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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. This lens shape is best used when one conjugate is relatively far from the lens.

Applications:

Camera Systems
Projection Optics System
Imaging Optics Systems
Laser Measurements Systems
Optical View Finder

Positive Meniscus Lens
Negative Meniscus Lens

 
BK7 Positive Meniscus Lens

Specifications:
Material BK7 grade A optical glass
Design Wavelength 546.1nm
Design Index 1.51830.0005
Diameter Tolerance +0.00/-0.15mm
Paraxial Focus Length 2% @546.1nm
Centration
<3 arc minutes
Clear Aperture >Central 85% of diameter
Surface Figure /4@632.8nm
Surface Quality 60-40 S/D
Protective Bevel <0.25mm x 45

BK7 Positive Meniscus Lens Standard Products:
Part No.
f (mm)
(mm)
R1(mm)
R2(mm)
tc (mm)
te (mm)
fb (mm)

LMP0301

100.0

25.4

33.720

90.00

4.0

2.5

97.5

LMP0302

125.0

25.4

38.47

90.00

4.0

2.8

121.8

LMP0303

150.0

25.4

42.52

90.00

4.0

3.0

146.3

LMP0304

175.0

25.4

46.05

90.00

4.0

3.1

171.2

LMP0305

200.0

25.4

49.03

90.00

3.5

2.8

197.0

LMP0306

250.0

25.4

83.96

235.00

3.5

2.9

246.5

LMP0307

300.0

25.4

94.08

235.00

3.5

3.0

296.3

LMP0308

350.0

25.4

102.90

235.00

3.5

3.1

346.0

LMP0309

400.0

25.4

110.72

235.00

3.5

3.1

395.8

LMP0310

500.0

25.4

123.90

235.00

3.5

3.2

495.4

LMP0311

600.0

25.4

204.95

600.00

3.5

3.2

595.3


BK7 Negative Meniscus Lens

Specifications:
Material BK7 grade A optical glass
Design Wavelength 546.1nm
Design Index 1.51830.0005
Diameter Tolerance +0.00/-0.15mm
Paraxial Focus Length 2% @546.1nm
Centration
<3 arc minutes
Clear Aperture >Central 85% of diameter
Surface Figure /4@632.8nm
Surface Quality 60-40 S/D
Protective Bevel <0.25mm x 45

BK7 Negative Meniscus Lens Standard Products:
Part No.
f (mm)
(mm)
R1(mm)
R2(mm)
tc (mm)
te (mm)
fb (mm)

LMN0301

-100.0

25.4

90.00

32.590

3.0

4.5

-99.2

LMN0302

-125.0

25.4

90.00

37.26

3.0

4.2

-123.7

LMN0303

-150.0

25.4

90.00

41.42

3.0

4.0

-149.5

LMN0304

-175.0

25.4

90.00

44.86

3.0

3.8

-174.6

Note: Coatings are available upon request.

Metal Mount is available upon request. Lenses with material Sapphire, Silicon, Germanium, CaF2, ZnSe etc are also available upon request.

The general tolerance specifications above provide a guideline regarding manufacturing capabilities for optics ranging in size from diameter 0.6-300mm. The manufacturing limits are not absolute; tighter tolerances may be possible. Part specific tolerances may vary depending on component size, shape, and/or material.

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