Compared with traditional transmission diffuser material, a holographic diffuser provides for precise control of the shape of the transmitted beam, in addition to homogenising the light and providing for excellent hiding of the light source and reduction of undesirable hot-spots.
Holographic diffusers are an enabling technology in many lighting, automotive and display applications.
WaveFront Technology’s embossing capabilities are wide reaching. Micro-Structured features are used to control light from simply bending light in one direction or diffuse light in a controlled manner or to create a complicated 3 dimensional image. WFT can replicate features as small as a few nanometers to over 150 microns in height. WFT emboss rolls of film product from 6″ to 68″ wide with thickness of 12.5 microns to 300 microns. WFT’s Proprietary Tooling technology allows to obtain shorter job turnaround with a degree of complexity possessed by few other embossers in the world. We can produce replicated structures with nearly vertical walls for application not typically serviced by a roll to roll production process which can deliver large volumes of product at economical prices. We can design your structure, originate it, tool it for mass production, and produce rolls ready for converting. Once a structure has been replicated WFT has the capability to bond the film to a Rigid plate cut to size, all in-house. WFT is a one-stop producer for all your micro-structure replication needs.
WFT has the capability of originating many forms of microstructures. WFT have in-house Diamond Turning, Holographic, and Lithographic origination capabilities. WFT can also run customer provided micro-structures.
Tailored Micro-Diffusers (TMD®) Films
WFT produces Tailored Micro-Diffusers (TMD®) with angles that range from 0.5deg to 80deg. TMD’s are manufactured using surface relief micro-structures that are embossed from holographically recorded master tools. They allow an almost completely tailorable flux output pattern. Below are some characteristics of TMD’s.
The TMD® and UTMD product lines accomplish the purpose of traditional diffusers in direct lit and edge-lit Back Light Unit (BLU) systems. However, compared with conventional bead type diffusers, our TMD® in many cases provides the following advantages: higher brightness, better contrast and viewing angle, less thickness, less layers (such as elimination of diffuser plate and/or prism film)
TMD’s can be easily replicated onto low-cost plastic films. In large quantities, roll-to-roll mass-production techniques ensure that WFT’s TMD® costs to OEM manufacturers are well within the range of those for consumer product applications.
Prismatic Faceted Films
Prism film is well known in the display industry for adding brightness and efficiency to backlights used with LCDs. Faceted films are used to redirect light such as a Fresnel lens used to focus or spread light. In both cases the structure is made up of polished microstructure facets that act like very small prisms to bend light in certain directions.
The size ranges from a few hundred micrometers to sub-micron. They are typically originated using Diamond Turned machining methods but can also be created using Grayscale Lithography.
Diffractive Films 
Diffractive structures are typically linear or crossed microstructures that are small enough to diffract light (10 micron to sub-micron). A linear diffraction grating may be made using holographic interference. A popular film called rainbow is used in many packaging designs for an eye-catching rainbow color effect. It can also be used in a diffractive micro-flake to produce a diffractive pigment.
Another use might be a Holographic Optical Element (HOE) or a Computer-Generated Hologram (CGH). A CGH can be a stepped microstructure that forms an image. These microstructures can be originated in many ways such as Holographic interference, Grayscale Lithographic techniques, Laser, E-beam, or Ion beam etching.
Applications of Light Shaping Films
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