參數(shù)資料
型號： LT0H49L
廠商： Sharp Corporation
英文描述： Compact Hologram Laser
中文描述： 緊湊型全息激光
文件頁數(shù)： 3/3頁
文件大?。?/td> 31K
代理商： LT0H49L
Measuring method of electro-optical characteristics
Laser
Driver
HL
C.L
NA=0.11
f=20.6mm
Actuator
NA=0.50
f=4.5mm
Disk
(SONY:YEDS-18)
Vcc=5V,Tc=25
MAX.
0.5
Focus error balance*3
Radial error balance*4
20
20
%
%
RF output amplitude*5
Focus error signal output amplitude*6
Radial error signal output amplitude
V
RF
V
RF
=0.55V
V
RF
=0.55V
P
O
=3.0mW
P
O
=3.0mW
V
RF
=0.55V
V
RF
=0.55V
0.38
0.23
0.08
0.9
0.35
0.12
V p-p
V p-p
V p-p
0.47
0.16
20
20
Parameter
Symbol
Condition
MIN.
0.5
TYP.
Unit
μ m
Focus error signal offsetting*2
a
b
GND
*4
( + amplitude of RES )
( - amplitude of RES )
APC
A
B
( + amplitude of FES)
( - amplitude of FES)
*3 (a - b) / (a + b)
Tec.970101
LT0H49L/T
Electro-optical Characteristics*1
*1 Measuring method is shown below.
V
A
,V
B
,V
E
,V
F
: Refer to pattern segment No.(Fig.1).
*2 Distance between FES=0 and jitter Min. point
( a - b )
2 X ( a + b )
*5 Amplitude of V
A
+ V
B
+ 2V
C
, focus/radial servo is ON-state.
*6 V
B
-V
A
at focus rocking condition
*7 V
E
-V
F
under the condition that only focus servo is effected.
As of January 1997
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