HIGH-PERFORMANCE OPTICAL MEASUREMENT EQUIPMENT AND SYSTEM SOLUTION

OPTICAL MEASUREMENT SYSTEM SOLUTION

OPTICAL CONTINUITY TESTER

PRODUCT OVERVIEW
OPTICAL CONTINUITY TESTER

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Optical Continuity Tester is a high speed and high accuracy continuity inspection system to test continuity on each channel of multi-channel polymer optical waveguide for OPCB substrate.

One-shot irradiation system for measurement light makes it possible to measure continuity on multi-channel polymer optical waveguide at one time. This technology realizes high-speed optical continuity test for polymer optical waveguide for OPCB substrate at mass production.

MEASUREMENT METHOD OF OPTICAL CONTINUITY TESTER

On the OPCB substrate, the signal is transmitted through the conversion of electric signal – optical signal – electric signal between light emitting device and light receiving device mounted on the substrate that forms optical waveguide. Therefore it is mandatory to test optical continuity on optical waveguide.

We have developed new technology to incident one-shot stable and uniform irradiation at wide measurement area so that perform highspeed and high-accuracy optical continuity test without optical fiber alignment technology.

Our new technology does not require sub-micron-order precise positioning like conventional optical fiber alignment so that it is possible to incident uniform light rapidly into multi-channel polymer optical waveguide. Captured light should be detected as image signal by high resolution and high dynamic range imaging detector. Only propagation optical intensity signal from optical waveguide shall be extracted and processed with proprietary software having special image processing algorithm. This technology makes it possible for high speed and high-accuracy continuity test on each channel of polymer optical waveguide for OPCB substrate.

FEATURE

  • Optical continuity tester with one-shot irradiation system for measurement light as mass production inspection compliant.
    • Newly developed one-shot irradiation system for measurement light and high NA detection optical system should realize high speed and high accuracy test.
  • Extraction, processing and automatic measurement only for propagation optical intensity signal from optical waveguide with proprietary software.
  • In combination with high precision motorized stage system, it is possible to execute additional function such as defocusing mode measurement, core shape / pitch / position measurement, full-automatic measurement system and so on.

APPLICATION

  • High-speed optical continuity test for polymer optical waveguide for OPCB substrate at mass production.
    • Pass/Fail judgement of continuity condition by relative loss measurement and comparison with reference.
  • Defocus measurement
    • Area intensity measurement at virtual position of detector.
  • Core pitch measurement
  • Core position measurement
  • Inclination measurement of 45° built-in mirror in polymer waveguide.

SYSTEM COMPONENT SELECTION

SYSTEM CONFIGURATION DIAGRAM
COMPONENT SELECTION
  • Wide area uniform light irradiation unit
    • Output N.A. : 0.57
    • Irradiation size : approx.φ4mm (@5mm gap)
    • Uniformity in irradiation surface : ±2%
    • Light source : 850nmLED
    • Center wavelength of light source : 850nmLED (FWHM:±40nm)
    • Maximum output power : approx. 15mW
    • Output light stability : ±1%
  • Dedicated large N.A. measurement optics
    • Detection N.A. : 0.4
    • Optical magnification : 5× (20× objective lens is used）
    • Field of view : 1.28mm×0.96mm
  • Detector
    • 400~1100nm: High Resolution CMOS Detector ISA071
      • Total pixels : 2048×1536 pixels (approx. 3.2 megapixels)
      • Pixels pitch : 3.45×3.45μm
      • Sensor size : 1/1.8 inch
      • Gradation : 12bit
  • Stage system
    • Stage system for input side light irradiation unit
    • Stage system for output side measurement optics
    • System platform, bracket, etc,
  • Sample stage
    • Sample stage
    • Sample holder
  • System Control
    • Computer for data processing and system control
    • Monitor for operation
    • Control and analysis software for Optical Continuity Tester
    • Stage control system
    • System main control unit
    • System power supply unit
    • Safety equipment etc.
  • Incidental facilities
    • Shield box
    • Vibration isolated stage
  • *Configuration written above is a standard example, and we can deliver any configuration according to the applications.

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