Double Concave Lens

 A double concave lens/double concave mirror has 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 BRD Optical has negative focal length, thereby causing collimated incident light to diverge. Double concave lens has equal radius of curvature on both side of 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

λ/2~λ/10@632.8nm，532nm

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

1.25

-9.8

H-ZF7LA

11

-11.9

-11.9

2

-7.1

H-K9L

12

-25.1

-25.1

1.26

-24

BAF3

12

-19.5

-47.1

2

-23.4

ZF11

12

-12.6

-12.6

3

-7.4

H-K9L

12.5

-103

-103

1.5

-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

13.5

-34.7

-79.6

1.5

-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

1.5

-27

H-K9L

14

-27.9

-32.2

2

-19

H-ZF6

15

-23

-27.7

2.8

-16.4

H-ZF6

15

-27.5

-23.6

7.23

-16.4

H-F3

15

-50.5

-11.3

1.5

-14.8

N-SF6

15

-13.2

-12.1

2

-7.4

H-ZF3

16

-30.6

-15.8

3

-14.6

H-LAF50B

16.7

-16.8

-17.8

1.8

-11

H-LAF50B

17.3

-37.2

-37.2

3

-23.9

H-K9L

20

-299

-85.4

2

-128

H-ZF52A

20

-51.6

-21

1.9

-16.7

H-ZF6

21

-77.4

-77.4

2.5

-51

H-ZF7LA

21

-42.6

-184

4.064

-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

2.5

-100

H-K9L

25

-52.1

-52.1

3.5

-50

H-LAF4

25

-38.4

-38.4

8.4

-25.4

H-F4

25

-36.7

-29.2

3

-25

ZK9

27

-149

-52.9

1.45

-62.7

H-ZK21

28.6

-281

-23.8

3

-35

BaK2

29.5

-2249

-80.2

2

-143

JGS1

30

-71

-71

3

-77

BaK2

30.5

-2249

-76.4

2

-137

H-ZF3

32

-11.8

-284

2

-15.7

ZF1

41

-692

-170

2.8

-211

ZF7L

44

-153

-49

3

-45.8

ZF4

54

-340

-249

2.5

-197

H-ZF3

58

-73.8

-234

4

-77.8

F4

60

-74.9

-78.4

1

-61.3

ZF1

65

-516

-163

5.49

-190

ZBaF3

65

-296

-52.4

2.5

-67.5

H-ZF2

68

-83.5

-249

5.5

-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

 

BRD Optical is a professional optical component manufacturers, we provide beam splitter cube, double concave mirror and etc. Want to know double convex lens price? Contact us now.



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