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Plano Concave  Lens

Text Box: Specification :

Design Wavelength : 587nm
Clear Aperture : ≥85%

Diameter	Surface		Diameter	Centering		  	Quality		Tolerance	Tolerance

5 – 25		60 –   40		±0.10		± 5 arc min
25 – 40		60 – 40		±0.10		± 5 arc min
40 – 75		60 – 40		±0.10		± 5 arc min

These lenses are thicker at the edge than at the centre and flat on one side. The plano-concave lenses are used to expand light beams or sometimes used to correct the image position in an optical system.

*           Have negative focal lengths 

*           diverge collimated incident light

*            Forms only virtual images which are seen through the lens

Note: Special material and size are available upon request. AR coating  available on request.

Kindly contact us for  custom optics

Dia (mm)

Refractive Index

Center Thickness

Radius

Edge

Thickness

EFL

BFL

6

1.5168

2

5.5

2.8902

-10.6424

-10.6424

9

1.5168

2

7.5

3.5

-14.5124

-14.5124

12

1.5168

2

8.5

4.4792

-16.4474

-16.4474

15

1.5168

2.5

12

5.1325

-23.2198

-23.2198

20

1.5168

3.5

15.50

7.1573

-30.0

-30.0

25

1.5168

4.5

25.84

7.7246

-50.0

-50.0

50

1.5168

5

64.60

13.5336

-125.000

-125.000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Nirmal Optronics

Plot # 26,27/Flat A2 - "Shree Enclave",
Car Nagar,
Behind Reliance Fresh on MPM St.
Subramani Nagar Main Road, Perambur
City: Chennai
State: Tamil Nadu
Country: India
Fax No: +91-44-25581282
Phone No: +91-44-25581282
Mobile No: +919003039922

 

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