Soft white reflector lamp

Claim 2

A lamp comprising a vitreous envelope enclosing an electric light source wherein at least a portion of said envelope is coated with a coating comprising a silicone material containing coarse light-scattering particles, said coating being effective to substantially eliminate filament hot spots and glare when said lamp is energized said particles having a particle size distribution whereby over 50 weight percent is retained on 325 mesh screen.

Claim 3

A lamp of claim 1 wherein said coarse light-scattering particles comprise titanium dioxide.

Claim 4

A lamp of claim 2 wherein said titanium dioxide particles are untreated.

Claim 5

A lamp of claim 3 wherein said titanium dioxide is rutile titanium dioxide.

Claim 6

A lamp according to claim 2, wherein said titanium dioxide is greater than 99.5% pure.

Claim 7

A lamp according to claim 1, wherein said coating being effective to reduce the lumen output by less than 30% when said lamp is energized.

Claim 8

A lamp according to claim 1, wherein said coating being effective to reduce the lumen output by less than 5% when said lamp is energized.

Claim 9

A lamp according to claim 1, wherein said coating being effective to reduce the lumen output by less than about 2% when said lamp is energized.

Claim 10

A lamp of claim 1 wherein said silicone material comprises a silicone polyester.

Claim 11

A reflector lamp comprising a glass envelope enclosing a filament within capable of providing a lumen output, said envelope including a light-reflecting portion and a forward, light-transmitting portion, with said light-transmitting portion being coated with a coating comprising a silicone material containing coarse light-scattering particles of titanium dioxide, said coating being effective to substantially eliminate filament hot spots and glare when said lamp is energized, said particles having a particle size distribution whereby over 50 weight percent is retained on 325 mesh screen.

Claim 12

A reflector lamp comprising a glass envelope enclosing a filament within capable of providing a lumen output, said envelope including a light-reflecting portion and a forward, light-transmitting portion, with said light-transmitting portion being coated with a coating comprising a silicone material containing coarse light-scattering particles of titanium dioxide, said coating being effective to substantially eliminate filament hot spots and glare when said lamp is energized, said particles having a particle size distribution whereby over 50 weight percent is retained on 325 mesh screen.

Claim 13

A lamp according to claim 10 wherein said titanium dioxide particles are untreated.

Claim 14

A lamp according to claim 11 wherein said titanium dioxide particles are rutile.

Claim 15

A lamp according to claim 10, wherein said coating being effective to reduce the lumen output by less than 30% when said lamp is energized.

Claim 16

A lamp according to claim 10, wherein said coating being effective to reduce the lumen output by less than 5% when said lamp is energized.

Claim 17

A lamp according to claim 10, wherein said coating being effective to reduce the lumen output by less than about 2% when said lamp is energized.

Claim 18

A lamp of claim 10 wherein said silicone material comprises a silicone polyester.

Claim 19

A lamp according to claim 10 wherein said coating gives said lamp a soft white appearance when energized, said soft white appearance being substantially free of filament hot spots and glare when energized.

Claim 20

A lamp according to claim 16 wherein said coating gives said lamp a soft white appearance when energized, said soft white appearance being substantially free of filament hot spots and glare when energized.

Claim 21

A reflector lamp comprising a unitary glass envelope enclosing a filament as a source of light within capable of providing a lumen output when energized, with said envelope having a light-reflecting portion and a forward, light-transmitting portion and wherein said light-reflecting portion is coated on its interior surface with a metallic, light-reflecting coating and wherein said light-transmitting portion is coated with a coating comprising a silicone material containing light-scattering particles of untreated titanium dioxide which gives said lamp a soft white appearance when energized, said coating being effective to substantially eliminate filament hot spots and glare when said lamp is energized, said particles having a particle size distribution whereby over 50 weight percent is retained on 325 mesh screen.

Claim 22

A reflector lamp comprising a unitary glass envelope enclosing a filament as a source of light within capable of providing a lumen output when energized, with said envelope having a light-reflecting portion and a forward, light-transmitting portion and wherein said light-reflecting portion is coated on its interior surface with a metallic, light-reflecting coating and wherein said light-transmitting portion is coated with a coating comprising a silicone material containing light-scattering particles of untreated titanium dioxide which gives said lamp a soft white appearance when energized, said coating being effective to substantially eliminate filament hot spots and glare when said lamp is energized, said particles having a particle size distribution whereby over 50 weight percent is retained on 325 mesh screen.

Claim 23

A lamp according to claim 19 wherein said titanium dioxide is rutile.

Claim 24

A lamp according to claim 20 wherein said titanium dioxide particles have a particle size distribution such that over 50% is retained on a 325 mesh screen.