Diffraction Black

At first glance, diffraction black looks like it’s printed in paint, but tilt the Black Lidogram and look at the device at an acute angle to see the black change to a rich, pure color of red or green. This feature is also used as a distinctive feature of Black Lidogram when checking for authenticity. As a result, we have created an optical diffraction device that has unique properties and is successfully used to protect brands, products and documents. Black Lidogram devices combine extraordinary aesthetic and security features and are used in the design of tax stamps, ID documents, passports, and banknotes.  

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E-LIDOGRAM fulfills all 3 levels of security for protection of documents and trademarks.




Demax Holograms is a leading player in the government documents and the high security printing sectors. At the forefront of nano-optical technologies, Demax Holograms offers an extensive product range comprising currency, passport an

Latest News

Demax Hologras became a member of The International Tax Stamp Association (ITSA) ...
In September Demax Holograms Plc. successfully passed audit according to requirements of the standard for Security Printers The result of ...
During the annual IHMA forum in Minsk, Belarus, Demax Holograms was awarded in two nominations, Innovation in Holographic Technology and ...
Again Number One! During the annual IHMA forum in Barselona, Demax Holograms was nominated and won the prize for Best Origination WINNER  ...
Excellence in Holography Awards 2016 IHMA awards for Innovation in Holographic Technology and Best Origination On 28-30th of Novermber was ...
As we already announced before, we are armed with new equipment. Using the advantages the e-beam technology, our team has ...

Certificates and Awards

–  Full member of the International Association of Producers of Holograms (IHMA)

– ISO 9001 Quality Management System
– ISO / IEC 27001 Information Security Management
– ISO 14001 Environmental Management System
– ISO 14298 Secure Management System for Security Printing

– Winner of gold medal and diploma from the 60th International Technical Fair, Plovdiv, 2004, for holograms and optical elements for protection against counterfeiting.

– IHMA award Best Applied Security Product for “Car Document Authentication for Bulgaria”

– IHMA award Best Origination – 2016 and 2017

– IHMA award Best Innovation in Holographic Technology – 2016


Demax Holograms Plc.

11, Boyan Damyanov, 1784 Sofia, Bulgaria
Tel:  +359 2 9307 641
Fax: +359 2 9307 643


Upcoming Events

The Holography conference 12-13 November 2024 Online
Optical Document Security 08-09 April 2024 Lisbon, Portugal
High-Security Printing 03-05 February 2025 Basel, Switzerland
Identity Week 11-12 June 2024 Amsterdam, Netherlands
Trustech 03-05 December 2024 Paris, France
Label Expo 16-19 September 2025 Barcelona, Spain


Upcoming Events