Multicells systems
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Multicells Systems

Company synopsis Pleiades Instruments is an optoelectronic system maker, designing and manufacturing for you specific systems such as photometric measurement and customized systems. Designing high performance devices, our team assists you in standard and specific need. Our devices are used by automotive and general lighting industry for the development, the testing, the calibration and the production of different types of products such as rear or head lamps. Goniophotometers and Multicells systems, by analyzing the spatial distribution and the photometric properties of different kind of...

Photometry and measurement Photometry Photometry is the science of the measurement of light, in terms of its perceived brightness to the human eye. Several photometry units can be used depending on what people want to study. Symbol Luminous Intensity Luminous Flux Candela per square meter [cd/m²] For Automotive lighting industry, the most common unit is the candela. It is the SI base unit of luminous intensity –power emitted by a light source in a particular direction, weighted by the luminosity function: V(λ)-. Luminosity Function This function, determinated in 1924 by the CIE, represents...

Illuminance is the total luminous flux incident on a surface, per unit area. It is a measurement of the intensity of the incident light. Illuminance is measured in lux. ф=I.Ω L=I/A Luminosity Intensity polar graph When the source can be considered as a point –for example a star- we have the formulas –if detector is perpendicular to the beam-: Photometric standards Photometric standards are defined according to geometries (Plane or Sphere), Units (Lux or Candela) and distances (10m for signaling and 25m or lighting). radius Surface ذݜ ðݑưݑݢĎݑҰݑ߰ݑ = Ұݑ. Ѱݑ߰ݑΰݑѰݑְݑ°ݑ, װݐ۰ݑ = ưݐ ۰ݑ ðݑpݑΰݑ۰ݑ ɰݑ...

Multicells Systems Multicells systems have been conceived and designed to analyze and characterize photometric properties of different products. A lens has been placed in order to make these systems more compact than any other system on the market. Cell detectors provide information about the luminous flux emitted in a particular direction. Different systems are available : Multicells System for signaling measurement (MES_S) or for lighting measurement (MES_L). Cell detectors These devices can be used to test and certify different products such as: tail, stop, turn indicator, lateral tail,...

Multicells System for Signaling Multicells rearlight reduced photometric systems allow measurement and qualification of rearlight products according to different standards (SAE, ECE, Japan) on short distance through a lens. Thanks to this device, useful for Research and Development as well as for the automotive lighting industry, our customers can test and certify many different products. Our multicells system for signaling has many assets : Stand alone system. Compact. High maximum load (25kg/55pounds). Large measurement range: 0.01 to 1500Cd. High photometric resolution. Thanks to their...

Multicells system for signaling characteristics: Measurement cells Photometric range Photometric resolution Display frequency Measurement Mode PWM Blinking One power supply: 25V/7A Power Supply Setting accuracy 1µV ±(0,05% FS) 0,01mA ±(0,2% FS) Weight: 240Kg Multicells System Signaling Size Height: 1.90m Width: 1.75m Length: 2.70m Power requirements RAM: 2Go Software: ALPES, Pack Office

Multicells System for Lighting Multicells headlight reduced photometric systems allow measurement and qualification of headlight products according to different standards (SAE, ECE, Japan) on short distance through lens. Thanks to this device, useful for Research and Development as well as for the automotive lighting industry, our customers can test and certify many different products. As an option you can choose to add cells, to enclose the system…etc. Multicells systems for lighting have many assets : Stand alone system. Compact. High maximum load (25kg/55pounds). Large measurement range:...

Multicells system for lighting characteristics: Measurement cells Photometric range Photometric resolution Display frequency Measurement Mode Continuous PWM Two power supplies: 18V/20A Power Supply Multicells System Lighting Size Height: 1.85m Width: 1.74m Length: 2.70m Power requirements 230V/50Hz/16A Processor: DualCore 2.7 GHz RAM: 2Go Software: ALPES, Pack Office

Multicells Systems & options Pleiades Instruments has designed different kinds of Multicells systems to fit the specific needs of our clients. The designation of our devices is the following: Multicells Systems MES_S MES_R Retrometer system You will find below options and spare parts that can be added to our system : Cells package MES_OCP Power supply MES_OPS Lens MES_OSL Motorized stage MES_OVS/MES_ORS Wires MES_OAW Reference Lamp MES_ORL Upon request • Package with DAQcard , CECAcard, 32 addional cells, specific wires... • Agilent power supply • TTI power supply (only for lighting) •...

Options Power supplies MES_OPS Power supplies are used to adjust the current/voltage going through products. TTI power supply is used for lighting equipments (18V-20A, accuracy of measurement: 0,01%) whereas Agilent power supply is used for signaling systems (25V-7A, accuracy of measurement: 0,05%). Cells package MES_OCP Cells can be added on the panel to improve measurement accuracy. The cells package contains 32 cells, wires, a CECA card and a DAQ card. Lens MES_OSL Lenses are used to reduce the distance between products and detectors. Spare lens especially designed for multicells systems...

Software: ALPES. Our system is delivered with our fully applicative software called ALPES (Automotive Lighting Photometric Equipment Software). ALPES is an application used for controlling and running the photometric systems manufactured by Pleiades Instruments. It offers a user friendly and simplified user interface for operators in production mode, or a fully customizable software for administrators and Research & Development users. ALPES is used for all the systems sold by Pleiades Instruments: goniophotometer and multi-cells, and for different products: signaling and lighting. This...