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LAS-DMI™

Lens Air Gap Measurement

High Accuracy, Quick-Attach, On-Axis Distance Measuring Interferometer (DMI) for LAS™

 System Characteristics  

  • Quickly convert your LAS™ into a Distance Measurement Interferometer for on axis metrology of optical systems​

  • Measures center thickness and air gaps of all optical elements​

  • Powerful addition to the LAS™ for Lens Manufacturing & Assembly Process Control​

  • Extensive data reporting functions​

  • Lenscan™ Software enables straightforward measurements

Specifications

  • High Accuracy Quick-Attach LAS™ Distance Measurement Interferometer Accessory for on-axis metrology of optical systems

  • Uses Opto Alignment LAS™ precision centering and Fogale Nanotech low-coherence time-domain-scanning interferometry for measuring center thickness and air gaps of all optical elements (lenses, cubes, flats...) of an assembly along the optical axis

  • Powerful addition to the LAS™ for Lens Manufacturing & Assembly Process Control

  • Lenscan™ Software enables straightforward measurement procedure with extensive sample setup, definition, and data reporting functions

Operation

  1. Light emitted by an infrared SLD is coupled into monomode optical fiber

  2. Light split between measurement arm and reference arm

  3. Light coming back from both arms is directed onto photodetector

  4. When optical lengths of the measurement arm and the reference arm are equal, low-coherence interference is detected on the photo-detector

  5. High stability mechanics along with high resolution encoders and a specific calibration procedure enable high accuracy measurement

                                  SPECIFICATIONS

Tel: (704) 893 - 0399

Hours: 9am - 7pm

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