Thin films are used in a wide range of applications in industry and research, such as packaging materials, optical films, and electronic devices. Thickness of thin films is one of the key parameters affecting their performance and functionality. Therefore, it is very important to accurately detect the thickness of thin films.

Spectral confocal displacement sensor is a high-precision sensor device that can be used to detect various types of thin films, including optical thin films, coating thickness, etc.

1. Optical films: Optical films have important applications in optical instruments, displays, and other fields. Spectral confocal sensors can accurately measure the thickness of optical films to ensure their light transmission and colour.

2. Coating Thickness: It is the film applied to the surface of the substrate. Such coating films are commonly used to improve the physical or chemical properties of the substrate. Examples include gold plating, silver plating, and electroplating. Spectral Confocal Displacement Sensor can help us detect the thickness of the coating, so as to ensure that the performance of the coating is guaranteed.

The use of spectral confocal displacement sensors to detect film thickness has the following advantages:

1. High-precision measurement: Spectral confocal displacement sensor can accurately measure the thickness of the film, the measurement accuracy can reach the micron level, so as to ensure that the quality and performance of the film meet the requirements.

2. Non-contact measurement: Spectral confocal displacement sensor adopts non-contact measurement method, which will not cause any damage to the measured object, and at the same time, it can avoid the error caused by the contact, so as to ensure the accuracy of the measurement.

3. Fast Measurement: The spectral confocal displacement sensor has the ability of fast scanning, which can measure multiple films in a short period of time, thus improving the inspection efficiency and reducing the inspection cost.