IEC 62906-5-6:2020 (E) specifies the standard measurement conditions and measuring methods for determining the optical performance of a projection screen in terms of its photometric characteristics, including screen gain and speckle contrast, from different viewing directions. These methods are only applied for the case in which the projection screen and a laser projector are integrated and used with a fixed configuration as a set to create a real image. Both front and rear projection screens, with a flat surface, are included. This document excludes projection screens which are classified as optically see-through screens, including head-up displays.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 4<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 1 Scope 2 Normative references 3 Terms, definitions, and abbreviated terms 3.1 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 3.2 Abbreviated terms 4 Standard measuring conditions 4.1 General 4.2 Environmental conditions 4.3 Power supply 4.4 Warm-up time <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 4.5 Measurement coordinate system 4.6 Darkroom conditions 4.7 Measuring facilities Figures Figure 1 \u2013 Coordinate system for projection direction and viewing direction <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 5 Installation and adjustment of the DUT 5.1 Placement of the projector and the screen 5.2 Focusing of the projector <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 5.3 Standard projector setup conditions 5.4 Standard image measurement locations Figure 2 \u2013 Example of image pattern with horizontal size H and vertical size V used for alignment <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 6 Signal patterns Figure 3 \u2013 Standard measurement locations on the screen (nine measurement points) Figure 4 \u2013 Example of DUT setup Figure 5 \u2013 Full screen patterns <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 7 Measuring methods 7.1 Screen gain 7.1.1 Purpose 7.1.2 Measuring equipment and conditions <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 7.1.3 Measuring methods 7.2 Screen gain directivity and half-gain angle 7.2.1 Purpose Figure 6 \u2013 Measuring geometry of screen gain <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 7.2.2 Measuring conditions 7.2.3 Measuring methods 7.3 Screen gain uniformity 7.3.1 Purpose Figure 7 \u2013 Viewing direction measurement in both horizontal and vertical directions <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 7.3.2 Measuring conditions 7.3.3 Measuring methods 7.4 Angular characteristics of speckle contrast 7.4.1 Purpose 7.4.2 Measuring conditions <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 7.4.3 Measuring methods Figure 8 \u2013 Measuring geometry of speckle contrast with changing viewing direction <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Annex A (informative)Screen colour shift A.1 Purpose A.2 Measuring conditions A.3 Measuring methods <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Annex B (informative)Screen directivity using a Fresnel lens Figure B.1 \u2013 Directivity of the screen under different setups <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Annex C (informative)Angular characteristics of speckle contrast with different screens Figure C.1 \u2013 Optical configuration for speckle contrast measurementwith different viewing directions Figure C.2 \u2013 Angular characteristics of speckle contrast obtainedfrom different screen and different de-speckle conditions <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Laser displays – Measuring methods for optical performance of projection screens<\/b><\/p>\n |