ISO-6742-2-1985.pdf
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1、International Standard f 674212 0 a 4 4#i!b INTERNATIONAL ORGANIZATION FOR STANOARDIZATIONME)YHAlO#lAR OPrAHH3ALWl fl0 CTAHAAPTC13Al. reflector : An assembly ready for use and comprising one or more retro-reflecting optical units. 3.2 wide angle reflector : Device providing retro-reflection through
2、horizontal entrance angles of not less than 56O on either side of the reference axis. 3.3 conventional reflector : Device providing retro- reflection through horizontal entrance angles of not less than 20 on either side of the reference axis. 1 Copyright International Organization for Standardizatio
3、n Provided by IHS under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 10:48:25 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 6742/2-1985 (El 4 Symbols and units used (see figure 11 Figure 1 - Explanatory diagram of symbols used NOT
4、E - The following symbols are in accordance with regulation No. 3 of the UNIECE concerning retro-reflecting devices.1) A : area of the effective reflex surface of the retro-reflecting device, in square centimetres. C : reference centre. NC : reference axis. R, : receiver, observer or measuring devic
5、e. CR : centre of receiver. $n : diameter of receiver R, if circular, in centimetres. S, : sotirce of illumination. Cs : centre of source of illumination. 3s : diameter of source of illumination, in centimetres. D, : distance from centre C, to centre C, in metres. 0; : distance from centre C, to cen
6、tre C, in metres. NOTE - De and 0; are generally very nearly the same and under normal conditions of observation it may be assumed that 4 = 0:. Furthermore, the effective distances may be used when a collimated system is used in order to obtain an artificially in- creased measuring distance. D : mea
7、n diameter of retro-reflective annulus on retro-reflective tyres, in millimetres, a : observation angle. /3 : entrance angle. With respect to the line C,C which is always considered to be horizontal, this angle is prefixed with signs -(left), +(right), +(up) or -(down), according to the posi- tion o
8、f the source S, in relation to the axis NC, as seen when looking towards the retro-reflecting device. For any direction defined by two angles, vertical and horizontal, the vertical angle is always given first. y : angular subtense of the measuring device R, as seen from point C. 6 : angular subtense
9、 of the source S, as seen from point C. E : rotation angle. This angle is positive when the rotation is clockwise as seen when looking towards the illuminated sur- face, If the reflecting device is marked TOP, the position thus indicated is taken as the origin. NOTE - All angles are expressed in deg
10、rees and minutes, E : illuminance of the retro-reflecting device, in lux. CIL : coefficient of luminous intensity, in millicandelas per lux. I) Document EIECE 324 - ElECElTRANW505 - Addendum Z/Revision 1, Regulation No. 3 : Uniform provisions concerning the approval of reflex reflecting devices for
11、power-driven vehicles and their trailers. 2 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 10:48:25 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 6742/2-
12、1965 (EI 5 Photometric requirements 5.1 Reflectors Table 2 applies to pedal reflectors. be 5/8 x clear values. Values for red reflectors shall be l/4 x clear values. When tested by the method given in clause 8, the CIL values for reflectors shall not be less than those specified in table 1 or 2. Tab
13、le 1 applies to front, side and rear reflectors. Values given are for clear (white) reflectors. Values for yellow reflectors shall 5.2 Retro-reflective tyres When tested by the method given in clause 9, the CIL values for a retro-reflective tyre shall be not less than those specified in table 3. In
14、the case where D is less than 420 mm the minimum photometric value for each observation and entrance angle shall be equal to the value for D = 420 mm. Table 1 - Coefficients of luminous intensity, CIL, for clear reflectors Entrance angle, /3” Observation angle, a0 Vertical : 0 f IO 0 0 0 Horizontal
15、: 0 0 f 29, +30 +40 f60 Either 00 12 2500 1650 850 750 650 560 oo”;o 1800 1200 610 540 470 400 1030 26 18 11 11 11 11 NOTE - Values for entrance angles of f 30, IL 40 and + 50 are not applicable to convo 1030 Entrance angle, 8” -40 1 200 1 400 ( 500 I,21 D I,06 D 0,70 D 0,21 D 0,91 D 0,80 D 0,53 D 0
16、.16 D 0.121 D 0.106 D 0.070 D 0.021 D 3 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 10:48:25 MDTNo reproduction or networking permitted without license from IHS -,-,- 6 Calorimetric
17、requirements defined by the CIE chromaticity coordinates specified in table 4. When determined by the method given in clause IO, the colour NOTE - For ease of reference these areas are shown graphically in of the reflected light shall be located within the appropriate area figure 2. Table 4 - x-y ch
18、romaticity coordinates of the intersection points of colour boundary lines I Colour 1 Coordinates. I I Red I Y X 0,665 0,335 0,645 0,335 0,721 0,259 0,735 0,265 I Yellow X 0,660 0,546 0,612 0,618 Y 0,440 0,426 0,382 0,382 White X 0,285 0,453 0,500 0,600 0,440 0,285 Y 0,332 0,440 0,440 0,382 0,382 0,
19、264 White/yellowl) I x 0,380 0,609 0,618 0,440 0,380 Y 0,406 0,480 0,382 0,382 0,337 I) For retro-reflective tyres only. 0,250 ” ” ” ” ” ” ” ” ” ” ” ” 0,300 0,350 0,400 0,450 - 0,500 0,550 0,600 0,650 0,700 0,: 0,382 X Figure 2 - Boundaries of colour areas for reflective devices Copyright Internatio
20、nal Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 10:48:25 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 6742/2-1985 (E) 7 Physical requirements 7.1.2.5 Reflector mount alignme
21、nt test 7.1 Reflectors 7.1 .I Construction When tested by the following method, the optical axis of the reflector (excluding pedal reflectors or spoke-mounted reflec- tors) shall not deflect more than 15- during the test, and shall not exhibit a permanent displacement greater than 5” after the test.
22、 The reflector and/or mount shall incorporate a distinct pre- ferred assembly method to ensure that the reflector can be mounted in its designed orientation with regard to the bicycle. 7.1.2 Tests With the reflector and mount assembled to a rigid fixture duplicating the mating component or frame mem
23、ber for which it is designed and intended for use (including a rigidly mounted bicycle), apply a force of 90 N to the reflector unit in at least three directions setected as most likely to affect its alignment. 7.1.2.1 General 7.1.2.6 Resistance to corrosion After being tested by the method specifie
24、d in IS0 3768 the reflector shall not exhibit any visible signs of corrosion liable to affect the integrity of the mounting or housing. A reflector shall comply with the photometric and calorimetric reauirements of 5.1 and 6. and there shall be no loosenina of the mounting(s) or distortion of the ho
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