Top 10

of Chinese Stone Machinery

Lens

Calcium Fluoride (CaF2)Plano-Convex Lenses

Plano-convex (PCX) lenses are positive lenses which are thicker in the middle than at the edge, when collimated rays go through them, light converges to a physical focal point. Plano-convex lenses have one flat side and one curved side with a positive radius of curvature. Plano-Convex lenses have...

Zinc Selenide (ZnSe)Plano-Convex Lenses

Plano-convex (PCX) lenses are positive lenses which are thicker in the middle than at the edge, when collimated rays go through them, light converges to a physical focal point. Plano-convex lenses have one flat side and one curved side with a positive radius of curvature. Plano-Convex lenses have...

N-BK7 (CDGM H-K9L)Plano-Convex Lenses

Plano-convex (PCX) lenses have a positive focal length and can be used to focus collimated light, to collimate a point source, or to reduce the divergence angle of a diverging source. When image quality is not critical, plano-convex lenses can also be used as a substitute for achromatic doublets....

Calcium Fluoride (CaF2)Bi-Convex Lenses

Both surfaces of Bi-convex or Double-convex (DCX) Spherical Lenses are spherical and have the same positive radii of curvature, they are positive lenses which are thicker in the middle than at the edge. When collimated rays pass through them, light converges to a physical focal point. Bi-convex a...

UV Fused Silica (JGS1)Bi-Convex Lenses

Both surfaces of Bi-Convex or Double-Convex (DCX) Spherical Lenses are spherical and have the same radius of curvature, they are popular for many finite imaging applications. Bi-convex lenses are most suitable where the object and image are on opposite sides of the lens and the ratio of the objec...

1.56 Progressive Photochromic UV420 Blue Cut Optical HMC Lens

Progressive lens provide a great solution for people who want to escape the limited correction that most lenses provide. As their name suggests, progressive lens provides clear vision not just for nea and far, but also for all distance in between without any abrupt changes or visible lines in the...

1.56 Photochromic Grey Optical Lens

Lenses photochromic are popular of all-purpose, indoor & outdoor day to day activities. Photochromic lenses are Light-adaptive and can be placed in just about any fashion frame. Photochromic lenses are faster darkening in about one minute, yet they clear indoors immediately in comparison to o...

1.56 Blue Cut UV420 Optical Lens

Nowadays, everybody encounters blue light in daily activities. Fluorescent lighting, electronic screens (phones, computers, TVs, etc.), and the sun emit damaging high-energy blue light.What are the dangers of blue light?Blue light causes the gradual oxidation and deterioration of the retina over ...

1.56 HMC Single Vision Optical Lens

Lenses with  1.56 index are considered the most cost effective lens on the market. They possess 100% UV protection and are 22% thinner than CR39 lenses. These lenses with knife edge finishing suit those irregular frame sizes (small or large) and make any pair of glasses look much thinner. E...

1.523 Glass Bifcoal Semi Finished Photochromic Lens

When a person’s eye adjustment is weakened due to age, he/she needs to correct his/her vision separately for the far and near vision. At this time, he/she often needs to wear two pairs of glasses separately, which is very inconvenient. Therefore, it is necessary to grind two different refractive ...

1.523 Glass Bifocal Photochromic Photogrey Optical Lens

When a person’s eye adjustment is weakened due to age, he/she needs to correct his/her vision separately for the far and near vision. At this time, he/she often needs to wear two pairs of glasses separately, which is very inconvenient. Therefore, it is necessary to grind two different refractive ...

1.523 Glass Photochromic Photogrey Optical Lens

The main raw material of glass lens is optical glass. The transmittance and mechanical and chemical properties of glass lens are relatively good, with constant refractive index and stable physical and chemical properties. Color-changing lenses are exposed to ultraviolet and short-wave visible ...

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