---
product_id: 88091363
title: "Double Concave Lens, 50mm Focal Length, 2\" (50mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs"
price: "€ 29.30"
currency: EUR
in_stock: true
reviews_count: 4
url: https://www.desertcart.hr/products/88091363-double-concave-lens-50mm-focal-length-2-50mm-diameter-spherical
store_origin: HR
region: Croatia
---

# Optically worked, polished glass 2-inch diameter, 13mm thick 50mm focal length precision Double Concave Lens, 50mm Focal Length, 2" (50mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs

**Price:** € 29.30
**Availability:** ✅ In Stock

## Summary

> 🔬 Elevate your optics game with precision and polish!

## Quick Answers

- **What is this?** Double Concave Lens, 50mm Focal Length, 2" (50mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs
- **How much does it cost?** € 29.30 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/88091363-double-concave-lens-50mm-focal-length-2-50mm-diameter-spherical)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Premium Optical Clarity:** Crafted from high-grade, polished glass for crystal-clear visuals
- • **Durable & Classroom-Ready:** Ground edges and robust design built to withstand active learning environments
- • **Precision Diverging Optics:** 50mm focal length for accurate light refraction demos
- • **Trusted Quality by Eisco Labs:** Engineered with expert care and international standards for reliable performance
- • **Perfect Size for Hands-On Learning:** Compact 2-inch diameter fits comfortably in any physics lab setup

## Overview

This double concave lens features a 50mm focal length and a 2-inch diameter, crafted from optically worked, highly polished glass with ground edges. Designed specifically for physics classrooms, it delivers precise light divergence and durable performance, making it an essential tool for hands-on optics demonstrations and educational experiments.

## Description

DOUBLE CONCAVE || Highly polished, double concave lens SPHERICAL || Lens measures 2" (50mm) in diameter and is approximately 13mm thick 50MM FOCAL LENGTH || Diverging lens with a 50mm focal length OPTICALLY WORKED GLASS || Made of high quality, optically worked glass. Highly polished with ground edges GREAT FOR PHYSICS CLASSROOMS || This optically true lens is excellent for physics classroom demonstrations in optics and light refraction Optically True, Double Concave Lens 50mm Diameter, 50mm Focal Length High quality, optically true lens. Made of highly polished, quality glass. Spherical with ground edges. Designed for educational purpose and science classroom demonstrations in optics and light physics. Lens measures 2" (50mm) in diameter, and has a diverging focal length of 50mm. Eisco Labs proudly manufactures its own products using state-of-the-art equipment, and following the highest standards of quality control. Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind. They are manufactured with only the highest grade, raw materials and according to international quality standards to ensure that they can withstand use in even the toughest laboratory environments.

Review: Highly recommend this item and seller. Good quality product. - The item was as stated and of good quality. Seller was prompt and product was well protected for transport.
Review: good double concave - This is an inherently cool lens shape. I got several different of these eisco lenses, and they are all packed nicely, and are perfect lenses for kids or an educational setting. They are perfectly smooth and clear, they are washable (no coatings), and reasonable durable (no scratches yet). These are not in any way intended for use by someone doing serious optics.

## Features

- DOUBLE CONCAVE || Highly polished, double concave lens
- SPHERICAL || Lens measures 2" (50mm) in diameter and is approximately 13mm thick
- 50MM FOCAL LENGTH || Diverging lens with a 50mm focal length
- OPTICALLY WORKED GLASS || Made of high quality, optically worked glass. Highly polished with ground edges
- GREAT FOR PHYSICS CLASSROOMS || This optically true lens is excellent for physics classroom demonstrations in optics and light refraction

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 4.3 out of 5 stars 14 Reviews |

## Images

![Double Concave Lens, 50mm Focal Length, 2" (50mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs - Image 1](https://m.media-amazon.com/images/I/81rvc6DaDGL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Highly recommend this item and seller. Good quality product.
*by T***D on December 12, 2018*

The item was as stated and of good quality. Seller was prompt and product was well protected for transport.

### ⭐⭐⭐⭐⭐ good double concave
*by M***O on June 5, 2024*

This is an inherently cool lens shape. I got several different of these eisco lenses, and they are all packed nicely, and are perfect lenses for kids or an educational setting. They are perfectly smooth and clear, they are washable (no coatings), and reasonable durable (no scratches yet). These are not in any way intended for use by someone doing serious optics.

### ⭐⭐⭐ It's ok I guess..
*by A***N on March 30, 2021*

Came chipped kinda hard to spin on because it's small but its still ok

## Frequently Bought Together

- EISCO Double Concave Lens, 50mm Focal Length, 2" (50mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms
- EISCO 6pc Optical Lens Set, 2" (50mm) Diameter - 3 Double Convex Lens & 3 Double Concave Lens - 200mm, 300mm, 500mm Focal Lengths - Optically True Glass - Ground, Beveled Edges
- EISCO Double Convex Lens, 1000mm Focal Length, 3" (75mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms

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**Shop now:** [https://www.desertcart.hr/products/88091363-double-concave-lens-50mm-focal-length-2-50mm-diameter-spherical](https://www.desertcart.hr/products/88091363-double-concave-lens-50mm-focal-length-2-50mm-diameter-spherical)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-20*