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Changchun Ruiqi Optoelectronics Co.,Ltd
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Recommended Results
negative/positive meniscus cylindrical Lens
產品分類 :
機械與設備->工業儀器設備->精密塗裝檢測儀器
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產品規格
Model No:
RQ-CY
Country
CN
Brand
CCRQ
Packing
carton
Minimum Order
10
Payment Term
T/T,Paypal,Western Union
產品描述
<p style="font-family:Arial;text-align:center;" align="left">
<span style="line-height:27px;font-family:Verdana;font-size:16px;"><span style="color:#333333;font-family:times new roman , times;font-size:18px;background-color:#FFFFFF;">negative/positive meniscus cylindrical Lens</span></span>
</p>
<p style="text-align:left;font-family:Arial;" align="left">
<span style="font-size:16px;font-family:Verdana;"><span style="font-family:Verdana;font-size:12px;"> </span></span>
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<p style="font-family:Arial, Helvetica, sans-senif;vertical-align:baseline;color:#333333;">
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</p>
<p>
<span style="font-family:Verdana;">Convex-concave (meniscus) lenses can be either positive or negative, depending on the relative curvatures of the two surfaces. </span>
</p>
<p>
<span style="font-family:Verdana;">A negative meniscus lens has a steeper concave surface and is thinner at the centre than at the periphery. Conversely, a positive meniscus lens has a steeper convex surface and is thicker at the centre than at the periphery. </span>
</p>
<p>
<span style="font-family:Verdana;">An ideal thin lens with two surfaces of equal curvature would have zero optical power, meaning that it would neither converge nor diverge light. All real lenses have nonzero thickness, however, which makes a real lens with identical curved surfaces slightly positive</span>
</p>
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<p style="font-family:Arial;">
<span style="line-height:24px;font-size:16px;"><span style="font-family:Verdana;font-size:12px;"><b><span id="ctl00_ContentPlaceHolder1_lblTitle" style="font-size:12px;font-family:Verdana;"><span style="font-size:12px;font-family:Verdana;"> Convex-concave (meniscus) Cylindrical Lenses</span></span></b><span style="font-size:14px;"></span><br />
</span></span>
</p>
<p style="font-family:Arial;">
<span style="line-height:24px;font-size:12px;font-family:Verdana;"><span style="font-family:Verdana;font-size:12px;">Specifications:</span></span>
</p>
<p style="font-family:Arial;">
<span style="line-height:24px;font-size:16px;"><span style="font-family:Verdana;font-size:12px;">
<table align="left" border="0" cellpadding="0" cellspacing="0" style="font-family:Simsun;margin:auto 6.75pt;" class="ke-zeroborder">
<tbody>
<tr>
<td valign="bottom" width="145" style="border:medium none #D4D0C8;">
<span style="font-size:12px;font-family:Verdana;">Diameter Tolerance:</span>
</td>
<td valign="bottom" width="150" style="border:medium none #D4D0C8;">
<span style="font-size:12px;font-family:Verdana;">+0/-0.1mm</span>
</td>
</tr>
<tr>
<td valign="bottom" width="145" style="border:medium none #D4D0C8;">
<span style="font-size:12px;font-family:Verdana;">Thickness Tolerance:</span>
</td>
<td valign="bottom" width="150" style="border:medium none #D4D0C8;">
<span style="font-size:12px;font-family:Verdana;">±0.1mm</span>
</td>
</tr>
<tr>
<td valign="bottom" width="145" style="border:medium none #D4D0C8;">
<span style="font-size:12px;font-family:Verdana;">Concentricity:</span>
</td>
<td valign="bottom" width="150" style="border:medium none #D4D0C8;">
<span style="font-size:12px;font-family:Verdana;">< 3 arc min.</span>
</td>
</tr>
<tr>
<td valign="bottom" width="145" style="border:medium none #D4D0C8;">
<span style="font-size:12px;font-family:Verdana;">Clear Aperture:</span>
</td>
<td valign="bottom" width="150" style="border:medium none #D4D0C8;">
<span style="font-size:12px;font-family:Verdana;">> 85% of diameter</span>
</td>
</tr>
<tr>
<td valign="bottom" width="145" style="border:medium none #D4D0C8;">
<span style="font-size:12px;font-family:Verdana;">Focal Length Tolerance</span>
</td>
<td valign="bottom" width="150" style="border:medium none #D4D0C8;">
<span style="font-size:12px;font-family:Verdana;">± 2%</span>
</td>
</tr>
<tr>
<td valign="bottom" width="145" style="border:medium none #D4D0C8;">
<span style="font-size:12px;font-family:Verdana;">Surface Figure:</span>
</td>
<td valign="bottom" width="150" style="border:medium none #D4D0C8;">
<span style="font-size:12px;font-family:Verdana;">l/4 at 632.8nm</span>
</td>
</tr>
<tr>
<td valign="bottom" width="145">
<span style="font-size:12px;font-family:Verdana;">Surface Quality:</span>
</td>
<td valign="bottom" width="150">
<span style="font-size:12px;font-family:Verdana;">40-20 scratch-dig</span>
</td>
</tr>
</tbody>
</table>
<span style="font-family:Verdana;font-size:12px;"></span><br />
</span></span>
</p>
<p style="font-family:Arial;text-align:center;" align="left">
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</p>
<p style="font-family:Arial;text-align:center;" align="left">
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<p style="font-family:Arial;text-align:center;" align="left">
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<p style="text-align:left;font-family:Arial;" align="left">
<span style="font-family:Verdana;font-size:14px;">Drawing for reference</span>
</p>
<p style="font-family:Arial;text-align:center;" align="left">
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</p>
<p style="font-family:Arial;text-align:center;" align="left">
<img src="http://i.bosscdn.com/product/c2/63/06/625c0127b2e788e801b58a89dc.jpg@watermark=2&color=I0ZGRkZGRg%3D%3D&type=ZHJvaWRzYW5zZmFsbGJhY2s%3D&size=21&p=5&t=80&text=cnVpcWlvcHRpY3MuYm9zc2dvby5jb20%3D" title="achromatic lens drawing" alt="achromatic lens drawing" />
</p>
<p style="font-family:Arial;text-align:center;" align="left">
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</p>
<p style="text-align:left;font-family:Arial;" align="left">
<span style="font-size:14px;">Products Show</span>
</p>
<p style="text-align:left;font-family:Arial;" align="left">
<span style="font-size:14px;"><img src="http://i.bosscdn.com/product/01/fb/27/a0107ef2f118b6dd1003627453.jpg@watermark=2&color=I0ZGRkZGRg%3D%3D&type=ZHJvaWRzYW5zZmFsbGJhY2s%3D&size=21&p=5&t=80&text=cnVpcWlvcHRpY3MuYm9zc2dvby5jb20%3D" title="achromatic lens" alt="achromatic lens" /><img src="http://i.bosscdn.com/product/82/f1/e4/9757d92025597e450dd06218b8.jpg@watermark=2&color=I0ZGRkZGRg%3D%3D&type=ZHJvaWRzYW5zZmFsbGJhY2s%3D&size=21&p=5&t=80&text=cnVpcWlvcHRpY3MuYm9zc2dvby5jb20%3D" title="cemented cylindrical lens" alt="cemented cylindrical lens" /><img src="http://i.bosscdn.com/product/6e/0c/16/981db2e54290d830cec8af599f.jpg@watermark=2&color=I0ZGRkZGRg%3D%3D&type=ZHJvaWRzYW5zZmFsbGJhY2s%3D&size=21&p=5&t=80&text=cnVpcWlvcHRpY3MuYm9zc2dvby5jb20%3D" title="cylindrical achromatic lens" alt="cylindrical achromatic lens" /><br />
</span>
</p>
<p style="text-align:left;font-family:Arial;" align="left">
<br />
</p>
<p style="font-family:Arial;text-align:center;" align="left">
<img src="http://i.bosscdn.com/product/ab/64/42/862f754901096e587ea5f4fa19.jpg@watermark=2&color=I0ZGRkZGRg%3D%3D&type=ZHJvaWRzYW5zZmFsbGJhY2s%3D&size=21&p=5&t=80&text=cnVpcWlvcHRpY3MuYm9zc2dvby5jb20%3D" title="testing" alt="testing" /><img src="http://i.bosscdn.com/product/dd/fd/55/17611dc7d93a1e700f874ae838.jpg@watermark=2&color=I0ZGRkZGRg%3D%3D&type=ZHJvaWRzYW5zZmFsbGJhY2s%3D&size=21&p=5&t=80&text=cnVpcWlvcHRpY3MuYm9zc2dvby5jb20%3D" title="surface testing" alt="surface testing" /><img src="http://i.bosscdn.com/product/1e/ef/e6/4de96946e566cf925812221b01.jpg@watermark=2&color=I0ZGRkZGRg%3D%3D&type=ZHJvaWRzYW5zZmFsbGJhY2s%3D&size=21&p=5&t=80&text=cnVpcWlvcHRpY3MuYm9zc2dvby5jb20%3D" title="factory" alt="factory" />
</p>ruiqi-optics.com
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