Radial Fresnel Lenses
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Radial Fresnel lenses are used to focus or collimate light. Applications include solar concentrators and LED lighting.

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Lens Construction

Fresnel lens structures are formed onto the surface of thin film materials using a UV embossing process to produce thin, flexible lens structures.

The lens structure is constructed with a fixed height of between 35 and 70 microns and variable pitch. Facet peak and trough precision is usually in the region of 1-2 microns.

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These lenses can then be bonded onto a PMMA support sheet if required  

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Multiple lens parquets can be produced with parquet sizes up to 900mm by 1000mm

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Optical Design and Modelling

Microsharp offers a comprehensive lens design service to develop lens designs to meet individual customers' exact specifications. Using proprietary software tools, we are able to design and model all aspects of CPV optics systems quickly and accurately.

Our design and modelling service includes the following parameters.

  • Focal length and focal spot size optimisation
  • On axis optical efficiency measurement / off axis tolerance analysis
  • Optimisation of lens structure to align performance characteristics to individual multi junction sub cell characteristics.
  • Colour Mixing
  • Secondary optics design and dimensioning and integration
  • Complete optical train development

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Lens Design Specifications

We design, develop and manufacture bespoke lenses for use in HCPV applications within the constraints given in the table below. The majority of the lenses we produce are bespoke designs and proprietary to the developing client.

We provide a comprehensive design and modelling service to ensure that each lens is optimised within the constraints set by a clients system. We can also design and model complete optical systems including secondary optical devices. 

 

 The table below outlines the typical parameters within which we design. 

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 Evaluation and development samples

Whilst most of our lens designs are proprietary to individual customers, we do have a limited range of designs that we can make availabel to clients for evaluation purposes.

Please contact us for more information