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GCL-010420 BK7 Bi-Concave Lenses

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GCL-010420 BK7 Bi-Concave Lenses

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$
13.1
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$
13.1
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Lenses
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GCL-0104 BK7 Bi-Concave Lenses

 

Similar to plano- concave lenses, a bi-concave lens diverges parallel input rays and has a negative focal length. It has a virtual focus at the object side of the lens. Bi-concave lenses are usually suitable for absolute conjugate ratios closer to 1:1.

 

• Material:                          BK7 grade A, fine annealed
• Focal Length (f'):             ±2% at 587.6nm
• Diameter(φ) Tolerance:    +0.0/-0.20
• Center Thickness(Tc):      ±0.1
• Centration:                       3′
• Form Error:                     1~5 fringes
• Irregularity of Fringes:      0.2~0.5 fringes
• Surface Quality:               60-40 scratch-dig
• Coating:                          1/4 wave MgF2 coating at 550nm for 0° angle of incidence
• Clear Aperture:               90% diameter

 

GCL-0104 BK7 Bi-Concave Lenses

Part No

Ø

f'

fb

Tc

Te

Weight(g)

GCL-010401

6.0

-9.8

-10.4

2.0

2.9

1

GCL-010424

10.0

-15.1

-15.8

2.0

3.6

1

GCL-010423

10.0

-30.0

-30.7

2.0

2.8

1

GCL-010402

12.7

-19.0

-19.7

2.0

4.2

1

GCL-010403

12.7

-25.4

-26.0

2.0

3.6

1

GCL-010404

12.7

-38.1

-38.8

2.0

3.0

1

GCL-010422

20.0

-30.0

-30.8

2.7

6.0

3

GCL-010421

20.0

-40.0

-40.9

2.7

5.1

3

GCL-010420

20.0

-60.0

-61.2

2.7

4.3

3

GCL-010405

25.4

-50.8

-51.8

3.0

6.2

6

GCL-010406

25.4

-75.0

-76.3

3.0

5.1

6

GCL-010407

25.4

-100.0

-101.7

3.0

4.6

6

GCL-010408

25.4

-150.0

-150.9

3.0

4.1

6

GCL-010419

30.0

-60.0

-61.3

3.5

7.1

7

GCL-010418

30.0

-180.0

-181.1

3.5

4.7

7

GCL-010417

30.0

-250.0

-251.3

3.5

4.4

7

GCL-010416

40.0

-100.0

-101.4

4.0

7.9

19

GCL-010415

40.0

-150.0

-151.4

4.0

6.6

18

GCL-010412

50.8

-250.0

-251.5

5.0

7.5

29

GCL-010413

50.8

-400.0

-401.6

5.0

6.6

29

GCL-010414

50.8

-500.0

-501.7

5.0

6.3

29

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