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General Applications Purpose of Fresnel Lenses

It has been shown that the image quality is reduced even if it is small; when used for projections, for this reason it is used in areas where growing of noncritical or other known lenses is not appropriate. General applications purpose of Fresnel lenses are specified as follows:

• Projection (overhead projection and projection TVs)
• Enlargement uses
• Traffic lights
• Automotive headlights
• Rear view mirror
• Optical landing systems
• Camera imaging systems
• Custom light effects

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TIR Optics

Designed around the phenomenon where light traveling from one medium to another of lesser optical density hits the interface at an angle and reflects with 100 percent of the beam energy, TIR optics, or TIR lenses, consist of a refractive lens nestled inside a reflector and are typically cone-shaped with optical efficiencies as high as 92 percent. The lens directs light from the source’s center to the reflector, which sends it out in a controlled beam. An additional surface over the assembly provides another opportunity to modify the light.

Generally injection-molded from polymers, TIR optics are sculpted to a precise beam pattern with a variety of surface treatments—such as rippling, pillowing, or polishing—to diffuse the light, widen the beam spread, or shape distribution. Injection molding, however, limits lens size and wall thickness, typically to 0.5 inch. The larger the optics, the greater the risk of shrinkage and distortion. Maintaining a higher temperature and pressure on the machines for a longer time period can reduce the risk, Shum says, but at a cost.

TIR optics capitalize on characteristics unique to LEDs. Unlike incandescents, which radiate heat outward, LEDs send heat out their base, allowing TIR optics to fit snugly over their domed top. As a result, says Chris Bailey, director of the Lighting Solutions Center at Hubbell Lighting, “LEDs afford an opportunity for the designer to extract light directly from the source and precisely direct it through key vertical and horizontal planes.”

Though prevalent in outdoor and industrial lighting, TIR optics are still gaining in indoor applications. While ideal for beam control, they don’t work for all applications, Bailey says. For example, coupling is not necessary in architectural recessed lighting, where the emphasis is on diffused illumination, low glare, and a gradient distribution.

In house, it is possible to design any desired optical system according to the specifications. An example of the original product is the design of different LEDs with varying color temperatures throughout the day. New products and new model designs will also shorten the production cycle and reduce production errors. In general, it is possible to design and provide support in the following areas:

• Reflector Design
• LED Lighting Design
• LED Panel and Projector Design
• Lens Design
• Contact Lens Design Fiber Lighting
• TV Backlight Design
• 2D-3D Optimization
• Light Pipe Design
• Illumination Design in Biomedical Applications
• Stray Light Analysis
• Spot Lighting
• Solar Lighting
• Automotive Interior and Exterior Lighting
• Military Optical Hardware Design

Optic is a science that scans the parts of the electromagnetic spectrum, called light, called ultraviolet (100-400nm), visible (400-700nm) and infrared (750nm - 1mm). All tools, devices and devices made to give direction and shape to this field light are described as optical system. They are best known for a myriad of examples of cameras, telescopes, handhelds, lighting systems, reflectors, binoculars, headlamps, periscopes, microscopes, projectors, camcorders, In order to be able to design such a system, it is necessary to have knowledge about optical design as well as basic physics and optics knowledge. In addition, today, TracePro is highly sophisticated computer software to help designers.