North Night Vision Technology (NNVT)

North Night Vision Technology Co. Ltd. (NNVT) is a Chinese manufacturer of image intensifier tubes.

It is believed to manufacture image intensifiers using or at least based on production lines and technology purchased from Photonis.

Products

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NVT-1

Gen. 1 image intensifiers introduced in the 1980s.

NVT-2

NNVTs first Gen. 2 image intensifiers introduced in the 1990s.

NVT-3

Introduced in 2006.

NVT-4

Introduced in 2006.

Specifications

Performance parameters	Units of measurement	Values
Resolution	lp / mm	57+
Photocathode Sensitivity	28560 K, uA/lm	600+
	800nm, mA/W	50+
	850nm, mA/W	40+
Signal to Noise Ratio		22+
Luminous Gain	@2x10-5 lx, cd/m2/lx	8K-12K
Phosphor		P22/P43/P45

NVT-5

Introduced in 2018. Only the military grade version features autogating.

Specifications

Performance parameters	Units of measurement	Values
Resolution	lp/mm	64+
Photocathode Sensitivity	28560 K, uA/lm	700-900
	800nm, mA/W	65+
	850nm, mA/W	50+
Signal to Noise Ratio		25+
Luminous Gain	@2x10-5 lx, cd/m2/lx	12K-25K
Phosphor		P22/P43/P45

NVT-6

Introduced in 2018.

Specifications

Performance parameters	Units of measurement	Values
Resolution	lp/mm	64+
High Light Resolution	@ 200lx, lp/mm	48+
Photocathode Sensitivity	28560 K, uA/lm	850-1000
	800nm, mA/W	80+
	850nm, mA/W	60+
Signal to Noise Ratio		28+
EBI	μlx	0.25-
Luminous Gain	@2x10-5 lx, cd/m2/lx	12K+
Halo	mm	0.7-1.0
Phosphor		P22/P43/P45

NVT-7

Introduced in 2020.

Specifications

Performance parameters	Units of measurement	Values
Resolution	lp/mm	71+
High Light Resolution	@ 200lx, lp/mm	48+
Photocathode Sensitivity	28560 K, uA/lm	1000+
	800nm, mA/W	?
	850nm, mA/W	?
Signal to Noise Ratio		28+
EBI	μlx	0.25-
Luminous Gain	@2x10-5 lx, d/m2/lx	12K+
Halo	mm	0.7-
Phosphor		P43/P45