參數(shù)資料
型號: GP2W0004XP
英文描述: Optoelectronic
中文描述: 光電
文件頁數(shù): 7/15頁
文件大?。?/td> 127K
代理商: GP2W0004XP
Infrared Transceiver
GP2W0004YP/XP
IrDA Technical Information
7
Designing the IR Cosmetic Window
Figure 13 provides example calculations and design
hints for IR cosmetic windows with viewing angles of
±18° in both the vertical and horizontal axes. All values
given here for the transceiver dimensions are only for
design reference and are in mm.
The optical window size should be the minimum size
of W × H, rectangular or elliptical, in order to not reduce
IrDA data transfer performance. The dimensions for W
can be calculated by the formula:
W = 2 × L × tan 18 + w
and the dimensions for H can be calculated by the
formula:
H = 2 × L × tan 18 + h
in the case where the viewing angle is +18°, which
conforms to or exceeds the IrDA Serial Infrared Physi-
cal Layer Link Specification. Any values to be calcu-
lated with these formula must be given in mm.
Figure 13. IR Window Cosmetic Design
w
(8.475)
18
18
L
W
NOTE:
Dimensions are in mm.
GP2W0004YP-12
h
(3.15)
H
L
18
18
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