FIELD: physics.
SUBSTANCE: optical system for a thermal imaging device comprises, arranged in series on the beam path, an input lens which constructs a real intermediate image and comprises a negative and a positive meniscus, and a projection lens mounted in front of a photodetector and comprising, arranged in series on the beam path, a first meniscus, a second negative meniscus whose convex side faces the photodetector, a third positive meniscus whose convex side faces the object space, and a fourth positive meniscus whose convex side faces the photodetector. In the input lens, the negative meniscus lies first on the beam path and after the positive meniscus there is an additional negative meniscus whose convex side faces the real intermediate image. In the projection lens, the first meniscus is positive and its convex side faces the photodetector, and the fourth meniscus is located between the third meniscus of the projection lens and the photodetector.
EFFECT: high resolution of the optical system of the thermal imaging device while maintaining compactness thereof.
1 tbl, 1 dwg
Title | Year | Author | Number |
---|---|---|---|
OPTICAL SYSTEM FOR THERMAL IMAGING DEVICES | 2010 |
|
RU2449328C1 |
OPTICAL THERMAL IMAGING SYSTEM FOR MID-INFRARED SPECTRAL REGION | 2013 |
|
RU2543693C1 |
OPTICAL THERMAL IMAGING SYSTEM FOR MID-INFRARED SPECTRAL REGION | 2014 |
|
RU2567444C1 |
COMPACT LENS OF MID-INFRARED RANGE | 2016 |
|
RU2621366C1 |
OPTICAL SYSTEM WITH REMOTE APERTURES FOR INFRARED SPECTRUM | 2008 |
|
RU2386156C1 |
METHOD OF COMPENSATING FOR SIGNAL IRREGULARITY OF PHOTOSENSITIVE ELEMENTS OF MULTIELEMENT PHOTODETECTOR | 2010 |
|
RU2449491C1 |
OPTICAL SYSTEM FOR IR SPECTRAL REGION (VERSIONS) | 2006 |
|
RU2338227C2 |
HIGH-APERTURE LENS WITH OFFSET PUPILS FOR INFRARED AREA OF SPECTRUM | 2008 |
|
RU2379723C1 |
INFRARED LENS WITH TWO FIELDS OF VIEW | 2023 |
|
RU2815613C1 |
INFRARED OBJECTIVE LENS WITH TWO FIELDS OF VISION AND REMOTE APERTURE DIAPHRAGM | 2009 |
|
RU2400784C1 |
Authors
Dates
2014-08-20—Published
2013-04-03—Filed