Description
Product Description:A positive meniscus lens consists of two curved surfaces with similar radii of curvature and has a positive focal length. Usually used to reduce the focal length of another lens, increase the numerical aperture and other related applications. In order to reduce spherical aberration, the beam should be incident on the convex surface of the lens when it is used for expanding or contracting or divergent collimated light; when it is used for converging beam collimation, the beam is incident on the concave surface.
Positive meniscus lenses are primarily used to minimize spherical aberration. When combined with another lens, a positive meniscus lens can reduce the focal length and increase the numerical aperture of the system without introducing significant spherical aberration. When used for converging parallel light, in order to minimize spherical aberration, the convex surface of the transmissive should be oriented towards the direction of light emission.
Coated lenses are also widely used in visible and near-infrared applications.
Product data:
Optional materials: K9, N-BK7, fused silica, etc.
Working range: 400 nm-700 nm (can be customized)
Design wavelength: 546.1nm (n=1.519)
Focal Length Tolerance: ±2%
Outline tolerance:+0.0/-0.02mm
Thickness tolerance:+0.02mm
Curved aperture: 3
Flatness of plane (aperture): 1
Surface local aperture: 0.5
Eccentricity:≤3 arcmin
Surface: In/4@632.8nm
Clear aperture:>90%
Positive meniscus lenses are primarily used to minimize spherical aberration. When combined with another lens, a positive meniscus lens can reduce the focal length and increase the numerical aperture of the system without introducing significant spherical aberration. When used for converging parallel light, in order to minimize spherical aberration, the convex surface of the transmissive should be oriented towards the direction of light emission.
Coated lenses are also widely used in visible and near-infrared applications.
Product data:
Optional materials: K9, N-BK7, fused silica, etc.
Working range: 400 nm-700 nm (can be customized)
Design wavelength: 546.1nm (n=1.519)
Focal Length Tolerance: ±2%
Outline tolerance:+0.0/-0.02mm
Thickness tolerance:+0.02mm
Curved aperture: 3
Flatness of plane (aperture): 1
Surface local aperture: 0.5
Eccentricity:≤3 arcmin
Surface: In/4@632.8nm
Clear aperture:>90%
Safety chamfering: <0.2X45°
Main Cooperation Materials Manufacturers:
CORNING, OHARA, SCHOTT, LEONI, AGC,HELLMA, NIKON,VITRON,C-LASER,ETC
Main Export Countries & Areas:
Usa, Uk, Japan, Germany, Spain, France, Swiss, Korea, Russia, Pakistan, India, Portugal, Canada, New Zealand, Australia, Saudi Arab, Turkey, Finland, Poland ,etc.
Raytekoptics Extra value added services offered:
1). Optical workcraft & process solution design;
2). Rough processing raw materials;
3). Semi finishing raw materials;
4). Fabricate custom sizes and shapes;
5). Design and supply custom coatings;
6). Modify and resurface customer supplied materials;
7). Drill holes, notch glass and provide beveled substrates;
8). Precision polish optics with non-standard aspect ratios;
Payment Method: by T/T or Western Union.
Delivery time: 7-10 days.
Quality Warranty: Ruitaiphotoelectric(Raytekoptics) offers quality warranty for our optics products with "3R" policy. For any inferior-quality products, Ruitaiphotoelectric(Raytekoptics) is responsible for return, replacement and refund.
