Due its maskless 3D technology, Multiphoton Optics’ two-photon absorption (TPA) process enables the generation of refractive and diffractive microoptical elements with arbitrary shapes in an arbitrary arrangement on a large variety of substrates.
This unlimited freedom of design is a unique feature compared to conventional techniques, and it thus provides the solution for novel device architectures in order to cope with the increasing demand of creating miniaturized devices with multiple functions.
There are two scenarios to employ the technology in microlens fabrication. Individual microlenses or microlens arrays can be fabricated using LithoProf3D® directly on photonic chips or on substrates to be implemented in endoscopic devices for in- and outcoupling purposes. These microlenses can be fabricated by our technology with a surface roughness of 2 to 4 nm, way below the critical value of λ/10 (with λ being the operation wavelength of the device). Thus, microlenses or microlens arrays for devices operating in the IR down to the VIS and the UV range can be created. Aside of this, replication masters can be manufactured, providing mass production capabilities of sophisticated optical designs.
Single microoptical devices, arrays, or even combinations of differently shaped microlenses providing specially designed, novel imaging properties can be conveniently fabricated by LithoProf3D®. These lenses or lens arrays are, for example, very useful for imaging and sensor products in all kind of application scenarios, where these sensor and imaging products are employed.