Features
SIZE

51 mm.54 mm.
Before making your purchase, make sure to check the measurements of your glasses. This model is available in x lens width. All dimensions are listed in millimeters and include lens width, bridge, and temple length.
MATERIAL

Cristal
EASY INSTALLATION

Easy Installation
All our spare parts are designed to fit perfectly with your original model. You can do it yourself at home by following our step-by-step instructions or videos.
Description

Original Ray-Ban RB3690 replacement lenses
Bring your Ray-Ban RB3690 back to life without buying a new pair of sunglasses. These original Ray-Ban replacement lenses preserve the look, optical quality and sun protection of your frame, with free shipping and savings of up to 60% compared with replacing the full sunglasses.
Model compatibility
These lenses are made specifically for the Ray-Ban RB3690. Choose the correct lens size for your frame: even a small difference in millimetres can prevent a proper fit or leave the lens incorrectly seated.
How to identify your model and size
Check the inside of the temple arm for a reference such as “RB3690 54” or “RB3690 51”. RB3690 confirms the model, while the two-digit number is the lens size you need to order.
Main features
- Brand: Ray-Ban
- Compatible model: RB3690
- Product type: original
- Lens material: crystal glass
- Shape: Pillow
- Lens curve: Base 6
- Use: sunglasses
- Audience: adult
- Available diameters: 54mm and 58mm
Available colours
- 31 - Green - Crystal
- B1 - Dark grey - Crystal
- AN – Brown polarized – Crystal
- K8 - Polar dark grey - Crystal
Material, protection and lens options
These lenses are made from crystal glass, a premium material valued for visual clarity and scratch resistance. They provide UV400 protection, blocking 100% of UVA/UVB rays. AN and K8 are polarized lens options, ideal if you want to reduce glare when driving, near water or on bright reflective surfaces.
Why replace only the lenses
If your Ray-Ban RB3690 frame is still in good condition, replacing only the lenses is the smart choice. You restore the optical performance and appearance of your sunglasses while keeping a premium metal frame that already fits you perfectly.
Authenticity and logo
We are an official EssilorLuxottica distributor. As original Ray-Ban lenses, they include the Ray-Ban logo; polarized versions feature “Ray-Ban P”. In our optical workshop in Granada, qualified opticians check every lens with a lensmeter before dispatch.
Frequently asked questions
Are these lenses compatible with other Ray-Ban models? No. They are designed for the Ray-Ban RB3690 and must match the correct size of that frame.
How do I know whether I need size 54 or 51? Look inside the temple arm. The number printed after RB3690 is the lens size to select.
Can I upgrade to polarized lenses? Yes, if you select a polarized option available for RB3690, such as AN or K8. Fit depends on the frame size, not on whether the lens is polarized.
Are they glass or plastic lenses? According to the product attributes, these lenses are crystal glass. That gives a visual feel very close to the original Ray-Ban lens.
Do they protect against UV? Yes. They include UV400 protection, blocking 100% of UVA/UVB rays.
Can I install them at home? The RB3690 is a metal frame, usually opened with a small precision screw. If you are not used to handling eyewear, visit an optician to avoid scratching the lens or stressing the frame.
Tutorial
Installing Ray-Ban RB3690 replacement lenses
Before installation, check that your frame is marked RB3690 and that the lens size matches the option you ordered, such as 54 or 51. Do not try to fit a different size, even if it looks close.
On metal frames like the Ray-Ban RB3690, the safest method is normally to loosen the small rim screw and open the eyewire slightly. Avoid forcing the lens in by pressure, as this may damage the frame or chip the crystal glass.
Work on a clean, soft surface, hold the lenses by the edges and tighten the screw gently. If the frame is bent, the screw is blocked or you are unsure, take the sunglasses to an optical store.
Our Granada workshop handles Ray-Ban replacements every day using professional equipment, including MEI Easy Fit Trend machinery. When in doubt, professional fitting is the safest option.
Be Eco-Friendly

Commitment to Quality and the Environment
At Replacementlenses.net, our commitment to both quality and the environment is at the core of our mission.
We understand the importance of sustainability in today’s world, which is why we offer replacement parts for your glasses. Our goal is to help you extend the life of your favorite eyewear, reducing waste and the need for new purchases.
By choosing our products, you not only save money but also contribute to a more sustainable future. We believe that every small effort counts and that together we can make a big difference in protecting our planet.
Additional information
| Weight | 25 g |
|---|---|
| Dimensions | 20 × 10 × 1 cm |
| Brand | Ray-Ban |
| Audience | Adult |
| Use | Sun |
| Product Type | Original |
| Shape | Pillow |
| Lenses Color | 31 – GREEN – CRYSTAL, B1 – DARK GREY – CRYSTAL, AN – BROWN POLARIZED – CRYSTAL, K8 – DARK GREY POLARIZED – CRYSTAL |
| Lens material | Cristal |
| Lens curvature | Base 6 |
| Width (mm) | 38, 40, 54, 58 |
| Height (mm) | 38, 40, 54, 58 |
| Front Material | Metal |
| Ray-Ban Model | |
| Size | 51, 54 |
| Temples Material | Acetato, Plastic |
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