| Model: | Spheric Lenses |
|---|---|
| Brand: | crysmit |
| Origin: | Made In China |
| Category: | Electronics & Electricity / Optical Fiber, Cable & Wire / Optical Fiber |
| Label: | Spheric Lenses , optical , crysmit |
| Price: |
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| Min. Order: | 1 pc |
| Live Chat: | Last Online:08 Jun, 2015 |
Crysmit provides five kinds of lens forms, or shapes, that determine the imaging Characteristics of the lenses, they are Plano-convex, Plano-concave ,Double-convex,Double-concave and Meniscus.
Plano-convex lens has a positive focal length, which makes it ideal for collecting and focusing light for many imaging applications.
Plano-concave lens has a negative focal length and is used for image reduction or to spread light.
Double-convex lens has a positive focal length and is useful for 1:1 imaging and in multielement systems. also known as biconvex or equiconvex.
Double-concave lens has a negative focal length and is useful for 1:1 imaging and in multielement systems. also known as biconcave or equiconcave.
Meniscus lens has a positive or negative focal length, it forms a real or virtual image of objects.
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| Plano Convex Lens | Plano Concave Lens | Double Convex Lens |
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| Double Concave Lens | Positive Meniscus Lens | Negative Meniscus Lens |
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Attribute |
Specification |
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Material |
N-BK7, H-K9L, Fused Silica, N-SF10, Silicon, CaF2, Sapphire, etc. |
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Typical Diameter (Фmm) |
10.0, 12.7, 15.0, 20.0, 25.4, 30.0, 50.8, etc. |
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Diameter Tolerance (mm) |
+0.0/-0.2 (General), +0.0/-0.02 (High Precision) |
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Paraxial Focal Length Tolerance (mm) |
±2% |
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Centration |
<3 arc min |
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Clear Aperture |
>80% (Small Size), >95% (Large Size) |
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Surface Figure (per 25mm@632.8nm) |
<1.5λ, (General), <λ/4 (High Precision) |
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IRR ( @632.8nm) |
<λ/4 (General), <λ/10 (High Precision) |
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Surface Quality |
60/40 (General), 10/5 (High Precision) |
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Bevel (face width x 450) |
<0.25mm |
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Coating |
uncoated, AR, HR, PR Coating, etc. |
Note for Spheric Lens:
(1). Other optical glass materials from Schott or Chinese CDGM are also available upon request.
(2). Custom-made Spheric Lenses at any size from diameter 2.0mm to 300mm are available upon request.
(3). Typical paraxial focal length tolerance is ±2%, better tolerance is available upon request
(4). Typical centration is 3 arc minutes, better precision is available upon request.
(5). Besides uncoated, Lenses with Anti-Reflective(AR), High-Reflective(HR), Partial-Reflective(PR) coating are
