| Place of Origin: | Wuhan,China |
|---|---|
| Brand Name: | Wuhan Siwer Optics |
| Minimum Order Quantity: | 10 pieces |
| Packaging Details: | 1.Tissue paper.plastic foam packaging film And hard carton box with quakeproof filler |
| Delivery Time: | 4-5 weeks |
| Supply Ability: | 20000 pieces/month |
| Material: | Optical Glass | Type: | Plano Concave |
|---|---|---|---|
| Diameter Range: | 4-300mm | Demension Tolerance: | +/-0.1mm |
| Surface Quality: | 40/20 | Surface Accuracy: | Lambda/4 In 25.4mm |
| Centration: | 3 Arc Min | Standard Coating: | AR@400-700nm |
| Usage: | Optical System | ||
| High Light: | plano concave mirror,concave meniscus lens |
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Plano-Concave Lenses are ideal for beam expansion, light projection, or for expanding an optical system’s focal length. Plano-Concave Lenses, which have one concave surface, are Optical Lenses with negative focal lengths. PCV Lenses should be oriented with the plano, or flat, surface towards the desired focal plane. PCV Lenses are ideal for use in a range of applications or industries.
Plano-Concave (PCV) lenses have one flat and one inward curved surface. PCV lenses have a negative focal length and are used for image reduction or to spread light.
Optical AR Coatings
a) Uncoated,The surface reflectivity of uncoated visible lenses(Refractive index＝1.5) is about 4%.
Click on the link to see how to calculate reflectivity
b) AR/AR@400-700nm,Tavg>99.4%
c) AR/AR@450-650nm,Tavg>99.6%
d) AR/AR@400-1000nm,Tavg>98.5%
e) We can also customize high damage threshold antireflective coatings
| Material | Optical glass |
| AR Coating Range | 400-700nm or customized |
| Reflectance over AR Coating Range @ 0° AOI |
Ravg<0.5% |
| Diameter Tolerance | +0.0/-0.1 mm |
| Thickness Tolerance | ±0.1 mm |
| Focal Length Tolerance | ±2% |
| Surface Quality | 40/20 Scratch-Dig |
| Surface Flatness (Plano Side) |
λ/2 at 633nm |
| Spherical Surface Powerc (Convex Side) |
1.5λ at 633nm |
| Surface Irregularity (Peak to Valley) |
λ/2 at 633nm |
| Centration | <3 arcmin |
| Clear Aperture | >Ø10.16 mm (Ø1/2" Lenses) >Ø20.32 mm (Ø1" Lenses) |
| Design Wavelength | 546nm |
