CIE - International Commission on Illumination The role of CIE and the U.S. National Committee in establishing standards for measurement and characterization of Solid State Lighting equipment and products

1. PRESENTATION ON CIE
Prepared By
MD. MEHEDI HASAN
RIMAN
ID : 12132107012
SEC : 01
INTAKE : 08th
BUBT-Bangladesh
University of Business &
Technology.

3. INTRODUCTION
• CIE -
• International Commission on Illumination
• The role of CIE and the U.S. National Committee in
establishing standards for measurement and
characterization of Solid State Lighting equipment and
products

4. INTRODUCTION
• The International Commission on
Illumination - also known as the CIE from
its French title, the Commission
Internationale de l´Eclairage - is devoted
to worldwide cooperation and the
exchange of information on all matters
relating to the science and art of light
and lighting, colour and vision,
photobiology and image technology.

5. • With strong technical, scientific and cultural
foundations, the CIE is an independent, non-
profit organization that serves member
countries on a voluntary basis. Since its
inception in 1913, the CIE has become a
professional organization and has been
accepted as representing the best authority on
the subject and as such is recognized by ISO as
an international standardization body.

6. Organization
• The CIE has eight divisions, each of which establishes
technical committees to carry out its program under the
supervision of the division's director:
1.Vision and Colour
2.Measurement of Light and Radiation
3.Interior Environment and Lighting Design
4.Lighting and Signalling for Transport

7. 5. Exterior Lighting and Other Applications
6. Photobiology and Photochemistry
7. General Aspects of Lighting (Inactive)
8. Image Technology

8. Objectives of the CIE
• Provide an international forum for the discussion of all
matters relating to the science, technology and art in the
field of light and lighting.
• Develop basic standards for measurement and
application design.
• Publish standards and reports and maintain liaison and
technical interaction with other international standards
organizations

9. International Standards Body
•Recognized by International Bureau of Weights and
Measures (BIPM) as the organization responsible for
establishment of the candela.
•Accepted by ISO and IEC as an International Standards
Body
•Agreement on technical co-operation with CEN
•CIE Standards and Recommendations are bases for many
IES and ASTM specifications

10. CIE Structure

11. CIE Divisions
•Div.1: Vision and colour
•Div.2: Physical measurement of light and radiation
•Div.3: Interior environment and lighting design
•Div.4: Lighting and signalling for transport
•Div.5: Exterior and other lighting applications
•Div.6: Photobiology and photochemistry
•Div.8: Image Technology

12. CIE Standards
•CIE S 004: Colours of light signals (2001)
•CIE S 009: Photobiological safety of lamps and lamp
systems (2002)
•CIE S 013: International standard global solar UV
index(2003)
•CIE S 014-1: Colorimetry –Part 1: CIE standard
colorimetric observers (2006)
•CIE S 014-2: Colorimetry –Part 2: CIE standard illuminants
(2006)
CIE Standards

13. CIE Standards
• •CIE S 015: Lighting of outdoor work places (2005)
• •CIE S 016: Lighting of outdoor work places –lighting
requirements for safety and security (2005)
• •CIE 17.4-1986: International Lighting Vocabulary
• •CIE S 019: Photocarcinogenesis action spectrum (non-
melanoma skin cancers) (2006)
• •CIE S 020: Emergency lighting (2007)

14. Milestones
In 1924 it established the standard photopic observer
defined by the spectral luminous efficiency function V(λ),
followed in 1951 by the standard scotopic observer defined
by the function V’(λ).
Building on the Optical Society of America's report on
colorimetry in 1922,[1] the CIE convened its eighth session
in 1931, with the intention of establishing an international
agreement on colorimetric specifications and updating the
OSA's 1922 recommendations based on the developments
during the past decade.[2] The meeting, held in Cambridge,
United Kingdom, concluded with the formalization of the
CIE 1931 XYZ colour space and definitions of the 1931 CIE
2° standard observer with the corresponding colour
matching functions, and standard illuminants A, B, and C.

15. Milestones
• In 1964 the 10° CIE standard observer and its
corresponding colour matching functions as well as the
new standard daylight illuminant D6500 were added, as
well as a method for calculating daylight illuminants at
correlated colour temperatures other than 6500 kelvin.
• In 1976, the commission developed the CIELAB and
CIELUV colour spaces, which are widely used today.
• Based on CIELAB, colour difference formulas CIEDE94
and CIEDE2000 were recommended in the corresponding
years.