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Gradient Index Micro Lenses

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Overview

Gradient index micro lenses (GRIN lenses or GRIN Rod Lenses) have a radially varying index of refraction that causes an optical ray to follow a sinusoidal propagation path through the lens. They combine refraction at the end surfaces along with continuous refraction within the lens.

Ideal for laser collimating and focusing for fiber coupling
Improved aberration correction
AR coated for 630, 830, 1300, or 1560 nm
Convenient to mount

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Products

Showing 24 of 24 total products

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Compare	Model	Antireflection Coating	Diameter	Length	Pitch	Numerical Aperture	Availability	Price	Brand
LGI1300-1 Micro Lens, Plano-Plano, Gradient Index, 1.8mm, .46 NA,1300nm,0.23 Pitch $58 In Stock	LGI1300-1 Micro Lens, Plano-Plano, Gradient Index, 1.8mm, .46 NA,1300nm,0.23 Pitch	1300 nm	1.8 mm	4.42 mm	0.23	0.46	In Stock	$58	Newport
LGI1300-2 Micro Lens, Plano-Plano, Gradient Index, 1 mm, .46 NA,1300nm,0.25 Pitch $58 In Stock	LGI1300-2 Micro Lens, Plano-Plano, Gradient Index, 1 mm, .46 NA,1300nm,0.25 Pitch	1300 nm	1.0 mm	2.63 mm	0.25	0.46	In Stock	$58	Newport
LGI1300-3 Micro Lens, Plano-Plano, Gradient Index, 1.8mm, .46 NA,1300nm,0.25 Pitch $58 In Stock	LGI1300-3 Micro Lens, Plano-Plano, Gradient Index, 1.8mm, .46 NA,1300nm,0.25 Pitch	1300 nm	1.8 mm	4.80 mm	0.25	0.46	In Stock	$58	Newport
LGI1300-4 Micro Lens, Plano-Plano, Gradient Index, 2mm, .46 NA, 1300 nm,0.25 Pitch $58 Contact Us	LGI1300-4 Micro Lens, Plano-Plano, Gradient Index, 2mm, .46 NA, 1300 nm,0.25 Pitch	1300 nm	2.0 mm	5.32 mm	0.25	0.46	Contact Us	$58	Newport
LGI1300-5 Micro Lens, Plano-Plano, Gradient Index, 1.8mm, 0.6 NA,1300nm,0.25 Pitch $58 In Stock	LGI1300-5 Micro Lens, Plano-Plano, Gradient Index, 1.8mm, 0.6 NA,1300nm,0.25 Pitch	1300 nm	1.8 mm	3.76 mm	0.25	0.60	In Stock	$58	Newport
LGI1300-6 Micro Lens, Plano-Plano, Gradient Index, 1.8mm, .46 NA,1300nm,0.29 Pitch $77 In Stock	LGI1300-6 Micro Lens, Plano-Plano, Gradient Index, 1.8mm, .46 NA,1300nm,0.29 Pitch	1300 nm	1.8 mm	5.57 mm	0.29	0.46	In Stock	$77	Newport
LGI1560-1 Micro Lens, Plano-Plano, Gradient Index, 1.8mm, .46 NA,1560nm,0.23 Pitch $56 In Stock	LGI1560-1 Micro Lens, Plano-Plano, Gradient Index, 1.8mm, .46 NA,1560nm,0.23 Pitch	1560 nm	1.8 mm	4.43 mm	0.23	0.46	In Stock	$56	Newport
LGI1560-2 Micro Lens, Plano-Plano, Gradient Index, 1 mm, .46 NA,1560 nm,0.25 Pitch $56 In Stock	LGI1560-2 Micro Lens, Plano-Plano, Gradient Index, 1 mm, .46 NA,1560 nm,0.25 Pitch	1560 nm	1.0 mm	2.64 mm	0.25	0.46	In Stock	$56	Newport
LGI1560-3 Micro Lens, Plano-Plano, Gradient Index, 1.8mm, .46 NA,1560nm,0.25 Pitch $56 In Stock	LGI1560-3 Micro Lens, Plano-Plano, Gradient Index, 1.8mm, .46 NA,1560nm,0.25 Pitch	1560 nm	1.8 mm	4.82 mm	0.25	0.46	In Stock	$56	Newport
LGI1560-4 Micro Lens, Plano-Plano, Gradient Index, 2 mm, .46 NA,1560 nm,0.25 Pitch $56 In Stock	LGI1560-4 Micro Lens, Plano-Plano, Gradient Index, 2 mm, .46 NA,1560 nm,0.25 Pitch	1560 nm	2.0 mm	5.32 mm	0.25	0.46	In Stock	$56	Newport

Showing 1 to 010 of 24 entries

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Specifications

Lens Shape

Plano-Plano
Lens Material

SELFOC® radial gradient index oxide glass

Lens Type

Gradient Index Micro lens
Transmission

≥89% @ 320-2000 nm

Features

Understanding GRIN pitch

A lens is said to have a pitch of 1.0 if its length is such that a ray completes one sinusoidal period in traveling through the lens. This is analogous to a series of four thin lenses spaced two focal lengths apart from one another to form an 8 focal length long telecentric relay. Quarter pitch GRIN lenses, with an object placed near the entrance face behave much like single thin lenses positioned one focal length away from the object.

Low On Axis Aberrations

Gradient index micro lenses (GRIN lenses) have a radially varying index of refraction that causes an optical ray to follow a sinusoidal propagation path through the lens. GRIN lenses have extremely low aberrations for objects near the optical axis, making them excellent for collimating diode lasers or coupling light into multimode optical fibers.

Four Wavelength Options

The general purpose plano-plano lenses are available in four wavelength options (630, 830, 1300, and 1560 nm). Each lens is cut to the pitch length for the specified wavelength, then coated with an appropriate antireflection coating.

Object and image distance for 0.29 pitch lenses

Accessories

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Description	Compatibility	Avail.	Price
FPH-L GRIN Lens Holder, 2 mm Max, FP Series Positioner	UNIVERSAL	In Stock	$102
466A-734 Grin Lens Holder, 466A Series	UNIVERSAL	In Stock	$672
561-GR Lens Mount, Gradient Index (GRIN), 561 Series	UNIVERSAL	In Stock	$229
561-GBM Blank, GRIN Lens Mount, 561 Series	UNIVERSAL	In Stock	$188
F-925 Optical Fiber Coupler, GRIN Lens, Bare Fibers	UNIVERSAL	In Stock	$672
F-926 Optical Fiber Coupler, GRIN Lens, Polarization Preserving Fibers	UNIVERSAL	In Stock	$770
F-92-C1 Optical Fiber Coupler, GRIN Lens, Connectorized Fibers	UNIVERSAL	In Stock	$638