Experimental investigations on the manufacturing of fused silica freeform surfaces by means of fine and ultra-fine grinding

Sebastian Henkel; Christian Schulze; Samson Frank; Jens Bliedtner; Edda Rädlein

doi:10.1117/12.2677292

5 September 2023 Experimental investigations on the manufacturing of fused silica freeform surfaces by means of fine and ultra-fine grinding

Sebastian Henkel, Christian Schulze, Samson Frank, Jens Bliedtner, Edda Rädlein

Author Affiliations +

Proceedings Volume 12755, Tenth European Seminar on Precision Optics Manufacturing; 1275502 (2023) https://doi.org/10.1117/12.2677292
Event: Tenth European Seminar on Precision Optics Manufacturing (POM23), 2023, Teisnach, Germany

Abstract

The manufacturing of optical freeform surfaces offers a high potential for optical approaches in the future, since they can make new optical systems lighter and more compact or even enable completely new functions, compared to conventional optics. However, the expanded possibilities go hand in hand with higher complexity in production of freeforms for precision optical applications. This leads to high prices and long delivery times. This paper shows an approach to improve manufacturing of freeforms in small batch sizes with a high degree of customization, by a process chain consisting of (ultrasonic-assisted) pre- and fine grinding combined with ultra-fine grinding using resin bond tools. The process chain is suited for efficient fabrication of optical surfaces. A main focus of the experiments is on reduction of low- and mid-spatial frequency surface deviations, as well as surface roughness. Several different influencing factors in a 5-axis CNC grinding process of fused silica freeforms are investigated and their effects on the resulting surface topography (from the low to the high frequency range of surface deviations) are observed using white light interferometry measurement principles. Various optimization approaches can be concluded.

Citation Download Citation

Sebastian Henkel, Christian Schulze, Samson Frank, Jens Bliedtner, and Edda Rädlein "Experimental investigations on the manufacturing of fused silica freeform surfaces by means of fine and ultra-fine grinding", Proc. SPIE 12755, Tenth European Seminar on Precision Optics Manufacturing, 1275502 (5 September 2023); https://doi.org/10.1117/12.2677292

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
9 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Manufacturing

Silica

Kinematics

Optical surfaces

Freeform optics

Diamond

Optics manufacturing

Show All Keywords

Keywords/Phrases

Search In:

Publication Years