LED and SSL;

Photometry and Colorimetry Course  

Theory and practice

Optional Practical session 19^th 9.00 am to 12.00 pm

A comprehensive course presenting the challenges of measuring and light and colour. For those designing LED luminaires and other light sources. This course covers concepts such as measurement of total light output, examines accuracy, total light output as a function of angle, measurement of LED colour and colour rendering. The course also deals with goniophotometry, spectroradiometer and compilation of LDT and IES files.

Enquire 0121 260 6020 or 0121 260 6150 – please check booking conditions below

• Basic concepts of light and the human visual system
• Optical properties of materials
• Photometry and colorimetry
• Spectroradiometry, goniophotometry
• Choosing the right equipment
• The measurement challenges of LEDs and SSL
• Optional: Practical session 19 November  09:00 - 12:00 

For further information and the agenda see below

Agenda

8:30. Registration and coffee.

9:30 Session 1

Basic Concepts - Light & the Human Visual System
      Light and the electromagnetic spectrum
      Photopic response
      Mesopic & scotopic vision

Basic Concepts - the Optical Properties of Materials
       Diffuse reflectance & transmittance
       Lambert's cosine law
       Specular reflectance & transmittance
       BRDF and scatterometry

 Photometry
      Luminous flux
      Illuminance
      Luminous intensity
      Luminance
      The inverse squared & cosine rules
      Photometric field - near-field versus far-field
      Converting between units

10:30 Coffee and Networking.

11:00 Session 2.

Colorimetry
      Colour vision and tristimulus theory
      CIE colour spaces
      Chromaticity
      Colour temperature
      Standard illuminants
      Dominant wavelength
      Colour differences

Spectroradiometry
      Spectral power distributions
      Computation of photometric & colorimetric quantities
      Colour rendering

12:30 Lunch

13:15 Session 3

Goniophotometry
      Coordinate systems
      Near-field goniophotometry
      Far-field goniophotometry
      Standard photometric data

Choosing Light Measurement Equipment
      Photometers
      Colorimeters
      Spectroradiometers
      Goniophotometers
      Spectrophotometers
      Scatterometers

14:45 Coffee

15:15 Session 4.

LEDs & Solid State Lighting - the Measurement Challenges
     LED binning & the effect on intensity & colour
     LED phosphors & the effect on colour
     Standards - CIE 127
     Standards - IESNA LM 79 & 80
     Spectral considerations
     Geometric considerations
     Electrical considerations
     Thermal considerations
     Special considerations when choosing equipment for testing LEDs

16:30 Lab tour and close

Day 2  (19 November) Practical session

08:30   Registration and coffee

09:30   How to make a photometric measurement

Dr Gareth John shows the delegates how to carry out photometric, goniophotometric, spectroradiometric, colorimetric and thermographic measurements on an LED luminaire. This session will cover measurements of total luminous flux, luminous intensity, illuminance, correlated colour temperature, colour rendering index, temperature and the importance of the colour correction factor.

12:00   Close