Quantum LD19S Thermal Scope ...#77314

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Frost resistant

Digital zoom

Digital zoom

Digital zoom

Video output

Video output

Video output allows to conduct video recording to external devices without the use of additional adapters and camera or camcorders.

Degree of protection IPX4

Degree of protection IPX4

Protected against water sprinkling

External power supply

External power supply

The external power supply prolongs device’s operation time.


Magnification: 1.1x/ 2.2x
Refresh rate: 9 Hz
Range of detection: 500 m
Field of view, HxV: 26.8x20.8°
Operating temperature: -25 ... +50 °С

What's in the box

Thermal imaging scope Quantum LD19S | Carrying case | User manual | Video cable | Hand strap | Automotive cigarette lighter adapter | Spare battery container | Cleaning cloth | Warranty card

Where to buy

MANUAL (PDF) | Quantum thermal imagers. Questions

(Thermal imagers Quantum XD&XQ) Calibration


The Quantum suggests three calibration modes: silent manual mode (“M”), automatic (“A”) and semiautomatic (“H”). The “A” mode implies calibration without user participation (process initiation (actuation of the shutter) takes place automatically). In the “H” mode the user decides on his own if calibration is required based on the image quality. Button “Cal” is pressed in this mode. Manual calibration (“M”) is carried out by pressing the button when the lens cap is closed. The “M” mode is recommended for hunting due to silent operation.

Operating modes

The Quantum suggests three operating modes, each designed to deliver best possible image in specific viewing conditions. The modes are as follows: “City” (enhanced contrast), “Forest” (low contrast) and “Identification” (improved rendering of hot objects’ details).    

Long detection range

High resolution (384x288) microbolometer ensures detailed image and long detection range.  

(Thermal imagers Quantum XD/XQ) Body


The body of fiberglass reinforced plastic is able to effectively withstand impact, moisture and dust which allows the units to be used in extreme conditions. The rubber armouring ensures secure grip of the unit.

(Thermal imagers Quantum XD&XQ) Wide range of operating temperatures

Wide range of operating temperatures

Quantum imaging scopes are effective for the use in low temperatures (-25°C) thanks to the frost-resistant OLED display employed in the unit (image remains the same as when viewing at positive environment temperature).

(Thermal imagers) Brightness and contrast control

Brightness and contrast control

The control wheel located next to the lens allows the user to setup brightness and contrast most appropriate for specific situation.  

(Thermal imagers) Self-contained power supply

Self-contained power supply

The Quantum is powered with four AA size (rechargeable) batteries. The batteries are stored in a container which is then placed in a battery compartment of the unit.      

(Thermal imagers) Video output

Video output

All Quantum models are equipped with an analog video output to enable connection of external recording equipment or transmitting image to the display.

(Thermal imagers) External power supply

External power supply

Operation time of the unit can be significantly increased thanks to the use of external power supplies (for example, Pulsar EPS3/EPS5) that can be connected with a special jack. When used in frosty weather, the power supply can be stored under the clothes.

Electronic components
Frame Rate, Hz 9
Microbolometer resolution, pixels 384x288
Display type OLED
Display Resolution, pix. 640x480
Optical characteristics
Magnification, х 1.1
Digital zoom, x 2
Objective Lens F19/1.2
Field of View,°, horizontal * vertical 26.8x20.8
Diopter adjustment, dptr. ± 5
Range of Detection, m
Range of detection, m (object high*width = 1,7*0,5m) 500
Power Supply
Power Supply, V 4 ÷ 6
Battery type 4xAA
Battery Life, hour 5.5
External Power Supply DC 8.4 ÷ 15
Physical & operational characteristics
Operating Temperature,°С - 25 … +50
Level of Protection (acc. to IEC 60529) IPX4
Dimensions, mm 180x86x58
Weight (without batteries), kg 0.32

Thermal Imaging Scopes Quantum XQ/XD/HD/LD (discontinued). Other modifications

Modification Frame Rate, Hz Magnification, х Range of detection, m (object high*width = 1,7*0,5m) Weight (without batteries), kg
Quantum XQ50 Thermal Scope 50 4.1 ... 16.4 1800 0.43
Quantum XD50S Thermal Scope 50 2.8 1250 0.43
Quantum XQ38 Thermal Scope 50 3.1 ... 12.4 1350 0.35
Quantum XD38S Thermal Scope 50 2.1 950 0.35
Quantum XQ19 Thermal Scope 50 1.6 ... 6.4 680 0.32
Quantum XD19S Thermal Scope 50 1.1 500 0.32
Quantum HD50S Thermal Scope 30 2.8 1250 0.43
Quantum LD50S Thermal Scope 9 2.8 1250 0.43
Quantum HD38S Thermal Scope 30 2.1 950 0.35
Quantum LD38S Thermal Scope 9 2.1 950 0.35
Quantum HD19S Thermal Scope 30 1.1 500 0.32

Accessories See all Accesories

pulsar accessories

The Pulsar neck strap is designed to be fixed to the devices which are equipped with ¼ inch tripod socket. It can be used with thermal imagers Quantum/ Quantum S and night vision devices Challenger and others.

pulsar accessories

Recording resolution: 640х480 pix
Type of memory card: SD

pulsar accessories

External power supplies EPS5 are designed for the use with digital units and NV riflescopes, thermal imaging scopes.

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