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GCL-010712 Negative Achromatic Doublets

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GCL-010712 Negative Achromatic Doublets

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GCL-0107 Negative Achromatic Doublets

 

An achromatic-doublet consists of a negative low-index(crown glass)cemented with a positive high-index(flint glass)lens. These lenses are computer-optimized for infinite conjugate ratio. While the output rays do not actually meet to form a real point, they appear to be diverging from a virtual point located on the object side of the lens.

 

• Material:                           Optical glass (crown and filnt)
• Focal Length (f'):               ±2% at 587.6nm
• Diameter(φ) Tolerance:       +0.0/-0.10
• 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-0107 Negative Achromatic Doublets

Part No.

ø

f'

fb

Tc

Te

Weight(g)

GCL-010711

25.4

-30

-36.15

12.0

16.71

28.5

GCL-010712

25.4

-40

-44.4

8.5

11.97

20.1

GCL-010713

25.4

-50

-53.37

6.6

9.32

15.6

GCL-010714

25.4

-75

-77.65

6.6

9.13

10.7

GCL-010715

25.4

-100

-102.37

4.6

5.95

10.4

GCL-010716

25.4

-150

-152.6

6.6

7.87

10

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