Continuous Grayscale Control Grayscale Film with 50800dpi Resolution and 0.18mm Thickness for Optical Calibration

Grayscale film is a precision optical film with continuous grayscale control capability. It is mainly used in optical calibration, exposure control, imaging testing, and high-end pattern transfer scenarios.

Standard configurations are listed below. Professional customization is supported.

There are two main technical paths:

• Density Modulation (OD Control): By controlling the optical density of the material, different intensities of light are transmitted through different areas to achieve continuous or graded grayscale.
• Area Modulation (Halftone): Simulates grayscale effects by using tiny dot matrices of different sizes or densities (similar to printing dots) through the "number of dots".

During exposure or photolithography processes, different grayscale areas correspond to different light energies: high light transmission areas produce high exposure energy, while low light transmission areas produce low exposure energy. This enables the formation of structures with different depths or heights on photoresist, photosensitive materials, or other media.

This is one of the most important capabilities of grayscale film. Through a single exposure, multi-height structures (3D contours), continuous slopes (gradient structures), microlenses, or curved structures can be realized without multiple alignment exposures.