Danyang Horse Optical Co., Ltd

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Danyang Horse Optical Co., Ltd
Home> Products> Optical Lens> High Quality Double Concave Lenses
High Quality Double Concave Lenses
High Quality Double Concave Lenses
High Quality Double Concave Lenses
High Quality Double Concave Lenses
High Quality Double Concave Lenses
High Quality Double Concave Lenses
High Quality Double Concave Lenses

High Quality Double Concave Lenses

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Payment Type:L/C,T/T,D/P,D/A,Paypal,Money Gram
Incoterm:FOB,CFR,CIF,EXW,FAS,FCA,CPT,CIP,DEQ,DDP,DDU,Express Delivery,DAF,DES
Min. Order:50 Piece/Pieces
Transportation:Ocean,Land,Air,Express
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Product Description
Product Attributes
Packaging & Delivery
Product Description
Product Attributes

Brand: Horse

Packaging & Delivery
Selling Units : Piece/Pieces
Package Type : Plastic boxes
In Production
Product Description
A double concave lens, also known as a biconcave lens, is a lens that is concaved, or curved inward, on both sides. This causes light rays that enter the lens to spread out, or diverge. This type of lens is often used in optical devices to correct nearsightedness or myopia. It can also be used in a variety of other applications, such as in lasers, microscopes, and binoculars.
1
Double concave lenses, also known as biconcave lenses, are lenses that have two concave surfaces. These lenses are thinner at the center and thicker at the edges. They are typically made from materials such as glass or plastic.
2
Double concave lenses are diverging lenses, meaning they cause light rays to spread out or diverge. When parallel rays of light pass through a double concave lens, they are refracted, or bent away from the center of the lens. This causes the light rays to spread out, creating a virtual image that is smaller, upright, and located on the same side as the object.

3


ATTRIBUTE

SPECIFICATIONS

DIAMETER SIZE

smallest 3 mm

DIAMETER TOLERANCE

+0.1, -0.1mm

THICKNESS TOLERANCE

+0.1, -0.1mm

CENTRATION

3 arc minutes

RADIUS

+/-0.1%

CLEAR APERTURE

>90%

SURFACE FIGURE: POWER(N)

<3 fringes

SURFACE FIGURE: IRREGULARITY(N)

<0.5 fringe

SURFACE QUALITY

40/20 scratch and dig

BEVEL

< 0.2 mm x 45°

COATING

With AR coating on outside surfaces


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