Expression of results. Subtract the initial haze from the final haze for every measurement point, the difference representing the so-called delta haze. Calculate out of these values for the individual measurement points the average delta haze (including standard deviation) resulting from abrasion action of aqueous dirt wiped for 20,000 cycles on the sample surface by a to be reported wiper blade type." Annex 3, re-number the subsequent figures accordingly.
Expression of results. Determine whether, When target (a) (see Figure 11(a)) is used, the primary and secondary images of the circle separate, i.e. whether the limit value of n is exceeded, or When target (b) (see Figure 11(b)) is used, the secondary image of the spot shifts beyond the point of tangency with the inside edge of the circle, i.e. whether the limit value of n is exceeded. Figure 11 Dimensions of targets Slot width 2 mm a) D D b) 12 mm centre spot Figure 12 Arrangement of apparatus Safety glazing Target Observation location Rake angle Observation distance ( X > 7 m) Suitable light source Figure 13 Apparatus for collimation-telescope test Collimation telescope Observation telescope Ray of light Rake angle Safety glazing Image plane
Expression of results. Determine whether, When target (a) (see Figure 22(a)) is used, the primary and secondary images of the circle separate, i.e. whether the limit value of n is exceeded, or When target (b) (see Figure 22(b)) is used, the secondary image of the spot shifts beyond the point of tangency with the inside edge of the circle, i.e. whether the limit value of n is exceeded. 91 Figure 22 Dimensions of targets Slot width 2 mm a) D D b) 12 mm centre spot n nt O ly Figure 23 Arrangement of apparatus mme Safety glazing Target Observation location Rake angle Observation distance ( X > 7 m) Suitable light source PublicCo Figure 24 Apparatus for collimation-telescope test Collimation telescope Observation telescope Ray of light r Rake angle Safety glazing Fo Image plane
Expression of results. For Public Comment Only The windscreen shall first be examined by a simple scanning technique to establish the area giving the strongest secondary image. That area shall then be examined by the collimation-telescope system at the appropriate angle of incidence. The maximum secondary-image separation shall be measured.
Expression of results. Determine whether, When target (a) (see Figure 22(a)) is used, the primary and secondary images of the circle separate, i.e. whether the limit value of n is exceeded, or When target (b) (see Figure 22(b)) is used, the secondary image of the spot shifts beyond the point of tangency with the inside edge of the circle, i.e. whether the limit value of n is exceeded. Figure 22 Dimensions of targets Figure 23 Arrangement of apparatus Figure 24 Apparatus for collimation-telescope test
