Manufacturing highly precise custom optics – from prototypes to series production, including measurement services and lens assembly
DD-Optik GmbH
Kirchdorf im Wald · GermanyNew on Amplifa
About DD-Optik
Since 1990, DD-Optik GmbH has been manufacturing highly precise, custom optical components at its Kirchdorf im Wald location. The portfolio includes planar substrates, spherical lenses, laser optics, micro lenses for medical technology, radiation-resistant optics for space and reactor applications, achromats, mounted lenses, and special shapes such as D-cut and stripe lenses. Production ranges from prototypes to large series on modern CNC optical machines combined with conventional manufacturing. All optical glasses as well as quartz, silicon, germanium, magnesium fluoride and calcium fluoride are processed; elements with diameters from 3.0 to 250 mm are manufactured with center thickness tolerances from ±0.005 mm, surface qualities up to Lambda/50 PV and microroughness below 2 Å (superpolish). In addition, the company offers metrological and process-related services such as radius, fit and microroughness measurement, MRF correction, centering, edge blackening, and stripping of coatings. Coatings are applied in cooperation with DDO-Coating; lens assembly is also offered as an OEM service. Customers come from laser and laser cutting technology, medical technology, metrology, photographic and exposure optics, as well as aerospace and nuclear and fusion technology.
- Site
- Kirchdorf im Wald
- Processes
- Manufacturing planar substrates, Spherical optics (lenses), Manufacturing laser optics, Micro lenses for medical technology, Manufacturing radiation-resistant optics, Manufacturing achromats (compound lenses doublet/triplet), Mounting lenses / assembly of lenses and mounted optics, Special shapes (double D-cut lenses, stripe lenses, lens with hole, windows)
- Materials
- Optical Glasses, Quartz, Silicon, Germanium, Magnesium Fluoride, Calcium Fluoride, CNC Optical Machining, MRF Finish Polishing
- Certificates
- ISO 9001:2015, ISO 9001
- Founded
- 1990
- Industries
- Laser and laser cutting technology, Medical technology, Photographic/exposure optics, Metrology, Aerospace/communication satellites, Research reactors/nuclear and fusion technology
- 01
Manufacturing of optics (CNC and conventional)
- 02
Superpolish / MRF correction
- 03
Cementing of achromats
- 04
Edge blackening
- 05
Coating (in cooperation with DDO-Coating)
- 06
Assembly of lenses and mounted optics
- 07
Metrological inspection (radii, fit, microroughness, geometry)
Materials and Processes
Optical Glasses
Standard material for lenses, planar substrates, achromats and special shapes in all dimensions up to Ø 250 mm.
Quartz
Material for UV optics, among others for exposure and metrology applications.
Silicon
Material for infrared optics, e.g. in laser cutting applications.
Germanium
Material for infrared optics with high transmittance in the IR range.
Magnesium Fluoride
Material for UV optics, among others for space applications.
Calcium Fluoride
Material for UV optics with high transmission in the ultraviolet spectral range.
CNC Optical Machining
Modern CNC optical machines combine precision with conventional manufacturing technology.
MRF Finish Polishing
Local correction of the fit of customer substrates for the highest surface quality.
Cementing (NOA61/Araldite)
Joining lenses into achromats (doublet/triplet) with UV-curing or heat-curing cement.
Sites
Kirchdorf im Wald
DEHeadquarters and Manufacturing
- Part weight / size
- Ø 3.0 mm to Ø 250 mm
- Lot size
- Prototypes to series production
- Materials
- Optical glasses, quartz, silicon, germanium, magnesium fluoride, calcium fluoride
- CNC optical machines
- Zygo interferometer
- Renishaw interferometer
- SSI stitching interferometer (Zygo)
- White-light interferometer Zygo NewView 9000
- Keyence optical comparator
Optical Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacturing planar substratesOptics manufacturing | – | Ø 250 mm | – | Prototypes – Series production | optical glasses, quartz, silicon, germanium, magnesium fluoride, calcium fluoride |
| Spherical optics (lenses)Optics manufacturing | Center thickness tolerance from ±0.005 mm · < 4 Å | Ø 250 mm | – | – | optical glasses |
| Manufacturing laser opticsOptics manufacturing | < 4 Å | Ø 250 mm | – | – | optical glasses |
| Micro lenses for medical technologyOptics manufacturing | – | Ø 3.0 mm (min) | – | – | optical glasses |
| Manufacturing radiation-resistant opticsOptics manufacturing | – | Ø 250 mm | – | – | special materials |
| Manufacturing achromats (compound lenses doublet/triplet)Joining | – | – | – | – | optical glasses, NOA61 UV cement, Araldite |
| Mounting lenses / assembly of lenses and mounted opticsAssembly | – | – | – | – | – |
| Special shapes (double D-cut lenses, stripe lenses, lens with hole, windows)Optics manufacturing | – | Ø 250 mm | – | – | optical glasses, quartz, silicon, germanium, magnesium fluoride, calcium fluoride |
| Manufacturing infrared opticsOptics manufacturing | – | Ø 250 mm | – | – | silicon, germanium |
| Manufacturing UV opticsOptics manufacturing | – | Ø 250 mm | – | – | quartz, calcium fluoride, magnesium fluoride |
| SuperpolishSurface | < 2 Å | – | – | – | optical glasses |
| Repolishing of customer substratesSurface | – | – | – | – | optical glasses |
| MRF correction (MRF finish polishing)Surface | – | – | – | – | optical glasses |
| Centering of lensesOptics manufacturing | – | – | – | – | optical glasses |
| Edge blackening of lensesSurface | – | – | – | – | – |
| Stripping of coatingsSurface | – | – | – | – | – |
| Coating of lenses (in cooperation with DDO-Coating)Surface | – | – | – | – | optical glasses |
| Radius measurement by laser interferometryInspection | ±3 µm (up to r=±500 mm), ±1% (from r=±500 mm) | r = ±1500 mm | – | – | – |
| Fit measurement (SSI stitching interferometer)Inspection | – | – | – | – | – |
| Determination of microroughness (white-light interferometry)Inspection | – | – | – | – | – |
| Measurement of geometric parameters (center thickness, diameter, freeform geometries)Inspection | – | – | – | – | – |
6 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC optical machine | – | – | – | – | Kirchdorf im Wald |
| Zygo interferometer | Zygo | – | Radius measurement up to r=±1500 mm | – | Kirchdorf im Wald |
| Renishaw interferometer | Renishaw | – | – | – | Kirchdorf im Wald |
| SSI stitching interferometer | Zygo | – | – | – | Kirchdorf im Wald |
| White-light interferometer | Zygo NewView 9000 | – | – | – | Kirchdorf im Wald |
| Optical comparator | Keyence | – | – | – | Kirchdorf im Wald |
Additional services
Reference customers
Quality and Measurement Services
Production is supported by a certified quality management system in accordance with ISO 9001:2015. Radii, fit, microroughness and geometric parameters are measured on Zygo and Renishaw interferometers, a Zygo NewView 9000 white-light interferometer and a Keyence optical comparator; measurement data is provided as DAT and PDF files.
| Evidence | Kirchdorf im Wald |
|---|---|
| ISO 9001 |
History
- 1990
Taken over as a partner for high-quality optics – high-quality optics since 1990.