4.4 Dimming Functions
(ONLY CV-043ADM INCLUDES )
4.4.1 Why need dimming function
● To protect drivers from the nighttime headlight glare.
● It is a function that can improve the car safety level
● It may cause some subsequent legal disputes once removed by car dealers or sellers
4.4.2 manual dimming
The interior rearview mirror will reflect the glare of rearward-approaching vehicles
and it shine to driver's eyes when driving at night, which would cause a serious crisis.
While the manual dimming rearview mirror comes with special glass and rotating
device, when the strong light comes from the back of the car, the driver only need to
rotate it to another angle, that is, strong light will reflected to another area which
ensures the safe driving at night.
mirror plane (high reflectivity)
glass surface(low reflectivity)
the reflectivity of glass surface is much lower than mirror plane
4.4.2 Auto dimming
The auto-dimming of our mirror works automatically when you start the
engine, then the indicator light also lights. The light sensor in the back of the
rearview mirror will always detect the ambient light. The auto-dimming
doesn't work in the broad day for the adequate daylight. However, when night
falls and the ambient light is below 5lux, the auto-dimming starts to work and
automatically dims to eliminate the glare of rearward-approaching vehicles.
Furthermore, the degree of brightness of the auto-dimming glass depends on
the level of the light. The stronger the light from the back of the car is, the
darker the glass is. Hence it protects drivers from becoming dizzy and avoids
car accident.
Auto-dimming working state
Auto-dimming bleaching state
mirror plane (high reflectivity)
glass surface(low reflectivity)
when driving car at daytime.
the image from the backside
car is the reflect image of the
mirror , which is the same
principle of cosmetic mirror.
when driving at night,there is strong light
from rearward-approaching vehicles, the
driver can rotate the manual shank to
another angle, that is, strong light will
reflected to another area . At this monent,
the image from backside car is the
reflectance of glass surface.
the light sensor from the back of
mirror detects the ambient light
front light sensor detects the light
from rearward-approaching vehicles.
manual-dimming working state
manual-dimming bleaching state
Pr
oduct
in
truction
In
st
al
la
tio
n
an
d
w
ire
B
as
ic
fu
nc
ti
on
s
14
13
D
im
m
in
g
(o
p
ti
o
n
)
O
pt
io
na
l f
un
ct
io
ns
