SIGMAKOKI

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SLM
Lens Type
Diameter φD
Focal length f
Back focal length fb
Edge thickness te
Center thickness tc
Material
Radius of curvature r
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Micro lenses are spherical plano convex/biconvex lenses with diameters smaller than 4mm. These small lenses are designed for use in equipment and instruments that demand lighter and smaller footprint optics.

◦Spherical plano convex lenses are useful when parallel beams are converged or lights from sources are converted to parallel beams, i.e., at infinite conjugate ratios.
◦Spherical biconvex lenses are useful when lights from sources are converged or images are relayed to other optical systems, i.e., at unit conjugate ratios.
◦Since these lenses are designed at the wavelength 587.6nm (yellow helium line [d]), the focal lengths of them vary at other wavelengths.

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Technical Data
Documents/Downloads
Guide

▶In addition to our standard products listed on-line and in the catalog, custom products are available. Please contact our Sales Division for assistance with your request.

Attention

▶The micro lenses have spherical aberration and the focal length will vary depending on the wavelength. Please check the “wavelength characteristic of the focal length data” on “Technical Data” for the focal lengths of each wavelength.
▶The plano convex lenses are designed for parallel light to be incident to the convex surface. Using the lens in reverse may increase the spherical aberration and the focused spot may enlarge and the image will appear out of focus.
▶Transmissions losses due to reflection off the front and rear surfaces of the lens can be minimized by coating the surfaces. Consult our Sales Division for anti-reflection coatings suitable for your application.

Common Specifications
MaterialLaSF9 SK2 BK7
Design Wavelength587.6nm
CoatingUncoated
Centration<3′
Surface Quality (Scratch-Dig)40-20
TypeOthers
Outline Drawing

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Schematic
■Micro Plano Convex

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■Micro Plano Concave

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Typical Transmittance Data

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T: Transmission
Reference Data
Spec
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Part Number
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    JP Yen Stock Qty
SLM-1.5-01P
SLM-1.5-1.5P
SLM-02-1.5P
SLM-02-02P
SLM-02-2.5P
SLM-02-03P
SLM-03-2.5P
SLM-03-03P
SLM-03-04P
SLM-03-06P
SLM-04-04P
SLM-04-06P
SLM-04-08P
SLM-04-10P
SLM-03B-03P
SLM-03B-04P
SLM-03B-06P
SLM-04B-04P
SLM-04B-06P
SLM-04B-08P
SLM-02-04N
SLM-03-06N
SLM-04-08N
SLM-02B-02N
SLM-04B-04N

Plano convex

φ1.5mm

1.0mm

0.56mm

0.35mm

0.8mm

LaSF9

0.85mm

Plano convex

φ1.5mm

1.5mm

0.44mm

1.65mm

1.9mm

LaSF9

1.25mm

Plano convex

φ2mm

1.5mm

0.5mm

1.4mm

1.9mm

LaSF9

1.28mm

Plano convex

φ2mm

2mm

1.2mm

1.2mm

1.5mm

LaSF9

1.7mm

Plano convex

φ2mm

2.5mm

1.6mm

1.3mm

1.6mm

LaSF9

2.13mm

Plano convex

φ2mm

3mm

2.2mm

1mm

1.3mm

LaSF9

2.55mm

Plano convex

φ3mm

2.5mm

1.4mm

1.5mm

2.1mm

LaSF9

2.13mm

Plano convex

φ3mm

3mm

1.9mm

1.5mm

2mm

LaSF9

2.55mm

Plano convex

φ3mm

4mm

3.3mm

1mm

1.3mm

LaSF9

3.4mm

Plano convex

φ3mm

6mm

5.1mm

1.1mm

1.4mm

SK2

3.64mm

Plano convex

φ4mm

4mm

2.5mm

1.5mm

2.5mm

SK2

2.43mm

Plano convex

φ4mm

6mm

5mm

0.7mm

1.3mm

SK2

3.64mm

Plano convex

φ4mm

8mm

7.1mm

1.1mm

1.5mm

SK2

4.86mm

Plano convex

φ4mm

10mm

9.1mm

1.2mm

1.5mm

SK2

6.07mm

Biconvex

φ3mm

3mm

2.4mm

1.1mm

1.8mm

SK2

3.26mm

Biconvex

φ3mm

4mm

3.4mm

1.2mm

1.8mm

BK7

3.8mm

Biconvex

φ3mm

6mm

5.5mm

1.1mm

1.5mm

BK7

5.93mm

Biconvex

φ4mm

4mm

3.2mm

1.2mm

2.2mm

SK2

4.4mm

Biconvex

φ4mm

6mm

5.4mm

1.2mm

1.9mm

BK7

5.86mm

Biconvex

φ4mm

8mm

7.4mm

1.2mm

1.7mm

BK7

7.97mm

Plano concave

φ2mm

−4mm

−4.40mm

0.95mm

0.8mm

LaSF9

−3.40mm

Plano concave

φ3mm

−6mm

−6.39mm

1.03mm

0.8mm

LaSF9

−5.10mm

Plano concave

φ4mm

−8mm

−8.37mm

1.10mm

0.8mm

LaSF9

−6.80mm

BIconcave

φ2mm

−2mm

−2.13mm

0.99mm

0.7mm

LaSF9

−3.50mm

BIconcave

φ4mm

−4mm

−4.16mm

1.39mm

0.8mm

LaSF9

−6.94mm

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¥14,700

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¥13,300

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RoHS  

¥10,000

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RoHS  

¥10,000

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RoHS  

¥10,000

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RoHS  

¥10,000

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RoHS  

¥9,400

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RoHS  

¥9,400

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RoHS  

¥8,900

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RoHS  

¥8,900

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RoHS  

¥8,100

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RoHS  

¥8,100

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RoHS  

¥7,600

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RoHS  

¥6,900

LOW
RoHS  

¥10,500

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RoHS  

¥10,500

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RoHS  

¥8,900

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RoHS  

¥10,000

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RoHS  

¥8,300

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RoHS  

¥7,600

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RoHS  

¥9,100

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RoHS  

¥8,400

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RoHS  

¥8,000

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RoHS  

¥12,600

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RoHS  

¥9,100

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