14^th - High Level Expert Meeting (HLEM 2025) - Asphere Metrology

In the field of asphere metrology, many new advancements were achieved, new measurement procedures were developed and precision was noticeably improved. In previous High-Level Expert Meetings (HLEM) and workshops, developers, manufacturers and users have confirmed the great interest in asphere metrology.

Please learn more about previous events by following links (Workshop 2024,HLEM 2023, HLEM 2022, HLEM 2021, HLEM 2019, HLEM 2018, HLEM 2017; Workshop 2016; HLEM 2015; HLEM 2013; Workshop 2012; HLEM 2012, HLEM 2010)

In order to manufacture ultra-precise and high-tech optical components and to be capable of further miniaturization, reliable and extremely precise measurement technology is required. Both the introduced measurement systems as well as the results of round robin measurements show the enormous potential of this field of technology. In addition, a great need for comparability, standardization and proximity to users was also pointed out.

Save the DATE  - 14^th HLEM 2025, March 24 - 26, 2025!

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R e g i s t e r   H E R E !

Find here the Call for Measurements and Contributions

Find here the Programme-Preview

Find here the Detailed Program

 

This HLEM 2025 website will be actualized regularily, do you need any information that is currently not avaliable here?

Don´t hesitate to contact Mr. Klawitter in our administrative office!

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HLEM in Spring 2025

Our upcoming 14^th HLEM 2025 is dedicated to the presentation of measurement results of current lenses (6 parts), discussion and dissemination of new developments and recent scientific results in asphere and free form metrology for reflective and transmissive surfaces. With this broader scope we aim to supplement our previous events while also addressing asphere and free form metrology to interested scientists, developers and manufacturers.

The samples are available for measurements through kind support of Asphericon, Leica Camera, Innolite, Leibniz IOM and Edmund Optics. The marks on the glass samples were realized by NTG.

The following samples are available:

■ freeform “wild” - 36 mm (#7.1) - mounted

■ freeform “mild” - 36 mm (#8.1) - mounted

■ double-sided asphere concave 28 mm (#10.1)  - unmounted

■ asphere metal mould insert 4,6 mm (#11.1)

■ asphere lens 10 mm (#12.1) - unmounted

■ double sided asphere convex 25 mm (#13.1) - unmounted

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Planned Main Topics of HLEM 2025

Several companys and institutions are planning to perform measurements on the available samples.
Main topic of the conference will be the presentation of the measurement results of the four samples.

 

Main Topic:

■ Measurement on round robin samples

■ Presentation of the round robin results

■ Comparison of the round robin results

 

The following topics are also of interest:

 

Additional Topics:

■ Measurement of small optics, e.g. for endoscopes and mobile phones

■ Measurement of inner centration of aspheres

■ Measurement of unmounted aspheres

■ Measurement of free-form surfaces

■ Developments in measuring techniques for aspherical free-form and cylindrical lenses

■ Assembly of Optical Systems

■ Free-Form and Space Optics

■ Other topics related to asphere and free-form metrology or production

D o w n l o a d   h e r e   the Detailed Program!

 

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Y o u r   c h a n c e   t o   j o i n !

■ Would you like to perform measurements and give a presentation? (Deadline November 30, 2024)

■ Would you like to receive more details of the "round robin" samples?

■ Would you like to give a lecture without measurements? (Deadline November 30, 2024)

■ Are you interested in participating?

■ Are you interested in participating in the supporting exhibition? (Deadline March 1, 2025)

 
Please send an e-mail with your request to: Diese E-Mail-Adresse ist vor Spambots geschützt! Zur Anzeige muss JavaScript eingeschaltet sein!

D o w n l o a d   h e r e   your  registration!

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YSA 2025 - Young Scientist Award 

Awarding the 5th Young Scientist Award (YSA) will round out the programme!

In addition to the scientific part of the event, which focuses on the topic of asphere metrology, the CC UPOB e.V. will award a prize for the 5th time in 2025. Young scientists (Bachelor, Master, PhD-Student or Post-Doc up to 3 years after the end of their academic education) have opportunity to present their work to an interested specialist audience during the High-Level Expert Meeting. By a jury of the participants the best work will be selected and priced.

Submissible topics are scientific papers from the following fields of activity:

■ precision methods e.g. MRF, SPDT, IBF ...

■ approaches to additive precise optics production

■ cleaning and coating, multi-layer coatings

■ metrology and data analysis in production chain for aspheres and freeforms

■ ultra-flatness; diffraction base plates; nanostructures

Applicants have the opportunity to apply with an abstract in english with a picture and 250 words by January 12, 2025 at the CC UPOB e.V. office.

At the beginning of the conference, the pre-selected works will be presented by the candidates in a short presentation.
During the breaks, the participants can continue to find out about the topics in a poster session.
At the end of the conference, the award ceremony will take place.

You will find more details in HLEM Call for Papers and also in HLEM Programme Preview.

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Key Dates

Measurement Schedule:

■ Start of measurements:
   April 15, 2024

■ Deadline for performing measurements:
   November 30, 2024

■ Application for measurements:
   closed for HLEM 2025, interested? Please send an e-mail to our administrative office

■ Deadline to submit measured data:
   Not later than 2 weeks after end of your measurement period

 

Participation Schedule:

■ Conference Date:
   March 24-26, 2025

■ PTB-Lab visit:
   March 24, 2025

■ Get Together:
   March 24, 2025; 19:00 (Please find Details below)

■ Conference Dinner:
   March 25, 2025; 19:00 (Please find Details below)

■ Registration Deadline:
   March 1, 2025 extended to March 10, 2025

■ Registration:
   Please register by letter, fax or E-Mail using the registration form.
   Following this you will receive an invoice and confirmation.

 

Organzational Details:

■ Conference Language:
   english

■ Start registration: OPEN
   Autum 2024 (download registration form here)

■ Attendance fees:
   Lecturers: € 250 (1st person)
   Members: € 250
   Students:  € 250
   Non-members / others: € 650

   Please pay in advance after you have received the invoice.

 

Exhibition Schedule:

■ Deadline registration for industrial exhibition:
   March 1, 2025 

 

Submission Details:

■ Documents Required:
   Abstract and Tabular CV
   Please send your Abstract to Diese E-Mail-Adresse ist vor Spambots geschützt! Zur Anzeige muss JavaScript eingeschaltet sein!

■ Abstract Content:
   250 Words, 1-3 Pictures

■ Presentation Duration:
   All Presenters: 20-25 minutes
   Young Scientist Award: 10-15 minutes

■ Final Submission Author & Title:
   December 15, 2024

■ Final Abstract Submission:
   December 15, 2024

■ Final Abstract Submission YSA:
   January 12, 2025

■ Results of Abstract Review:
   within 2 weeks

■ Deadline to submit presentation slides:
   (to download by participants)
   March 24, 2025

 

Travel and Location Details:

■ Date of Meeting:
   March 24-26, 2025

■ Recommended Accomodation:
   We have not reserved a contingent, we recommend the following hotels:
   Best Western City Hotel
   Hotel Deutsches Haus
   Hotel Fürstenhof
   ACHAT Hotel Braunschweig
   Pentahotel Braunschweig

■ Get Together:
   March 24, 2025: Start: 19:00 - Please bring your conference name badge with you!
   We will come together in Restaurant District
   It is located in Ziegenmarkt 1 - 2, 38100 Braunschweig
   Phone: +49 531-4811411
   Please use this link for navigation!

■ Conference Dinner:
   March 25, 2025: Start: 19:00 - Please bring your conference name badge with you!
   We will come together in Restaurant Gastwerk Braunschweig
   It is located in Panther Business Center; Mittelweg 7;38106 Braunschweig
   Phone: +49 531-2371200
   Please use this link for navigation!

■ Conference Location:
   The conference takes place in:
   PTB´s Seminar Center; Bundesallee 100, 38116 Braunschweig, Germany

■ Travel to PTB in Braunschweig:
   You can find here all necessary information for your travel

■ Download:
   Please find all downloadable files of this event here

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Contact:

CC UPOB e.V.
Mr. Heiko Klawitter
Tel.: +49 531 592-5131
Fax.: +49 531 592-69-5131
Please send e-mails to Diese E-Mail-Adresse ist vor Spambots geschützt! Zur Anzeige muss JavaScript eingeschaltet sein!

Bundesallee 100
38116 Braunschweig
Germany