Double Concave

Double Concave Lenses

Optola offers wide range of double concave lenses

Custom design double concave lenses are available upon request.

        DCL          –           063             –           068            –          BK7   

            ↓                            ↓                               ↓                             ↓

Product Code      Dia = 6.35mm    Radius = -6.851mm      Material

 

Part Number

Dia(mm)

EFL(mm)

R(mm)

Te(mm)

Tc(mm)

Material

DCL-063-R068-BK7

6.35

-6.3

-6.851

3.75

2.5

BK7

DCL-063-R133-BK7

6.35

-12.5

-13.333

3.12

2.5

BK7

DCL-127-R133-BK7

12.7

-12.5

-13.333

5.07

2.5

BK7

DCL-127-R262-BK7

12.7

-25

-26.259

3.76

2.5

BK7

DCL-127-R521-BK7

12.7

-50

-52.103

3.13

2.5

BK7

DCL-127-R779-BK7

12.7

-75

-77.943

2.92

2.5

BK7

DCL-127-R1037-BK7

12.7

-100

-103.785

2.82

2.5

BK7

DCL-254-R262-BK7

25.4

-25

-26.259

7.74

2.5

BK7

DCL-254-R521-BK7

25.4

-50

-52.103

5.04

2.5

BK7

DCL-254-R779-BK7

25.4

-75

-77.943

4.19

2.5

BK7

 DCL-254-R1037-BK7   

25.4

-100

-103.785

3.76

2.5

BK7

DCL-254-R1554-BK7

25.4

-150

  -155.466  

3.34

2.5

BK7

DCL-254-R2071-BK7

25.4

-200

-207.148

3.13

2.5

BK7

DCL-508-R779-BK7

50.8

-75

-77.943

9.36

2.5

BK7

DCL-508-R1037-BK7

50.8

-100

-103.785

7.60

2.5

BK7

DCL-508-R1554-BK7

50.8

-150

-155.466

5.88

2.5

BK7

DCL-508-R2071-BK7

50.8

-200

-207.148

5.03

2.5

BK7

DCL-508-R2588-BK7

50.8

-250

-258.824

4.52

2.5

BK7

DCL-508-R5172-BK7

50.8

-500

-517.255

3.51

2.5

BK7

Part Number

Dia(mm)

EFL(mm)

R(mm)

Te(mm)

Tc(mm)

Material

DCL-063-R118-UVFS

6.35

-12.5

-11.865

3.20

2.5

UVFS

DCL-127-R232-UVFS

12.7

-25

-23.237

3.92

2.5

UVFS

DCL-254-R462-UVFS

25.4

-50

-46.29

5.37

2.5

UVFS

DCL-254-R692-UVFS

25.4

-75

-69.241

4.40

2.5

UVFS

DCL-254-R921-UVFS

25.4

-100

-92.192

3.92

2.5

UVFS

DCL-254-R1380-UVFS

25.4

-150

-138.092

3.45

2.5

UVFS

DCL-254-R1839-UVFS

25.4

-200

-183.993

3.21

2.5

UVFS

DCL-254-R2298-UVFS

25.4

-250

  -229.890  

3.07

2.5

UVFS

DCL-254-R9183-UVFS 

25.4

-1000

-918.377

2.64

2.5

UVFS

DCL-508-R921-UVFS

50.8

-100

-92.192

8.26

2.5

UVFS

DCL-508-R1380-UVFS

50.8

-150

-138.092

6.31

2.5

UVFS

DCL-508-R1839-UVFS

50.8

-200

-183.993

5.35

2.5

UVFS

DCL-508-R2298-UVFS

50.8

-250

-229.890

4.78

2.5

UVFS

DCL-508-R4593-UVFS

50.8

-500

-459.380

3.64

2.5

UVFS

DCL-508-R9183-UVFS

50.8

-1000

-918.377

3.07

2.5

UVFS

Note:
   Other sizes and focal length are available upon request. Also the lens ring mounts are available upon request.

Material

BK7 or UV fused silica

Focal Length Tolerance

±1% @589nm

Design Wavelength

589nm

Centration

≤3′

Diameter Tolerance

+0/-0.1mm

Clear Aperture

>central 90%  of  diameter

Center Thickness  Tolerance

±0.1mm

Center Thickness

2.5mm,nominal

Surface Quality

20/10(UVFS)/ 40/20(BK7)

Surface Accuracy

≤ 1.5λ power,λ/2 irregularity(UVFS)

≤ 1.5λ power,λ/4 irregularity(BK7)

Chamfers

0-0.8mm face width×45°±15°

Part Number

  Dimension A(mm)

NPBC-063-λ      

6.35

NPBC-127-λ

12.7

NPBC-150-λ

15.0

NPBC-200-λ

20.0

NPBC-254-λ

25.4

441.6nm  

488-514.5nm  

532nm  

632.8nm  

670nm  

780nm

830nm

1064nm

1300nm

1550nm

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