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Pearl CM-127 Instruction Manual

Centering microscopes
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Instruction Manual
for the
CM-127
CM-127TV
Centering Microscopes

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Summary of Contents for Pearl CM-127

  • Page 1 Instruction Manual for the CM-127 CM-127TV Centering Microscopes...

  • Page 2: Table Of Contents

    Thank you for purchasing one of our CM-127 Centering microscopes. To get full and long lasting performance, and to enjoy all the functions of this equipment, use the microscope as described in this manual. Features of the Centering Microscope The Centering microscope is used to evaluate optical lenses and plate materials. To evaluate eccentricity, manually rotate the object to measure to allow you to evaluate the amount of eccentricity by the amount of tilt in the transmitted light beam.

  • Page 3: Configuration And Name Of Each Part

    1. Configuration and Name of Each Part 1-1. Configuration 1) Main housing CM-127 CM-127TV 2) AC adapter 3) Extension cord 4) Lens adapter 7) Camera adaptor (TV) 6) BNC coaxial cable (TV) 5) 12-pin camera cable (TV)
  • Page 4 8) Monitor (TV) 9) Power cable (TV) 10) Instruction manual 1) Main housing CM-127 / CM-127TV 2) AC adapter AC adapter 3) Extension cord With an ON/OFF switch 4) Lens adapter 5) Camera cable 12 pin, round connector (CM-127TV) 6) Coaxial cable...
  • Page 5 1-2. Name of each part Eyepiece Mirror barrel clamp Lock knob Fine adjustment handle Objective lens Stage Lens holder CM-127TV Collimating lens adjustment ring Stand Stage fine CCD camera adjustment knob Relay lens Light source Base...

  • Page 6: Assembling And Preparation Before Use

    2. Assembling and Preparation before Use Connect each cable. (1) CM-127 Plug the AC adapter into the extension cord with a switch. Turn the light source on/off using the switch on the extension cord. Plug into a wall outlet. Insert the AC adapter...

  • Page 7: How To Use

    3. How to Use (1) Turn on the extension cord switch to turn on the light source. AC adapter Extension cord Turn on the switch (2) Turn on the power to the camera adapter and TV monitor to make the system ready for capturing CCD camera images.
  • Page 8 (4) Look through the eyepiece of the microscope and adjust the eyepiece until you can see the eyepiece scale clearly. (CM-127 only) (5) Turn the collimating lens adjustment ring left and right to find the middle of the range. Leave the ring in that position.
  • Page 9 (6) Loosen the lock knob and then turn the fine adjustment handle to the approximate position for the microscope’s objective lens, based on the lens you want to measure. Lock knob Fine adjustment handle Move the microscope down (7) While looking through the eyepiece (or the TV monitor in the case of the CM-127TV), turn the fine adjustment handle to move the microscope up.
  • Page 10 (8) When you can see the crosshairs, tighten the lock knob to fix the position of the microscope. *1: If you cannot see the crosshair image even after moving the microscope all the way up, lower the microscope and loosen the barrel. Then raise the barrel. After you can see the crosshairs, secure the barrel and then adjust the focus again by turning the fine adjustment handle.
  • Page 11 (9) Adjust the stage fine adjustment knob and slide the lens so that the crosshairs will be in the center of the view. Stage fine adjustment knob (10) When the crosshairs are at the center of the view, rotate the lens you want to measure.
  • Page 12 (11) When you rotate the lens, the crosshairs will also turn accordingly. Now, read the X axis feed amount on the scale. This feed amount is the total feed amount. Eccentricity is expressed as 1/2 of the total feed amount. Total feed amount X axis feed amount Eccentricity amount (θ) = Total feed amount / 2...
  • Page 13 Read the value for distance “A” that corresponds to one tick by referring to table 1. Table 1 Distance “A” Value of one tick in between the lens you the eyepiece want to measure and (minutes and the objective lens second) 10 mm 3 min.
  • Page 14 When you want to use the measured amounts of eccentricity for other calculations, if you measure a lens with a shorter focal distance the measurement error will be larger. Therefore, please note the following points about measurements. The distance between the target lens and the objective lens should be the precise distance between the main point in the target lens and the focal position of the microscope objective lens.

  • Page 15: Lens Adapter

    4. Lens Adapter This system is not capable of measuring most concave lenses (because the focal distance for concave lenses is a negative value.) However, if you use the lens adapter that is available as an accessory, you can measure some concave lenses. How to install the lens adapter Secure the center and lower stages and then remove the upper stage.

  • Page 16: How To Adjust The Light Level

    5. How to Adjust the Light Level If the lamp is too bright, adjust the light level as you like by inserting a slotted screwdriver into the light adjusting hole. Light source Precision slotted screwdriver (Available commercially) Light level adjusting hole...

  • Page 17: Reasons Why Lenses With Smaller Focal Distances Cannot Be Measured

    6. Reasons Why Lenses with Smaller Focal Distances Cannot Be Measured With the transmission type Centering measurement, focal distance “f” is a key factor for measurement. Finding the amount of eccentricity is effectively reading the θ angle of deviation. If the angle is identical between two lenses, the lens with a longer focal distance have a wider angle, which means that its eccentricity can be read easily.

  • Page 18: Measure To Take If The Fine Adjustment Handle Resistance Is Too Loose

    7. Measure to take if the Fine Adjustment Handle Resistance is Too Loose After a long use of this system, the fine adjustment handle may become loose and then the microscope may descend on its own. This is because the rack in the microscope has become worn. In this case, take the following steps.

  • Page 19: Specifications

    8. Specifications Model name CM-127 CM-127TV Application (object to measure) Convex lenses, concave lenses, doublet lenses, etc. Objective lens Eyepiece lens 10x (with a diopter adjustment) CCD camera 1/2-inch black and white Monitor 9-inch black and white Lens holder sizes φ10 to φ50...
  • Page 20 2015-01-29...

This manual is also suitable for:

Cm-127tv

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