Insect inspired imaging for ultra-compact vision systems

Technical concept

  • Microlens array on front side of thin glass substrate with a thickness according to focal length of the microlenses
  • Integrated on an optoelectronic image sensor (CCD, CMOS) with different pixel pitch compared to the microlens array
  • Pitch-difference enables different viewing directions of each optical channel
  • Channel-wise adapted microlenses for correction of aberrations
  • Optical isolation of channels for the suppression of optical cross-talk


Exemplary parameters

  • Optical system length 300 μm
  • 150 x 100 channels / pixels
  • Channel size 50 μm
  • F/# = 2 to 4
  • Field-of-view 80° x 65°
  • Pixel size 3μm


Wafer-scale technology

  • Origination of lens arrays by reflow of photoresist or laser lithography
  • Structuring of aperture arrays on thin glass substrate (lithography)
  • UV-molding of lens arrays in inorganicorganic hybrid polymer
  • Dicing, assembly with CMOS-imager


Our work

  • Optical design, prototyping and characterization of microoptical imaging systems for custom-specific applications
  • Provide imaging solutions for tightest working spaces


Typical applications

  • Machine vision, Sensors
  • Security and surveillance
  • Medical imaging