FIELD: physics.
SUBSTANCE: compact lens of the mid-infrared range is designed for use with the cooled photodetector devices of the mid-infrared ranges. The lens consists of an input and a projection part. The first component of the input lens part is fixed and made as a positive meniscus convex facing the object space, and the second component is movable and made as a single negative and positive menisci convex facing the object space. The projection part is made as a positive meniscus convex facing the object space, and adapted to move along the optical axis. The intermediate image is formed between the input and the projection lens parts. All lenses of the input part contain aspherical surfaces, and the projection part - an asfero-diffraction surface.
EFFECT: ultimate shortening the lens, while maintaining the high image quality.
3 dwg,1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| INFRARED TELEPHOTO LENS WITH TWO FIELDS OF VIEW | 2023 |
|
RU2816830C1 |
| INFRARED TELEPHOTO LENS WITH TWO VISION FIELDS | 2016 |
|
RU2630195C1 |
| OPTICAL SYSTEM WITH REMOTE APERTURES FOR INFRARED SPECTRUM | 2008 |
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RU2386156C1 |
| HIGH-APERTURE LENS WITH OFFSET PUPILS FOR INFRARED AREA OF SPECTRUM | 2008 |
|
RU2379723C1 |
| OPTICAL THERMAL IMAGING SYSTEM FOR MID-INFRARED SPECTRAL REGION | 2014 |
|
RU2567444C1 |
| INFRARED LENS WITH TWO FIELDS OF VISION AND A DISTANT APERTURE DIAPHRAGM | 2019 |
|
RU2726262C1 |
| CATADIOPTRIC LENS ( VARIANTS ) | 2002 |
|
RU2212695C1 |
| OPTICAL THERMAL IMAGING SYSTEM FOR MID-INFRARED SPECTRAL REGION | 2013 |
|
RU2543693C1 |
| OPTICAL SYSTEM FOR THERMAL IMAGING DEVICES | 2010 |
|
RU2449328C1 |
| DOUBLE-SPECTRUM INFRARED LENS HAVING APERTURE DIAPHRAGM IN IMAGE SPACE | 2010 |
|
RU2410733C1 |
