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Reliability Test

    Thermal Shock Test   |   click here for more Tests

  • Purpose - To test if there is any stress at sealing area

  • Criteria - Change in glass or electrode material

  • Testing Procedures

    Step 1 - Leave the test lamp for 2 hrs at 25±2°C, 35~85% R.H. windless environment and then measure the lamp voltage, starting voltage, brightness and chromaticity.
    Step 2 - Lamp soaks in 100°C for 20 sec., and soaks in -190°C Liquid Nitrogen for 20 sec. Repeat the procedures for 20 cycles.
    Step 3 - Place the lamp for 2 hrs in 25±2°C windless environment and then measure electrical characteristics, brightness, chromaticity and starting voltage again.

  • Acceptance Criteria

    Lamp is able to lit.
    Lamps are not broken, or damaged.
    Appearance has no significant changes, deformed or decolorized.
    Starting voltage: Increase must be < 10% of initial value.
    Brightness: Above 80% of the initial value.

   
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