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<title><![CDATA[EC21 Product Catalogs - 660 navigation]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/660_navigation--271307/1/660 navigation.html]]></link><item>
<title><![CDATA[Bi-Concave Lens]]></title><link><![CDATA[https://opticreate.en.ec21.com/Bi_Concave_Lens--11182309_11210009.html]]></link><description><![CDATA[Navigation
.
Material
BK7, Fused silica, Si,Ge,CaF2,ZnSe ect.
Design wavelength
440～660nm
Diameter tolerance
+0.0/-0.05mm(D50mm)
Diameter
D2-D300mm
Focal length tolerance
±2%
Centration
≤0.01mm(]]></description><pubDate><![CDATA[20240710]]></pubDate></item>

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