Double Concave Lens
A double concave lens/double concave mirrorhas a negative focal length, thereby causing collimated incident light to diverge. The double concave lens/mirror has an equal radius of curvature on both sides of the lens. They are generally used to expand light or increase focal length in the existing system, such as beam expander and projection systems.
Description Of Double Concave Lens/Mirror
The double concave lens of Ecoptik has a negative focal length, thereby causing collimated incident light to diverge. A double concave lens has an equal radius of curvature on both sides of the lens.
Specifications Of Double Concave Lens/Mirror
|
Material |
Optical glass/ Fused silica/ sapphire etc. |
|
Diameter |
2mm~300mm |
|
Diameter tolerance |
±0.05mm(≤50mm) |
|
±0.1mm(＞50mm) |
|
|
Focal length |
-50mm~-2000mm |
|
Focal length tolerance |
±0.2%（＜10mm） |
|
±0.5%（＜10mm-1000mm） |
|
|
±1%（＜＞1000mm） |
|
|
Center Thickness |
2mm~20mm |
|
Surface quality |
60/40， 40/20， 20/10 |
|
Surface accuracy |
|
|
Clear Aperture |
>85% dig diameter |
|
Centration |
<3arc min~ 30arc sec |
|
Coating |
As per customer’s request |
|
Material |
Diameter (mm) |
Surface Radius 1 (mm) |
Surface Radius 2 (mm) |
Center Thickness (mm) |
Focal Length (mm) |
|
H-ZK3 |
5 |
-14.4 |
-14.4 |
3 |
-9.8 |
|
H-ZF6 |
8 |
-7.2 |
-30.5 |
5 |
-7.4 |
|
H-K9L |
10 |
-11.1 |
-11.1 |
2 |
-10.4 |
|
JGS1 |
10 |
-9.25 |
-9.25 |
-9.8 |
|
|
H-ZF7LA |
11 |
-11.9 |
-11.9 |
2 |
-7.1 |
|
H-K9L |
12 |
-25.1 |
-25.1 |
-24 |
|
|
BAF3 |
12 |
-19.5 |
-47.1 |
2 |
-23.4 |
|
ZF11 |
12 |
-12.6 |
-12.6 |
3 |
-7.4 |
|
H-K9L |
-103 |
-103 |
-98.9 |
||
|
H-ZF6 |
13 |
-30.6 |
-154 |
3 |
-33.5 |
|
H-LAK7 |
13 |
-48.9 |
-27.7 |
2 |
-24.4 |
|
H-ZK2 |
13 |
-12.1 |
-15.7 |
1 |
-11.3 |
|
H-ZF6 |
-34.7 |
-79.6 |
-31.6 |
||
|
H-ZF2 |
14 |
-36.2 |
-192 |
3 |
-45 |
|
H-ZF6 |
14 |
-34.7 |
-79.6 |
3 |
-31.6 |
|
H-LAK53A |
14 |
-31.7 |
-58.8 |
-27 |
|
|
H-K9L |
14 |
-27.9 |
-32.2 |
2 |
-19 |
|
H-ZF6 |
15 |
-23 |
-27.7 |
-16.4 |
|
|
H-ZF6 |
15 |
-27.5 |
-23.6 |
-16.4 |
|
|
H-F3 |
15 |
-50.5 |
-11.3 |
-14.8 |
|
|
N-SF6 |
15 |
-13.2 |
-12.1 |
2 |
-7.4 |
|
H-ZF3 |
16 |
-30.6 |
-15.8 |
3 |
-14.6 |
|
H-LAF50B |
-16.8 |
-17.8 |
-11 |
||
|
H-LAF50B |
-37.2 |
-37.2 |
3 |
-23.9 |
|
|
H-K9L |
20 |
-299 |
-85.4 |
2 |
-128 |
|
H-ZF52A |
20 |
-51.6 |
-21 |
-16.7 |
|
|
H-ZF6 |
21 |
-77.4 |
-77.4 |
-51 |
|
|
H-ZF7LA |
21 |
-42.6 |
-184 |
-42.8 |
|
|
H-ZF7LA |
22 |
-255 |
-16.2 |
9 |
-18.7 |
|
H-K9L |
24 |
-11.1 |
-90 |
1 |
-18.9 |
|
JGS1 |
25 |
-92.1 |
-92.1 |
-100 |
|
|
H-K9L |
25 |
-52.1 |
-52.1 |
-50 |
|
|
H-LAF4 |
25 |
-38.4 |
-38.4 |
-25.4 |
|
|
H-F4 |
25 |
-36.7 |
-29.2 |
3 |
-25 |
|
ZK9 |
27 |
-149 |
-52.9 |
-62.7 |
|
|
H-ZK21 |
-281 |
-23.8 |
3 |
-35 |
|
|
BaK2 |
-2249 |
-80.2 |
2 |
-143 |
|
|
JGS1 |
30 |
-71 |
-71 |
3 |
-77 |
|
BaK2 |
-2249 |
-76.4 |
2 |
-137 |
|
|
H-ZF3 |
32 |
-11.8 |
-284 |
2 |
-15.7 |
|
ZF1 |
41 |
-692 |
-170 |
-211 |
|
|
ZF7L |
44 |
-153 |
-49 |
3 |
-45.8 |
|
ZF4 |
54 |
-340 |
-249 |
-197 |
|
|
H-ZF3 |
58 |
-73.8 |
-234 |
4 |
-77.8 |
|
F4 |
60 |
-74.9 |
-78.4 |
1 |
-61.3 |
|
ZF1 |
65 |
-516 |
-163 |
-190 |
|
|
ZBaF3 |
65 |
-296 |
-52.4 |
-67.5 |
|
|
H-ZF2 |
68 |
-83.5 |
-249 |
-92.3 |
|
|
F13 |
68 |
-2465 |
-41.8 |
3 |
-65.6 |
|
H-F4 |
72 |
-170 |
-71.8 |
12 |
-80 |
|
H-K9L |
90 |
-102 |
-347 |
6 |
-15 2 |
Ecoptikis a professional optical components companies, we provide custom optical components, dome flangeand etc. Want to know more? Please contact us.
Send product request
Other supplier products
 |
Neutral Density Filter | Neutral optical density filteris often used in imaging or laser applications to avoid strong light damage to camera sensors or other optical compon... |
 |
Focus on Precision Optical Products for More Than 15 Years | As a professional optical products manufacturer, Ecoptik (also known as BRD Optical) is committed to processing high precision customized precision... |
 |
Optical Spherical Lens | The "spherical curvature" of a spherical lensis constant, meaning that the front and back surfaces lensesare part of the spherical surface, respect... |
 |
Optical Dome | The optical glass domeis our company's superior product. In the past, most of the fairings were infrared grade, which was mostly used in military p... |
 |
Optical Spherical Lens | BRD Optical co. Ltdis one of professional optical mirror manufacturers. We provide Plano Concave Cylindrical Lens, Plano Convex Cylindrical Lens, d... |
Same products
 |
Double Convex Lenses | Seller: Shandong Yanggu Constant Crystal Optics, Inc | Double Convex Lensesare used in image relay applications, or for imaging objects at close conjuga... |
 |
Ball Lenses | Seller: Shandong Yanggu Constant Crystal Optics, Inc | Ball Lensesare commonly used to improve signal quality in fiber coupling applications, or for use... |
 |
Cutomizable CLZ Silicon Domes | Seller: Changchun Long Ze Precision Optics Co., Ltd | The world of technology is constantly evolving, pushing the boundaries of what is possible. In th... |
 |
Custom MgF2 Coated Achromatic Lenses | Seller: Changchun Long Ze Precision Optics Co., Ltd | Our MgF2 coating can be less than 1.75% reflectance @ 400-700nm, AOI=0°. And we can produce h... |
 |
Fused Silica Precision Lenses for Solid State Laser applications | Seller: Changchun Long Ze Precision Optics Co., Ltd | A biconvex lens is a positive lens characterized by a longer focal length in the middle and short... |
