GP2W0002YP Datasheet, PDF (11/14 Pages) Sharp Electrionic Components – Low Power Infrared Transceiver

Low Power Infrared Transceiver
GP2W0001YP/GP2W0002YP
Cabinet and IR Cosmetic
Window Design Tips
Figure 17 with its calculations illustrates the design
tips for a cabinet and an IR cosmetic window with ±18°
viewing angles in the vertical and horizontal axes. All
transceiver dimension values are for reference, and
are in mm.
The optical window size should be the minimum size
of W × H, either rectangular or elliptical, to maintain
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 Specifications. Values to be calculated
with above the formula must be given in mm.
L
w
18˚ ^(8.475) 18˚
L
W
18˚
h
(3.15)
18˚
NOTE: Dimensions are in mm.
Figure 17. Optical Window Tips
H
GP2W0001YP-35
Technical Information
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