Photographic wide-angle lens of high light intensity - is for miniature cameras with picture size of around 24 by 36 mm
The lens is intended for cameras with an aperture ratio of around 1:2.8 and an image angle of around 60 deg. The lens has a main part in the form of a varied triplet and a negative front meniscus lens attached in front of the trip with a relatively large air separation. The concave surface of the fr...
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| Format: | Patent |
| Sprache: | eng ; ger |
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