Sill Optics presents F-theta lens for the photovoltaic sector

The f-Theta lens S4LFT1330/075: Precision for efficient photovoltaic production.

The f-Theta lens S4LFT1330/075: Precision for efficient photovoltaic production.

The energy transition presents us with global challenges. Renewable energies such as photovoltaics are of central importance. A key to increasing efficiency in photovoltaics is improving the manufacturing processes of solar cells. Laser material processing is used for welding and soldering individual cells into a module, for doping selective emitters, and for removing very thin anti-reflective and passivation layers. In addition to cost-effective and rapid production, the process offers further advantages for the industry, such as high precision and an achievable line width of a few micrometers. The F-Theta lens S4LFT1330-075 was specifically developed for such applications.

Particularly in the removal of anti-reflective and passivation layers, lasers in the ultraviolet range are used. These layers improve optical and electrical properties and thus increase the efficiency of the solar cell. The particularly small focus size in the ultraviolet range allows for a correspondingly narrow line width.

Sill Optics GmbH has established itself as a leading provider of F-Theta lenses for the photovoltaic sector. Although the S4LFT1330-075 is suitable for wafers of size M12/G12, smaller wafers up to M2 can also be processed.

The S4LFT1330-075 lens is suitable for a wavelength range of 343 nm - 355 nm and achieves a spot size of < 18 μm on a field of 210 mm x 210 mm when utilizing the free aperture of 14 mm. The product family includes additional lenses with similar specifications, also designed for other wavelengths in the green (515 nm - 532 nm) and infrared (1030 nm - 1090 nm) ranges.

Like all products from Sill Optics GmbH, this F-Theta lens is characterized by its advanced optical and mechanical design and high quality standards in manufacturing. The assembly in a cleanroom ensures a long lifespan of the lens.

This lens has been on the market for some time and is successfully used by many customers worldwide.