NBN EN 61947-1 : 2003

INTRODUCTION
1 Scope
2 Normative references
3 Definitions
4 General requirements
5 Light output measurement and specification
   5.1 Light output specifications
   5.2 Light output uniformity
   5.3 Contrast ratio
   5.4 Light transmission for fixed resolution projection
       systems: liquid-crystal imaging devices (LCD)
       used with an overhead projector (OHP)
   5.5 Small area contrast ratio for alternating black
       and white pixel lines
6 Fixed resolution projector characteristics
   6.1 Displayable format (IEC resolution)
   6.2 Aspect ratio
   6.3 Viewing angle (half/gain) specification for
       devices with an integral screen
   6.4 Input signal format compatibility
   6.5 Response time
   6.6 Colour measurements
   6.7 Number of colours
   6.8 Keystone correction
7 Range of focus and image size
8 Audio characteristics
9 Light source specification
10 Maximum acoustical noise level
11 Power consumption
12 Weight
13 Dimensions
14 Sync hierarchy - Recommended practice
Annex A (normative) Figures
Annex B (normative) Pattern generator specifications
Annex C (informative) Considerations in formulating this
        standard
Annex D (normative) Complete sample specification
Annex E (informative) Conversion equations
Annex F (informative) Possible causes of photometric
        measurement errors
Annex G (informative) Photometer precision and veiling
        glare
Annex H (informative) Light measuring devices
Annex I (informative) Figure of merit for projection
        display colour gamut
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography