Meniscus Lenses

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Attribute:

Primary Materials: Over 120 Visible Materials, Fused Silica

Focal length: ±5mm～1000mm±2%

Thickness tolerance: ±0.2mm

Size: 6mm-300mm

Surface type: λ/10～λ/2

Surface quality: 10/5～80/50

Eccentricity: <3arcmin

Effective aperture: >90%

Chamfer: <0.2*4.5°

Coating: according to customer requirements

Introduction of Meniscus Lenses

One side of meniscus lens is convex, another side is concave. It can be a convergent lens or a divergent lens, which is decided together by refractive index, curvature and radius. The two surfaces of meniscus lenses are in the same direction. Meniscus lenses correct aberrations, eliminate chromatic aberrations and change spherical aberrations. They often combined with other lenses to form an optical system, changing the focal length of extra lenses. Widely used in corrective lenses, condensers for lighting systems, CO2 lasers and infrared optical systems. If the outer arc of the meniscus lens is greater than the inner arc, it can be used as a magnifying glass.

Spherical lens features

Meniscus Lenses

Spherical lens processing types

Plano-convex lenses, double-convex lenses, plano-concave lenses, double-concave lenses, positive meniscus lenses, negative meniscus lenses, flat lenses, single-cap lenses, double-convex double-step lenses

Meniscus Lenses

The meniscus lens can reduce small spherical aberration and can produce the smallest focus of collimated incident light, depending on the relative curvature of the two surfaces, the meniscus lens can be a positive lens or a negative lens. The center of the negative meniscus lens is thinner than the periphery, while the center of the positive meniscus lens is thicker than the periphery.

Meniscus Lenses

Production Capacity Sheet

Category (Diameter)	Thickness Tolerance	Surface Precision	Surface	Eccentricity	Abrasion Degree
φ2～φ3.5	±0.015	0.3	10xMicroscopic test: the center is flawless, and the edge is 20-10	120″	40-300
φ3.5～φ10	±0.015	0.3		45″	40-488
φ10～φ25	±0.02	0.3	15-20	30″	40-488
φ25～φ40	±0.02	0.3	.20-10	30″	40-488
φ40～φ55	±0.02	0.5	40-20	30″	40-488
φ55～φ80	±0.02	0.5	40-20	30″	40-300
φ80～φ150	±0.03	1.0	40-20	30″	40-300

Application

Glass lenses have a wide distribution of refractive index and dispersion, and have good adaptability to temperature and environment. They are widely used in high-end optical lenses, such as digital cameras, security, automotive, optical communications, laser projection, medical, unmanned machine, AR, etc.

Meniscus Lenses

Standard Optical Coating

We provides high-quality coating services. Our company has successively introduced several Optorun coating machines and SHINCRON sputtering coating machines, with standard ＆high quality coating technical capabilities. We can customize the coating according to the individual needs of customers, and provide free design and testing

Coating series
Antireflection coating	400nm-1000nm, R<=0.5%
High reverse coating	420nm-720nm, R>=98%
Metal coating	gold coating, silver coating, aluminum coating etc
Spectro coating	neutral spectro coating, PBS coating, dichroscope coating etc.
Filter coating	long wave pass filter, short wave pass filter, bandpass filter, narrow bandpass filter etc
Functional coating	waterproof coating, anti-fouling coating、UV-IR-CUT、super hard coating, EMS anti-static coating, ITO conductive coating etc