline • Calibration the lensarray and CCD protecting glassNext : use the least square fitting to calibrate

  10. Calibration the lensarray and CCD autocollimator CCD The beam from autocollimator normal reflect to the protect glass above the ccd sensor

  11. Calibration the lensarray and CCD autocollimator CCD lensarray The beam from autocollimator normal reflect to the lensarray in front of the ccd sensor . PS: Here we adjust the cross image to match the center of ccd

  12. autocollimator CCD • Calibration the lensarray and CCD lensarray snap Without the pinhole With the 50um pinhole

  13. light • Calibration the lensarray and CCD sensor lensarray glass PS: First, align the autocollimator and ccd glass. Secondly, place the lensarray. Lensarray is not parallel to the glass

  14. Calibration the lensarray and CCD

  15. Calibration the lensarray and CCD

  16. - 0.00001578 (rad) = - 0.054 arcmin 0.00003813 (rad) = 0.131 arcmin • Calibration the lensarray and CCD ERROR 俯視 側視

  17. Calibration the lensarray and CCD

  18. 0.00002166 (rad) = 0.07447 arcmin 0.0000226 (rad) = 0.07769 arcmin • Calibration the lensarray and CCD ERROR 俯視 側視

  19. Weekly Report Speaker:陳琮夫 Advisor:梁肇文 老師 Date:20130403

  20. 5.376 arcmin arcmin • Calibration the lensarray and CCD 俯視 側視

  21. Calibration the lensarray and CCD ? lensarray CCD

  22. Align CCD&Lensarray • Flow chart Catch the picture Get the x,y coordinate Calibration: Misalignment effect Stick !!!! Place the testing lens Catch the picture Asign the ShackHartmann pattern Centroid Calibration Wavefront Reconstruction

  23. histogram Saturation points Exposure time Gain

  24. histogram Centroid

  25. histogram !!! 不直接用function preview

  26. Weekly Report Speaker:陳琮夫 Advisor:梁肇文 老師 Date:20130410

  27. Calibration the lensarray and CCD 將 lensarray 黏上 CCD 之後角度變化11.15 arcmin arcmin

  28. Calibration the lensarray and CCD =( sin(dx)cos(dy), sin(dy), cos(dx)cos(dy) ) y dθx dθy z x

  29. Calibration the lensarray and CCD y x’ x y’ dθy dθx

  30. Calibration the lensarray and CCD • Find the x and y • Shift the centroid to the CCD center

  31. Calibration the lensarray and CCD • Find the x and y • Shift the centroid to the CCD center • Calibration the tilt angle -> too small !!!!

  32. Calibration the lensarray and CCD X direction y direction

  33. Weekly Report Speaker:陳琮夫 Advisor:梁肇文 老師 Date:20130417

  34. Align CCD&Lensarray • Flow chart Catch the picture Get the x,y coordinate Calibration: Misalignment effect Calibration: Defocus effect Place the testing lens Stick !!!! Catch the picture Asign the ShackHartmann pattern Centroid Calibration: Oddaberration Wavefront Reconstruction

  35. Calibration the lensarray and CCD • Tilt angle of the LensArray • The maximum pixel shift • Wavefront slope error ; pixel size = 0.044 mm

  36. Calibration the lensarray and CCD Rotate it more than 1.5 degree , using central area to analysis

  37. Calibration the lensarray and CCD 取所有點的平均 之後做 least-square fitting where ,

  38. Calibration the lensarray and CCD • Method 1. W.D. = spot shift/tan⁡(∆𝜃); Ave_W.D.=4269.560 μm • Method 2. WD(x) = fitted_f(x) / x Working distance

  39. Weekly Report Speaker:陳琮夫 Advisor:梁肇文 老師 Date:20130426

  40. polynomial function Hc(on focus) Hc(defocus) θ θ Δf EFL NOtE : polynomial function : where , φ=(tanθ) Hc(On focus) = (EFL+ ++ Hc (defocus) = ((EFL-Δf)+ + + Paraxial height

  41. Defocus effect on CodeV simulation Pixels tan(θ) (1174-982)*4.4=846.106 um = 0.846mm (1174-719)*4.4=1999.827 um = 2.000 mm

  42. Defocus effect on experiment Pixels tan(θ)

  43. Defocus effect on CodeVsimulation and experiment Pixels tan(θ)

  44. Defocus effect on CodeVsimulation and experiment Pixels tan(θ)

  45. Defocus effect on CodeVsimulation and experiment Pixels tan(θ)

  46. Weekly Report Speaker:陳琮夫 Advisor:梁肇文 老師 Date:20130508

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