OPTICAL LENSES

OPTICAL glass is called glass whose quality is suitable for the production of optical systems such as lenses, prisms or mirrors; it contains additives intended to modify certain optical or mechanical properties of the glass: refractive index, dispersion, transmittance, thermal expansion, etc. The glasses produced for optics use a wide variety of materials, some glasses require up to twenty different chemical components to obtain the desired optical properties. In addition to their optical and mechanical parameters, optical glasses are also characterized by their purity and quality, necessary because of their use in precision instruments. Defects are quantified and classified according to international standards: bubbles, inclusions, scratches, index defects, coloration, etc. Different surface treatments can be applied to these glasses, further modifying their transmission or absorption properties. The progress made in recent years in UV bonding and molecular adhesion makes it possible to manufacture more and more complex optical parts: prism, flat convex/concave/biconvex lens, meniscus, cylindrical lens, reflector, mirror, separator, thin blade , dome, simple or machined porthole. The special light retention and the purity of these glasses make them a very attractive product for designers, who increasingly use these glasses for their various projects. WE MAKE PROTOTYPES OF ALL KINDS ACCORDING TO YOUR DRAWINGS. The family of optical glasses being the most important, we present on this page only the technical sheet of the HK9L, equivalent to the NBK7 which is the most commercialized standard optical glass, do not hesitate to contact us for any other type of material, Sapphire, CaF2 or others.