FIELD: physics.
SUBSTANCE: three-element lens consists of three separate lenses arranged in series on the beam path, the first of which is a negative meniscus whose convex surface faces the object, the second is a positive lens whose first surface is convex and the third element is a negative meniscus whose convex surface faces the object. The second lens on the beam path can be biconvex.
EFFECT: longer focal distance and high image quality.
3 cl, 1 dwg, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| THREE-ELEMENT LENS WITH REMOTE ENTRANCE PUPIL | 2005 |
|
RU2281535C1 |
| FOUR-ELEMENT LENS | 2009 |
|
RU2412455C1 |
| FOUR-ELEMENT LENS | 2010 |
|
RU2445657C1 |
| LARGE-APERTURE LENS | 2007 |
|
RU2346312C1 |
| THREE-ELEMENT TELEPHOTO LENS | 2005 |
|
RU2281537C1 |
| TWO-LENS OBJECTIVE | 2006 |
|
RU2316795C1 |
| EYE-PIECE | 2005 |
|
RU2302024C1 |
| TWO-LENS OBJECTIVE | 2016 |
|
RU2633445C1 |
| DOUBLE LENS | 2021 |
|
RU2763120C1 |
| DOUBLET OBJECTIVE LENS | 2008 |
|
RU2384868C1 |
