The influence of lampshades made of different materials on light transmittance is significant, mainly reflected in the following aspects:
1. Glass lampshade: It usually has good transparency, high light transmittance, and can approach 100%, especially colorless transparent glass. However, if frosted or colored glass is used, the transmittance will correspondingly decrease, generally between 70% and 80%, depending on the degree of frosting and the color depth.
2. Transparent PC (polycarbonate) lampshade: The untreated transparent PC lampshade has a light transmittance of 92% -95%, close to glass, but lighter and less fragile than glass. If sandblasting or adding textures to achieve the effect of scattering or softening light, the transmittance will decrease to around 80% -89%.
3. Acrylic (PMMA) lampshade: Acrylic lampshades are known for their excellent optical properties, with a light transmittance of up to 92% and a tough texture that is not easily broken. The acrylic material lampshade provides high transparency while maintaining good light diffusion effect.
4. * * Milk white PC or acrylic lampshade * *: This type of lampshade adds components that scatter light to achieve a more uniform and soft lighting effect. The transmittance is generally between 80% -85%, and the specific value depends on the material formula and processing method.
5. Fabric or textile lampshades: These types of lampshades are commonly used for decorative lighting, with low light transmittance and generally in a semi transparent state. The specific light transmittance varies depending on the material and weaving density, but is usually much lower than plastic or glass lampshades.
6. Metal lampshade: Especially for painted metal lampshades, their light transmittance depends on the design. In many cases, metal lampshades do not directly transmit light, but rely on reflection or partial hollow design to control light. Light transmittance is usually not the main consideration factor for metal lampshades.
In summary, the physical properties and processing methods of different materials can affect the transmittance of lampshades. Therefore, when selecting lampshades, it is necessary to consider the actual lighting needs and aesthetic preferences comprehensively.
