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1G46 thermal imager retrofit

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A recent production patent filing shows that the Soviet era 1G46 (part of the 1A45 FCS) is being retrofitted with a thermal imaging channel. Named 1G46TT, the retrofit encompasses a major rework of the entire module.  One of the major visual changes is the complete removal of the old faceplate of the sight and replacing it with a screen, indicating that the sight is now equipped with more advanced electronics and no longer relies on conventional mirror-based daylight optics as on the standard 1G46.  Another interesting observation is that the retrofit retains the parallelogram mechanism, which most likely indicates that the sight block has not received independent stabilisation, unlike other modern Russian sight modules like Sosna-U. This means that, to retain accurate LoS and alignment with the barrel, mechanical input from the gun breech trunnion will be transmitted via a parallelogram arm.  With a high probability that the new 1G46TT has received a thermal imaging chan...
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"AGAVA" - "AGAVA-2" and its confusing history

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When covering Soviet sight technology there are always some interesting designs and approaches to solving an issue. It is a common fact that the Soviet Union in the 1980s-1990s was quite behind in thermal sight technology. Only in the 1990s, but to be specific in 1992, the Soviet Union now Russia started to field small batches of thermal sights on their tanks, primarily T-80Us and some of the early T-90 variants, which just recently entered service. Russia's journey through creating its own domestic thermal sight traces back to 1982.  The 1980s were quite an important time for the 'Krasnogorsk Factory named after S.A Zverev', which is still to date an Optical Engineering and Optoelectronics factory. The factory is primarily known for making domestic Soviet cameras back in the day. However, that's not the only thing that the factory has produced back then.  Close to the mid-1980s, the facility was contracted to develop new thermal sight technology for the Soviet Ministry...
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Soviet Union/Russian thermal sight development history

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Related topics:  "AGAVA" - "AGAVA-2 "and its confusing history   Thermal imagers were classed as; Gen-I, Gen-II and Gen-III. Gen-I sights featured the most basic technology due to them being the first of their type. Gen-II sights commonly improved on Gen-I technology by utilizing similar but more refined technical advancements or used completely new methods. Gen-III sights used new advanced technology that is no longer associated with Gen-II and additionally features new materials for photo-elements and ways of processing. Image 1 (For full resolution open the image in a new tab) The table above represents domestic Soviet and early Russian thermal modules/sights.  Generations are split into 3 different time periods, Gen-I sights primarily appeared in the 1980s but also made appearances in the 1990s, Gen-II sights appeared in the 1990s and Gen-III sights appeared in the late 1990s and 2000s.  Gen-I systems: Utilize linear photo-receiver with 2 types of indicators; b...
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