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Plastic retarders are a cost effective alternative to mica or quartz which are generally 0.8mm thick and available in large sizes. Our stock range includes one wave plates which can be used as sensitive-tint plates in polariscopes to display small strain in a specimen by colour differences.

Our stock plastic retarders are available in both half-wave and quarter-wave types between 140-560nm and can be purchased directly from this page. Knight Optical also offer an extensive custom optics service thanks to our many years experience in the industry, and we are able to cut and shape plastic retarder sheets to size to fit individual applications.

For more information on our plastic sheet retarders or to enquire about any of our components, contact our technical sales team.

Dimensions:


Thickness:

<100mm ±0.5mm
100-400mm ±1mm
>400m nominal
nominal

Special sizes and shapes
Mounting
Special Glass laminating
Special AR coatings

16 Items

Name Retardance (nm) Description Length (mm) Width (mm) Thickness (mm) Price Buy
RAP14050 140 Visible 1/4 wave 50 50 0.15
$16.61
RAP140100 140 Visible 1/4 wave 100 100 0.15
$41.63
RAP140150 140 Visible 1/4 wave 150 150 0.15
$90.28
RAP140305 140 Visible 1/4 wave 305 305 0.15
$235.61
RAP20050 200 NIR 1/4 wave 50 50 0.8
$16.61
RAP200100 200 NIR 1/4 wave 100 100 0.8
$41.63
RAP200150 200 NIR 1/4 wave 150 150 0.8
$90.28
RAP200305 200 NIR 1/4 wave 305 305 0.8
$235.61
RAP28050 280 Visible 1/2 wave 50 50 0.8
$16.61
RAP280100 280 Visible 1/2 wave 100 100 0.8
$41.63
RAP280150 280 Visible 1/2 wave 150 150 0.8
$90.28
RAP280305 280 Visible 1/2 wave 305 305 0.8
$235.61
RAP56050 560 Visible 1 wave 50 50 0.8
$16.61
RAP560100 560 Visible 1 wave 100 100 0.8
$41.63
RAP560150 560 Visible 1 wave 150 150 0.8
$90.28
RAP560305 560 Visible 1 wave 305 305 0.8
$235.61

16 Items

1

Plastic Retarders

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