FIELD: physics.
SUBSTANCE: lens can be used as a receiving lens in devices with photodetectors, e.g., CCD matrices, including in the infrared region as well. The lens consists of seven components on the beam path. The first component is a single converging-meniscus lens whose concave side faces the object, the absolute value of the curvature radius of the first surface of which is less than that of the second surface. The second component is a converging-meniscus lens whose convex side faces the object and is glued from two converging-meniscus lenses. The third component is a divergent-meniscus lens whose convex surface faces the object. The fourth component is glued from a biconcave and a biconvex lens. The fifth component is a single biconvex lens. The sixth component is glued from a biconvex lens and a divergent-meniscus lens whose concave side faces the object. The seventh component is a single divergent-meniscus lens whose convex side faces the image.
EFFECT: high image quality.
3 cl, 1 dwg, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| HIGH-OUTPUT LENS | 2019 |
|
RU2726263C1 |
| HIGH-APERTURE LENS | 2015 |
|
RU2611106C1 |
| WIDE-ANGLE HIGH-APERTURE PHOTOGRAPHIC OBJECTIVE | 2022 |
|
RU2786368C1 |
| FOUR-ELEMENT LENS | 2010 |
|
RU2445657C1 |
| HIGH-APERTURE LENS | 2014 |
|
RU2576347C1 |
| FAST LENS FOR NEAR IR-SPECTRUM RANGE | 2006 |
|
RU2315341C1 |
| LARGE-APERTURE LENS | 2009 |
|
RU2396581C1 |
| PROJECTION LENS OF GAUSS TYPE | 2007 |
|
RU2343512C1 |
| FAST LENS | 0 |
|
SU1760502A1 |
| LARGE APERTURE LENS | 2020 |
|
RU2737029C1 |
