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| Chinese National Standard Category: Optical instrument in general |
| English Title: | Bubble classes for optical elements |
| Chinese Title: | 光学零件气泡度 |
| Standard No.: | GB/T 7661-1987 |
| Category No.: | N30 |
| Issued by: | China State Bureau of Standards |
| Issued on: | 1987-04-17 |
| Implemented on: | 1988-1-1 |
| Status: | superseded |
| Superseded by: | GB/T 7661-2009 Bubble classes of optical elements |
| Superseded on: | 2010-2-1 |
| Abolished on: | 2010-02-01 |
| Superseding: | WJ 295-1965 |
| Word Count: | 4000 words |
| Similar Standards: | GB/T 12085.6-2022 GB/T 12085.12-2022 GB/T 12085.2-2022 GB/T 12085.1-2022 GB/T 26332.7-2022 GB/T 12085.4-2022 GB/T 12085.11-2022 GB/T 12085.23-2022 GB/T 12085.17-2022 GB/T 12085.8-2022 GB/T 12085.14-2022 GB/T 26332.5-2022 GB/T 12085.22-2022 GB/T 12085.20-2022 GB/T 26332.6-2022 GB/T 12085.7-2022 GB/T 26332.8-2022 GB/T 12085.3-2022 GB/T 37969-2019 GB/T 26332.1-2018 |
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