SPECTRO-GONIOPHOTOMETER ACCURATE LIGHT

DISTRIBUTION MEASUREMENT

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EF: 7326V

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IntroductionThe goniophotometer offers complete photometric characterisation of LED lampheads.

A valuable tool that accelerates time to market and provides a luminaire designer with the tools, confidence and knowledge to accurately measure the performance of their design.

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Phase 1 : Adaption to LEDOver the past decades, lighting manufacturers globally have developed a variety of luminaire solutions utilising tungsten and fluorescent technologies.

The “adaption phase” as we call it is the adaptation of existing luminaires from traditional light sources to LED technology.

Typically manufacturers own a vast array of castings, mouldings and extrusions along with an assortment of lens and optic solutions for use across their luminaire range.

In the era of lighting class LED’s, the OEM luminaire manufacturers wish to extend the life of these tools by adapting them for use with LED and improve the ROI.

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Phase 2 : LED by designThe LED offers a total fresh approach to luminaire design and “Phase 2” is going back to basics and designing new portfolios of luminaires without compromise around the features and benefits that LED can offer.

Using LED’s gives the designer the opportunity for a truly fresh approach to luminaire design and this brings its own unique set of challenges.

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ACCURACY

The goniophotometer motor stages can achieve an accuracy to within 0.1 degrees on each measurement axis. The measure step resolution defaults to 15 degrees on the C plane and 5 degrees on the Y plane.

FLEXIBILITY

The equipment can be adjusted to accommodate a wide range of lamphead sizes. Setup is simple using manually adjustable linear control stages.

SPEED

Compliant measurement completed in under 50 minutes with test results that are available immediately.

Photometric testing

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AUTOMATION

Specify the scan resolution and exposure time for the photo sensor and click start. Simple

COST

An external test laboratory can charge up to 800€ per test. Having your own test equipment allows testing whenever required at no cost.

SOFTWARE

Every Mackwell Spectrogoniophotometer system is supplied with tailored software, developed by mackwells in house software engineers. With an intuitive to use GUI the software can be used by end user with a minimal need for training.

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Mackwell SGP FlexThe Mackwell SGP Flex is the next generation of goniophotometer from Mackwell. With a unique design that utilises a cantilever concept to give maximum flexibility from the smallest package size for luminaires up to 600mm x 600 in size.

• As the product size grows the equipment can be extended to meet the dimensional requirements of the luminaire.

• Supplied with latest Mackwell control software.

Mackwell SGP MiniThe SGP Mini is a motorised goniophotometer that performs luminous intensity analysis of LEDs.

THE SGP MINI INCLUDES:

• Chamber with special matt black non reflective interior finish.

• Spectral irradiance receiver connected via fibre optic to a spectrometer.

• Motor control hardware is provided in the kit.

• Information is reported via a USB cable

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Motor 1: Y Angle

• Live feedback to user of current motor position

• Manual control of motor stage – Use for single measurements points.

• “Home” position indicator – Microswitch activated. Scan routine cannot start unless motors are at 0° positions – ensures accuracy.

• “Limit” indicator – Microswitch activated. Also acts as software kill switch to prevent motor burn out in the unlikely event of a malfunction.

Motor 2: C Plane

• Features as Motor 1, but without Home & Limit switches.

• Use manual control in conjunction with motor 1 for single measurement points.

Automated Scan Routine

• Programmable step sizes to adjust resolution or accuracy of output EULUMDAT file. Default 15°/5° step sizes required as a minimum by EN 13032-1:2004, but can be adjusted to suit user needs.

• Start test – Use after setting exposure manually or automatically from Spectroradiometer software. Initiates scan routine of measuring every elevation degree step at 0° azimuth, then returns to 0° elevation, moves azimuth by X degrees, and repeats elevation degree step measurements.

• Scan can be paused and resumed at any time, or aborted completely.

Routine/Program Status Feedback

• Displays individual measurement results when used with “Measure”.

• During auto scan routine displays latest scan results for each angle.

• If manual exposure settings used, reports previous and current exposure settings.

• Scan count – performed and total. Allows calculation of estimated time remaining before scan completion.

• Progress bar for easy check of scan progress.

GP equipment Operation

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Technical SpecificationMains Input: 230 volt ± 10% ~ 50/60 Hz (other voltages

and frequencies available)

Angle range: +/- 90° Elevation (Gamma), 360° Azimuth (‘C’ plane)

Angle accuracy: 0.1° for each axis

Rotation step size User selectable, minimum 1° for each axis

X, Y, & Z offset adjustment Independently adjustable by +/- 50mm for each axis

Max Test sample size 250mm diameter and 150mm deep (with central optical output)

Max Test sample weight 1kg

Accuracy of luminous intensity

CIE Class 1

Dimensions: Enclosure 600mm x 600mm x 620mm (W x H x D)

Ordering codes: Please contact Mackwell for ordering information

tel. +44 (0) 1922 458 255 email. sales@mackwell.com www.mackwell.comVigo Place, Aldridge, West Midlands, WS9 8UG, England

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