FLTB

## **FLTB Blue Filter** 

_For use with PresencePLUS_[®] 

The FLTB Blue Filter is designed for use with PresencePLUS. This filter improves image quality by helping to reduce unwanted ambient light. It passes blue and infrared light while blocking other visible light (see Figure 1). 

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% Transmission<br>100<br>pe<br>90<br>80 a ee<br>70 ee ee ee<br>60 aee |e<br>ee<br>50 2 eee ie<br>ee<br>40 ee ee ie<br>a)<br>30 ae ee<br>ee<br>20 a ee<br>ee<br>10<br>0 | [LT][iN] a i<br>200 300 400 500 600 700 800<br>Wavelength (nm)<br>NOTE: Peak wavelength 470 nm<br>**----- End of picture text -----**<br>


**Figure 1. Percent transmission of light wavelengths through the FLTB blue filter** 

Install the filter behind the camera lens as follows: 

1. Remove the lens. 

2. Install the filter as shown in Figure 2. Make sure it is fully seated. 

3.  Using the provided retainer ring tool, thread the retainer ring into the sensor until it firmly seats the filter. 

4. Replace the lens on the camera. 

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Filter<br>Ui<br>Retainer Ring Tool Retainer Ring<br>**----- End of picture text -----**<br>


**Figure 2. Installing the FLTB blue filter on the camera** 

- NOTE: Avoid getting fingerprints on the filter. If necessary, carefully clean the filter with lens cleaner or window cleaner. 

Banner Engineering Corp., 9714 Tenth Ave. No., Minneapolis, MN 55441 • Phone: 763.544.3164 • www.bannerengineering.com • Email: sensors@bannerengineering.com 

Rev. A 

Printed in USA 

02/04