Gratis Free shipping on qualifying orders
Certified EssilorLuxottica distributor An international benchmark for Ray-Ban and Oakley replacement parts Over 600,000 glasses restored in 50+ countries New High-precision custom engraving on your lenses 3-year warranty on all replacement parts Compatible Quality and savings to renew your glasses Certified EssilorLuxottica distributor An international benchmark for Ray-Ban and Oakley replacement parts Over 600,000 glasses restored in 50+ countries New High-precision custom engraving on your lenses 3-year warranty on all replacement parts Compatible Quality and savings to renew your glasses

All Ray-Ban replacement lenses →All original Ray-Ban lenses →

Original product Original lenses Ray-Ban RB3766CH
Ray-Ban

Original Ray-Ban RB3766CH lenses

Bring your Ray-Ban RB3766CH glasses back to life with a pair of original lenses, made for this model and bearing the original logo.

Complete pair Original logo
$ 85.62 from · price per pair
Select the lens sizeChoose your lens size
Choose the color and coatingChoose a color
Optional
Your configurationOriginal lenses RB3766CH
$ 85.62 per pair
Model
Ray-Ban RB3766CH
Product
Original pair · with Ray-Ban logo
Choose the options to see availability
Quantity: 1 Total $ 85.62
3-year warrantyOn all replacement parts
Check the model and lens size. 54 and 56 mm lenses are not interchangeable. This pair is only for the Ray-Ban RB3766CH.
Before you choose

Find the right lens size for your RB3766CH

The inscription on the inside of the arm lets you confirm the model and exact lens measurement without visually comparing frames.

Inscription on the inside of the arm: RB3766CH ··· 54□·· 145Example for guidance only. The position and order of the codes may vary depending on the frame.

How to read the inscription

In an inscription such as RB3766CH ··· 54□·· 145, each part has a purpose:

RB3766CHModelMust match this product.
···Frame colorIdentifies the finish of the frame front.
54Lens sizeThis is the size you need to select.
··BridgeThis is not the lens size.

This reference comes in 2 sizes. Find the number right before the □ symbol on your arm and choose that same lens size:

  • 54□ → 54 mm
  • 56□ → 56 mm

The number after the □ is the bridge: it isn't used to choose the lens. Can't read it? Measure your lens from side to side at its widest point; that measurement in millimeters matches the lens size.

Product and model

Ray-Ban RB3766CH

The RB3766CH has a metal frame. This pair of original lenses keeps the geometry, beveling and fit designed for the model; you just need to confirm the exact reference and lens size.

Reference
RB3766CH
Available lens sizes
54 and 56 mm
Identification
Original logo
Compatible frameMetal
Packaging1 pair
ManufacturingOriginal Ray-Ban
Product contents

What you'll receive with your order

1Original right lens with Ray-Ban logo
2Original left lens with RB engraving
3Selected color, coating and lens size
CristalesRepuesto technician checking a lens in the Granada workshop
Specialists since 2018Original product with specialist support
Why choose ReplacementLenses

Origin, compatibility and contents explained before you buy

We work with original replacement parts and help you confirm the model and lens size to reduce mistakes before we prepare your order.

EssilorLuxottica Ray-Ban Certified distributor
since 2018
Certified distributor

ReplacementLenses has been a certified EssilorLuxottica distributor since 2018.

Verifiable original

Ray-Ban pair with the original markings for the variant.

Guided compatibility

We explain where to find RB3766CH and how to tell the 54 and 56 mm lens sizes apart.

3-year warranty

Coverage against manufacturing defects and after-sales support.

Meet our team Check compatibility
Installation guide

How to replace the lenses on your RB3766CH

The metal frame uses a rim closed with a screw. Work on a protected surface and avoid forcing the lens or bending the frame front.

Guide specific to the RB3766CHStep-by-step installation
ReplacementLenses · YouTube
More information

Everything about this replacement part for the Ray-Ban RB3766CH

Restore Your Ray-Ban RB3766CH with Original Replacement Lenses

Bring your Ray-Ban RB3766CH sunglasses back to life with official replacement lenses. These are 100% original Ray-Ban parts, manufactured and distributed by Luxottica, ensuring perfect fit, optical quality, and the authentic Ray-Ban look. Each pair features the RB logo where applicable, so you can be confident in their originality and performance.

Choose the only replacement recommended by certified opticians and Ray-Ban itself. Restore the original style and sun protection of your sunglasses with genuine lenses designed for your RB3766CH model.

Technical Specifications and Materials

  • Compatibility: Exclusively for Ray-Ban RB3766CH. Not suitable for other models.
  • Available sizes: 54 mm and 56 mm (check your frame’s inner temple for the exact size).
  • Lens diameter: 58 mm and 60 mm depending on variant.
  • Lens height: 46 mm and 47 mm depending on size.
  • Shape: Square.
  • Lens material: High-quality mineral glass, as per Ray-Ban’s original specification.
  • Available colors:
    • 001/O9 – Polarized Grey
    • 002/K8 – Polarized Dark Grey
    • 003/J0 – Gradient Gold
    • 004/5J – Mirror Silver
    • 9259AN – Polarized Brown
  • Use: Adult sunglasses.
  • Product type: Pair of original Ray-Ban lenses, official replacement.

How to Check Your Model and Exact Size

Follow these steps to ensure you select the correct replacement:

  • Find the model code (RB3766CH) on the inside of your frame’s temple.
  • Check the size, usually listed next to the model (e.g., 54□17 145).
  • Look for the color code, typically after the size (e.g., 001/O9).
  • If unsure, compare your current lenses’ shape and measurements with the specifications above.
Original Ray-Ban RB3766CH Lenses | Official Replacement
Real experiences

Reviews of these lenses

There are no reviews for this product yet

We only show reviews for this product. If you've already bought it, tell us how the fit, color and installation went.

We answer your questions

FAQ

Are these identical to my original factory lenses?

Yes, these are original Ray-Ban replacement lenses made by Luxottica to official brand standards. Minor updates in materials or tints may occur depending on the variant or production year, always within official specifications.

What exactly is included in my order?

Your order includes one pair of original Ray-Ban RB3766CH lenses. The frame is not included.

Are they guaranteed authentic?

We guarantee all our parts are 100% original Ray-Ban, supplied by the official manufacturer.

Discover our full range of original Ray-Ban replacement parts.

You can also browse all our original Ray-Ban lenses available for other models.

Is the price for one lens or for the pair?

The price is for a complete pair: original Ray-Ban right and left lenses.

Can I choose a different color from the original?

Yes. You can choose another available variant as long as you select the RB3766CH model and the exact lens size of your frame.

How do I know if I need 54 or 56 mm?

Look for the reference on the inside of the arm. In an inscription such as RB3766CH ··· 54□··, the number 54 is the lens size.

Are all colors available in all lens sizes?

Not necessarily. Final availability depends on the lens size and the color and coating combination: when you choose a lens size, you'll only see the colors that exist for it.

Do the polarized versions have a logo?

Yes. On polarized variants, the marking may appear as Ray-Ban P, in addition to the discreet RB engraving.

Will they fit another similar model?

No. Shape doesn't determine compatibility: these lenses are only for reference RB3766CH and the lens size you choose.

Search by reference

Find your glasses' reference

Look on the inside of one of the temple arms. That's where you'll find the details needed to find the right replacement part.

Inside of a Ray-Ban temple arm showing reference RB2140, color 901, lens size 50, bridge 22 and arm length 150
RB2140Frame model
901Color code
50Lens size
22Bridge width
150Arm length
●

To find lenses: the model and lens size are usually enough. For arms: we also recommend checking the color and length.