Discover the Potential of
Ultra Precision Manufacturing
of Aspheres and Freeforms
at our Workshop in Jena

Our work­shop, held bien­ni­ally in Jena, the City of Light, has evol­ved into the spe­cia­list forum for com­pa­nies, rese­ar­chers and experts in ultra-pre­cis­ion optics. Join us to streng­then your pro­fes­sio­nal net­work across the lea­ding experts of the optics indus­try!

On Sep­tem­ber 8–9, 2026, the inter­na­tio­nal com­mu­nity will gather once again to exch­ange valuable insights on the latest deve­lo­p­ments and rese­arch results in the manu­fac­tu­ring and cha­rac­te­riza­tion of asphe­res and free­form sur­faces.

Stay tuned for the upco­ming pro­gram of this year’s work­shop! Until then, it’s worth brow­sing through the excel­lent pro­gram of the 2024 edi­tion to get a first impres­sion.

UPM Program 2025

The 2026 pro­gram is orga­ni­zed into four key focus areas: Free­form Optics for novel appli­ca­ti­ons, Mid-Spa­tial Fre­quen­cies, Manu­fac­tu­ring and Cha­rac­te­riza­tion of Free­form Sur­faces, and The 2026 pro­gram is orga­ni­zed into four key focus areas: Free­form Optics for novel appli­ca­ti­ons, Mid-Spa­tial Fre­quen­cies, Manu­fac­tu­ring and Cha­rac­te­riza­tion of Free­form Sur­faces, and Free­form Sys­tems..

08:30

Exhibitors (Booth set up)

Fraun­ho­fer IOF
11:00

Registration & Welcome Snack

Fraun­ho­fer IOF, Abbe Cen­ter of Pho­to­nics
12:00

Welcome note

Abbe Cen­ter of Pho­to­nics
12:10

KEYNOTE t.b.a.

Vol­ker Kirsch­ner  ·

Euro­pean Space Agency ·

      
Part I

Freeform Optics for novel applications

12:40

#1 Telescope for Quantum Key Distribution – based on metal optics

Nils Heid­ler  ·

Fraun­ho­fer Insti­tute for Applied Optics and Pre­cis­ion Engi­nee­ring IOF ·

13:20

Exhibitor Session I

Abbe Cen­ter of Pho­to­nics
14:10

Exhibition & Coffee Break

Fraun­ho­fer IOF
15:00
Part II

Mid-Spatial Frequencies

Abbe Cen­ter of Pho­to­nics
      

#1 Diffractive Effects in Mid-Spatial Frequencies: Characterization, Modeling, and Specification

Tibe­riu Cec­cotti   ·

Net­her­lands Orga­ni­sa­tion for Applied Sci­en­ti­fic Rese­arch TNO | Delft Uni­ver­sity of Tech­no­logy ·

15:20

#2

Johan­nes Har­tung   ·

Fraun­ho­fer Insti­tute for Applied Optics and Pre­cis­ion Engi­nee­ring IOF ·

15:40

#3 Cross-wavelength correction of optical aluminum surfaces using reactive ion beam processing

Tho­mas Arnold  ·

Leib­niz Insti­tute of Sur­face Engi­nee­ring e.V. (IOM) ·

16:00

Exhibition & Coffee Break

Fraun­ho­fer IOF
19:00

Reception

09:00
Part III

Manufacturing and Characterization of Freeform Surfaces

Abbe Cen­ter of Pho­to­nics
      

#2

Ste­phan Rei­chelt  ·

Uni­ver­sity of Stutt­gart · Insti­tute of Applied Optics ·

      

#3

Falk Eilen­ber­ger   ·

Fraun­ho­fer Insti­tute for Applied Optics and Pre­cis­ion Engi­nee­ring IOF ·

10:30

Exhibition & Coffee Break

Fraun­ho­fer IOF
11:00

Exhibitor Session II

Abbe Cen­ter of Pho­to­nics
11:50

Exhibition & Lunch Break

Fraun­ho­fer IOF
12:50
Part IV

Freeform Systems

Abbe Cen­ter of Pho­to­nics
      

#1

James B. John­son   ·

Mas­sa­chu­setts Insti­tute of Tech­no­logy ·

      

#2

Cyril Bour­ge­not   ·

Dur­ham Uni­ver­sity ·

      

#3

Neil Nap­les   ·

AMETEK Pre­ci­tech Inc. ·

13:50

Wrap up and Closure

Fraun­ho­fer IOF
13:55

Exhibition, Snacks & Coffee

Tickets and fees

You will receive an auto­ma­tic regis­tra­tion con­fir­ma­tion. Please also check your spam fol­der.

Choose your ticket

regis­ter now

Cancellation

Can­cel­la­tion of your regis­tra­tion is pos­si­ble free of charge until August 7, 2026. After this date, the full par­ti­ci­pa­tion fee will be char­ged. Sub­sti­tute par­ti­ci­pants are wel­come. Can­cel­la­ti­ons and trans­fers must be sub­mit­ted in wri­ting by e‑mail to info@optonet-jena.de.

Your visit to Jena

Venue

The work­shop takes place at the Beu­ten­berg Cam­pus Jena.

The lec­ture pro­gram will be held at Abbe Cen­ter of Pho­to­nics, the aca­de­mic cen­ter of sci­en­ti­fic acti­vi­ties in the fields of optics and pho­to­nics at the Fried­rich Schil­ler Uni­ver­sity Jena 

  • Abbe Cen­ter of Pho­to­nics
    Albert-Ein­stein-Straße 6
    07745 Jena · Ger­many

The exten­ded exhi­bi­tion area is loca­ted just a few meters away in the Fraun­ho­fer IOF, where ever­yone meets for cof­fee and lunch breaks.

Evening event

The evening event will take place on Sep­tem­ber 8, 2026 start­ing at 7:00 p.m. at the SCALA Sky Con­fe­rence, JENTOWER, Leu­tra­gra­ben 1, 07743 Jena.

With a breath­ta­king view, fine food and drinks, we wel­come you to our evening recep­tion at the SCALA Sky Con­fe­rence in the city cen­ter of Jena. With the pho­to­nics para­dise of Jena at your feet, you have the per­fect set­ting for fur­ther dis­cus­sions.

Hotel recommendation

We recom­mend boo­king early, as hotel capa­ci­ties in Jena are limi­ted.
We can recom­mend the fol­lo­wing hotels:

How to reach the Beutenberg Campus

By public trans­port: From the city cen­ter, choose eit­her of the bus lines 10, 11, 12 to reach the Beu­ten­berg cam­pus.

By car: It is not easy to approach the Beu­ten­berg cam­pus by car due to the lack of public par­king lots at the cam­pus. Howe­ver, if you wish to arrive by car, use »Albert-Ein­stein-Str. 6« as major input for your GPS sys­tem.

General Terms and Conditions

1. General

These Gene­ral Terms and Con­di­ti­ons apply to par­ti­ci­pa­tion in the Ultra Pre­cis­ion Manu­fac­tu­ring of Asphe­res and Free­forms Work­shop orga­nised by Opto­Net e.V., unless other­wise agreed in wri­ting. By sub­mit­ting the regis­tra­tion form, par­ti­ci­pants accept these Terms and Con­di­ti­ons.

Devia­ting or con­flic­ting terms and con­di­ti­ons of the par­ti­ci­pant shall not apply unless expressly agreed to in wri­ting by Opto­Net e.V. Any amend­ments or sup­ple­men­tary agree­ments must be made in wri­ting.

2. Registration and Conclusion of Contract

Regis­tra­tion for the work­shop is bin­ding. A con­tract is con­cluded upon sub­mis­sion of the regis­tra­tion and con­fir­ma­tion of the regis­tra­tion by Opto­Net e.V.

3. Participation Fees

The par­ti­ci­pa­tion fees are those sta­ted on the regis­tra­tion page at the time of boo­king. All pri­ces are sub­ject to sta­tu­tory VAT where appli­ca­ble. The scope of ser­vices included in the par­ti­ci­pa­tion fee is defi­ned in the event descrip­tion.

4. Payment

Invoices are paya­ble within 14 days wit­hout deduc­tion. Opto­Net e.V. reser­ves the right to deny par­ti­ci­pa­tion if the par­ti­ci­pa­tion fee has not been paid in full before the start of the event.

5. Cancellation and Substitution

Can­cel­la­tion of regis­tra­tion is pos­si­ble free of charge until the can­cel­la­tion dead­line sta­ted on the regis­tra­tion page. After the end of the can­cel­la­tion period, the full par­ti­ci­pa­tion fee is due. Sub­sti­tute par­ti­ci­pants may be nomi­na­ted at any time.

Can­cel­la­ti­ons and sub­sti­tu­ti­ons must be noti­fied in wri­ting by e‑mail to info@optonet-jena.de.

6. Programme Changes and Cancellation of the Event

Opto­Net e.V. reser­ves the right to make reasonable chan­ges to the pro­gramme, spea­k­ers, sche­dule or venue if neces­sary.

Opto­Net e.V. also reser­ves the right to can­cel the event, par­ti­cu­larly in cases of force majeure, offi­cial orders, or insuf­fi­ci­ent par­ti­ci­pant num­bers. In such cases, par­ti­ci­pa­tion fees alre­ady paid will be refun­ded. Fur­ther claims are excluded unless lia­bi­lity is man­da­tory by law.

7. Liability

Opto­Net e.V. shall be lia­ble only for dama­ges cau­sed inten­tio­nally or by gross negli­gence, unless man­da­tory sta­tu­tory pro­vi­si­ons pro­vide other­wise. Lia­bi­lity for indi­rect dama­ges or loss of pro­fit is excluded to the ext­ent per­mit­ted by law.

8. Data Protection, Participant List and Photography

Per­so­nal data will be pro­ces­sed in accordance with OptoNet’s pri­vacy policy:
https://optonet-jena.de/datenschutzerklaerung/

By sub­mit­ting the regis­tra­tion form, par­ti­ci­pants agree that their name may be included in a par­ti­ci­pant list made available to other atten­dees. Par­ti­ci­pants also ack­now­ledge that pho­to­graphs taken during the event may be published on Opto­Net web­sites and social media chan­nels.

9. Final Provisions

Should any pro­vi­sion of these Gene­ral Terms and Con­di­ti­ons be or become inva­lid, the vali­dity of the remai­ning pro­vi­si­ons shall remain unaf­fec­ted.

Ger­man law shall apply to the exclu­sion of the UN Con­ven­tion on Con­tracts for the Inter­na­tio­nal Sale of Goods (CISG). The place of juris­dic­tion, to the ext­ent legally per­mis­si­ble, shall be the regis­tered office of Opto­Net e.V.