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1 Products availableLeading Manufacturer, Supplier & Retailer of Google Cardboard Biconvex Lens, Objective Lens, condenser lens, Bi-Concave Lens and Bi-Convex Lens.
Double-Concave Lenses Have Two Inward Curved Surfaces and a Negative Focal Length. Used for Image Reduction and to Spread Light.
Bi-convex Lenses are classified by the curvature of the two optical surfaces. A lens is biconvex (or double convex, or just convex) if both surfaces are convex. If both surfaces have the same radius of curvature, the lens is equiconvex.
A triplet lens is a compound lens consisting of three single lenses. The triplet design is the simplest to give the required number of degrees of freedom to allow the lens designer to overcome all Seidel aberrations.
Plano–convex lenses are positive focal length elements that have one spherical surface and one flat surface. These lenses are designed for infinite conjugate (parallel light) use or simple imaging in non-critical applications. These optic lenses are ideal for all-purpose focusing elements.
These lenses are thicker at the edge than in the Centre and flat on one side. The Plano–concave lenses are used to expand light beams or to increase focal lengths in optical systems.
Plano–Concave lenses bend parallel input rays to diverge from one another on the output side of the lens and hence have a negative focal length. They are the best choice when object and image are at absolute conjugate ratios greater than 5:1 and less than 1:5 to reduce spherical aberration, coma and distortion.
90D offers a wide-field fundus imaging. 78D Lens provides an extended working distance from cornea. 20D lens provides ultra-resolution retinal image.
78D the Slit Lamp Lens offers an ideal combination of field and magnification. 78D Lens provides an extended working distance from cornea. 90D This Slit Lamp Lens is the most popular power for non-contact fundus examination. 90D offers a wide-field fundus imaging out to and beyond the equator.
Meniscus lenses have one concave surface and one convex surface. Creates a smaller beam diameter, reducing the spherical aberration and beam waste when precision cutting or marking. Provides a smaller spot size with increased power density at the work piece.
Meniscus lenses are designed to minimize spherical aberration producing a minimum focal spot size for incoming collimated light.
The most common type of achromat is the achromatic doublet, which is composed of two individual lenses made from glasses with different amounts of dispersion. … Together they form a weak positive lens that will bring two different wavelengths of light to a common focus
Bi-convex lens have negative focal length.
Additional Information:
Delivery Time : 8 to 12 days
Purani Tehsil, Roorkee, Uttarakhand 
