NA 027

DIN Standards Committee Optics and Precision Mechanics

About NAFuO

The DIN Standards Committee for Precision Mechanics and Optics (NAFuO) is responsible for standardization in

  • precision mechanics - including in healthcare technology,
  • microsystems technology,
  • optics and photonics
  • as well as jewellery and horology.  

The NAFuO also covers the biological evaluation and clinical investigation of medical devices, and tissue engineering. In the field of personal protective equipment, it is responsible for the standardization of personal eye protection, respiratory protective devices and diving equipment.

Most of the documents developed by the NAFuO are "harmonized" European Standards which give detail to the essential safety requirements laid down in European Directives. These harmonized standards are essential for placing products to the European market.

The Committee also aims at making as many standards as possible available at international level to reflect the global nature of these markets and to promote the global harmonization of approval procedures, particularly in the medical devices sector.

The NAFuO monitors all current developments in its areas of activity and is very open to new technologies and trends.

Feel free to contact us any time if you see the need to standardize a particular subject.

How is NAFuO composed?




DIN e. V.

Elisabeth Beck

Alexander-Wellendorff-Str. 2
75172 Pforzheim

Send message to contact  

New projects
Document number Begin Title
ISO/WD 10328 2020-04-30 Prosthetics - Structural testing of lower-limb prostheses - Requirements and test methods More  Comment 
DIN EN ISO 22523 2020-04-27 Externe Gliedmaßenprothesen und externe Orthesen - Anforderungen und Prüfverfahren More  Comment 
ISO/FDIS 8549-4 2020-04-20 Prosthetics and orthotics - Vocabulary - Part 4: Terms relating to limb amputation More  Comment 

All projects  

Current Draft Standards
Document number Edition Title
DIN 58175-2 2020-07 Lasers and laser-related equipment - Determination of the properties of ultra-short laser pulses - Part 2: Autocorrelation measurement method; Text in German and English More 
DIN 58273 2020-06 Medical instruments - Fixation forceps More  Read draft and comment
DIN 58285 2020-06 Medical instruments - Retractor type Volkmann More  Read draft and comment

All draft standards  

Document number Edition Procedure Title
DIN ISO/TR 21477; DIN SPEC 13477 2018-08 Technical Report Optics and photonics - Preparation of drawings for optical elements and systems - Surface imperfection specification and measurement Systems (ISO/TR 21477:2017) More  Order from Beuth Verlag
DIN SPEC 58193 2017-08 Technical Report Spectacles and sunglasses - Critical substances potentially present in their materials More  Order from Beuth Verlag
DIN SPEC 58194 2015-12 VN Ophthalmic optics - Terms and definitions related to free-form technology; Text in German and English More  Order from Beuth Verlag


New standards
Document number Edition Title
DIN ISO 9211-5 2020-07 Optics and photonics - Optical coatings - Part 5: Minimum requirements for antireflecting coatings (ISO 9211-5:2018) More  Order from Beuth Verlag
DIN ISO 9211-6 2020-07 Optics and photonics - Optical coatings - Part 6: Minimum requirements for reflecting coatings (ISO 9211-6:2018) More  Order from Beuth Verlag
DIN ISO 9211-7 2020-07 Optics and photonics - Optical coatings - Part 7: Minimum requirements for neutral beam splitting coatings (ISO 9211-7:2018) More  Order from Beuth Verlag

All standards  

Documents withdrawn without replacement
Document number Deadline for comments Title
DIN EN ISO 11489 2020-05-31 Determination of platinum in platinum jewellery alloys - Gravimetric method after reduction with mercury(I) chloride (ISO 11489:1995); German version EN ISO 11489:1995 More  Comment 
PAS 1048-1 2020-05-31 Grading polished diamonds - Part 1: Terminology and classification More  Comment 
PAS 1048-2 2020-05-31 Grading polished diamonds - Part 2: Test methods More  Comment 

All withdrawals  

Your way to NAFuO

The Offices of DIN Pforzheim are located at the borders of the City center.

Feinmechanik und Optik
Außenstelle Pforzheim
Alexander-Wellendorff-Str. 2
75172 Pforzheim
Tel.: 07231 9188-0

Show map in full screen

Main station (Hauptbahnhof), approx. 15 minutes walking distance to Alexander-Wellendorff-Straße. Leave the station platform and take Exit West towards city (Schmuckwelten). In the pedestrian underpass please keep left and follow the Bahnhofstraße continuing into the Leopoldstraße up to the bridge. After the bridge turn right and continue along the Jörg-Ratgeb-Straße, cross the street on to the Turnplatz. The DIN office is located to the right of the Wellendorff company. Taxi approx. 7 minutes, ca. 8 €.

Alternatively take the bus line 2 to Sonnenhof or line 8 to Rodrücken, approx. 10 minutes. Get off the bus at ”Turnplatz“ and cross the parking.

Coming from the autobahn A8 please take junction Pforzheim Nord (exit No 44). Continue along B294 (follow Heinrich-Wieland-Allee, Hohenzollernstraße, Christophallee) heading for the city centre. After passing the main railway station, turn off the B294 onto the Luisenstraße towards Brötzingen (i. e. at the petrol station ”Jet“ keep left). At the next set of lights turn left and follow the Berliner Straße up to the bridge. After the bridge turn right onto the Turnplatz. It is possible (except on Wednesdays) to park directly on the Turnplatz (parking fee).

The DIN office is located to the right of the Wellendorff company. Please note, if you use a navigation system, Turnplatz should be entered as destination, not Alexander-Wellendorff-Straße 2.

Free parking is available on the Messplatz. Please follow the corresponding inner city road signs.

From there, it is a 10 minute walk along the Enz (downstream direction) to the DIN Office.