| 摘要 |
A transparent substrate (1), esp. of glass, has a coating of thin films comprising, successively, a first dielectric coating (2), a first IR-reflecting esp metallic layer (3), a second dielectric coating (5), a second IR-reflective esp metallic layer (6) and a third dielectric coating (8). The first IR-reflective layer (3) has a thickness which is 55-75 (pref. 60-70, esp. 65)% of that of the second IR-reflective layer (6). Also claimed are (i) laminated glazing which incorporates the above substrate and which has a light transmission (Tl) of 70% and a blue or green external reflection colour; (ii) multiple (esp. double) glazing which incorporates the above substrate and which has a light transmission (Tl) of 60-70% and a solar factor of 0.32-0.42; and (iii) multiple (esp. double) glazing which incorporates colour and opt. a blue transmission colour esp. when the dielectric coatings (2,5,8) are of Ta2O5.
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