公开(公告)号：US4797302A

公开(公告)日：1989-01-10

申请号：US137047

申请日：1987-12-23

申请人： Johannes W. Ingeveld ,  Albert J. Westerhof

发明人： Johannes W. Ingeveld ,  Albert J. Westerhof

IPC分类号： H01J9/20 ,  H01K1/32 ,  H01K3/00 ,  B05D5/12

CPC分类号： H01K3/005 ,  H01J9/20 ,  H01K1/325

摘要： The electric lamp has a lamp vessel (1) of which a wall portion (4) is mirror-coated at its inner surface with an aluminum layer. This wall portion (4) has a boundary (5) near the largest diameter (2) of the lamp vessel (1). This boundary (5) is adjoined by a zone (10) coated with a transparent aluminum oxide layer. In the lamp, a dark zone caused by a very thin aluminum layer adjoining the boundary (5) is avoided.

公开(公告)号：US4758761A

公开(公告)日：1988-07-19

申请号：US40450

申请日：1987-04-16

申请人： Johannes W. Ingeveld ,  Albert J. Westerhof

发明人： Johannes W. Ingeveld ,  Albert J. Westerhof

IPC分类号： H01J9/20 ,  H01K1/32 ,  H01K3/00 ,  H01J5/10

CPC分类号： H01K3/005 ,  H01J9/20 ,  H01K1/325

摘要： The electric lamp has a lamp vessel of which a wall portion is mirror-coated at its inner surface with an aluminum layer. This wall portion has a boundary near the largest diameter of the lamp vessel. This boundary is adjoined by a thermally connected zone having a transparent aluminum oxide layer. In the lamp, a dark zone caused by a very thin aluminum layer adjoining the boundary is avoided.