File:Voigtländer DE143889C (Heliar II, 1902).svg
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Summary
| Description |
English: Heliar lens design by Voigtländer (1902). Redrawn from DE Pat. 143,889C. |
| Date | |
| Source | Own work |
| Author | Mliu92 |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:05, 15 May 2023 | | 320 × 200 (2 KB) | Mliu92 | Uploaded own work with UploadWizard |
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