Aspherical/Specialty Lenses
Aspherical Microlens Arrays
SUMITA’s microlens arrays includes aspheric lenses manufactured by precision molding. For microlens arrays, we use glass materials which have high temperature resistance and durable properties in challenging environments. Our microlens arrays comply with the Telcordia Specifications.
Two configurations available: aspheric microlens arrays for collimator or LD coupling.
Economic mass-production (more than 10 thousand pcs per month) using precision molding die is available upon request.
Applications
- Collimator lens for telecommunications
- Coupling lens for telecommunications
- Condenser lens for LD
Processing Examples
Usage Examples
-
Fiber to Fiber
-
VCSEL to Fiber
Specifications
| Dimensions | ≦ 7 mm |
|---|---|
| Lens thickness | ≧ 0.3 mm |
| Number of lenses | Upon request |
| Pitch tolerance | ≦ 1 µm |
| Radius of curvature | ≧ 150 µm |
| Maximum Tilt | 40° |
| PV error | P-V ≦ 1 µm |
| Surface roughness | Ra 0.030 µm |
Custom made products are available upon request.
Sample Products’ Specifications
| For Collimator | For LD Coupling | ||
| Design wavelength | 1550 nm | 850 nm | |
| Focal length | 0.6 mm | 0.35 mm | 0.22 mm |
| Numerical Aperture | 0.18 | 0.14 | 0.3 x 0.2 |
| Lens pitch | 250 µm | 127 µm | 250 µm |
| Number of lenses | 12 | 40 | 12 |
| Lens diameter | 240 µm | 125 µm | 240 µm |
| Lens thickness | 0.6 mm | 0.76 mm | 0.55 mm |
| Lens sag | 25 µm | 10 µm | 38 µm |
Samples available upon request. Please feel free to contact us.
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