Calculateur LPI Lenticulaire

Calculez les pixels prêts à imprimer, le nombre maximal de vues par lentille et l'angle de rotation recommandé pour une impression lenticulaire. Saisissez la taille d'impression, la résolution DPI, la LPI et le nombre de vues souhaité.

Print width (inches, 1–16)Print height (inches, 1–16)Printer resolution (DPI, 150–2400)Lens pitch (LPI, 20–160)Desired view count (optional, 2–1024)

Print-ready output

4,320 × 2,880 px

Uncompressed RGBA/TIFF ≈ 47 MB. This is the minimum source resolution to avoid upscaling at print time.

Views per lens

Without lens rotation

12 views

720 DPI / 60 LPI = 12 pixels per lens period.

With lens rotation (~5°)

144 views

Rotating the lens interleaves 2D pixel phases across the lens direction: floor((720/60)²) = 144.

Before interlacing, measure the real lens pitch with a pitch test chart and use the measured value as the LPI — nominal lens pitch often differs from the real one.

Frequently asked questions

What does this LPI calculator do?

It converts a print size and printer resolution into print-ready pixel dimensions, and converts printer DPI plus lens LPI into the maximum number of distinct views a lenticular lens period can hold, with and without lens rotation. If you enter a desired view count, it also tells you whether that view count fits and the recommended lens rotation angle.

What does LPI mean for lenticular printing?

LPI (lenses per inch) is the pitch of the lenticular lens sheet — how many lenslets fit in one inch. With a 60 LPI sheet and a 720 DPI printer, each lens period is 12 pixels wide, so at most 12 distinct views fit without rotation. Rotating the lens interleaves the 2D pixel grid across the lens direction and raises the budget to floor((DPI/LPI)²).

Why should I measure the real LPI instead of trusting the label?

The nominal LPI printed on a lens sheet often differs from the real pitch by a few percent, and the mismatch grows visibly across a large print. Generate a pitch test chart at the nominal LPI, print it at 100% scale, lay the lens sheet on it, and read the block that aligns — that measured value is the LPI to use for interlacing.

What happens if I use more views than the lens can hold?

Views beyond the lens period budget alias into neighboring lenslets, producing ghosting and banding artifacts instead of a clean 3D effect. Either raise the printer DPI, use a finer lens (higher LPI), or reduce the view count.