Fresnel Lens
FRL
Catalog
Code
W3184
The lens of short focal length, which is thicker, has been made to a step structure and to a thin
plate shape with the characteristics of the lens.
It can be used as a substitute for the lens for a loupe and LED light.
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stable.
There are four focal lengths offered from 5mm to 20mm.
Compared with the lens of the same focal length, it is lighter and lens will not protrude from the edge of holder.
Application
Systems
Optics &
Optical
Coatings
OptoMechanics
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Material
Acrylic CLAREX
Refractive Index
n=1.49
Focal Length Tolerance
±10% of focal length (in a clear aperture)
Bases
* CLAREX is a registered trademark of Nitto Jushi Kogyo Co., Ltd..
Guide
▶This product is available with different focal lengths and sizes that
are not listed on-line or in our catalog. Please contact our Sales
Team with your requests.
Manual
Stages
Actuators &
Adjusters
Motoeized
Stages
Attention
▶There is a direction to the Fresnel lens. Surface that is processed is
equivalent to convex.
▶When used in laser, since diffracted light is generated in the step
structure, some of the light will also leaked around the focused spot .
▶Characteristics as the lens is obtained in the range of φ50mm, but it
is not guaranteed the accuracy of the focal length out of the scope of
the clear aperture.
▶When rubbing strongly the processed surface of the fresnel lens,
performance may be degraded. Please do not touch directly the
surface.
▶When exposed to high temperature of 80°C or more, it may be
deformed and performance can be severely degraded.
▶Please do not use organic solvents such as acetone and chloroform
which will dissolved and damage the step structure.
▶([[OL[PTLVMKLSP]LY`P[PZKLSP]LYLK^P[OHWYV[LJ[PVUZOLL[HMÄ_LK[V
the surface. Please remove this protective sheet before using.
Schematic
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Outline Drawing
(in mm)
Light Sources &
Laser Safety
Index
Guide
Mirrors
Beamsplitters
Polarizers
Lenses
Multi-Element Optics
ò
Filters
Prisms
Substrates/Windows
ò
Optical Data
—
Maintenance
Selection Guide
Plano Convex
Lenses
Plano Concave
Lenses
Biconvex Lenses
Biconcave Lenses
Kit
Reasonable Lens
Cylindrical
Others
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Focal length
[mm]
Prism pitch
[mm]
Clear Aperture
[mm]
FRL-50S-05P
5
0.05
φ10
FRL-50S-10P
10
0.05
φ20
FRL-50S-15P
15
0.05
φ30
FRL-50S-20P
20
0.08
φ40
Part Number
WEB http://www.sigma-koki.com/english/
E-mail international@sigma-koki.com
TEL +81-3-5638-8228 FAX +81-3-5638-6550
B153
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