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Ferolix STP-8x42F 8×42 Laser Rangefinder Binoculars | Flat-Back Roof Prism
Product Details
Standard 8×42 Optical Configuration
The STP-8x42F uses an 8×42 optical system with roof prisms, phase and dielectric coatings and FMC broadband multilayer anti-reflection coating.
The optical system provides ≥87% transmission, 6.1° field of view, 5.25mm exit pupil and 21.1mm eye relief.
Long-Range Distance Measurement
The integrated rangefinder uses a 905nm semiconductor laser with Class 1 laser classification.
Available ranging configurations include 5–1500m, 5–1800m and 5–2400m. Ranging accuracy is specified as ±0.5m + 1‰, with measurement time ≤0.3 seconds under high-reflection target conditions.
Multiple Field Measurement Modes
The STP-8x42F supports ordinary distance measurement, continuous SCAN, two-point height measurement, angle measurement and horizontal distance measurement.
The ranging system uses processing functions such as multi-point averaging, distance gating and interference filtering.
Lightweight Flat-Back Design
The flat-back STP configuration weighs approximately 790g and measures about 146 × 111 × 51mm.
The housing uses magnesium alloy and modified PVC rubber, with IP67/IP65 protection specified. A 1/4"-20 tripod interface is available as an option.
Key Specifications
| Specification | STP-8x42F |
|---|---|
| Magnification | 8× |
| Objective Diameter | 42mm |
| Objective Configuration | F |
| Field of View | 6.1° |
| FOV at 1000m | 106.6m |
| Exit Pupil | 5.25mm |
| Eye Relief | 21.1mm |
| Optical Transmission | ≥87% |
| Prism Type | Roof Prism |
| Laser Wavelength | 905nm |
| Laser Class | Class 1 |
| Ranging Options | 5–1500m / 5–1800m / 5–2400m |
| Ranging Accuracy | ±0.5m + 1‰ |
| Measurement Modes | Distance / SCAN / Height / Angle / Horizontal Distance |
| Protection | IP67/IP65 |
| Dimensions | 146 × 111 × 51mm |
| Weight | Approx. 790g |
| Operating Temperature | -20°C to +50°C |
What is the STP-8x42F?
It is an 8×42 Laser Rangefinder binocular using a flat-back roof prism design and integrated 905nm laser ranging system.
What does the F configuration mean?
The product specification identifies ED and F as different objective-material configurations within this product family.
How far can it measure?
Depending on configuration, the specified ranging distance is up to 1500m, 1800m or 2400m.
B2B & OEM/ODM
Ferolix works with Optical Distributors, importers and brands worldwide. The STP-8x42F can be supplied as a standard product or considered for OEM, ODM and private-label programs.
Available customization can include product configuration, logo customization, packaging and product development according to project requirements.
Specification | 8×42 | 10×42 |
|---|---|---|
Magnification | 8× | 10× |
42mm (ED or Standard objective, optional) | ||
Exit Pupil | 5.25mm (brighter in low light) | 4.25mm (standard daylight) |
Eye Relief | 21.1mm (comfortable with glasses) | 15.1mm |
Field of View | 6.1° (106.6m @ 1000m / 319.6ft @ 1000yds) | |
Resolution | 4.2″ center field | |
Light Transmission | T ≥ 87% | |
Prism / Coating | Roof prism, phase + dielectric coating; FMC broadband multi-layer | |
Diopter | ±5D | |
Ranging | Class 1, 905nm; 5–1500 / 5–1800 / 5–2400m; accuracy ±0.5m + 1‰; ≤0.3s | |
Modes | Single / SCAN / Height / Angle / Horizontal Distance | |
Display | 160-segment monochrome LCD | |
Battery | CR2 (3V) or built-in rechargeable Li-poly; ~10,000 continuous readings | |
Body | Magnesium alloy + rubber armor; IP67/IP65; flat or raised rear cover | |
Dimensions / Weight | 146 × 111 × 51 mm; 790g (flat) / 800g (raised) | |
Operating Temp | −20°C ~ +50°C | |
Best For | Low-light, wide scanning, handheld, eyeglass wearers | Open terrain, long-range detail identification |
binoculars="" model="" selection="" objective="" 42mm="" ed="" or="" standard="" exit="" 5.25mm="" brighter="" in="" low="" 4.25mm="" eye="" 21.1mm="" comfortable="" with="" field="" of="" 106.6m="" 1000m="" 319.6ft="" center="" light="" t="" prism="" roof="" phase="" dielectric="" fmc="" broadband="" class="lark-record-clipboard" accuracy="" 0.5m="" single="" scan="" height="" angle="" horizontal="" 160-segment="" monochrome="" cr2="" built-in="" rechargeable="" 000="" continuous="" magnesium="" alloy="" rubber="" flat="" raised="" rear="" dimensions="" 790g="" 800g="" operating="" c="" best="" wide="" eyeglass="" open="" long-range="" detail="" both="" models="" share="" the="" same="" ranging="" body="" and="" accessories.="" only="" differences="" are="" pupil="" relief="" choose="" by="" how="" you="" use="" data-lark-record-format="docx/record">
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