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Spatial light modulator (SLM)

A spatial light modulator (SLM) is a device for forming an optical image corresponding to an electrical or optical input. Spatial light modulators (SLMs) have found numerous applications in the areas of optical information processing, projection displays, video and graphics monitors, televisions, and electrophotographic printing. SLMs modulate incident light in a spatial pattern to form an image corresponding to an electrical or optical input. The incident light may be modulated in its phase, intensity, polarization, or direction. An SLM typically includes an area or linear array of addressable picture elements (pixels). A reflective spatial light modulator is typically comprised of a one or two-dimensional array of addressable picture elements (pixels) capable of reflecting incident light. Source pixel data is first processes by an associated control circuit, then loaded into the pixel array, one frame at a time. Video display systems based on spatial light modulators (SLMs) are increasingly being used as an alternative to display systems using cathode ray tubes (CRTs). SLM systems provide high resolution displays without the bulk and power consumption of CRT systems. A liquid crystal on silicon (LCOS) display is one kind of SLM that combines the technologies of semiconductors and LCDs. The LCOS display can provide images with high resolution and high lightness. Digital micro-mirror devices (DMDs) are a type of SLM, and may be used for projection display applications. The digital micromirror device (DMD) is a monolithic single chip integrated circuit SLM and is constituted of a high-density array of movable micromirrors.

Spatial light modulator (SLM) product listings

HEO 1080 P: phase only spatial light modulator

The HEO 1080 P Phase Only Modulator is based on a reflective LCOS microdisplay with 1920 x 1080 pixel resolution. Applications range from holography, lithography, optical metrology, interferometry, optical tweezers, wave front corrections to phase shifting applications.

LC-R 2500 spatial light modulator

The LC-R 2500 Spatial Light Modulator is based on a refelctive LCoS microdisplay with a resolution of 1024 x 768 pixel. The advantages of the LC-R 2500 are the good phase shifting properties in the visible. Depending on the input polarisation, this spatial light modulator can be used for both, amplitude or phase modulation.

LC-R 1080 spatial light modulator

The LC-R 1080 spatial light modulator is based on a reflective LCoS microdisplay with a resolution of 1920 x 1200 pixel. The LC-R 1080 offers the highest resolution on the market with a very small pixel pitch of only 8.1 µm. Due to the special Brillian high contrast mode, the display features incredible intensity ratios even for IR wavelengths.

LC-R 720 spatial light modulator

The LC-R 720 spatial light modulator is based on a reflective LCoS microdisplay with a resolution of 1280 x 768 pixel. Due to the high image frame rate of 180 Hz and the short response time (< 3 ms) the highest potential of the LC-R 720 Spatial Light Modulator are high speed applications such as one panel color sequential projection.

LC 2002 translucent spatial light modulator

The LC 2002 is an easy-to-use spatial light modulator system based on a translucent liquid crystal microdisplay with a max. resolution of 800 x 600 pixel. It can be used for phase and amplitude modulation. The compact design and the transmissive display make implementation into your setup very easy. Versions with higher resolution (e.g. XGA) are available on board level.

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Spatial light modulator (SLM)