Thanks! The prototype is being tested in a RV4 in the US. It's all handmade with very high quality components. Price is 850-900 € depending on options. Of course, you could get a real WWII gyrosight for only a little more money but it would be too bulky and heavy for a ULA. I don't have plans to sell, the mechanics and electronics are much too complex to be described in a plan.
This is amazing! Is there a specific lens shape that's required? Perhaps planar convex or double convex? Also what happens if you don't set the focal point of the lens, is it just blurry or does it not set the reticle at the point of infinity?
It's a planar convex lens. Yes, if focal point is set incorrectly, crosshair doesn't stay on target and appears blurry if camera focus is set at infinity (like most onboard/action cameras). 1% deviation from focal length can already make a difference.
Thank you! The variometer has been updated. It's now a real barometric variometer. I can change my Arduino programming code so that the vario displays either the real m/s sink rate or the sinkrate scaled down to 1/6. A Kalman filter smoothes out sudden pressure changes, enhancing scale appearance of the needle movement. In a few weeks, I'll post a video of the pan/tilt mechanism of the onboard FPV camera which also features a custommade radio controlled servo motor focus to toggle between infinity focus for the gunsight and short distance focus for the working instruments.
How is the rest of the build going? If the attention to detail is the same as for the sights a functional nano scale instrument panel wouldn't surprise me 😂🎉
Watch the video in the link. The 2019 version of the Revi 16 in this video only had partial collimation: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-sq_QEPJpc90.html
These sights work just like the real ones. It's for the optical effect, not as an aiming device for real projectiles like on a real plane. (Though, you could use it for that if it was legal). The circle with center dot always points precisely ahead, no matter how you turn the head/camera.
Could you cite the patent you referenced for the project? I can extrapolate the basics of the reflex design, however it would be great to read the original document! Is the housing resin printed? Interested in your construction technique; I must say you did a fairly nice job, it looks flawless! I spend way to many hours sifting through patents myself! ;-] I occasionally also find myself looking through patents of old bomber technology Here is a neat one from 1948: US2434109A "AIRCRAFT GUN SIGHT HAVING, ADJUSTABLE TRANSPARENT REFLECTOR MEANS"
@@tim79de Thanks for the insight, I happened upon US2405263A & US2434109A but couldn't quite find it so thank you! Is the housing resin printed? The fit and finish is fantastic. Have you ever thought of doing videos detailing your journey of constructing the parts and details about the assembly. I guarantee there are many people that would love to see the inner workings of your many models other than myself!
Really nice! Can you explain how is it made? I understand that there's the led ligt source, i guess a first mirror ti deflect 45° the light, then I see the last lense which seems a convex lens. But how did you get the collimation? Which piece of optic did you use? if you like to share. Thanks
For perfect collimation, the reticle mask has to be exactly at the focal point of the convex lens (focal length). If it's too close, the aiming point moves, if it's too far, the image is blurred. Longer focal length (angled tube extension) makes less image distortion. Please understand that I cannot reveal all the production details. The hardest part is the production of a very small, lightproof reticle mask with extremely fine transparent lines.
I do not understand. From where comes the image? This is a FPV Camera. It records image to FPV Goggles. It does not project something. Please give more informations.
This is an exact 1/6 replica of a real reflector gunsight. The image is produced by am illuminated reticle which projects the circle and dot onto the angled glass at infinity. Please google "reflector sight" for optical details.
@@txm100 he's a normal sized human that flies in little planes. use the information that's literally in the title: F P V and that little noggin of yours to figure out it's for a camera to see through while flying
@@Lensr why so aggressive? I still dont get it. Why would you put such a sight in front of a stationary camera? That defeats the whole point of the reflex sight. you could just use a software overlay in you video feed.
@@txm100 because that's how they do it in real planes and this is a scale model. Plus, these planes may have head tracking systems where the camera turns with the pilots head, and a fixed reticle would be in the wrong place if that were the case
Wondering where you found drawings to make such an accurate replica! I'm working on one for a Sim and frankly trying to model it without good plans is a challenge.
My email: scale_fpv@yahoo.com I can send you a usable drawing. Dimensions might only be 95% accurate, some sections had to be modified to make a functional sight.
Thank you! Focal length is 41 mm, 9.5mm lens diameter. The real one had a 3 lens setup with short FL, but for simplicity and little distortion I chose a long FL with the vertical extension tube. Combiner is beam splitter glass.
