Lenticular lenses are plastic lenses consisting of an array of optical elements (lenticules). When viewed from different angles, different areas under the lens are magnified.

Pitch is the count of lenticules per inch in a certain lenticular lens, measured in LPI. A lenticule is a single optical element, a vertical strip in the lenticular sheet.

Lenticular images are specially prepared images to which the lens is attached. Views are arranged under lenticules so that each eye is projected a different view. The brain then integrates these views into a single coherent 3D image.

Interlacing is the process of creating a lenticular image from a set of 2D images. A small strip is taken from each 2D image and is combined in one image to match a specific lens pitch.

The lenticular lens is manufactured from various types of plastic (PETG, PVC, Acrylic). The lens's ability to withstand extreme weather depends on the type of plastic from which it is made. Its resistance to vandalism, scratches, breakage and fire is determined by the plastic used.

There are several lenticular manufacturers around the world. HumanEyes has secured special pricing for its customers with some of them.

For more information, please contact HumanEyes at 3d@humaneyes.com.

There are standard sizes for lenticular sheets; however, for larger orders, manufacturers may be willing to cut the sheets to a certain size.

To avoid any shrinking or expanding of the plastic due to humidity or temperature changes, lenses should be stored in a controlled environment.

The narrower the viewing angle, the larger the viewing distance for 3D.

Different thickness lenses are suitable for different applications and printing methods. In general, thick lenses are more suitable for printing large posters. Thin lenses are more suitable for small, handheld pictures. The type of lenticular effect is also relevant: thick (narrow angle) lenses are more suitable for 3D, while thinner (wide angle) lenses are better for flip and animation effects. The following table contains more detailed specifications for use of different lenses:

Application	Viewing Distance (in meters and feet)	Lenticular Type	Thickness	Production Possibilities
Large size and outdoor displays	1.5-6 (m) 5-20 (f)	20 LPI 3D (29 degrees)	150 mil (3.81 mm)	Photo-printers (Lambda, LightJet); Wide format ink-jet;
Retail POP displays
Trade show graphics
Large size and outdoor displays	1.5-6 (m) 5-20 (f)	20 LPI Flip (47 degrees)	85 mil (2.16 mm)	Photo-printers (Lambda, LightJet); Wide format ink-jet;
Retail POP displays
Trade show graphics
Trade show graphics	0.9-4.5 (m) 3-15 (f)	30 LPI (49 degrees) (may not be suitable for all applications)	52 mil (1.32 mm)	Photo-printers (Lambda, LightJet); Wide format ink-jet; Screen printing
General purpose signs
Trade show graphics	0.9-4.5 (m) 3-15 (f)	40 LPI 3D (25 degrees)	82 mil (2.08mm)	Photo-printers (Lambda, LightJet); Wide format ink-jet; desktop ink-jet printers
General purpose signs
Transportation / Bus stops
Trade show graphics	0.3-3(m) 1-10 (f) or more	60 LPI 3D (26 Degrees)	48 mil (1.22 mm)	Photo-printers (Lambda, LightJet); Wide format ink-jet; desktop ink-jet printers
General purpose signs
Transportation / Bus stops
Small POP display and signs	0.3-1.5(m) 1-5(f)	62 LPI (44 degrees)	27 mil (0.686 mm)	Mass volume lithographic offset
Direct mail retail
Sales promotion premiums
Product packaging
In-store programs (larger than 8"x10")
Small POP display and signs	0.2 - 1(m) 0.65-3.3(f)	75 LPI (46 degrees) (may not be suitable for all applications)	18 mil (0.457 mm)	Mass volume lithographic offset
Direct mail retail
Sales promotion premiums
Product packaging
In-store programs (larger than 8"x10")
Small POP display and signs	0.2 - 1(m) 0.65-3.3(f)	100 LPI Flip (42 degrees) (may not be suitable for all applications)	14 mil (0.35 mm)	Mass volume lithographic offset
Direct mail retail
Sales promotion premiums
Product packaging
In-store programs (larger than 8"x10")
Small POP display and signs	0.2 - 1(m) 0.65-3.3(f)	100 LPI 3D (30 degrees) (may not be suitable for all applications)	23 mil (0.575 mm)	Mass volume lithographic offset
Direct mail retail
Sales promotion premiums
Product packaging
In-store programs (larger than 8"x10")