FIELD: optics.
SUBSTANCE: eyepiece comprises, in order from an object, a first positive lens a second negative lens and a third positive lens. Surface of first lens on object side has a convex shape, surface of second lens on observation side has a concave shape, and following expressions are satisfied: 0.65 < f11/f < 1.00; -0.75 < f22/f < -0.30 and -100,00 < (r2b+r1a)/(r2b-r1a) < -5.00, where f is focal distance of eyepiece, F11 is focal distance of surface of first lens on object side, F22 is focal distance of surface of second lens on observation side, R1A is radius of curvature of surface of first lens on object side and r2b is radius of curvature of surface of second lens on observation side.
EFFECT: technical result is increase in distance from display surface to surface of first lens during high magnification.
8 cl, 13 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| EYEPIECE WITH WITHDRAWN PUPIL | 2012 |
|
RU2498364C1 |
| EYEPIECE | 2010 |
|
RU2439631C1 |
| ZOOM LENS, OPTICAL APPARATUS AND ZOOM LENS MANUFACTURING METHOD | 2012 |
|
RU2602406C2 |
| WIDE-ANGLE EYEPIECE | 2015 |
|
RU2617139C1 |
| VARIABLE FOCUS LENS, OPTICAL DEVICE, AND ZOOM LENS MANUFACTURING METHOD | 2013 |
|
RU2614658C2 |
| EYEPIECE | 2017 |
|
RU2690044C2 |
| VARIABLE FOCUS LENS, OPTICAL DEVICE, AND ZOOM LENS MANUFACTURING METHOD | 2012 |
|
RU2679488C2 |
| OPTICAL SYSTEM HAVING A REFRACTING SURFACE AND A REFLECTING SURFACE, AND AN IMAGE CAPTURING DEVICE AND A PROJECTION DEVICE, WHICH INCLUDE IT | 2018 |
|
RU2699312C1 |
| EYEPIECE WITH PINHOLE PUPIL | 2015 |
|
RU2585892C1 |
| EYEPIECE | 0 |
|
SU1728837A1 |
