Liquid Crystal Operating Principles
Meadowlark Optics DOWNLOAD PRINCIPLES Liquid Crystal Variable Retarders are solid
High-Speed LCVR, Optical Head Only, Two-Inch
Click image to enlarge.
Previous
Next
$4,180.00
Key Features
- Sub-millisecond speeds
- Standard LC Drive Schemes
- Includes heated housing
- Precision non-mechanical retardation control
Common Specifications
Retarder Material: Nematic liquid crystal
Substrate Material: Optical quality synthetic fused silica
Typical LC Rise Time (10 – 90 %): 50 µs @ 532 nm
Typical LC Fall Time (90 – 10 %): 500 µs @ 532 nm
Retardance: 0 to λ/2
Transmitted Wavefront Distortion (P – V at 632.8 nm): ≤ λ/4
Surface Quality: 40 – 20 scratch-dig
Beam Deviation: ≤ 2 arc min
Reflectance (per surface): ≤ 0.5 % at normal incidence
Operating Temperature (Internally Heated): 50 °C
Recommended Safe Operating Limit:
500 W/cm², CW
300 mJ/cm2, 10 ns, visible
Filters Sort results
Reset Apply
No results found. Try again. For customers outside of the United States, please see the product data sheet for specifications and then contact us for a custom quote.
High-Speed LCVR, Optical Head Only, Two-Inch
Our precision HS LCVR requires unique fabrication and assembly steps. We construct these retarders using optically flat fused silica windows coated with our transparent conductive Indium Tin Oxide (ITO). Our ITO coating is specially designed for maximum transmission over the operating wavelength.
See Details
Response Time
Meadowlark’s HS LCVR utilizes unique surface alignment procedures coupled with precise temperature control and a new drive scheme to achieve the fastest possible switching times. The HS LCVR reaches switching speeds of ~ 50 microseconds to switch from one-half to zero waves (low to high voltage) and ~ 500 microseconds to switch from zero to one-half wave (high to low voltage) at 532 nm.
Meadowlark Optic’s HS LCVR must be paired with a D5020-HS digital interface. The D5020-HS will keep the HS LCVR at optimum temperature and voltage ranges for best performance. The driver features 4 separate drive schemes and has the ability to drive two HS LCVR cells at the same time.
SPECIFICATIONS | |
Retarder Material | Nematic liquid crystal |
Substrate Material | Optical quality synthetic fused silica |
Wavelength Range | 450 – 700 nm |
Typical LC Rise Time (10 – 90 %) | 50 µs @ 532 nm |
Retardance | 0 to λ/2 |
Transmitted Wavefront Distortion | ≤ λ/4 |
Surface Quality | 40 – 20 scratch-dig |
Beam Deviation | ≤ 2 arc min |
Reflectance (per surface) | ≤ 0.5 % at normal incidence |
Operating Temperature (Internally Heated) | 50 °C |
Recommended Safe | 500 W/cm², CW 300 mJ/cm2, 10 ns, visible |
Ordering Information – Contact Us or Buy Online
ORDERING INFORMATION | |||
Diameter, D (in.) | Clear Aperture, CA (in.) | Thickness, T (in.) | Part Number |
2.00 | 0.70 | 0.75 | HLC – 200 – VIS |
DRIVER SPECIFICATIONS | |
Fundamental Drive Waveform | 10 kHz AC square wave |
Modulation Amplitude | 0 – 20 V rms |
DC Offset | < 5 mV |
Communication Interface | USB |
Output Channels | 2 Cells |
Modulation Waveforms | Chop, Gate, Steady State, Idle |
CE Compliance | Compliant |
Filters Sort results
Reset Apply
Filters Sort results
Reset Apply
Graphs & Figures
Protected: The CHROMIS Polarimetric Modulator
There is no excerpt because this is a protected post.
Protected: The CHROMIS Modulator Case Study
There is no excerpt because this is a protected post.
The Power and Limitations of Polymers and Liquid Crystals for Polarization Control
The Power and Limitations of Polymers and Liquid Crystals for
