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Cristal Materials Corporation
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  5. NOVAXIL - Silica Flyeye Lenses

NOVAXIL - Silica Flyeye Lenses

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NOVAXIL™ Silica Flyeye Lens, double-sided structure integrated molding, high temperature resistance and blue light resistance. Flyeye Lens, or Lens Array, is an array collection of a pair of lenses with overlapping optical axes. The light focused by the first lens is concentrated on the second lens, and the principle of multiple superposition of light to achieve the function of uniform light. The flyeye lens is often used in the projection system of the DLP platform, and it provides an uniform illuminating light source for the DMD panel after collocating with the condenser lens. The flyeye lens has the advantage of being small in size, and is very suitable for micro projectors and 3D printers with limited mechanical size. The flyeye lens is potentially to be used in automotive head-up-display (HUD) for better convenient living experience.

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  • High purity silica glass
  • One-piece double-sided molding
  • Precise alignment of the optical axis
  • Microstructured array
  • Minimize dead space
  • Competitive price
  • ISO certified production process

Due to the high threshold of manufacturing process required for flyeye lenses, the industry generally uses two single-sided flyeyes to align with each other as the mainstream for mass production. Cristal Materials provides a solution to such an issue with NOVAXIL™ double-sided silica flyeye lenses.

The unique nano sol-gel process of Cristal Materials realizes the double-sided molding of NOVAXIL™ silica flyeye lenses, which are extremely small cell units and minimized dead zone areas under the premise of integral molding of components. Integration of hundreds or even thousands of microstructured cells in a small area provides a solution for high-lumen projector with minimized efficiency loss.


In the fast developing laser light source system in recent years, the fluorescent wheel cannot withstand the high intensity energy of the blue light laser, which is usually failed by reliability problems. At this time, the tiny structure of the diffuser is often used to disperse the laser spot.

Simulation of the spot of the laser light source passing through the diffuser

However, the optical characteristics of the diffuser are Gaussian distribution, and the diffused light spot is circular, and the energy conversion rate and energy utilization rate are not as good as that of the Micro Lens Array. Therefore, trends in the development of high lumen projectors are moving toward microlens array designs.

Simulation of the spot of the laser light source passing through the flyeye lens

From the structural simulation analysis of the laser light source projected on the phosphor wheel, microstructured flyeye lenses can effectively bring down the power density of the expanded beam spot. The flyeye lenses improve the uniformity of the energy distribution, and reduce the thermal decay of the phosphor particles. Enhanced phosphor conversion rate benefits as a positive result because of lower power density on the phosphor. In addition, the rectangular light spot shaped by the flyeye structure improves even further the energy utilization efficiency, and significantly improve the brightness performance of the light source system.

Comparison of power distribution while laser light source penetrates different structural surfaces

NOVAXIL™ microlens array flyeye could reach 0.3 mm cell size with minimized dead zone width not exceeding 0.03 mm. So that the laser light source can expand and homogenize the beam , and at the same time organize the light spot into a rectangular light type commonly used in projection systems . NOVAXIL™ is a high purity silica material that does not absorb any visible spectrum, and withstand high intensity laser light sources, especially suitable for high brightness laser projectors (above 2,000 lumens).