Viofo CPL-300 Filter | Rear Camera | for A229 & A139 & T130

VIOFO CPL-300 CPL Filter for Rear Cameras (A229 Plus / A229 Pro / A139 / A139 Pro / T130)

Eliminate Glare & Reflections for Crystal Clear Rear Footage

Upgrade your rear dash cam video quality with the VIOFO CPL-300 Circular Polarizing Lens (CPL) Filter. Designed to reduce glare and reflections from rear windshields and interior surfaces, the CPL-300 helps deliver clearer, more vivid footage—especially in bright daylight.

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✅ Key Features

• Anti-Glare Technology – Minimizes light reflections on the rear window and dashboard.
• Enhanced Image Quality – Increases contrast and reduces haze for sharper video.
• Adjustable Polarizing Angle – Rotatable lens lets you fine-tune for optimal clarity.
• Easy Installation – Snap-on fit, no tools required.
• High-Quality Build – Made from durable optical glass with anti-scratch coating.

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How the VIOFO CPL-300 Works

The VIOFO CPL-300 Circular Polarizing Filter is designed to reduce unwanted glare and reflections from reflective surfaces such as rear windshields, glossy interiors, and glass. Installed on the rear camera of supported dash cam models, it filters out polarized light to enhance image clarity, contrast, and color depth—especially during bright daylight.

Unlike ordinary filters, the CPL-300 works like polarized sunglasses for your camera. It allows natural light to pass through while blocking harsh, reflected light that can obscure important details in your footage. The result? Cleaner, sharper video with richer tones and reduced visual distractions.

Whether you're driving under intense sunlight or navigating through reflective urban environments, the CPL-300 ensures your rear camera footage remains clear, vivid, and professional-looking.

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Reduce Glare & Reflections for Sharper Rear Camera Footage

The VIOFO CPL-300 Circular Polarizing Filter is engineered to minimize reflections and glare that commonly affect rear dash cam footage—especially from rear windshields and interior surfaces. By filtering polarized light, it significantly improves video clarity, color accuracy, and contrast, allowing your rear camera to capture crisp, detailed footage even in harsh sunlight or reflective conditions.

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Boost Color Depth and Clarity with the VIOFO CPL-300

The VIOFO CPL-300 Circular Polarizing Filter significantly improves your rear dash cam footage by reducing glare and unwanted reflections. By filtering out scattered light, it enhances color saturation, restores natural contrast, and adds depth to your recordings—especially under harsh sunlight or reflective surfaces. The result? Vibrant, true-to-life video with fewer distractions and more visible details across every frame.

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Protect Your Rear Camera Lens with Confidence

The VIOFO CPL-300 CPL Filter does more than just reduce glare and enhance image quality—it also acts as a protective shield for your rear dash cam lens. By covering the lens, it helps guard against dust, fingerprints, scratches, and everyday wear, ensuring your rear camera stays clean, clear, and fully functional.

Whether you're driving through dusty roads or simply cleaning your rear windshield, the CPL-300 offers an extra layer of defense to keep your footage sharp and your lens in top condition.

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Durable Multi-Coated Glass for Consistent Rear Camera Clarity

The VIOFO CPL-300 is crafted with a premium multi-resistant optical coating, engineered to deliver long-term clarity and performance. Whether you're driving daily or across harsh conditions, this filter is built to last and stay clean.

• Scratch-Resistant Surface – Withstands everyday handling and lens adjustments without degrading image quality.
• Dust-Repellent Coating – Actively reduces dust buildup, helping keep the rear lens clear and low-maintenance.
• Smudge-Free Cleaning – A quick, gentle wipe restores full transparency—no streaks, no residue.

Keep your rear dash cam footage sharp, vivid, and glare-free with a CPL filter designed for endurance and everyday use.

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Quick & Effortless Installation

Installing the VIOFO CPL-300 CPL Filter is fast and frustration-free. Simply align the filter with your rear camera lens and snap it into place—no tools, no hassle. Designed for a perfect fit and easy removal, you can attach or detach it in seconds whenever lighting conditions change.

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Compatible With (Rear Camera Only)

• VIOFO A229 (Rear Camera)
• VIOFO A229 Plus (Rear Camera)
• VIOFO A229 Pro (Rear Camera)
• VIOFO A139 (Rear Camera)
• VIOFO A139 Pro (Rear Camera)
• VIOFO T130 (Rear Camera)

Note: This CPL filter is designed only for rear cameras of the above models. It does not fit front cameras or other VIOFO series.

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What's in the Box

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Why Use the VIOFO CPL-300 on Rear Dash Cams?

Rear dash cameras are especially prone to glare caused by sunlight reflecting off the rear windshield, trunk surfaces, or interior trim. This unwanted reflection can wash out important details in your footage—like license plates, tailgating vehicles, or roadside incidents.

The VIOFO CPL-300 acts like a high-performance polarizing lens, similar to sunglasses for your dash cam. It filters out harsh reflected light, enhances contrast, and delivers sharper, more accurate video—even in bright or high-glare environments. Whether you're driving under the sun, through city glass reflections, or along coastal roads, the CPL-300 helps ensure your rear camera footage is always clean, clear, and reliable.

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When to Remove the CPL Filter

You may want to remove the CPL filter when driving at night or in very dark environments to maximize light intake. The tool-free installation makes it easy to attach or detach as needed.

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Perfect For:

• Daylight driving
• Bright or sunny climates
• Glare-prone rear windows or glossy interiors

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Frequently Asked Questions (FAQs)

Q1: What is the VIOFO CPL-300 used for?
A: The VIOFO CPL-300 is a Circular Polarizing Lens (CPL) filter designed to reduce glare and reflections in footage captured by the rear cameras of select VIOFO dash cams. It improves video clarity and contrast, especially in bright daylight conditions.

Q2: Which dash cam models is the CPL-300 compatible with?
A: The CPL-300 is compatible with the rear cameras only of the following models:

• VIOFO A229 Plus
• VIOFO A229 Pro
• VIOFO A139
• VIOFO A139 Pro
• VIOFO T130

Not compatible with front or interior cameras.

Q3: How does a CPL filter improve video quality?
A: CPL filters reduce glare caused by sunlight reflecting off the rear windshield or interior surfaces. This leads to clearer, more detailed recordings by enhancing contrast and color accuracy—particularly helpful when capturing license plates or following vehicles.

Q4: Can I use the CPL-300 at night?
A: While it’s safe to use, it’s generally recommended to remove the CPL filter at night or in very low-light environments, as it may slightly darken the image. For best performance, reattach it during daytime or high-glare conditions.

Q5: Is the CPL-300 easy to install?
A: Yes! The CPL-300 features a simple, tool-free snap-on design. Just align the filter with your rear camera lens and press it into place. It can also be easily removed when not needed.

Q6: Is the CPL-300 durable?
A: Absolutely. The CPL-300 is made from high-quality optical glass with an anti-scratch coating, offering long-lasting performance and resistance to daily driving conditions.