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GRIN Lens

GRINTECH is one of the leading manufacturers of gradient index (GRIN) micro-optic lenses and lens systems based on more than 20-years of experience.
GRINTECH delivers medical imaging and biophotonic technology, optical metrology and sensor technology to growing markets.
GRIN-lenses are miniaturized lenses having extraordinary good optical performance and flat optical surfaces.
The optical power of GRIN-lenses is achieved by a refractive index (GRadient INdex) profile fabricated by a non-toxic silver or lithium ion exchange process in glass. Our unique rod micro lenses have typical dimensions from 250 µm to 2 mm.
With diffraction-limited numerical apertures up to 0.45, the flat optical surfaces enable an easy assembly to micro-optical lens systems tailored to your specific requirements.

● GRIN Lens

● Rod lens for fiber coupling and beam shapping of laser diode
      
   • Non-toxic silver-based glass material
   • Plane surfaces
   • Standard diameters 0.5 / 1.0 / 1.8 / 2.0 mm
   • numerical apertur 0.5

>> On request:
   • working distance and lens lenght deviating from the standard
   • Design wavelength deviating from the standard
   • Antireflection coating
   • 8° angeld fecet
   • other diameter 0.25 mm, 0.35 mm, 0.6 mm und 0.85 mm

● Rod lens - NA 0.2
      
   • standard diameter 0.5 / 1.0 / 1.8 mm
   • numerical aperture 0.2

>> On request:
   • working distance and lens length deviating from standard
   • design wavelength deviating from standard
   • other diameter 0.25 mm and 0.35 mm

● Rod lens - NA 0.2 - High performance collimation
      
   • standard diameter 1.0 / 1.8 mm
   • numerical aperture 0.2

>> On request:
   • working distance and lens length deviating from standard
   • design wavelength deviating from standard

● Cylindrical lens for beam shaping of laser diode
      
   • GRIN lenses for the fast axis collimation of high power laser diode bars, high brithness diodes and other beam shaping
   • Plane surfaces
   • thickness 1.0 mm
   • numerical apertur 0.5

>> on request:
   • working distance and lens length deviating from standard
   • lens width deviationg from standard
   • antireflection coating

● Objective lens for endoscopy
      
   • Non-toxic silver -based glass material
   • plane surfaces
   • low chromatic aberration
   • numerical aperture 0.5
   • Certification: Biological safety (EN ISO 10993-1)

>> On request:
   • working distance and lens length deviation from standard
   • antireflection coating
   • combination with prism and beam splitter cube
   • aperture and field stops

● GRIN Lens and Lens systems for imaging optics

● Objective lens for endoscopy
      
   • Non-toxic silver -based glass material
   • plane surfaces
   • low chromatic aberration
   • numerical aperture 0.5
   • Certification: Biological safety (EN ISO 10993-1)

>> On request:
   • working distance and lens length deviation from standard
   • antireflection coating
   • combination with prism and beam splitter cube
   • aperture and field stops

● Lens systems for endoscope
      
   • Combine a GRIN objective lens, a GRIN relay lens and a GRIN eyepiece
   • Standard diameter 0.35 / 0.5 / 1.0 / 2.0 mm
   • Combination with prism to change the direction of view
   • Two design options – more information you can find in the datasheet

● GRIN Lens Systems for Medical Application

● GRIN needle endomikroscopes for fluorescence microscopy
      
Brain Imaging – one of the most enabling applications of GRINTECH micro-optics
Endomicroscopy using GRINTECH lenses and assemblies allows an in-vivo imaging access to deep tissue regions in the brain, especially in non-humans. It helps to understand disease formation and progression on a cellular level of the tissue.
   • developed for deep tissue imaging (epifluorescence)
   • offered as GRIN Singlets with NA 0.5 on both sides
   • offered as GRIN Doublets with object side NA of 0.5 and image side NA of 0.19
   • GRIN-Systems offered with different lengths

● GRIN needle endomikroscopes for 2-photon microscopy
      
Brain Imaging – one of the most enabling applications of GRINTECH micro-optics Endomicroscopy using GRINTECH lenses and assemblies allows an in-vivo imaging access to deep tissue regions in the brain, especially in non-humans. It helps to understand disease formation and progression on a cellular level of the tissue.
   • developed for deep tissue imaging (Multi-Photon Microscopy)
   •offered as GRIN Singlets with NA 0.5 on both sides
   • offered as GRIN Doublets with object side NA of 0.5 and image side NA of 0.19
   • GRIN-Systems offered with different lengths

● Objective with high N.A. for fluorescence - and 2-photon microscopy
      
   Objectives for Fluorescence-Mikroscopy:
   • numerical aperture - object = 0.80 / 0.80
   • numerical aperture - imaged = 0.18 / 0.415
   • magnification 4.65x / 1.92x
   • recommended excitation wavelength 488 nm
   • mounted in stainless steel holder

Objectives for 2-Photon-Microscopy:
   • numerical aperture - object = 0.80 / 0.80
   • numerical aperture - imaged = 0.18 / 0.415
   • magnification 4.8x / 1.92x
   • recommended excitation wavelength 800 - 900 nm
   • mounted in stainless steel holder

● Objective with high M.A. achromatic version for fluorescence or 2-photon microscopy
      
   Objectives for Fluorescence-Mikroscopy:
   • numerical aperture - object = 0.8 / 0.8
   • numerical aperture - image = 0.18 / 0.5
   • magnification 4.65x / 1.70x
   • recommended excitation wavelength 488 nm
   • mounted in stainless steel

Objectives for 2-Photon-Mikroscopy:
   • numerical aperture - object = 0.8
   • numerical aperture - image = 0.18
   • magnification 4.76x
   • recommended excitation wavelength 800 - 900 nm
   • mounted in stainless steel

● High N.A. objective for flourescencs and 2-photon microscopy with chomatic and field correction
      
   • compared to the previous versions with significantly increase of the usable field of view and broader chromatic
     correction
   • higher confocal sensitivity
   • numerical aperture - object = 0.70 - 0.75
   • numerical aperture - image = 0.32 / 0.16
   • magnification 2.2x - 2.3x / 4.5 x
   • mounted in stainless steel

● GRIN Lens Systems for Laser Diode Beam Shaping

● Laser-optic Line Generator
      
   • wavelength: 660 nm
   • size: Ø 6.43 mm x 10.50 mm / weight 0.9 g
   • line divergence (fan angle): ± 10°, ± 15°, ± 20°
   • focal distance: 80mm – infinity, Gaussian shape
   • line width in focus : FWHW/Distance = 0.60 µm/mm
   • mounted in anodised aluminium

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