Transmissive Spatial Light Modulator
Spatial light modulator (SLM) is a kind of device that can load information on one-dimensional or two-dimensional optical data field, so as to effectively use the proper velocity, parallelism and interconnection ability of light. These devices can change the amplitude or intensity, phase, polarization state, and wavelength of light distribution in space, or convert non coherent light into coherent light, under the control of time-varying electric driving signals or other signals. Due to its nature, it can be used as on construction units or key components in systems such as real-time optical information processing, optical computing, and optical neural networks.
The transmissive liquid crystal spatial light modulator is composed of an active matrix type liquid crystal board of a thin film transistor (TFT) and its accompanying driving circuit. The LCD board is also integrated with some driving circuits, making the driving method more stable and reliable. It can be easily transmitted with the standard interface of the computer when matched with the driving control. So as to achieve the goal of computers are used to conveniently control the amplitude or phase changes of spatial light.
Model and Parameters 1:
Model | TSLM029-A | TSLM023-A | TSLM017-A | TSLM016-A |
Modulation Type | amplitude type | Amplitude phase type | amplitude type | amplitude type |
LCD Type | TN Type TFTLCD | TN Type TFTLCD | TN Type TFTLCD | TN Type TFTLCD |
Pixel Count | 1024×768 | 1024×768 | 1024×768 | 1024×768 |
Pixel Size | 18μm | 26μm | 36μm | 26μm |
Image Size | 0.9' 18.3mm×13.7mm | 1.3' 26.4mm×19.8mm | 1.8' 36.6mm×27.4mm | 1.3' 26.4mm×19.8mm |
Optical Utilization Rate | 26%(632nm) | 26%(632nm) | 36%(632nm) | 26%(632nm) |
Contrast Ratio | 400:1 | 400:1 | 400:1 | 400:1 |
Opening Rate | 54% | 67% | 70% | 67% |
Spectral Range | 380nm-1200nm | |||
Surface Reflectance | Ravg＜1%(380nm-750nm or 750nm-1200nm) | |||
Projected Wavefront | λ/3-λ/5 | |||
Damage Threshold | 2W/cm2 | |||
Response Time | 17ms on，30ms off | |||
Supporting Drive Controller Parameters and Functions | Data Interface | VGA(basic)，DVI(optional)，USB(optional) | ||
Image Switching Frequency | 60HZ | |||
Pixel Clock Frequency | 66MHZ | |||
Parameter Initialization Interface | RS-232 Serial port | |||
Major Function | Equipped with software to modify the contrast, brightness, phase, up/down, left/right inversion of the modulator, image position, gamma correction through a serial port. | |||
Modify the contrast and brightness of the modulator. | ||||
Set image switching frequency. | ||||
Polarizer Configuration Characteristics | Deviation | Same incident direction as required for liquid crystal light valve. | ||
Analyzer | The incident direction is required to be perpendicular to the liquid crystal light valve. | |||
Model and Parameters 2:
Model | TSLM14U-A | TSLM16U-A | TSLM07U-A |
Modulation Type | Amplitude Type | Amplitude Type | Amplitude Type |
LCD Type | TN Type TFTLCD | TN Type TFTLCD | TN Type TFTLCD |
Pixel Count | 2048×1536 | 1920×1080 | 1920×1080 |
Pixel Size | 14μm | 19μm | 8.5μm |
Image Size | 1.4' 28.7mm×21.5mm | 1.6' 36.5mm×20.5mm | 0.74' 16.3mm×9.18mm |
Optical Utilization Rate | 30%(632nm) | 30%(632nm) | 20%(632nm) |
Contrast Ratio | 400:1 | 380:1 | 600:1 |
Opening Rate | 64.7% | 62.2% | 57% |
Response Time | 7ms on，25ms off | 7ms on，25ms off | 7ms on，20ms off |
Spectral Range | 380nm-1200nm | ||
Surface Reflectance | Ravg＜1%(380nm-750nm或750nm-1200nm) | ||
Projected Wavefront | λ/3-λ/5 | ||
Damage Threshold | 2W/cm2 | ||
Supporting Drive Controller Parameters and Functions | Data Interface | DVI(basic)，USB（optional） | |
Image Switching Frequency | 60HZ | ||
Pixel Clock Frequency | 140MHZ | ||
Parameter Initialization Interface | RS-232 Serial Port | ||
Major Function | Equipped with software to modify the contrast, brightness, phase, up/down, left/right inversion of the modulator, image position, gamma correction through a serial port. | ||
Modify the contrast and brightness of the modulator | |||
Set image switching frequency | |||
Polarizer Configuration Characteristics | Deviation | Same incident direction as required for liquid crystal light valve | |
Analyzer | The incident direction is required to be perpendicular to the liquid crystal light valve | ||
Product advantages
system configuration
Using imported high-temperature polycrystalline silicon TFT
Excellent transmission wavefront characteristics (each liquid crystal light valve is strictly inspected by an interferometer)
High optical efficiency
Simple optical structure
No mechanically movable parts
Flexible system configuration
Quiet, low vibration operation
All solid-state device structure
Plug and Play Easy Installation
Safe low voltage operation
Friendly graphical interface
Full user programming
Select suitable LCD light valves according to customer needs;
Select the matching drive controller;
A pair of orthogonal 99.99% polarizers with polarization directions (but without wavefront accuracy, not suitable for phase modulation);
Connecting components: 1.5m serial port cable/1.5m video cable;
Control software based on Windows XP/Windows 2000 system;
Switching power supply: 16V1A;
User manual for spatial light modulator, data disc for control software