It is often said that the surface gloss of a sculpture is the reflection under the condition that its surface is rough. The reflected light has a clear direction, which is generally called specular reflection. Use this property in optical materials to achieve a variety of applications. However, the surface of most materials is not completely smooth, so when the light irradiates the rough sculpture surface, a considerable diffuse reflection occurs.
It is difficult to define a precise gloss, but it is closely related to the relative content of specular reflection and diffuse reflection. Surface gloss has been found to be closely related to the clarity and integrity of the reflected image, that is, to the width of the specularly reflected light band and its intensity. These factors are mainly determined by the refractive index and surface roughness.
Different sculpture products have different requirements for their surface gloss. Manufacturers need to strictly control the gloss quality of products according to customer requirements.
For urban sculpture, it is an art exhibition that records the history and culture of the city. In order to obtain a better appearance, strict requirements are required for its surface gloss and color. Whether the gloss is too high or too low, it will affect the overall display effect. To accurately evaluate the surface gloss of a sculpture, a special instrument is needed for measurement.
To measure the surface gloss of a sculpture, a gloss meter is used. Most gloss meters measure the specular reflectance of the object surface, that is, the specular gloss.
Linshang LS192 gloss meter has a real-time temperature compensation function, which can ensure the stability of the instrument and make the measurement results no matter what the temperature environment is. The temperature compensation function is realized through the instrument's real-time detection of the current ambient temperature. According to the detected ambient temperature, the drive current of the light source is adjusted in real time to ensure that under different ambient temperature conditions, although the luminous efficiency of the light source is changing. The intensity is the same, which ensures the measurement process. If the ambient temperature changes, the measurement data is still accurate.
When using a gloss meter to control the surface gloss quality of a sculpture, users need to specify the measurement angle used by the instrument. Use the same instrument to measure and then compare the measurement results. The general angle on the market is a 60-degree angle. Like the general-purpose 60-degree gloss meter LS192 from Linshang Technology, the range reaches 1000GU. High-gloss and low-gloss materials can be tested because gloss is a relative value. When there is no uniform standard in the industry, the LS192 can be used for testing. If the industry has a uniform standard, it is best to use the same angle of testing. Therefore, when selecting the measurement angle, you should choose different gloss meters according to different situations.