Photometry

LightLab offers a comprehensive photometric testing service that is summarised in the table below. The variety of samples and breadth of testing is substantial, please contact us if your requirements our outside our mainstream testing services. Our technicians have many years of experience and will help you determine what course of action is necessary whatever your testing needs. Our ultimate goal is to supply you with succinct, accurate and meaningful information.

Your Photometric Results

Information we provide to you takes many forms. Traditional communication of results is in the form of printed test reports. We will supply NATA endorsed reports for those laboratory activities that are covered by our NATA accreditation. Regardless of whether the measurements are covered by our accreditation or not you can rest assured we will perform the test to the same exacting standards. Please refer to our laboratory quality document for further information.

For applicable test types (refer to the table below) we will provide photometric data files. We can generate photometric data in many formats recognized internationally and by all lighting design software:

• IES-LM63-1986 / 91 and 95
• CIE format as defined in Pub. 102:1993
• Eulumdat TM-14
• Phillum version 1.0 and 2.0

Additionally, we can provide the photometric data in a number of popular spreadsheet formats. If you require the files in a different format let us know and we will look into it. The charts that appear on our photometric test reports can be issued to you in electronic format for inclusion in your catalogues.

All of our printed test reports can be supplied in an industry standard electronic format. You gain the ease of use of electronic reports, in distribution, publishing and archiving while retaining the security of unambiguous traceability. For more information about our electronic publishing services please contact us.

Photometric data is the raw currency of lighting design. We can put your photometric data to work. With many decades of experience in lighting design and the application of lighting in architecture our designers can create pleasing designs whatever your requirements.

Services

The laboratory operates two photometers, a rotating mirror goniophotometer with an optical path length of 8 metres and an A type goniophotometer with a variable optical path length of 3 metres to 25 metres. The laboratory also operates an 800mm diameter integrating sphere. The equipment is backed by an array of electrical, thermal and colorimetric measurement equipment.

Our standard photometric service is the photometry of luminaires, be they interior luminaires, floodlights, streetlanterns or other light sources. Specialty luminaires such as emergency EXIT signs require additional measurements.

Commercial Lighting*

Major Categories:

Interior lighting*, Street lighting*, Floodlighting*, Light sources*

Luminaire Types:

office fluorescent, downlight, street lantern, floodlight, bollard, bare lamps

Test Method:

Tests are performed on the laboratory mirror goniophotometer for most samples.

Results:

The results consist of a printed report containing information pertinent to the luminaire tested. For interior luminaires, LOR, SHR, utilisation factor, luminance, I-table and a polar curve diagram are standard. For floodlights, the report contains beam parameters, LOR, isocandela diagram, major axis chart. Streetlantern report contains CIE control parameters, LOR in the four quadrants, isolux diagram, I-table. It is possible to include any and all information in a report for any luminaire upon request.

In addition, testing can be performed against the requirements of CIBSE LG3 and the results reported in terms of the appropriate CIBSE category. We can advise changes to your luminaire design to improve the classification.

Reports are electronically published and the charts and diagrams can be published separately. Photometric data files in any of the formats supported by the laboratory will be issued.

Automotive Lighting

Major Categories:

Signal lamp, headlamp, reflex reflector

Sample Types:

turn indicator, headlamp, stop lamp, tail lamp, position marker, reverse lamp, registration plate lamp, reflex reflector

Applicable Standards:

ADR (Australian Design Rule), ECE, JIS, SAE

Test Method:

All samples are tested on the laboratory A type goniometer.

Results:

The report that is issued states the standard against which it is tested, the requirements of the standard, the measured results and a summary indicating a pass/fail summary for each requirement. For R&D purposes additional information including an isocandela diagram can be issued.

Reports are electronically published.

Emergency Lighting*

Major Categories:

Emergency luminaire*, Emergency EXIT sign*

Applicable Standards:

AS2293

Test Method:

All samples are photometrically tested on the laboratory mirror goniophotometer for emergency classification categories. EXIT signs are tested for luminance, format and colour conformity to the standard. A thermal test is required prior to the classification and luminance tests to determine the emergency test voltage.

Results:

The photometric test is a standard photometric test report with the addition of the emergency classification information. Emergency EXIT luminaires require an additional report that states the luminance values and CIE x,y coordinates measured, and indicates a pass/fail for luminance, colour and format.

Reports are electronically published.

Other Luminaires

Major Categories:

Traffic signal lantern, Aviation lighting, Marine lighting, Railway signalling

Applicable Standards:

AS2144 (Traffic signal lanterns) the other signal lanterns are covered by a number of different standards.

Test Method:

All samples are tested on the laboratory A type goniometer.

Results:

Each category and sample type has a defined test report format containing a summary of the test measurements and a pass/fail summary if required by the standard.

Reports are electronically published applicable charts and diagrams such as isocandela and isolux diagrams can be published separately.

Light Sources*

Major Categories:

Luminous flux standard lamp*, Luminous intensity standard lamp*

Test Method:

Tests for flux are conducted on the laboratory mirror goniophotometer, tests for luminous intensity are conducted on the optical rail.

Results:

The report will state the applicable test quantity. Reports are electronically published