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DJI O4 Lite Lens Mod

So you scratched your FPV camera lens (yep, I did too). I tried polishing mine, but since it was plastic, I only made it worse. Instead of giving up and buying an entire new o4 Lite module (they don't sell the camera separate), I decided to design a 3d printed housing and swap in a new M12 lens. Here’s how you can do it too!

Upsides

  • Wider FOV

  • Replaceable lens

  • Arguably cooler looking drone

Downsides

  • Extra weight

  • Slight color/hue variation in center of image

  • Slight blurring at edges of image

  • Easy to get dust on sensor during install

Supplies

Tools

  • 3D printer (or access to one)

  • Heat gun

  • Pliers or a vice

  • Torch or lighter (optional, for cleaning stringers)

How to Guide

Step 1: Print and Prep the New Housing

  1. Print your replacement camera housing in PETG for durability.

  2. Remove stringers or leftover filament. A sharp blade works, but a quick pass with a torch can burn away fine strands. Don’t overheat or warp the part.

  3. Use the M12 x 0.5 machine thread tap to cut threads into the housing so the lens will screw in smoothly.

  4. Clean the piece really well to avoid getting plastic dust on sensor.

Step 2: Remove the Old Camera Housing

  1. First remove the camera mounting bracket like in the first picture below or the soft mounting bracket if you have a Meteor 75 Pro.

  2. Then use a heat gun to gently warm the original camera housing. Don’t overdo it, just enough heat to soften the glue. You don't want to destroy the sensor with heat.

  3. Once loosened, carefully pry it off using pliers or a vice. It should come off with minimal effort if the heat is right. Start low and re-heat is better than toasting the thing right from the start. The second image shows red lines where the two pieces separate.

Step 3: Install the New Housing

  1. Dry fit the new 3D printed housing to make sure it lines up with the camera board.

  2. Apply a thin bead of T-7000 glue around the sensor edges.
    ⚠️ Important: Do not touch the sensor or get glue on it!

  3. Press the housing onto the camera board.

  4. Let it cure for 24 hours before moving on.

Step 4: Install the Lens

  1. Once the glue has set, thread the RunCam RC25G FPV lens into the housing.

  2. I left the built-in IR filter in place. The colors look accurate.

Step 5: Mount in the Meteor 75 Pro Canopy

  1. Place the finished camera into your Meteor 75 Pro canopy.

  2. Check the fit and make sure everything is aligned securely.

  3. Fire up a battery and put on your googles. Everything will probably be blurry. Adjust the focus as needed by screwing the lens in or out.

  4. That’s it, you’re ready to fly again!

A simple 3D-printed mount and a new lens turn a damaged O4 Lite into something better than stock IMO. The threaded design makes future repairs easy and has good image quality. At least good enough for my tinywooping purposes.