Spectacle lenses - Import export

Differentiation between ANSI and DIN / EN ANSI eyeglass blinds differ from DIN / EN eyeglass blinds in terms of pressure levels, sealing strips and materials. In German-speaking countries, glasses blind disks are also called blind disks or throttle disks. However, the English terms “spectacle blind”, “blind paddle” are also often used in Germany. Pressure ratings according to ANSI in lbs The following pressure levels for blind disks according to ANSI are available 150, 300, 600, 900 and 1500 lbs. Sealing strips The following forms of sealing strips are available: SMF, FF, RF and RTJ. Materials The steel materials A 516 GR 60 and A 516 GR 70 are available. In the stainless steel sector, the materials TP 304 / L, TP 316 / L and TP 312 are possible.

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.

3DMicromac‘s laser system microMARK™ RXe has revolutionized the efficiency of blocked lens engraving by using excimer lasers. Equipped with an optimized optical components setup and a large sized magnification ratio, this new generation of RX marking devices offers an increased depth of focus at lowest laser power operation on all materials. Customers benefit from low investment and small operating costs. High quality engraving Accurate contrast adjustment Low investment and operating costs Reliable process stability Smallest excimer system footprint available on the market High quality engraving with accurate contrast adjustment on a variety of spectacle lenses and coatings Smallest required space on the market Low investment and operating costs Easy retrofit of automated handling system at customer’s site on request

The production of ophthalmic lenses requires different marking processes, e.g. technical engraving and branding for spectacle lenses as well as UDI marking for contact lenses. 3DMicromac offers ophthalmic marking solutions for laser engraving of all types of ophthalmic lenses, e.g. prescription and sunglasses, or contact lenses. All systems use UV lasers for permanent marking and guarantee Highest engraving precision Accurate contrast adjustment Reliable process stability Maximum throughput Top availability Flexibility in system configuration and Simple retrofitting. 3DMicromac‘s customers can choose between premium quality excimer laser systems and high quality maintenance free DPSS laser systems. Both are suitable for the production of technical engravings and visible branding on blocked and unblocked lenses, as well as contact lenses. The microMARK™ MCF excimer laser system generates the engravings by cold laser ablation of 193 nm UV radiation.

3DMicromac‘s microMARK™ MCL is a compact and maintenance free DPSS laser system to meet customer’s demand for high quality laser engraving with significantly decreased cost of ownership. The system is utilized for visible, invisible as well as for technical engravings of all kind of spectacle lenses as well as marking of hard and soft contact lenses. The use of a UV DPSS laser source achieves a high quality marking result comparable to excimer laser engravings. High quality laser engraving Accurate contrast adjustment Low investment and operating costs Maintenance free laser source Plug-and-play replacement of main components directly by the customer High quality engraving with accurate contrast adjustment on a variety of spectacle lenses and coatings