Camera Construction - Nokia NHL-2NA Series Troubleshooting Instructions

NHL-2NA

Camera construction

In this section, some information of the actual construction of the camera module is
given for getting understanding of the actual mechanical structure of the module.
Figure 13: Cross section of the camera module (NMP part # 4858001) and assembly principle (dash line
Lens barrel
Fixing snap
Infrared filter
Lens holder
PWB
Image sensing array area
The camera module as a component is not a repairable part i.e. components in the mod-
ule may not be changed. Cleaning dust from the front face is the only allowable opera-
tion, do this by using clean compressed air.
Cross section of the camera module (NMP part # 4858001) and assembly principle (dash
line showing phone parts) shows the cross section view of the camera module and the
principle of fixing it to a phone. The main parts of the module are
• Threaded lens barrel, containing the lens itself and the lens aperture
• Infrared filter, which is used to prevent infrared light from contaminating the
image colors. IR filter is glued to the lens holder
• lens holder, which is made of conductive, metallized plastic and attached to PWB
by glue
• Image sensor, which is glued and wire bonded to PWB
• PWB, FR-4 type
• Hard wired DSP chip, which is wire bonded and potted to underside of the mod-
ule
• Spring connector with 13 contact springs, containing the component type infor-
mation (laser marked on the surface)
• Passive components
Page 8
showing phone parts)
Aperture
lens view angle
(50 degrees)
Image sensor chip
Potting resin
¤Nokia Corporation
CCS Technical Documentation
Back window (phone)
Rubber gasket (phone)
Lens
Urethane gasket
Sealed cavity
Passive components
Bonding wire
DSP chip
Connector springs
Spring connector
Issue 1 06/02