參數(shù)資料
型號(hào): ISL29003
廠商: Intersil Corporation
英文描述: Light-to-Digital Output Sensor with High Sensitivity, Gain Selection, Interrupt Function and I2C Interface(具有高靈敏度,增益可選,中斷功能和I2C接口的光電輸出傳感器)
中文描述: 光到數(shù)字輸出傳感器靈敏度高,增益選擇,中斷功能和I2C接口(具有高靈敏度,增益可選,中斷功能和的I2C接口的光電輸出傳感器)
文件頁(yè)數(shù): 11/15頁(yè)
文件大小: 258K
代理商: ISL29003
11
FN7464.3
October 8, 2007
Window with Light Guide Design
If a smaller window is desired while maintaining a wide
effective viewing angle of the ISL29003, a cylindrical piece of
transparent plastic is needed to trap the light and then focus
and guide the light on to the device. Hence the name light
guide or also known as light pipe. The pipe should be placed
directly on top of the device with a distance of D1 = 0.5mm
to achieve peak performance. The light pipe should have
minimum of 1.5mm in diameter to ensure that whole area of
the sensor will be exposed. See Figure 5.
TABLE 16. RECOMMENDED DIMENSIONS FOR A FLAT
WINDOW DESIGN
D
TOTAL
D1
D
LENS
@ 35°
VIEWING ANGLE
D
LENS
@ 45°
VIEWING ANGLE
1.5
0.50
2.25
3.75
2.0
1.00
3.00
4.75
2.5
1.50
3.75
5.75
3.0
2.00
4.30
6.75
3.5
2.50
5.00
7.75
t = 1
D1
D
LENS
D
TOTAL
Thickness of lens
Distance between ISL29001 and inner edge of lens
Diameter of lens
Distance constraint between the ISL29001 and lens
outer edge
* All dimensions are in mm.
D
LENS
t
L
D
LENS
LIGHT PIPE
ISL29003
D
2
D
2
>
1.5mm
FIGURE 5. WINDOW WITH LIGHT GUIDE/PIPE
6
5
4
0.56mm
0.46mm
2.00mm
S
1
2
3
0.29mm
2.10mm
FIGURE 6. SENSOR LOCATION DRAWING
ISL29003
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