- 옵틱스 | Optics > Laser Speckle Reducers
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Laser speckle reducers (LSR) Optotune's laser speckle reducers are nothing other than moving diffusers. But the way they are actuated is absolutely unique. Two innovative technologies are offered, these being Electro-active polymer LSR’s, and Reluctance force LSR’s. |
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Product Info
Electro-active polymer LSR
With its launch in 2011, Optotune is the first to commercialize electro-active polymers (EAPs) in the field of optics. The basis of this approach is a thin, elastic membrane that carries a lightweight diffuser in its center and four electrodes surrounding it. Actuated at a 90° phase shift, the electrodes induce a circular oscillation of the diffuser in x- and y-direction. The ultra-compact form factor, minimal weight and the absence of noise and vibrations make this technology particularly attractive for hand-held devices.
Reluctance force LSR
Launched in 2016, the reluctance force LSR is particularly suitable for applications that require large format glass diffusers. The basis of this approach is a single thin steel structure that is brought into resonance by pulsing an actuating coil with current, which generates a strong reluctance force. Thanks to a high q-factor large amplitudes in the range of 800um are achieved at low power consumption even for heavy glass diffusers.
The following table summarizes the main specifications of Electro-active polymer, and Reluctance force LSR's:
| Specification | Electro-active polymer LSR | Reluctance force LSR |
|---|---|---|
| Clear aperture | 5 or 10mm | 18.5x18.5mm |
| Diffuser | Optotune polymer | Glass or polycarbonate |
| Transmission | Up to 93% | Up to 98% |
| Oscillation type | 2D (circular) | 1D (linear) |
| Oscillation amplitude | 300-400um | 800um |
| Resonant frequency | 300 or 180Hz | ~120Hz (depends on diffuser weight) |
| Weight | 3g | 11g |
| Vibrations | None | Low (depends on mechanical mount) |
| Cover glasses | Required | None |
| Electronics | 5 VDC (EAP is pulsed with 300V) | 5 VDC (coils are pulsed with current) |
| Operational lifetime | 2’000 hours | >40'000 hours |
Products:
electro-active polymer LSR’s
Standard Version |
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OEM Version |
