Micro Optics

Fast Axis Collimation

Micro Optics Diagram 1 Fast Axis

The diode laser beam is collimated using the FAC lens as it minimizes the divergence angle along its fast axis.   These lenses have an acylindrical surface and are made from high-quality glass.  The diffraction-limited collimation is achieved with a high numerical aperture of the lens.

Material

K-VC89, N-LaF21

Length Tolerance

+/- 0.10mm upto 14mm

Height Tolerance

+/- 0.01mm for N-LaF21
+/- 0.02mm for K-VC89

CT Tolerance

+/- 0.01mm for N-LaF21
+/- 0.02mm for K-VC89

Transmission

>99%

Coating

Standard AR 780-1020nm

Part NumberNAEFL (mm)BFL (mm)CT (mm)MaterialDiv Angle(mrad)
FAC06-1500.600.150.030.22K-VC894.60
FAC07-5000.700.300.080.70K-VC891.34
FAC08-9000.800.900.091.50K-VC890.80
FAC07-20000.652.000.103.37N-LaF210.36
FAC08-28000.752.800.094.78N-LaF210.26

Slow Axis Collimation

SAC lenses are either a monolithic array of cylindrical lenses or a single lens used to reduce the beam divergence angle along the slow axis of a diode laser.  They have minimized dead zones and are compatible with laser bars and stacks.

Length Tolerance

+/- 0.10mm

Height Tolerance

+/- 0.02mm

CT Tolerance

+/- 0.02mm

Transmission

>99%

Coating

Standard AR 780-1020nm

Part NumberNAEFL (mm)PE (mm)CT (mm)
SAC-010-2000.101.000.201.00
SAC-015-4000.131.500.401.00
SAC-028-4980.072.800.491.00
SAC-030-5000.083.000.501.00
SAC-058-7100.055.800.711.00
SAC-80-10000.068.251.001.00
SAC-100-10000.0510.301.001.00

C-Module

Collimation Module or C-Module consists of two micro-optics, a FAC lens and a SAC array fixed and aligned in one single module.  It reduces the divergence of a diode laser beam in the fast and the slow axis simultaneously and collimates with the highest brightness.  It is a simple, compact and cost-efficient module for diode laser with minimum size.

Material

SUMITA optical glass

Length Tolerance

+/- 0.10mm

Height Tolerance

+/- 0.05mm

Thickness Tolerance

+/- 0.05m

Transmission

>98%

Coating

Standard AR 780-1020nm

Part NumberSAC EFLFAC EFLPEDiv Angle (mrad)
C-600-022-5002.200.600.501.20
C-900-022-5002.200.900.500.80
C-600-030-5003.000.600.501.20
C-900-030-5003.000.900.500.80
C-900-060-10006.190.901.000.80

Microlens Array

Micro Optics Diagram 4 Microlens Arrays

Microlens arrays have superior form accuracy within submicron range and the dimension in sub-millimetre range. These arrays are used effectively in imaging, illumination and collimation of laser light.  Lens arrays with spherical or aspherical curvature have high filling factors and minimum dead zones, making it useful for unique beam shaping applications.  Cylindrical arrays produce an aberration-free image and give the best possible light efficiency and used for the transformation of high power diode laser beams.

Spherical & Aspherical

Material

Optical Glass
(High Index Material)

Pitch Accuracy

<1µm across 25mm

Form Accuracy

<250nm

EFL Tolerance

<1%

Dead Zones

<10µm

CT Accuracy

<20µm

Cylindrical Microlens Arrays

Material

Optical Glass
(High Index Material)

Pitch Accuracy

<2µm across 25mm

Form Accuracy

<100nm

EFL Tolerance

<1%

Transition zone between lenslets

<10µm

Product TypePart NumberDimension(mm)MaterialEFL (mm)PE (mm)CT (mm)Qty of lensletsDev Angle (mrad)
Aspherical Lens ArrayMLA-ASPH-PL-CX-0.7215.0 x 12.0K-VC890.723.2-201.3
Aspherical Lens ArrayMLA-ASPH-PL-CX-2.288.0 x 6.0L-BSL72.281.1-1.3-91.0
Cylindrical Lens ArrayHomogenizer Array-18.535.0 x 28.0K-VC8918.51.32.0--
Cylindrical Lens ArrayHomogenizer Array-19.430.0 x 26.0K-VC8919.40.82.0--

Asphere & Acylinder

Laser Optics Micro Optics

Aspheres and Acylinders are used for achieving the highest image quality. They have many useful characteristics such as minimization of aberrations, an increase in efficiency, a decrease in the total number of optical elements and a reduction in weight of the optical systems.  

Aspheres/Spheres < 5.0mm

Material

Optical Glass (high index material)

Lens diameter

2.0 – 5.0 mm

Diameter Tolerance

< 0.30mm

Lens aperture

Round, Rectangular

EFL Tolerance

< 1%

Acylinders

Material

Fused Silica,

optical glass (high index material)

EFL Tolerance

< 0.5%

Form Accuracy

< 600nm

EFL

70 – 200 mm

Length

20 – 60 mm

Height

40 – 120 mm

Center Thickness

4.0 – 40.0 mm

Product TypePart NumberDimension (mm)EFL (mm)CT (mm)Form Accuracy (nm)Material
AsphereASPH-PL-CX-2.44.2 x 4.22.42.0< 260K-VC89
AsphereASPH-PL-CX-9.55.69.53.0<97K-VC89
AcylinderACYL-PL-CX-12320.0 x 49.0 x 9.0123.0-< 400Fused Silica
AcylinderACYL-PL-CX-15558.0 x 120.0 x 35.0155.0-< 600Fused Silica

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