FIELD: physics.
SUBSTANCE: wide-angle eyepiece comprises five components. The first from the plane of the entrance pupil the component 1 - is positive, is glued together from plano-concave 6 and plano-convex 7 lenses and faces with a concave surface towards the plane of the entrance pupil. The second component 2 - is the plano-convex lens facing with a flat surface towards the plane of the entrance pupil. The thrird component 3 - is the plano-convex lens facing with a convex surface towards the plane of the entrance pupil. The fourth component 4 - is positive, is glued together using plano-convex 8 and plano-concave 9 lenses and faces with a convex surface towards the plane of the entrance pupil. The fifth component 5 - is negative, is glued together from biconcave 10 and biconvex 11 lenses. Lenses 6, 9 and 11 are made of heavy flint with identical index of refraction greater than 1.8, and the others - from heavy krone with identical index of refraction which is higher than 1.7.
EFFECT: increase of angular field of vision, increase of distance to the output pupil and improvement of producibility of eyepiece.
3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| 0 |
|
SU67841A1 | |
| WIDE-ANGLE EYEPIECE | 2015 |
|
RU2617139C1 |
| OCULAR WITH EXTERNAL ENTRANCE PUPIL | 2002 |
|
RU2239214C2 |
| 0 |
|
SU79733A1 | |
| OPTICAL SYSTEM OF ENDOSCOPE | 1994 |
|
RU2080632C1 |
| OPTICAL SYSTEM FOR ENDOSCOPE | 1992 |
|
RU2037859C1 |
| EYEPIECE WITH INCREASED EYE RELIEF OF THE EXIT PUPIL | 2017 |
|
RU2652660C1 |
| PROJECTION HIGH-APERTURE LENS | 2008 |
|
RU2379721C1 |
| WIDE ANGLE TELEVISION LENS | 2022 |
|
RU2801083C1 |
| FAST EYEPIECE WITH REMOTE EXIT PUPIL | 2020 |
|
RU2727269C1 |
