ChinaAutoRegs｜GB 11554-2008英文版/English/翻譯/機動車和掛車用後霧燈配光性能
Photometric Characteristics of Rear Fog Lamp for Power-Driven Vehicles and Their Trailers
1 SCOPE
This Standard specifies the specifications, test procedures and inspection rules of rear fog lamps for power-driven vehicles.
This Standard applies to various types of rear fog lamps intended for power-driven vehicles and their trailers of categories L3, L4, L5, L7, M, N and O. Rear fog lamp for power-driven vehicle is shorted as rear fog lamp in this standard.
L7 refers to four-wheel motorcycle.
2 NORMATIVE REFERENCES
The following Standards contain provisions which through reference in this text, constitute provisions of this Standard. For dated references, subsequent amendments (corrigenda excluded) to, or revisions of, any of these publications do not apply. However, parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the Standards indicated below. For undated references, the latest edition of the applicable Standards referred to apply.
GB 4599 Photometric characteristics of headlamps for motor vehicles
GB 4785 Prescription for installation of the external lighting and light-signaling devices for motor vehicles and their trailers
GB 15766.1 Lamps for road vehicles – Dimensional, electrical and luminous requirements (GB15766.1-2000, idt IEC 60809:1995)
ECE R37 Uniform provisions concerning the approval of filament lamps for use in approved lamp units on power-driven vehicles and of their trailers
3 術語和定義
GB 4785 確立的術語和定義適用於本標準。
4 要求
4.1 一般規定
4.1.1 後霧燈應設計和製造成在正常使用條件下，即使受到振動，仍能保證滿足使用要求和符合本標準的規定。
4.1.2 後霧燈中的光源模塊，應設計為即使在黑暗中也能將其安裝在正確的位置上；並且能夠防止誤操作。
4.1.3 當可變光強後霧燈的光強調節裝置失效時，應能自動滿足穩定光強後霧燈的配光性能要求。
4.1.4 如果使用燈絲燈泡，應符合GB 15766. 1 或ECE R37 規定。
4.2 配光性能
4.2.1 在下述規定的角度範圍內，後霧燈各方向上的發光強度應符合以下規定：
4.2.1.1 通過基準鈾線的水平H H 線和垂直V V 線上，在基準軸線左、右10。和上、下5。之間（見圖1），其發光強度最小限值為150 cd;
4.2.1.2 在圖1 配光屏幕中的菱形區域內，如果目視檢查發現發光強度有明顯的變化，則除檢查H-H 線和v-v 線上是否達到上述規定外，還應檢查該區域內其餘部分發光強度，最小限值為75 cd;
4.2.1.3 在可以看到燈的所有方向上，穩定光強後霧燈發光強度最大限值為300 cd ；可變光強後霧燈發光強度最大限值為840 cd ，但在夜晚工作時不超過300 cd 。
4.2.2 對於配備有一個以上光源的單燈，當其任何一個光驚失效時，仍應滿足發光強度最小限值要求。
當所有光掘點亮時，不應超過發光強度最大限值。
4.2.3 在基準軸線觀察方向上的視表面應不大於140 cm2。