ND TELEPHOTO FOCAL LENGTHS ZOOM LENS SYSTEM WHOSE ZOOM RANGE COVERS BOTH WIDE-ANGLE A

• 1. 一种长焦距大口径天文望远镜光学系统 [P] . 中国专利： CN112394485A . 2021-02-23
• 2. 具有扫码观看系统的固定式可变焦距电子观景望远镜 [P] . 中国专利： CN212694508U . 2021-03-12
• 3. ND TELEPHOTO FOCAL LENGTHS ZOOM LENS SYSTEM WHOSE ZOOM RANGE COVERS BOTH WIDE-ANGLE A [P] . 英国专利： GB2051400A . 1981-01-14

  机译： 变焦范围广的ND望远焦距变焦镜头系统

• 4. Wide-angle large-aperture zoom lens - with correction over whole range of focal lengths and focus [P] . 德国专利： DE2533194A1 . 1976-02-12

  机译： 广角大光圈变焦镜头-可在整个焦距和焦距范围内进行校正

• 5. Zoom lens able to obtain focal lengths beyond the zooming range [P] . 美国专利： US4711534A . 1987-12-08

  机译： 变焦镜头能够获得超出变焦范围的焦距

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