LED Light Management
Written by Microsharp
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LED's are becoming increasingly common in lighting unit design. The offer high efficiency and extended product lifetime. However because they are high brghtness, point light sourcesthey present a number of optical challenges to lighting designers including glare control, beam angle control, and producing large area units with homogeous light output.

Microsharp has extensive experience of developing solutions for optical challenges gained in a number of complimentary fields including Display unit and back light design.

We can provide consultancy and optical design input into the process of  new unit design. We can also develop bespoke optical structures to meet specific customer needs that can provide you with a clear  advantage in an increasingly competitive marketplace.

 

 

 

We also produce a number of films that are used to better manage LED light sources in luminaire design, including...

Lenticular Diffusers.

Used to homogenise LED strip lights

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Light Control Film.

This film has the unique charatcteristic of being either reflective or transmissive depending on the angle that lights hits the film. It is used to produce units with large area, homogenised light output with high efficiency.

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 Large area luminaire using Light Control Film and LED strip array                                 Light Control Film used with reflective diffuser to produce a large linear downlight.

 

 

Light Turning Film.

Used to alter output beam angle in one direction.

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Light Deflecting film.

Uses TIR to deflect light through  90 degrees.

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Fresnel lenses.

Used to narrow beam angle

AppsLEDRadialFresnel

 

 

Microlens arrays.

Used to remove the effects of chromatic abberation and soften beam edges

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Multiple Film Example 

The following example shows how a combination of films can be used to create a specific solution. In this case the required output is a beam which is oval in shape and offset to one side. A micro prism film is also added to soften the beam edge and reduce the effects of chromatic aberration.

  

Film

Function

Light turning film

Turn the direction of the beam at a certain angle

Radial Fresnel Lens

Narrow the beam angle in all directions

Linear Fresnel Lens

Narrow the beam angle in one direction

Diffuser

Soft the edge and mixing the colour

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