Fresnel lens with light-scattering preventive feature for license

Uploaded on 28/07/16

The materials provided are intended to solicit interest in our technology and do not constitute notice.

Stryker Corporation are offering a license to a novel Fresnel lens design, developed for our operating theatre lighting. Our invention preserves photons and prevents unwanted stray light artifacts. Any application that needs to achieve one of these two things would benefit from this patent. These could include applications such as solar power, automotive lighting, photography lens, and movie/video projection.

We pursued the patent because we noticed that photons were being lost as a result of the standard Fresnel lens geometry. This observation is useful for a couple of applications:

  1. Maximizing light output through photon conservation.
  2. Preventing stray light from creating unwanted artifacts.

The companies currently producing products in this space include: Diverse Optics Inc., Apollo Optical Systems, Fresnel Technologies, Knight Optical, RHJ Japan Inc.

 

Publication number Filing date Priority date Expiration date Current status Overview 
US 9,335,447 31-Oct-14 21-Nov-13 18-Dec-34 Granted Fresnel lens with light-scattering preventive feature

 

Parties interested in non-exclusive licenses or Field of Use exclusive licenses should make contact.

 

Additional materials, including some background on our development of the lens for our use in the operating theatre, are available under an NDA.

Brief description of drawings

  • FIG. 1  is a top view of a first prior art Fresnel lens. 
  • FIG. 2  is a cross-sectional view of the first prior art Fresnel lens taken along the line II-II of FIG. 1.
  • FIG. 3 is a top view of a second prior art Fresnel lens.
  • FIG. 4 is a cross-sectional view of the second Fresnel lens taken along the line IV-IV of FIG. 3.
  • FIG. 5 is a top view of a first embodiment of a Fresnel lens of the present invention.
  • FIG. 6 is a cross-sectional view of the first embodiment of the Fresnel lens of the present invention taken along the line VI-VI of FIG. 5.
  • FIG. 7 is a cross-sectional view of a second embodiment of the Fresnel lens of the present invention.
  • FIG. 8 is a top view of a second embodiment of a Fresnel lens of the present invention.
  • FIG. 9 is a cross-sectional view of the second embodiment of the Fresnel lens of the present invention taken along the line IX-IX of FIG. 8.
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