FIELD: optical instrumentation, TV lenses. SUBSTANCE: wide-angle lens is made of three components, first one being negative facing space of objects with concavity, second one being positive and third one being positive meniscus facing space of images with concavity. First component is manufactured in the form of meniscus, second component is fabricated in the form of meniscus facing space of objects with concavity. Positive component that can be glued together either form negative meniscus and biconvex lens or from biconvex lens and negative meniscus is positioned between second and third components. EFFECT: enhanced angular field of lens and improved quality of observation. 2 cl, 4 dwg, 4 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| TELESCOPIC SYSTEM | 1996 |
|
RU2106004C1 |
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| 0 |
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SU1778736A1 | |
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|
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| REPRODUCTION OBJECTIVE | 0 |
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SU1714560A1 |
| FAST LENS WITH REMOTED ENTRANCE PUPIL | 0 |
|
SU1432440A1 |
