GRIN Lens Information

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Example index of refraction profile of a 2mm diameter lens.

GRadient INdex (GRIN) lenses use a non uniform index of refraction to shape light instead of surface curvature as with standard lenses. Our system uses a cylindrical GRIN lens which is implanted within 200um of the structure of interest. For a given GRIN lens, its focusing property can be adjusted by changing the pitch of the lens which is directly related to the lens length.

  • Advantages of GRIN lenses
    • Extremely small to zero working distance
    • Optical properties tune-able by changing lens length
    • Affordable
    • Small size (down to 0.5mm in diameter)
    • Compatible
  • Disadvantages of GRIN lenses
    • No optimal index of refraction profile for imaging applications
    • The majority of commercially available GRIN lenses are not optimized for imaging applications (discussed below)
    • People have experienced supply issues from some suppliers (discussed below)

GRIN Lens Optics

GRIN Lens Issues

GRIN Lens Suppliers