HOLOEYE Photonics

HOLOEYE Photonics
Information
Industry	Photonics and display components
Headquarters	Berlin, Germany
Products	Spatial light modulators, LCOS microdisplays, diffractive optical elements
Website	holoeye.com

HOLOEYE Photonics is a German supplier of photonic components, operating as HOLOEYE Photonics AG in Berlin. Its products include spatial light modulators (SLMs), liquid crystal on silicon (LCOS) microdisplays, and diffractive optical elements. It also provides custom optical and electronic development services.

Its documented XR uses include components for near-eye display research and projection development. Independent research teams have used HOLOEYE modulators to reconstruct images with optical depth, investigate foveated display architectures, and demonstrate color computer-generated holography (CGH). These uses concern components within experimental optical systems.

Company and history

The company's current history dates its foundation to 1999. Its website identifies Sven Krueger as CEO and one of its founders. The legal notice places the business in Berlin-Adlershof, and the European Commission's REALHOLO project record independently identifies HOLOEYE Photonics AG as a German participant with a Berlin address.

The following milestones are the manufacturer's published chronology.

Date	Documented development
2000	Introduction of the LC 2002 commercial SLM.
2006	Introduction of the PLUTO HD-resolution SLM platform.
2016	Introduction of the GAEA 4K-resolution SLM platform.
2023	Introduction of the analog ERIS phase-only SLM.
January 2024	HOLOEYE announced the acquisition of assets from Jasper Display Corporation's LCOS technology portfolio, including backplane technologies and hardware inventory. The announcement connected these assets to expansion of the LETO and GAEA platforms and support for former Jasper SLM customers. It described an asset acquisition rather than acquisition of the entire company.

Distinction from HOLOEYE Systems

HOLOEYE Systems, Inc. is a separately identified US business. Its history states that HOLOEYE Photonics opened a North American sales office in 2004 and that Systems was established in 2005 as an independent US entity to develop integrated systems. That older history gives 1998 for the German company's foundation, while the current Photonics history and its January 2024 announcement give 1999. The sources therefore contain differing historical dates.

Spatial light modulators

HOLOEYE's liquid-crystal modulators use applied pixel voltages to change the optical response of the liquid crystal. For suitable incident polarization, the molecular orientation changes the optical path length through the cell, allowing an addressed gray level to represent a phase delay. The catalog includes reflective LCOS and transmissive liquid-crystal devices; the intended phase or amplitude behavior depends on the cell design and optical configuration.

The table records manufacturer specifications for the listed product versions. Pixel counts describe the modulator array, while video input and color-field modes describe different aspects of its operation.

Platform	Published pixel array and pitch	Optical type	Documented configuration
PLUTO-2.1	1920 × 1080; 8.0 µm	Reflective, phase-only LCOS	HDMI input at 60 Hz; 8-bit addressing. The catalog offers wavelength-specific panels, high-retardation versions and versions with dielectric mirrors. USB controls calibration settings.
ERIS-1.1	1920 × 1200; 8.0 µm	Analog, phase-only LCOS	HDMI input; the specification lists 60 Hz and 120 Hz input modes and 8-bit or 10-bit phase addressing. A trigger output supports synchronization with external equipment.
GAEA-2.1	Maximum 4160 × 2464; 3.74 µm	Reflective, phase-only LCOS	HDMI 2 input and 8-bit addressing. The published input rates are 60 Hz at 3840 × 2160 or 4000 × 2464, and 58 Hz at 4160 × 2464. Color-field-sequential operation uses three phase fields per frame; the corresponding listed field rates are 180 Hz or 174 Hz. A specific CFS panel is optimized for this mode.
GAEA-C	4094 × 2400; 3.74 µm	Reflective, phase-only LCOS	A compact GAEA-family driver with HDMI input, 8-bit addressing and a listed 30 Hz input rate. The manufacturer lists visible, near-infrared and telecommunications-band variants.
LETO-3	1920 × 1080; 6.4 µm	Reflective, phase-only LCOS	HDMI input; a visible-light CFS variant is optimized for 180 Hz operation with a synchronized color-switchable source. Other listed versions target visible or near-infrared operation.
LETO-720	1920 × 1080; 6.4 µm	Reflective, phase-only LCOS	A 240 Hz input/output mode, plus a 720 Hz modulation mode that packs three consecutive monochrome images into the RGB channels of each input image. The latter rate describes monochrome modulation fields.
LUNA	1920 × 1080; 4.5 µm	Reflective, phase-only LCOS	A 0.39-inch panel with DisplayPort input at 60 Hz. The visible-light version supports CFS phase applications with specified temperature and voltage settings; its documentation calls for a 55°C display temperature for that faster response.
LC 2012	1024 × 768; 36 µm	Transmissive liquid crystal	HDMI input at 60 Hz, intended for education and proof-of-concept work. Its twisted-nematic cell permits amplitude or predominantly phase modulation depending on polarization settings, with coupled amplitude effects.

= Calibration and optical integration

Panel selection includes the operating wavelength and required phase range. PLUTO's documentation, for example, distinguishes ultraviolet, visible, near-infrared, telecommunications and short-wave-infrared variants, and describes adjusting voltage and gray-level calibration for the wavelength. It also documents phase flicker from digital addressing and a tradeoff between reduced flicker and response time for high-retardation panels.

The electrical refresh specification alone does not determine the displayed optical result. HOLOEYE specifies different phase ranges and reflectivities for different panel versions and wavelengths. For color-sequential operation, the phase pattern and illumination must be synchronized; LETO-3 provides a light-source connector for this purpose, while LUNA's CFS configuration also requires temperature control.

Projection microdisplays and development services

HOLOEYE also lists LCOS microdisplays for conventional monochrome and color projection. Its stated application areas include industrial imaging, simulation, head-mounted displays, and AR/VR. In color-field-sequential projection, one panel repeatedly displays the red, green and blue image fields while a triggered source supplies the corresponding illumination.

Component	Published display specifications	Evaluation hardware
HED 6001	Reflective monochrome LCOS; 1920 × 1080 pixels, 8.0 µm pitch, 0.7-inch diagonal and 60 Hz monochrome input.	The HEO 6001 developer kit supplies a display, drive board and accessories. HDMI supplies images; USB supports calibration and configuration, and a trigger output supports external synchronization.
HED 2220	Reflective color-field-sequential LCOS; 1920 × 1080 pixels, 4.5 µm pitch and 0.39-inch diagonal. Its 60 Hz input uses six color fields, RGBRGB, at a 360 Hz field rate.	The HEO 2220 developer kit receives DisplayPort video and uses USB for configuration. The display integrates its driver ASIC and accepts four-lane MIPI DSI for component integration.

Its custom LCOS services cover drive boards, flex cables, FPGA projects, liquid-crystal design, display assemblies, packaging, firmware and drive sequences. The service description also includes component qualification and application-specific test systems. These services apply to both projection displays and phase-modulation components.

Diffractive optics

HOLOEYE supplies standard and custom diffractive optical elements whose surface-relief microstructures reshape transmitted light through diffraction. The documented functions include beam splitting, pattern generation, diffusion and beam shaping. Its pattern-generator applications include structured-light projection for three-dimensional sensing; its diffuser applications include time-of-flight sensing and laser autofocus. These are optical component functions within a larger illumination or sensing system.

Software and experimental workflows

HOLOEYE provides software for generating, displaying and programmatically controlling SLM patterns. The tools support optical experiments in which image or phase data must reach the modulator without unintended image enhancement.

Tool	Documented functions
SLM Pattern Generator	Computes CGHs from image files with an iterative Fourier-transform algorithm and generates optical functions such as gratings and Fresnel-zone lenses. Its phase-to-gray-level conversion assumes calibration to a 2π phase range. It supports wavefront compensation and batch calculation of holograms for image sequences.
SLM Slideshow Player	Plays image or phase-map sequences at a selected rate, saves experiment settings in playlists, and provides phase overlays and transformations. Its purpose includes preserving the supplied gray values rather than automatically sharpening photographs or changing their contrast.
SLM Display SDK	Displays images and phase arrays from an application, supports Zernike-based overlays and data transformations, and controls multiple modulators. The published environments include C/C++, LabVIEW, MATLAB, Octave and Python. The current SDK description specifies 64-bit Windows 10 or later.

Published near-eye display research

The following examples document researchers' use of specific HOLOEYE devices. Their optical layouts, computations and measured results belong to those experiments, including their stated limitations.

Research	Component and method	Demonstration and limits
Cem and colleagues (2020)	A HOLOEYE GAEA phase modulator with 3840 × 2160 pixels and 3.74 µm pitch, RGB laser illumination and an ellipsoidal mirror. The design images the SLM at the eye's rotation center so hologram changes can steer the central image.	The authors demonstrated a 20° × 20° instantaneous field of view and horizontal steering across an extended 40° × 20° field. They used offline holograms and positioned the recording camera precisely; live pupil-driven hologram updates were not demonstrated. The opaque fabricated mirror also prevented a true see-through AR demonstration.
Tensor Holography (2021)	The MIT team's original project page identifies a HOLOEYE PLUTO SLM in its near-eye demonstration. A neural-network pipeline synthesizes holograms from RGB-depth images.	The project presents a live capture with optical focus and defocus at different scene depths. Its published abstract reports 60 Hz synthesis at 1920 × 1080 on a consumer GPU, but 1.1 Hz on an iPhone 11 Pro and 2 Hz on an Edge TPU. These are computation results for the team's pipeline and tested hardware.
Chlipala and colleagues (2025)	A GAEA 2.0 phase modulator with 3840 × 2160 pixels and 3.74 µm pitch. Three RGB LEDs illuminate it at different angles; frequency multiplexing reconstructs color from one hologram frame.	The experiment displayed a precomputed 1,140-frame sequence at 58 Hz. Its optical configuration had a reported maximum 31.6° field of view and a 1.3 × 2.5 mm eyebox. For the tested point cloud, one RGB hologram took 111 seconds to calculate. The playback rate therefore does not establish real-time synthesis of that scene.

The GAEA hardware and operating modes described in these studies differ from the current GAEA-2.1 catalog configuration. The papers identify the equipment they tested; newer input modes and panel specifications must be read from the corresponding product documentation.

REALHOLO research project

HOLOEYE Photonics participated in REALHOLO, a Horizon 2020 project to develop piston-type microelectromechanical micromirror arrays for phase modulation, holographic mixed reality displays, active illumination and sensing. The European Commission record gives a project period of 1 January 2021 to 31 December 2025 and marks the project closed. Its objectives included automotive holographic head-up display demonstrations and enabling later head-mounted display applications.

HOLOEYE's own project description assigns it work on SLM driving, performance characterization and a structured-illumination demonstrator for complex two-dimensional holographic patterns. This describes a consortium research role and the planned use case. The project objectives alone do not establish a commercial headset release or a measured reduction in motion sickness.

Reviewed 12 October 2026. Checked the German company identity, differing published foundation dates and independent US Systems history, Jasper LCOS asset acquisition, version-specific SLM and projection specifications, optical calibration and software features, original 2020 and 2025 near-eye studies, MIT Tensor Holography project results, and REALHOLO dates and assigned research role against all 26 cited sources. About review dates.