Gradient Index Plano Microlenses0 pages

OPTICAL COMPONENTS

Gradient Index Microlenses

Spherical Lenses
Cylindrical Lenses

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Lens Kits

Cylindrical shape is easy to mount,
easy to align
Available with both plano and
convex end profiles
Available for popular visible and IR laser wavelengths
Perfect solution for optical data transmission applications
Also available with the focal plane falling outside the lens for non-contact use

Achromatic Doublets
Multi-Element
Micro Optics
Mirrors
Prisms
Substrates & Windows

Optical glass with a refractive index gradient provides a very efficient and simple way to
produce high quality imaging lenses. The material used in these microlenses is Selfoc®.
This material has a radial index gradient which causes focusing to occur within the material.
The index variation is defined by and is normally specified by the constant √ A. The simplest
form of gradient index lens is a simple cylinder of Selfoc®. Collimated light incident on
one end of the lens will be focused as it travels along the length of the cylinder. These
microlenses are particularly useful for fiber and diode coupling since they can be mounted
in close proximity to the source. They are ideal for use in optical data transmission. We
offer gradient index microlenses with plano end faces and also in a convex configuration
for greater imaging power. The convex lenses have a spherical radius on one end only.
Normally these lenses are a quarter pitch so that they focus a collimated input at the remote
face of the lens. However, we also offer lenses having slightly less than 1/4 pitch so that
they focus just outside the lens. This is often more convenient since contact with the source
or detector may be physically impossible. Two different numerical apertures are offered,
0.46 and 0.6. These lenses are wavelength specific. They are supplied for the wavelengths
633, 830, 1300 and 1560 nm and are Anti-Reflection coated for these wavelengths. They
will work at other wavelengths but their focusing characteristics will vary from the published
figures and the coatings will not be optimized.
1 pitch
1/4 pitch

Beamsplitters
Polarizers
Filter & Apertures

Specifications
& Tolerances
Diameter: ±0.02mm
Length: +0, -0.04mm
Parallelism: ≤10arcmin
Index gradient:
±0.75%
Clear aperture:
70% of diameter
Material: Doped
borosilicate glass
Coating: NMAR
V-coat

LIGHT PATH THROUGH GRADIENT INDEX MATERIAL

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ORDERING
&
TECHNICAL SUPPORT

(949) 851-5881
FAX (949) 851-5058
E-MAIL

sales@optosigma.com
WEB

www.optosigma.com
focal point
GRADIENT INDEX CONVEX MICROLENS

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