Common use of Colour Clause in Contracts

Colour. The colour of the light source shall be measured in an integrating sphere using a measuring system which shows the CIE chromaticity co-ordinates of the received light with a resolution of  0.002." Annex 5, amend to read: "Annex 5 Optical setup for the measurement of the position and form of the arc and of the position of the electrodes1 The gas-discharge light source shall be positioned as shown in the main drawing of the respective category. An optical system shall project a real image A' of the arc A with a magnification of preferably M = s'/s = 20 on a screen. The optical system shall be aplanatic and achromatic. In the focus-length f of the optical system a diaphragm d shall cause a projection of the arc with nearly parallel observation directions. To get the angle of the half divergence not larger than  = 0.5°, the diameter of the focus-diaphragm with respect to the focus-length of the optical system shall be not more than d = 2f tan(). The active diameter of the optical system shall be not more than: D = (1 + 1/M)d + c + (b1 + b2)/2. (c, b1 and b2 are given in the sheets prescribing the position of the electrodes). A scale on the screen shall enable to measure the position of the electrodes. The calibration of the arrangement advantageously can be done by using a separate projector with a parallel beam in connection with a gauge whose shadow is projected to the screen. The gauge shall show the reference axis and the plane parallel to the reference plane and at distance "e" mm from it. In the plane of the screen a receiver has to be mounted movable in a vertical direction on a line corresponding to the plane at "e" from the reference plane of the gas discharge light source. The receiver shall have the relative spectral sensitivity of the human eye. The size of the receiver shall be not more than 0.2 M mm in the horizontal and not more than 0.025 M mm in the vertical direction (M = the magnification). The range of measurable movement shall be such that the required measures of the arc bending r and arc diffusion s can be measured. For the measurement of the stray light, the size of the receiver shall be circular with a diameter of 0.2M mm diameter." Annex 7, Table 1, row "Lamp voltage and wattage", amend to read:

Colour. The colour of the light source shall be measured in an integrating sphere using a measuring system which shows the CIE chromaticity co-co- ordinates of the received light with a resolution of  ± 0.002." Annex 5. The following figure shows the colour tolerance area for colour white and the restricted tolerance area for the gas-discharge light sources D1S, amend to read: "D2S, D1R and D2R. Annex 5 Optical setup for the measurement of the position and form of the arc and of the position of the electrodes1 OPTICAL SETUP FOR THE MEASUREMENT OF THE POSITION AND FORM OF THE ARC AND OF THE POSITION OF THE ELECTRODES 1/ The gas-discharge light source shall be positioned as shown in the main drawing of the respective categoryfigure 1 on sheet D1S/D2S/1 respectively sheet D1R/D2R/1. An optical system shall project a real image A' of the arc A with a magnification of preferably M = s'/s = 20 on a screen. The optical system shall be aplanatic and achromatic. In the focus-length f of the optical system a diaphragm d shall cause a projection of the arc with nearly parallel observation directions. To get the angle of the half divergence not larger than  μ = 0.5°, the diameter of the focus-diaphragm with respect to the focus-focus- length of the optical system shall be not more than d = 2f tan(tan(μ). The active diameter of the optical system shall be not more than: D = (1 + 1/M)d + c + (b1 + b2)/2. (c, b1 and b2 are given in the sheets prescribing the position of the electrodeson sheet D1S/D2S/4, respectively sheet D1R/D2R/4). A scale on the screen shall enable to measure the position of the electrodes. The calibration of the arrangement advantageously can be done by using a separate projector with a parallel beam in connection with a gauge whose shadow is projected to the screen. The gauge shall show the reference axis and the plane parallel to the reference plane and at distance "e" mm from itit (e = 27.1 for D1S, D1R, D2S and D2R). In the plane of the screen a receiver has to be mounted movable in a vertical direction on a line corresponding to the plane at "e" from the reference plane of the gas discharge light source. The receiver shall have the relative spectral sensitivity of the human eye. The size of the receiver shall be not more than 0.2 M mm in the horizontal and not more than 0.025 M mm in the vertical direction direction. (M = the magnification). ) The range of measurable movement shall be such that the required measures of the arc bending r and arc diffusion s can be measured. For the measurement of the stray light, the size of the receiver shall be circular with a diameter of 0.2M mm diameter." Annex 7, Table 1, row "Lamp voltage and wattage", amend to read:

Colour. The colour of the light source shall be measured in an integrating sphere using a measuring system which shows the CIE chromaticity co-ordinates of the received light with a resolution of  0.002." Annex 5, amend to read: "Annex 5 Optical setup for the measurement of the position and form of the arc and of the position of the electrodes1 The gas-discharge light source shall be positioned as shown in the main drawing of the respective category. An optical system shall project a real image A' of the arc A with a magnification of preferably M = s'/s = 20 on a screen. The optical system shall be aplanatic and achromatic. In the focus-focus- length f of the optical system a diaphragm d shall cause a projection of the arc with nearly parallel observation directions. To get the angle of the half divergence not larger than  = 0.5°, the diameter of the focus-diaphragm with respect to the focus-length of the optical system shall be not more than d = 2f tan(). The active diameter of the optical system shall be not more than: D = (1 + 1/M)d + c + (b1 + b2)/2. (c, b1 and b2 are given in the sheets prescribing the position of the electrodes). A scale on the screen shall enable to measure the position of the electrodes. The calibration of the arrangement advantageously can be done by using a separate projector with a parallel beam in connection with a gauge whose shadow is projected to the screen. The gauge shall show the reference axis and the plane parallel to the reference plane and at distance "e" mm from it. In the plane of the screen a receiver has to be mounted movable in a vertical direction on a line corresponding to the plane at "e" from the reference plane of the gas discharge light source. The receiver shall have the relative spectral sensitivity of the human eye. The size of the receiver shall be not more than 0.2 M mm in the horizontal and not more than 0.025 M mm in the vertical direction (M = the magnification). The range of measurable movement shall be such that the required measures of the arc bending r and arc diffusion s can be measured. 1 This method is an example of a measurement method; any method with equivalent measurement accuracy may be used. For the measurement of the stray light, the size of the receiver shall be circular with a diameter of 0.2M mm diameter." Annex 7, Table 1, row "Lamp voltage and wattage", amend to read:

Colour. The colour of the light source shall be measured in an integrating sphere using a measuring system which shows the CIE chromaticity co-co- ordinates of the received light with a resolution of  ± 0.002." Annex 5. The following figure shows the colour tolerance area for colour white and the restricted tolerance area for the gas-discharge light sources D1S, amend to read: "D2S, D1R and D2R. Annex 5 Optical setup for the measurement of the position and form of the arc and of the position of the electrodes1 OPTICAL SETUP FOR THE MEASUREMENT OF THE POSITION AND FORM OF THE ARC AND OF THE POSITION OF THE ELECTRODES 1/ The gas-discharge light source shall be positioned as shown in the main drawing of the respective categoryfigure 1 on sheet D1S/D2S/1 respectively sheet D1R/D2R/1. An optical system shall project a real image A' of the arc A with a magnification of preferably M = s'/s = 20 on a screen. The optical system shall be aplanatic and achromatic. In the focus-length f of the optical system a diaphragm d shall cause a projection of the arc with nearly parallel observation directions. To get the angle of the half divergence not larger than  µ = 0.5°, the diameter of the focus-diaphragm with respect to the focus-focus- length of the optical system shall be not more than d = 2f tan(tan(µ). The active diameter of the optical system shall be not more than: D = (1 + 1/M)d + c + (b1 + b2)/2. (c, b1 and b2 are given in the sheets prescribing the position of the electrodeson sheet D1S/D2S/4, respectively sheet D1R/D2R/4). A scale on the screen shall enable to measure the position of the electrodes. The calibration of the arrangement advantageously can be done by using a separate projector with a parallel beam in connection with a gauge whose shadow is projected to the screen. The gauge shall show the reference axis and the plane parallel to the reference plane and at distance "e" mm from itit (e = 27.1 for D1S, D1R, D2S and D2R). In the plane of the screen a receiver has to be mounted movable in a vertical direction on a line corresponding to the plane at "e" from the reference plane of the gas discharge light source. The receiver shall have the relative spectral sensitivity of the human eye. The size of the receiver shall be not more than 0.2 M mm in the horizontal and not more than 0.025 M mm in the vertical direction direction. (M = the magnification). ) The range of measurable movement shall be such that the required measures of the arc bending r and arc diffusion s can be measured. For the measurement of the stray light, the size of the receiver shall be circular with a diameter of 0.2M mm diameter." Annex 7, Table 1, row "Lamp voltage and wattage", amend to read: