MHNV MH-LRF-20K Laser Rangefinder

Engineer Manager Name: Jacky

WhatsApp/ Wechat: 0086-187 9245 6795

Email: mh_elec@126.com or jacky@mh-elec.com

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MHNV "LRF-20K Laser Rangefinder" (hereinafter referred to as MH-LRF-20K) integrates a 7x medium - magnification direct-view optical system and a 20km ultra-long-range laser ranging function. It is an intelligent, portable, monocular hand-held direct-view optical laser rangefinder. It has functions such as ultra-long-distance and high-precision single-shot ranging, continuous ranging, relative ranging of multiple targets, self-positioning, and target positioning. The direct-view optics have no delay or frame drop, and it can still be used for approximate ranging in a degraded mode without power. It is also equipped with sufficient expansion interfaces to meet different application scenarios, which can be used for environmental reconnaissance and mapping, artillery fire correction, etc.

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Working Principle

1. The 7x optical module magnifies the image within the field of view through the transmission,reflection, and refraction of light by lenses and prisms.

2. This product can perform laser ranging on the target to obtain the distance between the observation point and the target.

3. This product is equipped with an electronic compass accelerometer unit to measure the azimuth angle, pitch angle, roll angle, etc. between itself and the target.

4. This product has a GPS/BeiDou/Glonass positioning unit, which can receive local satellite information for self-positioning and calculate the local magnetic declination and meridian convergence angle.

5. This product can calculate the position coordinates of the target by combining the data of multiple sensors mentioned above, so as to perform target positioning, and can provide the geographical coordinates and projection coordinates of the target in multiple coordinate systems.

6. It has a complete RS232 interface, which can realize remote data transmission and control of this product.

7. It has multiple expansion interfaces, which can access digital CMOS optical units and medium-long -wave infrared units, and can be expanded with HDMI output, USB data import/export, and software upgrade functions.

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Product Features

1. It can observe and aim at the target with 7 times white light magnification, without delay and frame drop, and can roughly measure the distance without battery, and use standard dense optical reticle.

2. It can temporarily record up to 10 recent targets, support relative distance measurement, angle measurement, height measurement, etc. of up to three targets, and support simultaneous distance measurement and display of three targets in front, middle and back.

3. It can perform self-positioning and target positioning, calculate the distance between itself and the target, the angle between itself and the target, etc., and can be externally triggered through the aviation plug line.

4. It can accurately and automatically calculate the magnetic declination of the location of the device,and display the true north angle/local azimuth).

5. It can accurately and automatically calculate the meridian convergence angle of the location of the device, and display the plane coordinate azimuth.

6. It can expand the infrared/low-light CMOS unit to cope with more complex application scenarios.

7. It has a multi-functional aviation plug interface, including RS232, DC12V, and remote ranging button; including an external multi-optical path module interface.

8. With high-definition video output function, the local OLED display can also be connected to an external HDMI high-definition video display device.

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Performance parameters

1.Optical Technical Parameters
Category	Item	Parameter
Optical performance	Optical magnification	7x±0.3x
	Field of view	6.740.3° (Field of view:112m@1000m)
	Focus range	50m~00
	Focus adjustment method	Manual focus
	Aperture	42mm
	Diopter	-5SD~+5SD
	Crosshair reticle style	6000MIL
Function	Milliradian crosshair illumination	5 gears
2. Laser Ranging Technical Parameters
Category	Item	Parameter
Ranging performance	Laser wavelength	1535nm (Eye safety)
	Beam divergence	S0.5mrad
	Minimum range	50m
	Maximum range .	Large target ≥23km
		Vehicle target ≥18km
		Personnel target ≥29km
		UAV target ≥25km
	Distance measurement accuracy	±5m
	Measurement frequency	1Hz~5Hz
	Measurement logic	Up to three targets
	Measurement resources (laser life)	> 50,000 measurements
	Distance measurement record	Last 10 goals
Ranging function	Unit	Meter; Yard; Foot
Ranging function	Relative distance measurement	Support relative distance measurement and positioning of three target points
3.Positioning Technical Parameters
Category	Item	Parameter
Positioning performance	Positioning mode	GPS/BeiDou/Glonass/Combination
	Own positioning accuracy	Horizontal 2.5m (CEP), Elevation 10m (PE)
	Target positioning accuracy	S20m
	Positioning frequency	1Hz
	Coordinate system	Geodetic coordinate system: SK42/WGS84
	Coordinate system	Plane coordinate system: GAUSS 6°
4.Directional Technical Parameters
Category	Item	Parameter
Directional performance	Azimuth measurement range	00-359°
	Azimuth measurement accuracy	20.3(5Mil)(RMS,host inclination angle is 0°)
	Azimuth accuracy after map correction	30.06°（1Mil)
	Pitch measurement range	+90°--90°
	Pitch measurement accuracy	≤0.1° (2Mil) (RMS.@-81~81°)
	Roll measurement range	+180°--180°
	Roll measurement accuracy	50.19(2Mil)(@-65
	Compass calibration	Manual
	Angle unit	Degrees, mils
5.Storage and Browsing Technical Parameters
Category	Item	Parameter
Storage and browsing	Storage capacity	128G
Storage and browsing	File export	USB/wifi export
6.Display Technical Parameters
Category	Item	Parameter
Display performance	Display type	OLED
	Display resolution	1920*1080
	Display size	0.71 inch
	Exit pupil diameter	8mm
	Exit pupil distance	18mm
Screen protection	Close to prevent light leakage	When your face moves away from the eyepiece, the screen automatically turns off, when your face is close to the eyepiece, the screen automatically lights up.
7.External Interface Technical Parameters
Category	Item	Parameter
Multi-function data line interface	Distance measurement button	Yes
	External power interface	12V（±3V）
	External control command interface	RS232
Video interface	HDMI
8.Continuous Working Time Parameters
Category	Item	Parameter
Continuous working time	Working time	≥10 hours (21700*3, @20℃, distance measurement 1 time/min)
	Battery installation method	Each section can be installed in either direction
	External power supply	≥224 hours
	Lithium battery type	Low temperature 3*21700 lithium battery
9.Physical Parameters
Category	Item	Parameter
Physical parameters	Dimension	≤190mm240mm100mm
	Weighm	2.5kg
10.Environmental Adaptability Parameters
Categony	Item	Parameter
Environmentul aduptubility	Protection level	IP67
	Operating temperature	-40℃~60℃
	Storage temperature	-50℃~70℃ (0℃~40℃ is the best)
11.Environmental Measurement Parameters
Category	Item	Parameter
Temperature	Meusuring range	-40℃-60℃
Temperature	Measuring accuracy	+1℃
Humidity	Mcasuring range	0%RH-100%RH
Humidity	Meusuring uccuracy	±3%RH （15%RH-90%RH)
	Meusuring uccuracy	5%RH（The remaining)
Ait pressure	Measuring range	200hPa~1100hPa
Ait pressure	Measuring accuracy	+2hPa

Engineer Manager Name: Jacky

WhatsApp/ Wechat: 0086-187 9245 6795

Email: mh_elec@126.com or jacky@mh-elec.com

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