> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Convex Glass Lens with Edge - 40mm Diameter

**Type:** Product page · **SKU:** ADA3853 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/convex-glass-lens-with-edge-40mm-diameter.html ([markdown](https://core-electronics.com.au/convex-glass-lens-with-edge-40mm-diameter.html.md))

The eyes have it! Add this little lens to make a big expression with Adafruit's Spooky Eyes demo for microcontrollers or Raspberry Pi. These are gorgeous glass (not plastic/acrylic!)...

## Pricing

- **Price:** $13.80 (inc GST) — $12.55 AUD, exc GST
- **Quantity discounts:** 10+ $12.17 (exc GST) · 50+ $11.92 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 20 and Aug 24.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA3853:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/ADA3853:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

The eyes have it! Add this little lens to make a big expression with Adafruit's Spooky Eyes demo for microcontrollers or Raspberry Pi. These are gorgeous glass (*not plastic/acrylic!*) lenses, with brilliant clarity and a nice convexity (is that a word?) They've even got a lip-edge so you can mount them easily with a 38mm cutout.

Adafruit have attached these to Adafruit's [Raspberry Pi Animated Eyes Bonnet](https://core-electronics.com.au/adafruit-animated-eyes-bonnet-for-raspberry-pi-pack-pi-not-included.html) Kit for a real nice upgrade!

**This product is just a single glass lens**. Perfect for use with Adafruit's [Raspberry Pi Snake Eyes Bonnet](https://learn.adafruit.com/animated-snake-eyes-bonnet-for-raspberry-pi?view=all) guide or Adafruit's [Electronic Animated Eyes](https://learn.adafruit.com/animated-electronic-eyes-using-teensy-3-1?view=all) guide. Check out both of those for the full listing of what you'll need. Of course, these work great for other purposes when you need a convex lens.

Note: These are solid glass domes, with no internal void.

![https://www.youtube.com/embed/Zzhqn1K7OwQ?start=659](https://core-electronics.com.au/attachments/localcontent/hqdefault_19169d6d564.jpg)

## Technical Details

- Outer Diameter: 40mm
- "Inner" Diameter: 37.5mm
- Height: 16mm
- Focal Length: 22mm

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/3/8/3853-1.jpg)