Product Description:
Convex-concave (meniscus) lenses can be either positive or negative, depending on the relative curvatures
of the two surfaces. 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. 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. To obtain exactly zero optical power, a meniscus lens must have slightly unequal curvatures to account for the effect of the lens' thickness.
Material:H-K9L, H-BaK7, etc;
Surface quality:40-20;
Dimensional tolerance:0.1mm;
Surface Accuracy:lambda;
Center angle Tolerance:3';
Focal Length Tolerance:2%.
Company Contact:
Contact Name: Tom Von
Company Name: Taiyo Optics (dongguan) Corp.
Email:
Tel: 0086-769-86080086
Fax: 0086-769-86080088
Street Address: No.2 Xianglong Rd,
Xincheng Dist, Shilong Town
Dongguan, Guangdong 523326
China
Website:
http://www.taiyooptics.com
Member name: Taiyooptics
Country:
China
Member Since: 10 September 2016
Total Leads:
30 Taiyooptics Import Export Business Leads
Business focus: Prism, Cylindrical Lens, Optical Coating
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