| | Types of optical systems in a lens designer's toolbox (2020) (pencilofrays.com) |
| 83 points by picture on May 23, 2025 | past | 14 comments |
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| | Types of optical systems in a lens designer's toolbox (2020) (pencilofrays.com) |
| 1 point by picture on April 21, 2025 | past |
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| | Ultimate Guide to Lens Design Forms (2020) (pencilofrays.com) |
| 28 points by alrex021 on March 5, 2022 | past |
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