Name: PVS-14 | L3Harris Unfilmed 24UA: HIGH FOM, Hand Select
Brand: Apollo Gear Co.
Price: 4550.0 USD
Availability: OutOfStock

PVS-14 | L3Harris Unfilmed 24UA: HIGH FOM, Hand Select

$4,550.00

Shipping calculated at checkout.

SPEC KEY:

Hand-Select Night Vision includes actual specs of the tube(s) included in your night vision device as listed on the tube manufacturer's data sheet. The data sheet serves as a certificate of conformance to demonstrate that tubes meet or exceed their quality and performance standards.

For a breakdown of L3Harris' various tube options and associated minimum performance, please see our guide to Minimum Specifications and Spots. Guides discussing specs are available under the "Resources" tab

FOM = Figure of Merit

SNR = Signal to Noise (Numeric)

RES (or CR) = Center Resolution (line pairs / mm)

HALO = Halo (mm)

EBI = Equivalent Background Illumination

Provided images through the tubes are captured on a Hoffman Engineering 126A. The digital imaging process can cause slight color and brightness variations between images. White phosphor tubes appear white to the eye. Images may may not depict all cosmetic details in every lighting evironment. Every night vision device has some degree of peppering or small spots at or below .003" (the smallest countable size depicted on a data sheet).

Q: Why do some pictures look more blue vs. green? Is one better? Also, some appear to be brighter than others.

A: Color differences are primarily caused by taking digital images of tubes and are not reflective of tube performance. Tube pictures are provided to show spots and cosmetic blemishes. White phosphor tubes will appear white to the eye - not blue or green, though there can be very slight variation among tubes.

Q: Why do some tubes contain dark spots?

A: Spots are caused by the manufacturing process of night vision intensifier tubes. Spots aren't an indication of performance and exist in nearly every tube (though some tubes may exhibit larger spots than others). Military Spot spec tubes permit countable spots (those larger than .003") in zone 2 and zone 3 (the rings outside of the bullseye on a dart board), whereas aviation spot spec tubes only permit countable spots in zone 3 (outer periphery of the tube, furthest from center).

L3Harris | Minimum Specifications and Spots

Spots

L3Harris Tubes ending with UM or UA (ex. 18UM vs. 24UA) have differing tolerances for dark spots.

UM (military) tubes permit spots greater than .003" (diameter) in Zone 2 and 3. Spots greater than .003" are not permitted in Zone 1.

UA (aviation) tubes limit spots greater than .003" to Zone 3 only. This is L3's strictest spot spec.

Dark spots less than or equal to .003" don't meet the threshold as a countable spot and are commonly referred to as "peppering".

To reference the Zone regions, you can refer to the image above which shows a tube photographed on a Hoffman Engineering 126A test set.

Military Spot Spec:

Spot Size	Zone 1	Zone 2	Zone 3
(Inches)	Limit	Limit	Limit
>.012	0	0	0
>.009	0	0	0
>.006-.009	0	1	1
>.003-.006	0	2	2
Bright Spots	0	0	0
Dark spots </= .003” are acceptable

Despite adding up to 6 total (above), L3 tubes are limited to 4 spots max

Aviation Spot Spec:

Spot Size	Zone 1	Zone 2	Zone 3
(Inches)	Limit	Limit	Limit
>.012	0	0	0
>.009	0	0	0
>.006-.009	0	0	1
>.003-.006	0	0	2
Bright Spots	0	0	0
Dark spots </= .003” are acceptable

Performance

L3Harris unfilmed tubes are available with various minimum performance levels (18, 20, 22, 24).

The higher the performance series number (i.e. 20 vs. 18), the higher the minimum performance.

This performance series is then combined with a spot spec to identify the tube. For example, the 18 performance series, with unlimited FOM ("U"), and Military ("M") spot spec would be 18UM.

Tube Model Performance summary:

18 Series (UM or UA):

SNR: 24.1 minimum
Center Resolution: 64 lp/mm minimum
FOM: 1540 minimum
Halo: 1.0 maximum
EBI: 2.5 maximum

20 Series (UM or UA):

SNR: 28 minimum
Center Resolution: 64 lp/mm minimum
FOM: 1792 minimum
Halo: 1.0 maximum
EBI: 2.5 maximum

22 Series (UM or UA):

SNR: 30 minimum
Center Resolution: 64 lp/mm minimum
FOM: 1920 minimum
Halo: 1.0 maximum
EBI: 2.5 maximum

24 Series (UM or UA):

SNR: 33.75 minimum
Center Resolution: 64 lp/mm minimum
FOM: 2160 minimum
Halo: 1.0 maximum
EBI: 2.5 maximum

1217 Tubes (Custom 24 UA, 36 SNR Min.) :

SNR: 36 minimum
Center Resolution: 64 lp/mm minimum
FOM: 2304 minimum (implied)
Halo: 1.0 maximum
EBI: 2.5 maximum
Aviation Spot Spec (Spots limited to Zone 3 only)

Other:

1610 Tubes / 2376+ FOM models of PVS-31A, BNVD 1531:

SNR: 33 minimum
FOM: 2376 minimum
Center Resolution: 72 lp/mm minimum
Halo: 0.85 maximum
EBI: 2.5 maximum
Military Spot Spec (Spots permitted in Zone 2 and Zone 3)

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Ready to Ship

Full kit contains PVS-14 (Carson Industries) with L3 24UA tube, data sheet from L3Harris, objective lens cover, eyepiece cover, sacrificial window, demist shield, cleaning wipes, Apollo Lens-Pen, AA battery, Apollo stickers / decals and a soft-sided carry case.

Tube Model: CUSTOM CONTRACT: 24UA, 36 SNR Minimum
The following Gen 3 white phosphor, mil-spec tubes from L3Harris are Model 24UA, largely seen as L3's "nicest" tube with respect to a combination of ultra-high minimum performance and clean tube cosmetics

These special order 24UA tubes go a step further and bump up minimum specs to a 36 SNR MINIMUM rather than 24UA's 2160 FOM minimum.

Unlimited FOM, Aviation spot spec
Unfilmed ("filmless"), autogated and come with electromagnetic interference (EMI) shielding.
Aviation spot spec is L3Harris' strictest and only permits spots larger than .003" in zone 3 only.
36 SNR minimum marked on the data sheets.
FOM = SNR x Center Resolution. See "Spec Key" and "Helpful Info" drop-downs above for more info.

-----------------

SN #: 170312067
SNR: 38.7
RES: 72
FOM: 2786
HALO: 0.7
EBI: 1.5

SN #: 170311278
SNR: 37.3
RES: 72
FOM: 2686
HALO: 0.8
EBI: 0.8

SN #: 170311522
SNR: 37.7
RES: 72
FOM: 2714
HALO: 0.7
EBI: 0.5

Versatility

The PVS-14 is generally considered to be the most versatile night vision device available. They can be worn helmet mounted, hand-held, mounted to a telescope, camera, or other magnified optic for astronomy or surveillance. Their small size means they are easy to travel with and carry. They are small enough to fit in a GP pouch on a plate carrier without being obstructive.

Adjustable Gain
PVS-14s have variable gain adjustment and control.

Gain control gives the user the ability to increase or decrease the tube brightness.

Under extremely dark conditions, variable gain (also referred to as manual gain) allows the user to adjust the gain upward, giving a brighter image.

Under higher light conditions, the user can decrease the gain for a cleaner image or to prevent the washout of fine details in high light.

Additional features of the PVS-14 include an onboard IR illuminator and a red LED indicator light (light pipe) internal to the device (behind the tube) which signals IR is active or battery is low.

The PVS-14 allows the user to retain their night adapted vision in one eye while viewing their illuminated surroundings through eyepiece of the PVS-14. On the other hand, binocular night vision gives the user better depth perception, and if it includes articulation, the ability to also use a monocular similar to a PVS-14 (by rotating one pod out of the way).

Tech Specs

Finish	Polymer body (glass/carbon filled)
Capability	Flip-Up On-Off Built-in IR LED with “IR-on” indicator in FOV Low battery indicator in FOV Corrosion Resistance against salt water
Gain Control	Variable (manually adjustable). Requires tube type mx11769 or mx10160 with EGAC added.
Magnification	1x
Lens System	F/1.2
FOV	40°
Range of Focus	0.25 m to ∞
Diopter Adjustment	+2 to -6
Infrared Illuminator	Yes
Power Supply	AA
Battery Life	~40 Hours (Alkaline), up to ~70 Hours (Lithium)
Dimensions	4.5"L X 2.5"W X 2.75"H
Weight	307g (10.8oz), depending on optics and tubes
Standards	Complies with MIL-PRF-49324(CR), MIL-PRF-49427(CR) and MIL-STD-810H (supersedes G).

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PVS-14 | L3Harris Unfilmed 24UA: HIGH FOM, Hand Select

Tech Specs