| 摘要 |
PROBLEM TO BE SOLVED: To provide a top plate for cooker excellent in aesthetic appearance, provided with a transparent crystallized glass substrate containing titanium oxide, and a reflective film formed on the back surface of the transparent crystallized glass substrate.SOLUTION: The top plate for cooker 1 includes the transparent crystallized glass substrate 2 containing titanium oxide, and the reflective film 4 formed on the back surface of the transparent crystallized glass substrate 2 to reflect at least a certain wavelength range of light in the visible wavelength range. The top plate for cooker 1 is formed between the transparent crystallized glass substrate 2 and the reflective film 4, and further includes a color tone correction film 3 with an optical transmissivity gradually reducing with the elongation of wavelength in the visible wavelength range. In the visible wavelength range, the reflective film 4 and the color tone correction film 3 have a mean optical reflectivity at the interface between the color tone correction film 3 and the transparent crystallized glass substrate 2 lower than the mean optical reflectivity at the interface between the color tone correction film 3 and the reflective film 4. |
