公开(公告)号：US5051650A

公开(公告)日：1991-09-24

申请号：US480127

申请日：1990-02-14

申请人： Akira Taya ,  Keiji Hatakeyama ,  Kanehiro Saito ,  Mitsumasa Saito ,  Kazuhiko Osada

发明人： Akira Taya ,  Keiji Hatakeyama ,  Kanehiro Saito ,  Mitsumasa Saito ,  Kazuhiko Osada

IPC分类号： C03C17/23 ,  C03C17/32 ,  H01J9/20 ,  H01J61/35 ,  H01J61/40 ,  H01K1/32

CPC分类号： H01J61/40 ,  C03C17/23 ,  C03C17/32 ,  H01J9/20 ,  H01K1/32 ,  C03C2217/23 ,  C03C2218/112

摘要： A film consisting of a fine powder of zinc oxide and titanium oxide and an inorganic binder is formed on the outer surface of a light source. The fine powder serves as an absorbent for ultraviolet radiation emitted from the light source. The film is formed on the outer surface by spraying a coating agent prepared by dispersing the above components in an organic solvent on the outer surface of the light source and heating and drying the coating agent.

公开(公告)号：US5801483A

公开(公告)日：1998-09-01

申请号：US608496

申请日：1996-02-28

申请人： Miho Watanabe ,  Hisashi Honda ,  Keiji Hatakeyama ,  Yuichi Sakakiabra ,  Akiko Saitou

发明人： Miho Watanabe ,  Hisashi Honda ,  Keiji Hatakeyama ,  Yuichi Sakakiabra ,  Akiko Saitou

IPC分类号： A61L9/20 ,  H01J61/35 ,  H01J61/44 ,  H01J61/48 ,  H01J1/62

CPC分类号： H01J61/48

摘要： A fluorescent lamp includes a light-transmitting envelope, means for generating a discharge within envelope, a discharge sustaining fill contained in envelope for emitting ultraviolet rays during the lamp operation and a phosphor layer coated on an inner surface of envelope. The phosphor layer converts the ultraviolet rays into visible light and ultraviolet radiation within a wavelength range of 320 nm to 410 nm so as to have radiant flux ratio of ultraviolet radiation of 5 to 50 percent of the entire radiant flux of the lamp.

摘要翻译： 荧光灯包括透光外壳，用于在外壳内产生放电的装置，包含在灯操作期间发射紫外线的外壳中的放电维持填充物和涂覆在外壳的内表面上的荧光体层。 荧光体层将紫外线转换成在320nm至410nm的波长范围内的可见光和紫外线辐射，以使紫外线的辐射通量比为灯的整个辐射通量的5％至50％。

公开(公告)号：US5227693A

公开(公告)日：1993-07-13

申请号：US677328

申请日：1991-03-29

申请人： Yuichi Sakakibara ,  Keiji Hatakeyama ,  Kunihiko Ikada

发明人： Yuichi Sakakibara ,  Keiji Hatakeyama ,  Kunihiko Ikada

IPC分类号： H01J61/40

CPC分类号： H01J61/40 ,  Y10T428/2495

摘要： A fluorescent lamp including, a bulb having an outer surface and an inner surface, discharge gas contained in the bulb and generating ultraviolet rays by a discharge thereof, a pair of electrodes provided to the bulb for generating the discharge, a phosphor film formed on the inner surface of the bulb and having a non-uniform thickness thereof, and an ultraviolet suppressing film for suppressing the ultraviolet rays formed to be faced with the phosphor film, characterized in that the ultraviolet suppressing film has non-uniform ability for suppressing ultraviolet rays penetrating the phosphor film in accordance with portions thereof to decrease the difference in the intensity of the ultraviolet rays emitted from the ultraviolet suppressing film.

公开(公告)号：US4663563A

公开(公告)日：1987-05-05

申请号：US855629

申请日：1986-04-25

申请人： Akira Taya ,  Kazuo Narita ,  Yasuhiko Hagiwara ,  Keiji Hatakeyama

发明人： Akira Taya ,  Kazuo Narita ,  Yasuhiko Hagiwara ,  Keiji Hatakeyama

IPC分类号： C09K11/71 ,  C09K11/73 ,  C09K11/77 ,  H01J61/44 ,  C09K11/477

CPC分类号： C09K11/71 ,  C09K11/7796 ,  H01J61/44

摘要： Disclosed is a halophosphate phosphor activated with divalent europium, which is represented by the formula:M.sub.5-a X(PO.sub.4).sub.3 :Eu.sup.2+ (a),RE(b),wherein M represents three alkaline earth metals consisting of barium, calcium and magnesium; X represents at least one of fluorine, chlorine and bromine; RE represents at least one of rare earth elements selected from the group consisting of ytterbium, neodymium, samarium, dysprosium, holmium and thulium; and a and b each represent a positive number of less than 5.Disclosed is also a fluorescent lamp which comprises a glass tube and a mixture of a halophosphate phosphor activated with divalent europium represented by the above formula and a strontium-magnesium orthophosphate phosphor activated with tin represented by the formula: (Sr,Mg).sub.3 (PO.sub.4).sub.2 :Sn, the mixture being coated on inside wall of the glass tube.The halophosphate phosphor of this invention can decrease to a greater extent the afterglow as compared with those known in the prior art, without loss of the luminescence intensity. The fluorescent lamp of this invention has large initial luminous flux and luminous flux-maintaining efficient, color rendering at 4,200 to 5,600 K classified into the EDL type, afterglow time being shortened to the level at which any problem does not arise in practical use.

摘要翻译： 公开了用二价铕活化的卤代磷酸盐荧光体，其由下式表示：M5-aX（PO4）3：Eu2 +（a），RE（b），其中M表示由钡，钙和镁组成的三种碱土金属; X表示氟，氯和溴中的至少一种; RE表示选自镱，钕，钐，镝，钬和th中的至少一种稀土元素; 并且a和b各自表示小于5的正数。还公开了一种荧光灯，其包括玻璃管和由上式表示的二价铕活化的卤代磷酸盐荧光体和由上式表示的锶 - 镁正磷酸盐荧光体的混合物， 锡（Sr，Mg）3（PO4）2：Sn表示的锡，混合物涂覆在玻璃管的内壁上。 与现有技术中已知的相比，本发明的卤代磷酸盐荧光体可以在更大程度上降低余辉，而不损失发光强度。 本发明的荧光灯具有较大的初始光通量和光通量保持效率，分色为EDL型的4,200至5,600K的显色性，余辉时间缩短到实际使用中不出现任何问题的程度。