Heat-reflecting member, and method for manufacturing glass member having heat-reflecting layer included therein

A method of manufacturing a glass member with a heat reflective layer, comprising steps of:

• producing an intermediate glass laminate having a laminated structure in which a siliceous sintered powder layer is formed between an upper quartz glass layer and a lower quartz glass layer wherein the siliceous sintered powder layer is the heat reflective layer;
• heating and firing the siliceous sintered powder layer with a laser at a power enough to keep the siliceous sintered powder layer from cutting or with burner flame from a quartz glass layer side on an outer surface along a site of the intermediate glass laminate to be cut out into a predetermined shape, to thereby form a fired site including an intermediate buffer layer or an intermediate buffer layer and an intermediate impermeable layer;
• and
• further cutting out a position at which the fired site is formed with a laser so that the intermediate buffer layer and, if applicable, the intermediate impermeable layer are modified, so as to form an end portion structure including a buffer layer and a stronger impermeable layer, wherein said buffer layer changes in density from the impermeable layer toward the siliceous sintered powder layer, wherein the modified impermeable layer is formed at the cut-out end portion by densifying the siliceous sintered powder layer with heat from the laser, wherein the modified buffer layer is formed adjacent to the modified impermeable layer, and spaced in a direction away from the cut-out end portion by the modified impermeable layer by partially densifying the siliceous sintered powder layer.