LSR-OEM0 pages

Extended datasheet: LSR-OEM Series
Laser speckle reducer
Update: 30.06.2015

Copyright © 2015 Optotune

Miniaturized Laser Speckle Reducer
OEM Series

Speckle noise from a laser-based system is reduced by dynamically diffusing the laser beam. A diffuser is
bonded to a thin elastic membrane, which includes four independent electo-active polymer electrodes that
induce a circular oscillation of the diffuser in x- and y-direction. The OEM Series provides a minimal housing for
easy integration and can be supplied with or without control electronics. Two sizes are available: the LSR-5-17
and the LSR-10-22 exhibiting a clear aperture of 5 mm and 10 mm, respectively. The following table outlines
the specifications of two OEM versions of Optotune’s LSR. The diffusion angle can be adapted on demand.

Mechanical specifications
Clear aperture
External dimensions (WxHxD)
Weight (LSR only / including electronics)

LSR-5-17
5
17x17x3.8
1.44/2.50

LSR-10-22
10
22x22x3.8
2.18/3.24

mm
mm
g

5
310
75

5
310
120

VDC
mW
pF

6°/12°/17°/24°
see figures 2&3
>300
~300
~300

6°/12°/17°/24°
see figures 2&3
>300
~180
~400

W/cm2
Hz
µm

[-40,+85]
[-30,+85]

[-40,+85]
[-30,+85]

°C
°C

Electrical specifications
Power supply (micro-USB interface) 1
Power consumption (with std. electronics)1
Electrode capacitance

Optical specifications
Diffusion angle (FWHM)
Transmission spectrum2
Damage threshold
Oscillation frequency
Oscillation amplitude (peak to peak)

Thermal specifications
Storage temperature
Operating temperature

Figure 1 (a-c) show the effect of the LSR-5-17 on a laser spot (= 650 nm, P = 5 mW):

(a) Without diffuser
(b) with diffuser (OFF)
(c) with diffuser ON
Figure 1: CCD images of a laser spot without and with LSR-5-17 on.
Attention: Do NOT use pressurized air to clean the LSR as this might cause the oscillating diffuser to irrevocably stick to the cover glass.
1

100-230 VAC to 5 VDC micro-USB power supply available; Optimized electronics require about 40 mW
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as to the reliability, completeness or accuracy of this paper.

Optotune AG | Bernstrasse 388 | CH-8953 Dietikon | Switzerland
Phone +41 58 856 3000 | www.optotune.com | info@optotune.com