A gradation pattern is a pattern with smooth changes in transmittance or reflectance. EQUA’s proprietary data processing method allows you to design not only linear changes but also various curves such as sine waves and parabolas. There are two types of transmission type: film and glass. For the glass type, we use a high-precision drawing device to achieve smooth grayscale expression with microscopic dots with a minimum size of 2um.For the film type, a unique precision exposure process enables the creation of an extremely smooth gradation pattern with flexible density changes. Due to its ability to express neutral colors, photographic paper is sometimes used to produce reflective type products.
Examples of production using Glass Substrate
＜Rotating Gradation＞
The gradation is expressed with a thin chrome film on a glass substrate. The shading of the gradation is determined by the arrangement ratio of dots, each with a minimum size of 2um.
＜Radial Gradation＞
The transmittance increases from the center to the outer.
＜Concentric Gradation – Sine Wave＞
A repetition of sine waves in concentric circles.
＜Horizontal Gradation – Sine Wave＞
A gradient pattern of sine waves that change horizontally.
Example of production using PET Substrate
This is a gradation pattern made from PET base material. Although the pattern is rougher than that of glass products, it has advantages in terms of ease of handling and cost. The gradation shading is composed of the dot arrangement ratio.
Example of production using Photographic Paper Substrate
This is a gradation pattern made using photographic paper, which allows the gradation to be expressed in shades of gray rather than in dots.
Gradation Patterns
A gradation pattern can be used to smoothly vary the light transmittance and is commonly applied in dimming patterns. The transmittance can change not only linearly, but also according to various curves, such as sine waves and parabolas. The substrate can be made of glass, PET, and other materials, as well as paper.
＜Radial Gradation＞
A pattern in which the transmittance changes radially.
＜Linear Gradation＞
This is a linear change in transmittance. The slope can be set to any value.
＜Sine Wave Gradation＞
A pattern in which the transmittance changes in a sine wave shape. The frequency can be set to any value.
＜Rotating Gradation＞
A pattern in which the transmittance changes in the rotational direction. In the case of a glass substrate, it is possible to process the substrate into a circular shape or create a hole at the center.
