- Home
- Companies
- HOLOEYE Photonics AG
- Products
- HOLOEYE - Model LETO-3 - Phase Only ...
HOLOEYE - Model LETO-3 -Phase Only Spatial Light Modulator
The LETO-3 Phase Only Spatial Light Modulator (SLM) is a technologically advanced platform designed for high-speed phase modulation with color sequential capabilities. It utilizes a reflective Liquid Crystal on Silicon (LCOS) microdisplay with full HD resolution of 1920x1080 pixels, a pixel pitch of 6.4 µm, and a high fill factor of 93%. This device operates primarily in phase mode, employing an HDMI interface for seamless integration, allowing direct interfacing with any standard graphics card without requiring additional hardware or software. It features a color-field-sequential operation mode to coordinate with color-switchable laser or LED light sources, enhancing diffraction and light efficiency. HOLOEYE provides three LETO-3 versions tailored for different spectral ranges and application purposes, including visible, near-IR, and rapid response scenarios up to 180 Hz. The accompanying software suite enables advanced configurations and holographic image display, supporting multiple programming languages via APIs.
The LETO-3 phase only Spatial Light Modulator is based on a reflective LCOS microdisplay with full HD (1920 x 1080 pixel ) resolution. With a pixel pitch of 6.4 µm and a small interpixel gap of 0.2 µm the LETO-3 SLM provides a high fill factor of 93%.
The LETO-3 Spatial Light Modulator offers a reflectivity between 62% up to 75% (dependent on wavelength and version). The device offers diffraction efficiencies of more than 80% (16 level blazed grating) which leads to a total light efficiency of ~ 60%.
The LETO-3 SLM driver is prepared to work in color-field-sequential (CFS) mode e.g. with color-switchable LASER or LED lighting and the device features an LED-connector which can be used to synchronize the light source with the device. The driver features 4 slots with preconfigured CFS configurations for different environments which can be slected using the Configuration Manager Software.
- Display Type : Reflective LCOS (Phase Only)
- Resolution : 1920 x 1080
- Pixel Pitch : 6.4 µm
- Fill Factor : 93 %
- Active Area : 12.29 x 6.91 mm (0.55″ Diagonal)
- Addressing : 8 Bit (256 Grey Levels)
- Signal Formats : HDMI – HDTV Resolution
- Input Frame Rate : 60 Hz / 180 Hz
LETO-3 SLM – Scope of Supply
- Phase only display incl. flex cable
- Driver unit
- Device mount
- Display mount
- Power supply + cable
- USB/mini USB cable
- HDMI cable
- (CFS-light source sync cable) – optional for CFS version
- Safety instructions & quick-start guide (test polarizer inside)
- USB flash drive with software package and documentation
The LETO phase only modulator devices can simply be addressed like an external monitor using the standard HDMI interface of the graphics card. No additional software or dedicated hardware is needed to operate the SLM.
The LCOS SLM device is delivered with a GUI (Graphical User Interface) based Configuration Manger software. The Configuration Manager can be used to change geometrical settings, brightness, contrast and the electrooptical response by applying a new gamma curve or another digital drive scheme. An USB interface is used for these advanced callibrations.
In addition a HOLOEYE SLM Pattern Generator software is provided with the SLM:
- Computation of computer generated holograms (CGH) from user defined images
- Generation of SLM signals representing basic optical functions such as lenses, gratings, axicon and vortex functions
- Superposition of CGH’s with basic optical functions to combine functionalities
Besides that a special SLM Slideshow Player software comes with the device. Also an SLM Display SDK is available for download which provides APIs (Application Programming Interface) for different programming languages to show images and data/ phase arrays directly on a HOLOEYE Spatial Light Modulator:
- National Instruments LabVIEW™ 8.6 and later
- MathWorks MATLAB® R2009b and later
- Octave 5.2
- Python™ 2.7 and 3.x
- C or C++ compiler (e. g. Microsoft Visual C++ Compiler)