DELTA turns 75

For 75 years DELTA has been the technology pathfinder – passionately serving industry and society.

It all started in 1941, when Professor P.O. Pedersen, President of ATV (the Danish Academy of Technical Science), outlived his vision of creating focused technological institutes and established Danish Acoustical Laboratory as the first ATV institute in Denmark. Under the leadership of the dedicated engineer, Fritz Ingerslev, Danish Acoustical Laboratory built up a strong team of acoustics expects and formed the basis of the Danish audio industry.

In 1944, two other roots of DELTA followed, when Danish Laboratory for Technical Optics, and Radio Technical Research Laboratory were established. The light technical lab proved highly instrumental in nurturing and developing Danish light industry, and safety measures for road traffic. The radio technical lab originally supported the radio industry, but it gradually switched focus into electromagnetic radiation verification, and later became ElektronikCentralen.

In 1993 the three institutes, Danish Acoustical Institute, Light & Optics, and ElektronikCentralen, merged and formed DELTA Danish Electronics, Light and Acoustics as we know it today.

With 75 years of experience we continue serving the future needs of industry and society based on our role as an independent GTS institute. We help our customers with consultancy, testing and product development using our strong base within electronics, microelectronics, software technology, light, acoustics, vibrations, and sensor systems.

By the end of 2016, DELTA merges with FORCE Technology. Both DELTA and FORCE Technology is based on proud traditions and world-leading knowledge in advanced technology. Together we create one of Scandinavia’s largest technological service companies with more than 1,600 employees and a wide range of unique facilities for the benefit of our customers. Read more here.

Explore the topics of our coming three years of research and development efforts.

Anecdotes from DELTA's history through 75 years

Below is a timeline of DELTA’s most important milestones during its history


The history of DELTA begins with the establishment of the Danish Acoustical Laboratory and ELDOK (Electronics Documentation and Patents Association).


The scientific engineering publications from the Danish Academy of Technical Sciences (ATV) include results from the Danish Acoustical Laboratory (Lydteknisk Laboratorium) published in the early 1940s. Entries in the ledger from 1941 were made and balanced by hand and included everything from minor purchases to employee wages. The economy of the Danish Acoustical Laboratory was managed using this ledger for ten years. In modern times, DELTA’s data area corresponds to 300 standard ledgers – per employee.


DELTA develops a Danish radio tube, so that the 20 plus Danish radio manufacturers did not have to pay the patent-fee to foreign manufacturers. The Danish tube was produced in the factory Oxytron.


The sound hammer, from 1947, was used to study how noise is propageted in buildings. The tapping machine (the “Spider”, from 1943) was used for studying footsteps, i.e. to determine how the sound of footsteps is propageted in buildings.


DELTA plays an active role for the Danish television by developing a circuit to the television receivers which the Danish factories could use, and by constructing equipment to the big radio and television exhibition in Forum, which is described in the Danish TV-series “Krøniken” (the Chronicle).


The first Danish transistor radio. Prototype from the 1950s. It was developed by ElektronikCentralen to show Denmark’s radio industry that it had become possible to build radios using transistors and a battery instead of vacuum tubes, thereby making the transistor radio portable. As vacuum tubes required a voltage of about 70 V, they could not be powered by a battery.


Tape recorder, headset and microphone from the 1950s. They were used for the Danish Acoustical Laboratory’s measurements. The small box is a noise calibrator from around 1960 and was used as a source of noise for calibrating a microphone. The noise was generated by small steel bearings dropping onto a mica membrane.


DELTA builds the first Danish microcomputer, ECMAT, the same year Intel introduces the first microprocessors to the market in Denmark. ECMAT gives DELTA knowledge, which is used to help many other companies in using microcomputers.


DELTA begins to work with traffic noise and demonstrates for the first time that high levels of traffic noise can lead to sleep disturbancies, psychological problems and large consumption of medicine among residents plagued by noise.


In 1974, a 2 kilobit magnetic core memory can contain approx. 4 lines of standard text. A 32 GB USB flash drive can contain up to 32,000 standard books with text. Read/write time has become approx. 100-1000 times faster, and memory is much cheaper and much more accessible. In the magnetic core memory, the conducting patterns were fitted by hand. DELTA has worked with the testing of integrated circuits since the mid 70s and later, also in the design of components. The four ASIC prototypes are from the end of the 80s and were developed by DELTA, and the 25 wafers with chips were first designed by DELTA in the 90s.


Tests used for type approval of electronics for maritime use becomes a new field of expertise for DELTA. A special test programme is established at DELTA, giving access to as many as 24 different approvals with one single test report.


DELTA develops a new method and measurement equipment to detect how well road lighting works. On the basis of this, Denmark is the first country in the world that improves road safety by laying down requirements for the quality of street lighting on wet roads. DELTA’s method later became popular throughout Europe, and the employees involved were awarded an international prize.


The first reflectometer from 1982, in a series of reflectometers developed by Lysteknisk Laboratorium (Light Technical Laboratory) for measuring reflections from road markings. The development was done in collaboration with Superfos, and the system meant that the Lysteknisk Laboratorium for many years had a competitive advantage based on the technical quality of the solutiont.


DELTA takes over the responsibility of approving electronic scales sold in Danmark because the government closes down Justervæsenet (a public calibration body).


Using psycho-acoustic principles, DELTA develops acoustic alarms for the Danish Emergency Management Agency’s national network of sirens, which warn the general Danish population in case of danger.


DELTA solves its first major offshore task: testing an entire alarm system for a drilling platform.


In 1984, ESA and NASA launch the shared space telescope – Hubble. The control system for unfolding the solar panels uses electronics that were developed by DELTA specialists, who have now worked with space electronics for approx. 30 years (since the middle of the 60s).


DELTA establishes a data laboratory to help the industry within a new field: The development and quality of software.


DELTA establishes an approval system for data cables for IBM. Today, the system is known as EC Verified, and used by companies throughout the world.


DELTA officially opens a 120 m2 large EMI room for the electromagnetic measurement of equipment. At the time, it is DELTA’s largest investment ever.


DELTA is officially formed by the merger of ElektronikCentralen (Electronics Centre), Lydteknisk Institut (Light Technical Institute) and Light & Optics.


DELTA establishes the development and manufacturing of electronic chips for business clients.


DELTA establishes DELTA Development Technology AB in Västerås in Sweden.


In collaboration with representatives from Norway, Switzerland and the USA, DELTA develops a new and improved method for calculating aviation noise around airports.


DELTA establishes DELTA Microelectronics Ltd. in the UK.


DELTA launches optical SMART filters, which consist of up to 100 microscopically thin layers, and which are among the most advanced optical components in the world.


DELTA opens a test centre for HALT (Highly Accelerated Life Testing), which is a new and very efficient method for testing a product’s reliability.


DELTA establishes facilities for the development, manufacturing and testing of industrial MEMS products and nano systems.


DELTA officially opens its new headquarters in Hørsholm.


ICAM is promoted in Taiwan

DELTA establishes a department in Them, Denmark.

DELTA participates in a project paid for by NASA and the US Army via Wyle Laboratories (USA).


The first RF ASIC in the history of DELTA Microelectronics.

DELTA starts developing a system using electronic plasters for monitoring patients with chronic obstructive lung disease (COPD) in their own homes.


IctalCare A/S is established, with DELTA (80 %) and Coloplast (20 %) as owners.


DELTA’s new LTL-XL reflectometer begins to conquer the world.


DELTA Light & Optics starts production of the first TopPride filter set.


DELTA establishes the new Incubator Division.


DELTA’s 70th Anniversary on 1 January 2011.

1 April the Centre for Software Innovation (CSI) in Sønderborg becomes part of DELTA .

DELTA acquires Danfoss’ test centre for Reliability & Corrosion in Nordborg.

Welfare and healthcare technology becomes one of DELTA’s key competence areas.

DELTA develops a wireless platform for telemedicine monitoring, called ePatchTM.


DELTA moves the Them activities to new facilities in Agro Food Park, Aarhus, with a 10 m EMI room and Denmark’s first EMC reverberation chamber.


DELTA launches its new vision: ‘Denmark shall be the best place to carry out high-tech product development.’

DELTA launches DELTA Share, which is a platform for all of DELTA’s knowledge sharing activities and the administration of DELTA’s clubs.


Juan Farré joins DELTA as its new CEO.

The business areas Optical Thin Film and ImprovAbility are divested.


DELTA publishes the book: “Danish Loudspeakers – 100 years” in coorporation with 15 partners.


DELTA launches new web site.

DELTA celebrates 75 years anniversary

DELTA and FORCE Technology merge and create one of Scandinavia’s largest technological service companies with more than 1,600 employees and a wide range of unique facilities for the benefit of our customers. “

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