Complaint
We are manufacturers of Precision optics & Optical Components viz. Windows, Prisms, Lens, Optical coating Mirrors, Beam splitters, Filters, Band pass, Reticles, Optical flats, Cylindrical lens, Prism cement, etc. We are partners to our customers, providing high-quality solutions meeting demands. The high quality of our products and services, and the satisfaction of our customers are our ultimate objectives. These objectives are based on the benchmark of compliance with the statutory and official regulations, where different requirements exist depending on the market. We are constantly developing our products, technologies, and services in the interests of our customers and partners. In doing so, we comply with international standards in accordance with ISO 9001 for quality management. Please find below a short description of our PHYO High Quality -BK7, Fused Silica, CaF2, SF11,H-BaK4,H-BaK7 Concave-Convex Lens ( Meniscus)
Lens is a kind of optical component used for transmission or refraction light, converging, or diverging the beam. PHYO OPTICS provide many different types of lens fitting for the optical systems. Size can be Dia2.5mm to 400mm as requested. Including customized coating applied on surface. Normally lens material are chosen from CDGM or Schott if specially requested. Meanwhile, we have stocked lens parts for your reference some of them we can provide as free samples for quality evaluation.
Convex-concave lenses, also known as meniscus lens due to its shape, can be either positive or negative depending on the relative radius 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, means that it would neither converge nor diverge light. However, all the real lens has thickness somehow, 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.
| Specification | Commercial | High Precision |
| Material | As Required Schott,CDGM.etc. | As required Schott, CDGM,etc. |
| Diameter Tolerance | +0.00/-0.20mm | +0.00/-0.05mm |
| Focual Length Tolerance | Typical +/-5%@633nm | Typical +/-2% @633nm |
| Centration | Typical <3arcmin | Typical <3arcmin |
| Surface [email protected] | L/4 | L/8 |
| Surface Quality | 80-50 | 40-20 |
| Bevel | 0.2-0.5 | 0.05-0.2 |
| Coating | As required, with paint, Protection coating, high precision | |
| * Glued lens like Archromatic, triplet are still available | ||
We also do custom based orders based on customer requirements and support for R&D project purposes
