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    LEDGON 100 Goniophotometer

    The LEDGON Goniophotometer from Instrument Systems determines the spatial radiation pattern of LEDs and small LED modules.

    Category: Instrument Systems Tags: Goniophotometer, Instrument Systems, Light and Display
    • Description
    • Specifications
    • Download Data Sheet

    Description

    The LEDGON goniophotometer from Instrument Systems determines the spatial radiation pattern of LEDs and small LED modules. Measurement is made over the whole forward hemisphere of an emitting LED. A high angle resolution of 0.1° means exact measurements even for narrow emission angle LEDs. In combination with the CAS 140CT spectroradiometer, additional spectral parameters, such as the angle dependence of color coordinates or color temperature, can also be measured. White LEDs, for example, exhibit a significant angle dependence of the color temperature.

    Exact measurements of luminous flux and total radiant power

    The LEDGON goniophotometer can also be used for accurate determination of luminous flux and total radiant power. The measurement errors typical of integrating spheres (due to their geometry) are avoided. Instrument Systems has developed an appropriate add-on for the SpecWin Pro software that fully automates the measurement process.

    Set up details:

    The set-up consists of an optical rail with two permanently mounted rotation stages for angles theta and phi. The rotation stage for phi has a hollow shaft that is compatible with the LED test sockets from Instrument Systems (all except LED-850). The optical probe is located at the opposing end of the optical rail, and can be positioned at any distance between 5 and 70 cm with respect to the LED. The whole set-up is contained in a lightproof housing with a hinged cover.

    Specifications

    LEDGON-100 – Goniophotometer
    Angle range: theta axis: approx. +/- 100° ; phi axis: 360°
    Angle accuracy: theta axis: 0.1° ; phi axis: 1°
    LEDGON-130 – sample table
    Clamping range 2 x 15 mm
    Max. test size 112 x 112 x 48 mm (W x L x H)
    Max. test weight 700g
    Electrical connections 10 x 0.1mm² max. 1A; 2x 0.75 mm² max. 6A
    LEDGON-131 xy translation stage
    Travel range 49 mm per axis
    Max. test size 64 x 85 x 25 mm (W x L x H)

    Further information:

    Model Model description

    LEDGON-100

    goniophotometer for LEDs and small LED modules; lightproof configuration with optical bench (without measuring head); includes stepper motor controller
    LEDGON-105 slit on side of LEDGON for fiber feed-through
    LEDGON-120 measurement head with diffuser (1cm² area); including OFG-414 fiber bundle and PLG-410 fiber connector adapter; spectral range 380 – 1600 nm
    LEDGON-121 measurement head with diffuser (1cm² area); incl. OFG-424 quartz glass fiber bundle and PLG-420 fiber connector adapter; spectral range 190 – 1350 nm
    LEDGON-124 rail carrier for mounting LED25-100 integrating sphere in LEDGON
    LEDGON-125 complete measurement head comprising ISP25 integrating sphere with 1cm² entrance aperture, rail carrier, OFG-424 and PLG-420; spectral range 220 – 1350 nm
    LEDGON-130 sample table for LED modules and mini-displays
    LEDGON-131 XY translation stage for LEDGON-130 sample table
    LEDGON-135 Alignment laser for optical rail in LEDGON

    Download Data Sheet

    LEDGON 100 Goniophotometer

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