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Meniscus Lens
Meniscus Lens can increase the NA of the system while only adding slightly to the total spherical aberrations. The Negative Meniscus Lens is used to increase the focal length of another lens while maintaining the angular resolution of the optical assembly.
Capacity:
Material: Optical glass, Fused silica, Silicon, Germanium, CaF2, MgF2, Sapphire, ZnSe, ZnS
Diameter: 0.5 to 350 mm
Diameter Tolerance: +0/-0.02 mm
Thickness Tolerance: ±0.01 mm
Surface Quality: 10-5
Surface Figure: λ/10
Centration: 1 minute or 30 Second
Coating: Uncoated, AR and HR
Meniscus Lens.jpg

Positive Meniscus Lens:

Material

BK7 grade A optical glass

Design Wavelength

546.1 nm

Design Index:

1.5183 ± 0.0005

Diameter Tolerance

+0.00, -0.15 mm

Thickness Tolerance

±0.2 mm

Paraxial Focal Length

±2%

Centration

<3 arc minutes

Clear Aperture

>85%

Surface Irregularity

λ/4@632.8 nm

Surface Quality

60-40 scratch and dig

Protective Bevel

0.25 mm x 45°


BK7 Positive Meniscus Lens Standard Products:

 

 

Note: Other material, size and coating are available upon request.

Part No.

f (mm)

Ф(mm)

R1 (mm)

R2(mm)

t c(mm)

t e(mm)

f b(mm)

TPM101

100.0

25.4

33.72

90.0

4.0

2.5

97.5

TPM102

125.0

25.4

38.47

90.0

4.0

2.8

121.8

TPM103

150.0

25.4

42.52

90.0

4.0

3.0

146.3

TPM104

175.0

25.4

46.05

90.0

4.0

3.1

171.2

 

Negative Meniscus Lens:

Part No.

f (mm)

Ф(mm)

R1 (mm)

R2(mm)

t c(mm)

t e(mm)

f b(mm)

TPM101

100.0

25.4

33.72

90.0

4.0

2.5

97.5

TPM102

125.0

25.4

38.47

90.0

4.0

2.8

121.8

TPM103

150.0

25.4

42.52

90.0

4.0

3.0

146.3

TPM104

175.0

25.4

46.05

90.0

4.0

3.1

171.2

 

BK7 Negative Meniscus Lens Standard Products:

Part No.

f (mm)

Ф(mm)

R1 (mm)

R2(mm)

t c(mm)

t e(mm)

f b(mm)

TNM101

-100.0

25.4

90.0

32.59

3.0

4.5

-99.2

TNM102

-125.0

25.4

90.0

37.26

3.0

4.2

-123.7

TNM103

-150.0

25.4

90.0

41.42

3.0

4.0

-149.5

TNM104

-175.0

25.4

90.0

44.86

3.0

3.8

-174.6

Note: Other material, size and coating are available upon request.

 

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