Flicker400 Light Source Modulation Characterisation

  • Flicker400 Source Modulation Characterisation
  • Example Light Source Flicker
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+44 (0)118 975 1355

Comprising a close-match photometric detector, high-speed amplifier and data acquisition, the Flicker400 provides high-accuracy flicker percent, frequency and index assessment in a straightforward, highly repeatable procedure.

Whilst the photobiological impact of flicker is still widely debated, the implications for image recording equipment are undeniably apparent and of increasing significance with the continued adoption of SSL in studio and stadium environments.

Core benefits

Features

  • Windows control software (BenWin+) provides full automation via USB 2.0
  • Setup comprises a DH400-VL v-lambda detector, ORM400 photometric detector, the 477 and the USB Digital Scope.

Applications

  • ENERGY STAR® Method of Measurement for Light Source Flicker
  • California Energy Commission Appendix JA10
  • 1789-2015 - IEEE Recommended Practices for Modulating Current in High-Brightness LEDs for Mitigating Health Risks to Viewers
  • UEFA Stadium Lighting Guide 2016
  • CIBSE LG04 Lighting Guide 04: Sports Lighting - LG4
  • ASSIST recommends…Recommended Metric for Assessing the Direct Perception of Light Source Flicker, Volume 11, Issue 3 (ASSIST 2015)

Reported Parameters

  • Percent flicker
  • Flicker index
  • Flicker frequency

Photometric Detector/ ORM400

Spectral functionCIE 1924 V(λ) Spectral Luminous Efficiency Function for Photopic Vision
Spectral response range380-780nm
Photopic match, f1<3%
Angular response, f2 <1.5%
Linearity, f3 < .2%
Typical responsivity5x 10-10A/lux
Calibration traceabilityPhysikalisch-Technische Bundesanstalt (PTB, Germany)
Diffuser diameter7mm
Stray light suppressionVariable aperture baffle tube
ConnectorBNC
Amplifier gain ranges1010-105 V/A
Maximum input100µA
Input impedanceVirtual ground
Gain accuracy & stability±1 %, 200 ppm/ °C
Output stability5-500 ppm/ °C dependent on gain range
ADC resolution4 ½ digit BCD (0 to 19999) (>14 bit resolution)
Luminous intensity range0.01D2-200000D2 (D photometric distance (m))

477 - AC Current Pre-amplifier frequency response

V/ABandwidth (-3Db)
103>1MHz
1041MHz
105260kHz
10630kHz
10723kHz
1084kHz

General

Power supplyPMC MAC ORM400
InterfacePMC MAC ORM400 USB 2.0

System Requirements

ComponentCurrent (220V) (A)
ORM400<0.1
Total<0.1
Example LED Flicker Characterisation
Example LED Flicker Characterisation
Example Source Flicker Characterisation
Example Source Flicker Characterisation

Software Control

BenWin+ software package captures data acquisition and export, alongside performing flicker percent and flicker index calculations.

A comprehensive SDK is made available where enhanced functionality or incorporation of third party instruments are required.

The Bentham Standard

We’re with you from the first call to the final result

Call us on +44 (0)118 975 1355 or email us