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Fiber light for olympus microscope


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Fiber-light i invented for Olympus microscope for Optical Tweezers.

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Fiber light for olympus microscope

  1. 1. Fiber-light for Olympus Microscope Optical Tweezers Fiber-light system for Olympus IX71 microscopeHow to make a fiber light system for your microscope?
  2. 2. Optical Tweezers enclosureMicroscope wall
  3. 3. Microscope wall temperature inside enclosure compared: Halogen lamp Vs Fiber-light
  4. 4. Why fiber-light is important ?• DNA experiments are really sensitive to temperature (thermalenergy) even few degrees make a big difference.• Microscope (optical trap) is enclosed inside an enclosure (to avoidairborne noise and currents), so within few hours temperature of themicroscope wall rises almost twice due to the halogen lamp used forillumination, this heats up the entire enclosure so as the sample.• Temperature hike may make two similar data sets which are takensome time apart different.• Fiber light solves the problem of temperature hike by providing cleanlight and by removing heat production through the lamp andconduction through the microscope skin.• With fiber light temperature inside the enclosure goes from 23.7 to25.5 total 1.8 degree Celsius hike in comparison to halogen lampwhere temperature goes from 23.7 to 49 total 25.3 degree hike over aperiod of 10 hours (see slide 3).
  5. 5. Construction of Fiber-light system Fiber light has 4 parts Olympus power supply Model TH4-100 Dolan Jenner optical fiber bundle Fiber-light feeder Illuminator & fiber plugin adapter
  6. 6. Olympus Power supply Model TH4-100 TH4-100 has 4 holes Connect +ve 12V and ground with a wire at one end and other end is banana connectors
  7. 7. Construction of fiber plugin adapter at illuminator Illuminator Fiber plugin adapter
  8. 8. Construction Steps Remove illuminator from microscopeRemove the Halogen lamp Remove all the enclosures
  9. 9. Assemble the fiber pluginER2-thorlsba 2’’ cage assembly rod AD11F-thorlabs adapter S1TM08-thorlabs lens cell adapter SM1L03-thorlabs lens tube CP02-thorlabs cage plate
  10. 10. Put lens cell adapter on the cage plate Put lens tube on different cage plate and assemble Put other lens cell on one end of cage plate and adapter on other end
  11. 11. Fixing the Illuminator center wall Little stageMake 2 notches aligned with center of holes on the cage
  12. 12. Make a through hole ¾ cm from the notch and from the edge
  13. 13. Make a metal piece looks like in the picture the hole are aligned with each other
  14. 14. Put the piece such the hole are aligned
  15. 15. Put the plugin on the illuminator Put the screws
  16. 16. Put a screw and a nut
  17. 17. Illuminator with fiber plugin adapter is complete
  18. 18. Cushion Z- adjustment ScrewsPut a rubber cushion (optional) and insert the fiber through the opening and tight the screws
  19. 19. Construction of Fiber-feeder Lamp mount Lens assembly Fiber outlet adapter 6 X3X2.5 inches aluminum box
  20. 20. Banana connectors Prepare the box 3/8’’ hole for 3/8’’ holes for rubber legs lamp mount 1.25’’ 2.25’’ .5’’ .5’’ 50mm .25’’ Lamp side Bottom side ¼’’ hole for lens assembly 3/8’’ hole for fiber outlet adapter 1’’ hole for fiber outlet Fiber outlet side
  21. 21. Preparing Lamp Mount PCB platesBanana connectors Metal plates Halogen lamp 4/40’’ blind hole ½’’ long in PCB WARNING: Lamp gets really HOT so DON’T use plastic, wood or anything which burns below 500o Celsius
  22. 22. 3/8’’ through holes• I used 6 fold of PCB plates to mount the metal plates with ½’’ long blind screws.• Metal plates are aluminum plates which I machined to fit the lamp wire connectors.• Metal plates are attached into PCB plates with 4/40’’ blind screws.• PCB plates are screwed to the wallwith 3/8’’ screws.• PCB plate can tolerate hightemperatures and providegood isolation for the metal plates. 4/40’’ screw on 3/8’’ holes in metal
  23. 23. Preparing Fiber outlet adapterCP02T-thorlabs cage plateSM1T2-Thorlabs coupler SM1A1-Thorlabs adapter
  24. 24. Insert adapter into coupler and then coupler into cage plate• On wood side cage plate do not use the wood like shown in the picture.• Put another cage plate on that sidewith another adapter and coupler.• I did not have extra set in my lab so I used wood.
  25. 25. Mount in with 3/8’’ screw to the boxDo not use wood use 2 cage plates with 2 couplers and 2 adapters
  26. 26. Preparing Lens assembly CP02T-thorlabs cage platesLA1951-A thorlabs f25mm lensRA90-thorlabs post clamp ER2-thorlsba 3’’ cage assembly rodTR2-thorlabs post Lens is to focus the light on the fiber inlet
  27. 27. Put lens assembly on the box Slide in z-direction to get optimum spot on the fiber inlet 50mmxy-adjustment to center the spot (lamp image) on the fiber inlet Lens assembly gives 3-D adjustment to the lens
  28. 28. Bad alignmentGood alignment
  29. 29. Spot can be further optimized by looking into illuminator
  30. 30. Illuminator at low intensity
  31. 31. Prepare the cover • Halogen lamp heats up the box • I did not put any fan inside because fan generates vibrations which can travel through the fiber bundle to the microscope and make optical trap noisy. • So fan has to be outside with no physical contact with the box. • To accommodate that I made 2’’ diameter holes. • Fan will be mounted from top trough the roof.
  32. 32. Mounted Fan
  33. 33. Bundle is now complete
  34. 34. Mount the illuminator on the microscope
  35. 35. Fiber-light with Optical Tweezers