![Fresnel Rhomb Retarders](https://productimages.edmundoptics.com/7627.jpg?w=305&quality=80)
![TECHSPEC® components are designed, specified, or manufactured by Edmund Optics.](/Assets/images/logo-techspec-product.gif)
- Broadband Performance with <2% Retardance Variation
- 12.7mm and 25.4mm Options Available
- λ/4 and λ/2 Retardance Options
![Precision Achromatic Waveplates (Retarders)](https://productimages.edmundoptics.com/4990.jpg?w=305&quality=80)
- Broad Spectral Range
- λ/100 Retardance Accuracy
- λ/4 and λ/2 Retardance
- High Damage Threshold of 500 W/cm2
![Achromatic Waveplates (Retarders)](https://productimages.edmundoptics.com/7629.jpg?w=305&quality=80)
- Multiple Wavelength Ranges Available
- Flat Response Over Each Broad Spectral Range
- λ/4 and λ/2 Retardance
- Mounted in Black Anodized Aluminum Housing
![Liquid Crystal Variable Waveplates (Retarders)](https://productimages.edmundoptics.com/3005.jpg?w=305&quality=80)
- Precise Electrically Controlled Retardance up to λ/2
- Manual or Computer Interface Control
- Easy Mounting with 8-32 Tapped Hole
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