Biconvex Lens TJFSGXST201037
Biconvex lenses are positive-power lenses that refract rays to a real or apparent meeting point, forming real images beyond the focus or virtual images inside it. The source describes two convex faces with a thin center and thick edges, while retaining positive focal length and convergence. Applications include cameras, microscopes, projectors, and eyewear for focusing, imaging, and magnification. Series options: diameter D 2-100 mm; EFL 2-800 mm; center thickness Tc 1.4-9 mm; edge thickness Te 0.5-5 mm; optical glass, calcium fluoride, zinc selenide, quartz, or others; AR, HR, bandpass, or beamsplitting coatings. Material comparison, ordered as UV | visible | IR | index | dispersion | processing difficulty | cost | stability: CaF₂, excellent | excellent | good | low | very low | moderate | high | extremely high; ZnSe, poor | excellent | excellent | high | low | moderate | high | moderate; quartz JGS1, good | excellent | average | moderate | moderate | high | medium-high | extremely high; optical glass BK7, poor | excellent | average | moderate | moderate | low | low | moderate. Tables show selected sizes; other sizes and coatings are customizable.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Zinc Selenide Biconvex Lens - Diameter | 13.00 mm |
| Zinc Selenide Biconvex Lens - Focal Length (EFL) | 40.00 mm |
| Zinc Selenide Biconvex Lens - Center Thickness Tc | 2.40 mm |
| Zinc Selenide Biconvex Lens - Edge Thickness Te | 2.00 mm |
| Zinc Selenide Biconvex Lens - Coating | Antireflection Coating |
| Zinc Selenide Biconvex Lens - Material | Zinc selenide (ZnSe) |
| Zinc Selenide Biconvex Lens - Surface Quality | 60/40 |
Applications
Key Features
Datasheet
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