Biconvex lenses

A biconvex lens is a lens with convex surfaces on both sides, with similar radii of curvature on both sides.

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Attribute:

Materials: High quality and environment-protection optical glass

Include：H-K9, H-BAK7、quartz, fused silica, sapphire etc

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°

Introduction of Biconvex lenses

A biconvex lens is a lens with convex surfaces on both sides, with similar radii of curvature on both sides. Lenticular lenses are symmetrical to minimize spherical aberration, coma, distortion and aberrations. The larger the conjugate ratio, the larger the resulting aberration. One side of the lenticular lens is used to correct polarized light. The other side focuses parallel light into a small spot. Lenticular lenses converge, transmit light, and can transmit images to other optical systems. Commonly used in imaging relay systems and object imaging with limited conjugate distance.

Spherical lens features

Biconvex 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

Biconvex lenses

Lenticular lenses have a positive focal length and can also focus parallel beams. Since the front and rear surfaces of the lenticular lens are convex spherical surfaces with equal radii of curvature, the lenticular lens can significantly reduce spherical aberration and improve coma aberration and distortion in applications where the object and image distances are equal or approximately equal. Lenticular lenses introduce minimal aberrations when the conjugate ratio is between 5:1 and 1:5.

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.

Biconvex 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