Panasonic PT-RW430 Series, Service Manual

Page: 23 / 84

INF - 16
6. Troubleshooting
6. 1. Optical block overview
・
The light source is composed of a blue LED, the red LED and the
laser unit (LD).
LD is formed by 30 blue light laser diodes and mountain type
collimate lens.
・
The blue laser light from LD is equalized with a diffusion board,
after being condensed by a relay lens 1-2.
Then, it reflects with a G-Transmissive Dichroic mirror, and enters
into a phosphor wheel.
・
It is changed into a green light with a phosphor wheel, it is changed
into a parallel light by P-Collimate lens1-3, and enters into a rod
integrator.
・
The light of each LED, changes emission light into parallel light by
each collimate lens, lets each dichroic mirror and each relay lens
pass, and enters into a rod integrator.
LD
uni
t
LD-Relay lens1
LD-Relay
lens 2
Diffuser panel
G-Transmissive
Dichroic mirror
R- Transmissive
Dichroic mirror
Phosphor Wheel
LED-Relay
lens
LED-Collimate
lens1
、
2
P-Collimate
lens1
、
2
、
3
LED-Collimate
lens 2
R
od
int
egr
at
or
Relay lens 1
Relay lens 2
(Lighting area ADJ)
Relay lens 3
、
4
Relay lens 5
DMD
LED
-R
uni
t
LED-B unit
Lens unit
Lighting brock
DMD block
Brightnes
s sensor
Reflection
mirror 2