Shanghai Longway Special Glass Co., Ltd.
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OEM K9 Optical Doublet Concave Convex Lens For Optic Projector, Telescope
Our lenses are made from the highest quality K9 optical glass, which provides excellent optical clarity and durability. The doublet design combines a concave lens with a convex lens to create a highly corrected image.
These lenses are perfect for use in optic projectors, telescopes, and other optical instruments where high-quality images are essential. They offer:
they are ideal for hobbyists, researchers, and professionals who require high-performance optics.
| Material | Optical Glass, Fused Silica, quartz |
| Diameter Tolerance | +0/-0.15 mm |
| Thickness Tolerance | +/-0.15 mm |
| Cler Aperture | over 90% |
| Surface Quality | 80/50~10/5 scratch and dig |
| Transmission | above 92% |
| Chamfer | 0.1-0.5 mm x 45 degree |
| Focal Length Tolerance | +/-1.5% |
| Back Focal Length Tolerance | +/-1.5% |
| Coating | available |
| Usage | optical system, photographic sysem, Lighting system, Electronic apparatus, e.g. laser, camera, monitor, projector, magnifier etc. |
