Category: Events


Meet GBvi at IMAGE 2019

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We’re excited to announce that we will once again be exhibiting at the annual IMAGE conference in Dayton, Ohio, from 25-26 June.

Since 1977, IMAGE, a non-profit technical, professional association for the advancement of visual simulation, related technologies, and their applications, has welcomed industry experts from across the globe.

Geoff Blackham and his team from GBvi will be in attendance on the GBvi booth – to arrange a meeting or discuss a project opportunity, please contact us at

Click here for more information on the IMAGE conference



GBvi at I/ITSEC 2018 – Discover What’s on Show

GBvi to Premier Two New Technologies at IITSEC 2018New GBvi product releases will be premiered for the first time at this year’s IITSEC with on-stand and partner-stand demonstrations at the show.

What’s Happening at I/ITSEC 2018

Discover Atlas-4, our new projector mount solution
New for I/ITSEC 2018, Atlas-4 been designed to significantly ease projector installation and optical alignment – providing a robust interface to a projector and supporting the structure while providing all necessary mechanical adjustments to optimise projection geometry.

See Chronos Rewind – our precision actuated retraction system for use with optical blend masks
Our dedicated solution that allows for Auto Alignment systems to be integrated with optical blend masks as part of multi-channel displays.

See Chronos Glass: Greyscale working with two Norxe P1 projectors
The two-channel, edge-blended display with Chronos Rewind will be on our stand #2615.

Visit our partner stand – Immersive Display Solutions Inc. (IDSI)
Our products can also be found on the IDSI stand (#1273) where both Chronos Glass: Greyscale and Atlas-4 will be on display with Barco FS40 projectors and IDSI’s new low-cost curved screen.

Meet our Team at I/ITSEC
Geoff Blackham, Dan Blackham, Rob Dawson and Peter Sinclair will all be at the show and are looking forward to meeting with attendees.


GBvi to Exhibit at I/ITSEC 2018

GBvi will again be exhibiting at I/ITSEC in Orlando. 

Visit us on Stand #2615 from 26-30 November.

More details on our on-stand demonstrations and product releases will be made available in the lead-up to the show.


The Interservice/ Industry Training, Simulation and Education Conference (I/ITSEC) is the world’s largest modelling, simulation, and training conference.

Held near the beginning of December in Orlando, Florida, USA, I/ITSEC consists of peer-reviewed paper presentations, tutorials, special events, professional workshops, a commercial exhibit hall, a serious games competition, and STEM events for teachers and secondary students. I/ITSEC is organised by the National Training and Simulation Association (NTSA), which promotes international and interdisciplinary cooperation within the fields of modelling and simulation (M&S), training, education, analysis, and related disciplines at this annual meeting. The NTSA is an affiliate subsidiary of the National Defence Industrial Association (NDIA). Hence, I/ITSEC also emphasizes themes related to defence and security.

For more information, visit





GBvi supports Holovis at ITEC 2018 on JALO-accredited 4-metre dome training environment

From May 15th-17th, GBvi is supporting Holovis with an optical edge-blending solution for a 3-channel digital display as part of their new four-metre dome training environment, accredited by the UK Joint Air Land Organisation (JALO) at ITEC – the international forum for the Military Simulation, Training & Education Community – this year taking place at the Stuttgart Messe.

Chronos Glass: Greyscale has been used for the on-stand demo to provide perfect, diffraction free blending for LED and laser phosphor-projectors.

Chronos Glass Greyscale addresses the ‘small 4K’ and 8K class of projection systems where some optical trade-offs are most challenging, particularly with laser-phosphor illumination

For more information on Chronos Glass: Greyscale, please click here


GBvi to exhibit at IMAGE 2018

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GBvi has been confirmed as exhibitor at IMAGE 2018 Conference

This year’s IMAGE Conference will be hosted by the University of Dayton, Ohio, from 26-27 June and will once again be a unique technical conference focused on visual simulation and related technologies.

About the IMAGE Society

The IMAGE Society, Inc. is a non-profit, technical, professional association for the advancement of visual simulation, related technologies, and their applications.


I/ITSEC 2017… Until Next Year!

gbvi iitsec chronos greyscale

While the show finished just a little over two weeks ago, I/ITSEC 2017 seems like an age back! 

For the first time GBvi exhibited in its own booth. While small in floorspace (10’ square) we’re confident we got the message across – we do optical blending!

Two Barco FS70 projectors, kindly loaned by Barco for the show, cross-fired onto a simple cylindrical screen, 90° across, with a Chronos optical blend between them.

Our new Chronos Greyscale plates were fitted to compact frames, interfaced to the Barco front support points via a lightweight framework.  At risk of being immodest, the blend was perfect and we received many compliments to that effect.  We developed Greyscale to address the challenge presented by laser phosphor light sources and higher projector pixel counts, both of which push the trade-offs harder when using our patterned masks.  Not to say that patterned masks are dead – they still offer excellent performance and sometimes represent the only high-quality option for some projectors such as 20K Lumen 3-chip units – but we now have another arrow in our quiver, so to speak.

So far as what else we saw at the show, we struggled to get off our booth to find out!  From a displays perspective there were several excellent systems on show, including those from IDSI (on multiple booths), Esterline, and Q4.  The projector manufacturers also showed their latest and greatest, including 8K devices from JVC and Digital Projection and exciting new LED-illuminated projectors from Norxe and Barco. Apologies to any that we have missed – time was very limited this year…

However, it seems very likely that you’ll see us at I/ITSEC again in 2018.

Season’s Greetings and Wishes to all the Simulation & Training community!


GBvi to Premier Two New Technologies at I/ITSEC 2017

Sussex, England — 16 November 2017 — GBvi, an industry leader in the development of high performance projector optical blending solutions for out-the-window simulation and training, will be launching two new optical blend technologies at I/ITSEC 2017 in Orlando, Florida, from November 27th to December 1st. On the GBvi stand (#2736), conference attendees can see a live demonstration of two innovative new products – Chronos Greyscale and Chronos Rewind.

GBvi’s Chronos range of optical blending solutions enable display system integrators to achieve an even black level across multi-channel projection displays, realising the maximum dynamic range and enhancing the perception of life-like imagery.

Two new product additions to the Chronos range will be premiered for the first time by GBvi at IITSEC with on-stand demonstrations at the show.


Chronos Greyscale

Chronos Greyscale is the new specialist GBvi optical blend technology that addresses the ‘small 4K’ and 8K class of projection systems where some optical trade-offs are most challenging, particularly with laser-phosphor illumination.

Chronos Greyscale is qualified for use with LED and laser phosphor projectors .

Chronos Rewind

“Use of Auto-Alignment (AA) systems for projection display calibration is becoming universal.” Geoff Blackham, founder and managing director of GBvi, explains. “While these systems produce excellent results, some perform best after removal of the blend masks from the light path to enable alignment and calibration to take place.”

Designed for use with a broad range of digital displays, Chronos Rewind addresses this issue, using an actuated platform and simple trigger interface to move the blend mask to and from the projector lens as required in a carefully controlled and precise manner.

This process allows for the blend to be retracted from the lens, auto calibration to be completed, and for the blend mask to be returned to its original, correct position.

Chronos Rewind allows for AA systems to be integrated alongside our Chronos optical blend masks as part of multi-channel displays.

“Our expertise in the field of projection display systems means we can provide an unrivalled service, helping customers with the whole display challenge – not confining our input to the blending alone.” says Blackham.

GBvi’s optical blending technology enables integrators to provide display systems which are free from the visual issues caused by digital blending. This means no ‘double-bright’ overlap regions, and no impact to contrast or dynamic range, as black level infill is no longer necessary to match blend brightnesses.

Chronos has been successfully implemented on WUXGA, WQXGA and 4K single-chip DLP, WUXGA and 4K 3-chip DLP and 4K LCoS projectors, including lamp, laser-phosphor and LED illuminated models.

To meet with GBvi at I/ITSEC 2017, please contact us at

— ENDS —


GBvi ( has a long standing heritage in the field of display systems design, specialising in optical blending solutions for multi-channel projection environments, with no limit to display size, screen shape or projector count. The company works with an extensive network of integrator partners, resellers and designers with a focus on the markets of simulation, entertainment and attractions.


Beth Nicholas   |
+44 (0) 7891 291471

see gbvi at iitsec 2017


GBvi’s Geoff Blackham to Speak at Display Summit 2017

GBvi’s founder and director, Geoff Blackham, has been announced as a speaker at this year’s Display Summit, organised by Insight Media focussing on the technologies, issues and opportunities for projection-based and body-worn immersive display systems in training, simulation, visualisation and entertainment applications for commercial, military and professional markets.

This means flat, curved and domed projection-based simulators, trainers, theatres and 3D visualisation solutions as well as body-worn immersive solutions using virtual, augmented and mixed reality.

The event will be technical in nature with attendees and speakers coming from:

  • Professional projection, LCD and LED component suppliers
  • Professional projection and LCD and LED manufacturers
  • Training and simulation integrators and manufacturers
  • 3D visualisation integrators and developers
  • Domed theatre developers and suppliers
  • AR, VR and MR developers and manufacturers
  • Advanced display developers (light field, holographic, volumetric)
  • 4K+ connectivity providers
  • 4K+ hardware rendering providers
  • Government and military end users
  • Professional and commercial end users
  • Universities and technology development centres

Geoff’s presentation, titled ‘Optical Blending for Maximising Dynamic Range of Projection Displays‘ will be given at 16:05 on October 4th, 2017 and has a published abstract of:

Quality projection displays for visual simulation have evolved to use mainstream commercial projection devices, which, together with automatic alignment solutions, have dramatically reduced time required for their installation, alignment and maintenance.  However, one bugbear has remained in the form of projector light leakage when displaying dark scene content.  Electronic blending solutions exist that produce excellent results for bright scenes but, for continuous background intensity levels in dark scenes, infill techniques are often applied, which can sacrifice up to 75% of the possible dynamic range. Optical solutions to blending multiple channels can solve this problem, offering the promise to increase the utility and hence value of visual simulation training substantially, yet often this option is not even considered – so why is this?

Optical blending implementations – which place physical masks in the projection light paths – have been around for a long time, but a universal solution for all projector types and scene content has yet to become available.  Many solutions give relatively poor performance that can be tolerated for dark scenes such as those experienced in night training, so are actuated out of the light paths for use with daytime scenes.  These present logistical challenges to simulator users, where a choice must be made as to what “mode” you are training, or some transition must be suffered while the blending system switches mode.  Other solutions cannot withstand sustained light flux without degradation, so again must be actuated, while yet others may cause image sharpness degradation in the blend regions, so must be designed very carefully to limit this impact, particularly with high-resolution projectors.

Included in this presentation will be a review of the mainstream projection technologies and their respective pros & cons, particularly with regard to scene dynamic range and blend implications. This in turn leads to a detailed review of optical blending options, presenting their operating theories and application scope.


ITEC 2017: GBvi premieres Chronos Greyscale on Canon and Sony stands

Last week’s ITEC show in Rotterdam, the Netherlands was a huge success – thanks to all who stopped by our stand.

The trend of an increased need for optical blending to maximise dynamic range in projected display systems continues.

Chronos Greyscale – our new optical blend technology capable of blending 4K laser phosphor projectors was demonstrated on Canon and Sony stands – this specialist solution will be available from Q3 2017.


The technology works with true greyscale, 4K+ resolution projectors and is laser phosphor compatible with low light loss.


For more information, please contact us.