OBJECTIVE LENS & EYEPIECE
NIGHT VISION LENS
Explore objective lenses and eyepieces for night vision systems. Review focal length, field of view, and other optical specifications to select components for your configuration. Contact us to confirm compatibility and discuss your replacement or bulk purchasing requirements.
NIGHT VISION LENS · EYEPIECE ASSEMBLY
Key Features
Lightweight Eyepiece
With a weight of ≤ 57 g, the eyepiece keeps its contribution to overall device weight low.
25 mm Eye Relief
A specified 25 mm eye relief provides viewing clearance between the eye and the eyepiece.
40° Field of View
Offers a field of view of ≥ 40° for a 17.5 mm image format, supporting an expansive view of the displayed scene.
Large On-Axis Exit Pupil
An on-axis exit pupil diameter of ≥ 14 mm provides a generous pupil aperture for eye alignment.
Aspherical Glass Optics
Uses glass optical elements, including aspherical glass, with an effective focal length of 25.1 ± 0.5 mm.
Immersion Resistance
The eyepiece assembly is specified for immersion at 20 m for at least 2 hours.
Lens & Setup Views
Explore the lens assembly and setup details in the images below.
U.S. Mil-Spec PVS-14 Lens Assembly
NIGHT VISION LENS SPECIFICATIONS
Technical Data
Objective Lens — Optical
| Effective Focal Length | 27 ± 0.5 mm |
|---|---|
| F-number | ≤ 1.23 |
| Field of View | ≥ 40° (for 17.5 mm image format) |
| Lens Material | Glass, including aspherical glass |
| Distortion | ≤ −4.7% (at a semi-field angle of 20°) |
Objective Lens — Physical & Environmental
| Weight | ≤ 41.5 g |
|---|---|
| Immersion | 20 m for at least 2 hours |
Eyepiece — Optical
| Effective Focal Length | 27 ± 0.5 mm |
|---|---|
| Exit Pupil Diameter | ≥ 14 mm on axis |
| Eye Relief | 25 mm |
| Field of View | ≥ 40° (for 17.5 mm image format) |
| Lens Material | Glass, including aspherical glass |
| Distortion | ≤ −5.5% (at a semi-field angle of 20°) |
Eyepiece — Physical & Environmental
| Weight | ≤ 57 g |
|---|---|
| Immersion | 20 m for at least 2 hours |
Eyepiece & Objective Assembly
| Magnification | 1× |
|---|---|
| Diopter Adjustment | +2 to −6 D |
| Field of View — 17.5 mm Image Format | ≥ 40° |
| Field of View — 18 mm Image Format | ≥ 42° |
| Resolution / Application | Designed for use with high-resolution Gen 3 image intensifiers |
| Distortion | < 1%, ± 0.5% at a semi-field angle of 20° |
NIGHT VISION LENS IMAGING
Lens Imaging Comparison
Explore imaging references across lens brands and models, followed by views of distortion, illumination, and resolution across the field.
Comparison Across Brands & Models
01 Outdoor Scene Comparison
Observe scene detail, contrast, and the appearance of illuminated objects across the three lens views.
02 Bright-Light Comparison
Examine flare patterns, reflections, and surrounding detail when a bright light source appears within the field of view.
Optical Test Views
Five reference views highlight different aspects of the image, from grid geometry to fine detail at the center and edge.
01 Distortion & Vignetting
A grid target provides a reference for line curvature and spacing, while the full image shows brightness falloff toward the edges.
02 Blank Background
A plain background makes variations in brightness and shading easier to observe across the image field.
03 Zone Reticle
Concentric reference circles help locate central, intermediate, and peripheral regions when examining brightness across the field.
04 Center Resolution Test
A resolution target at the center provides a visual reference for fine-line separation and central image detail.
05 Edge Resolution Test
A target near the edge provides a reference for off-axis detail and changes in sharpness away from the image center.
Images are provided for visual reference. Appearance depends on the complete optical system, image intensifier, lighting, focus, and camera settings. These images alone do not establish quantitative lens performance or identical test conditions.
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