1
92nRe a rvie w m irro r w ith a u to m a tic d im m e r
Ra in s e n s o r*
The s e m is olid re a c ts c he m ic a lly to th is
e le c tric a l c urre nt, th us p ro vid ing in fi-
nite ly-va ria b le d im m ing o f th e m irro r
(e le c tro c hro m ic te c hnology).
As a re s ult, it is n o lo nge r n e c e s s a ry to
d im th e m irro r m a nua lly, a nd th e d rive r
c a n m a inta in fu ll c onc e ntra tio n o n tra f-
fic .
The in te rio r re a rvie w m irro r w ith a uto -
m a tic d im m ing fe a tu re re d uc e s g la re
fro m fo llowing tra ffic b y a d a p tin g th e in-
te ns ity o f th e re fle c te d im a ge s to c orre -
s p ond to le ve ls o f lig ht re gis te re d b y
th e u nit's s e ns ors . Th e m irro r re ve rts to
its u nd im m e d s e ttin g a s s oon a s th e
light s ourc e d is a p p e a rs . O ne o f th e s e
s e ns ors is m ounte d o n th e fro nt o f th e
m irro r h ous ing a nd is d e s igne d to m on-
ito r lig ht le ve ls in th e a re a fo rw a rd o f
th e ve hic le . Th e s e c ond s e ns or is in te -
gra te d w ith in th e m irro r's g la s s . Th e
e le c tro nic c ontro l s ys te m o p e ra te s b y
c om p a ring th e re s p e c tive le ve ls o f lum i-
nous inte ns ity in fro nt o f a nd b e hind th e
c a r. Th e d iffe re nc e p ro vid e s th e b a s ic
p a ra m e te r u s e d to m od ula te a n e le c tri-
c a l c urre nt a nd in d uc e c he m ic a l
The ra in s e ns or c ontro ls w ind s hie ld
wip e r o p e ra tio n, d e p e nd ing on how we t
th e w ind s hie ld is .
Infra re d lig ht is c a rrie d a long th e s ur-
fa c e o f th e w ind s hie ld in a n o p tic a l c on-
d uc to r in s uc h a m a nne r th a t it is re -
fle c te d c om p le te ly w he n th e wind s hie ld
is d ry. Th e q ua ntity o f re fle c te d lig ht is
m e a s ure d .
If th e re is m ois tu re o n th e g la s s , th e
a m ount o f lig ht re fle c te d is re d uc e d
s inc e th e in fra re d lig ht a t th e s urfa c e o f
th e w ind s hie ld c a n e s c a p e . Th e q ua n-
tity o f re fle c te d lig ht is th us a m e a ns o f
ga uging th e d e gre e o f w e tn e s s o n th e
wind s hie ld .
c ha nge s in a s e m is olid la ye r in c orp o-
ra te d in th e le ns .
Online Edition for Part No. 01 41 0 004 597 - © 08/99 BMW Group
| Categories | BMW 7-Series Manuals, BMW Manuals |
|---|---|
| Tags | BMW 740i, BMW 740iL, BMW 750iL, BMW E38 |
| Model Year | 2001 |
| Download File |
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| Document File Type | |
| Copyright | Attribution Non-commercial |
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