Vehicle Cup Holder Diffraction Grating Illumination

The patent employs diffraction gratings that cause light to split into multiple wavelengths, creating a rainbow-like color effect. The insert material with diffraction grating structures causes incident light to diffract into spectral colors, providing dynamic color changes that enhance aesthetic appeal while maintaining functional illumination.

The patent changes the optical parameters of the cup holder by incorporating diffraction grating structures with specific line densities (e.g., 600 lines/mm). This physical parameter change transforms ordinary light into spectrally dispersed light, creating the desired visual effect without compromising the lighting function.

The diffraction grating insert causes white light to split into its spectral components, creating a dynamic rainbow effect that changes with viewing angle. This simple yet effective optical phenomenon transforms basic lighting into a visually captivating experience without complex mechanisms.

The patent replaces complex mechanical lighting systems with a passive optical element (diffraction grating). The visual effects are achieved through optical physics rather than mechanical movement or complex electronics, simplifying the system while enhancing the visual experience.

The diffraction grating creates angle-dependent color separation, where the spectral colors appear at different positions depending on the viewer's perspective. This static structure produces dynamic visual effects that change with viewing angle, fulfilling the requirement for perspective-dependent effects.

The patent adds the dimension of viewing angle to the lighting effect. The diffraction grating transforms ordinary isotropic lighting into anisotropic lighting where the visual appearance varies with the third dimension (viewing angle), creating the desired perspective-dependent dynamic effect.