LT ULTRA-PRECISION TECHNOLOGY GMBH

Structured optics are produced using turning, milling and planing Technology.. Under thermally controlled conditions we can realize structure depths in the submicrometer range with accuracies also in the submicrometer range. Different types: Microlenses, Grids, Fresnel- optics.

LT Ultra is your partner for the production of optical surface qualities in injection mold inserts. For example, we can manufacture inserts for the injection molding of spectacle lenses with several focal lengths as well as mold inserts for microlenses or components for vehicle lighting systems. In addition to simple geometries such as spheres or aspheres, we mainly manufacture non-rotationally symmetrical components and freeform surfaces.Mold inserts for a long service life can be made from chemically deposited nickel (NiP). Here you can work directly in the nickel. The advantage is that the very durable nickel can also be deposited on substrates that could not be brought into optical quality themselves or only with great effort. On request, LT Ultra offers the complete delivery of the mold insert as well as the processing of additional parts.

With the chip-removing microstructuring of metal surfaces, LT Ultra offers the right manufacturing technology for the production of embossing tools with optical surface qualities that allow economical replication in large numbers. Examples of microstructuring are the production of microfluidics or microlenses on our ultra-precise multi-axis machines. We can manufacture the structures directly in various materials such as brass, chemically deposited nickel or in selected hardened steels.For the replicating production of optical components, ultra-precise mold inserts made of steel are of particular interest due to their very long service life compared to other materials. In order to avoid the final polishing, which often leads to an undesirable change in shape or which is impossible due to a high structure density, LT Ultra offers ultrasound-assisted machining of steels with geometrically defined cutting edges made of monocrystalline diamond.

LT Ultra has also implemented the technology of metal-cutting microstructuring in roller lathes. We can offer the production of structures in a grid between 5 and 150 µm in optical quality for provided rollers.Offer up to a length of 2500 mm, a diameter of up to 800 mm and a maximum weight of 2500 kg.

The laser cutting head FC1 is predominantly used in low to medium power lasers machines, impresses with its slim design and the related low weight. The use of aspheric lenses guarantees the best optical properties; protective glass cassettes on both the collimation side and the pressure seal below the focusing lens protect the optics from contamination. The technical design of the manual adjustment of the focus position is convincing by precision, the focus position can be precisely adjusted without tools via the generously dimensioned adjustment range of 20mm and can safely hold it without countering. The fast distance sensor allows precise control even when cutting the thinnest materials. Thus the FC1 offers excellent cutting performance at an interesting price.

The laser cutting head FC4 is predominantly used in medium power lasers machines, impresses with its slim design and the related low weight. The use of a deformable (adaptive) mirror is of great importance in this case, since no motorized lens adjustment for focus adjustment is required any more. The focus adjustment via adaptive optics above the focusing lens is fast, reliable and precise. Focus positions for a wide variety of materials can be determined, stored in the machine CNC and called up for controlling the optics as desired. The dynamics of the adaptive optics are also clear when piercing the material before the beginning of the cut – for a full stroke, only 0.2 seconds are required. Especially when cutting thicker materials, the time saving can be considerable. The use of aspheric lenses guarantees the best optical properties; protective glass cassettes on both the collimation side and the pressure seal below the focusing lens protect the optics from contamination.

When using high-performance CO2 lasers for welding applications, metal mirrors are usually preferred for beam guidance. Depending on the desired application, the configuration of the machining head is composed of modular individual components according to customer requirements. The possibilities are almost unlimited, ranging from the simplest welding head to complex 3D machining heads. The FH40/C focusing heads are used for laser power up to 5 KW and raw beam diameters up to max. 30mm, the FH60 focusing head for laser power up to 15 KW and raw beam diameters up to max. 50mm. All optical units have connections for direct water cooling, are available with different coatings and are generally available from stock. In addition to the cross-jet for the efficient reduction of splashes and smell on the mirror optics, protective gas feeds with a lateral or coaxial flow direction are also offered for targeted coverage of the welding torch.

SD is our short cut for a laser head consisting of either the swivel axis only or in combination with a highly dynamic linear axis for laser processing of pipes. Suitable optics are used for the laser source used, either directly water-cooled metal mirrors with coatings of least absorption, or alternatively glass optics. The use of an adaptive optics optionally allows the freely programmable focus position for cutting and piercing. The exclusive use of torque motors reduces mechanically moving components and thus guarantees consistently high machining accuracy and best machining results over a long service life, against mechanical damage reliably protects our proven 3D collision protection. The clear aperture of the current laser swivel head SH35 is 35mm, the larger version SH60 is still available with a clear aperture of 60mm.

RSD is our short name for a laser head consisting of a total of 2 motorized axes for use in large-format laser machines in gantry design for 3-dimensional laser cutting / laser welding of components. The horizontal main axis of the laser head permits endless movement, even during the rotary movement the axes below are permanently supplied with cooling water, process gases and all electrical signals. Suitable optics are used for the laser source used, either directly water-cooled metal mirrors with coatings of least absorption, or alternatively glass optics. The use of an adaptive optics optionally allows the freely programmable focus position for cutting and piercing. The exclusive use of torque motors reduces mechanically moving components and thus guarantees consistently high machining accuracy and best machining results over a long service life, against mechanical damage reliably protects our proven 3D collision protection.

RSLD is our short cut for a laser head consisting of a total of 3 motorized axes for use in large-format laser machines in gantry design for the 3-dimensional laser cutting of components. The horizontal main axis of the laser head permits endless movement, even during the rotary movement the axes below are permanently supplied with cooling water, process gases and all electrical signals. Suitable optics are used for the laser source used, either directly water-cooled metal mirrors with low-absorption coating or alternatively glass optics. The use of an adaptive optics enables the freely programmable focus position for cutting and piercing. The exclusive use of torque motors reduces mechanically moving components and thus guarantees consistently high machining accuracy and best machining results over a long service life, against mechanical damage reliably protects our proven 3D collision protection.