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BiConvex Lens Coating:As light passes through an uncoated glass substrate, approximately 4% will be reflected at each surface.
Biconvex lenses are useful for a wide range of finite conjugate or illumination applications.Anti-reflection coatings are available as listed earlier in this section.To order an anti-reflection coated lens simply append the wavelength in nanometers to the product number.Theses bi-convex lenses may be combined with other lenses to form complex imaging systems.
| Item | Google Cardboard Acrylic Biconvex lens Dia 25mm EFL 45mm double convex lens |
| Material | Acrylic |
| Dimension Tolerance | +0/-0.2mm |
| Thickness Tolerance | +/-0.1mm |
| Surface Quanlity | 40-20 or better |
| Surface Figure | lambda/4 or better @632.8nm |
| Center Error | ETV better than 0.01mm |
| Clear Aperture | 90% of diameter |
| Bevel | Protective bevel |
| Coating | No |



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Our in-house metrology laboratory is capable of measuring key properties and parameters of optical components such as transmission and reflection from 175nm to 20um, mechanical dimensions, surface accuracy, surface quality, flatness, parallelism, squareness, angle, centering, MTF, focal length and radius of curvature.

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