公开(公告)号：US06614180B1

公开(公告)日：2003-09-02

申请号：US09698173

申请日：2000-10-30

Applicant: Tom Francke ,  Vladimir Peskov

Inventor： Tom Francke ,  Vladimir Peskov

IPC: H01J134

CPC classification number: G01T1/2935 ,  G01T1/2018

Abstract: An apparatus and method for detecting ionizing radiation are presented. The apparatus includes a scintillator adapted to convert incident ionizing radiation into light; a photocathode adapted to release photoelectrons in dependence on the light; an electron avalanche amplifier adapted to avalanche amplify the photoelectrons; and a readout arrangement adapted to detect the avalanche amplified electrons. The electron avalanche amplifier in one implementation is a gaseous avalanche amplifier including an array of amplification regions. A protective layer is provided to prevent the avalanche gas from coming into contact with the photocathode.

Abstract translation: 提出了一种用于检测电离辐射的装置和方法。 该装置包括适于将入射的电离辐射转换为光的闪烁体; 适于根据光释放光电子的光电阴极; 适用于雪崩放大光电子的电子雪崩放大器; 以及适于检测雪崩放大电子的读出装置。 一种实施方式中的电子雪崩放大器是包括放大区域阵列的气态雪崩放大器。 提供保护层以防止雪崩气体与光电阴极接触。

公开(公告)号：US06667572B2

公开(公告)日：2003-12-23

申请号：US09988760

申请日：2001-11-20

Applicant: Howard D. Lewis

Inventor： Howard D. Lewis

IPC: H01J134

CPC classification number: B82Y30/00 ,  B82Y20/00 ,  G09F9/30 ,  Y10S977/734 ,  Y10S977/768 ,  Y10S977/845 ,  Y10S977/952

Abstract: An image display apparatus includes a nanotube assembly having a plurality of nanotubes arranged in an array. An optical excitation device is provided adjacent to the nanotube assembly. The optical excitation device includes a diffraction grating and a piezoelectric crystal disposed adjacent to the diffraction grating. A radiation source generates a write beam incident to the piezoelectric crystal, a read beam incident to the diffraction grating, and an erase beam incident to the diffraction grating. When voltage is applied to the piezoelectric crystal, the write beam scans across the diffraction grating and forms a grating pattern in the diffraction grating. The read beam reads the grating pattern as a holographic image on the at least one nanotube. The erase beam erases the grating pattern.

Abstract translation: 图像显示装置包括具有排列成阵列的多个纳米管的纳米管组件。 邻近纳米管组件设置光学激发装置。 光激发装置包括衍射光栅和邻近衍射光栅设置的压电晶体。 辐射源产生入射到压电晶体的写入光束，入射到衍射光栅的读取光束和入射到衍射光栅的擦除光束。 当电压施加到压电晶体时，写入光束跨越衍射光栅扫描并在衍射光栅中形成光栅图案。 读取光束在至少一个纳米管上读取作为全息图像的光栅图案。 擦除光束擦除光栅图案。

公开(公告)号：US06831341B2

公开(公告)日：2004-12-14

申请号：US10416703

申请日：2003-05-14

Applicant: Hirofumi Kan ,  Minoru Niigaki ,  Masashi Ohta ,  Yasufumi Takagi ,  Shoichi Uchiyama

Inventor： Hirofumi Kan ,  Minoru Niigaki ,  Masashi Ohta ,  Yasufumi Takagi ,  Shoichi Uchiyama

IPC: H01J134

CPC classification number: H01J31/507 ,  H01J1/34 ,  H01J40/06 ,  H01J43/08 ,  H01J2231/50021

Abstract: Ultraviolet light incident from the side of a surface layer 5 passes through the surface layer 5 to reach an optical absorption layer 4. Light which reaches the optical absorption layer 4 is absorbed within the optical absorption layer 4, and photoelectrons are generated within the optical absorption layer 4. Photoelectrons diffuse within the optical absorption layer 4, and reach the interface between the optical absorption layer 4 and the surface layer 5. Because the energy band is curved in the vicinity of the interface between the optical absorption layer 4 and surface layer 5, the energy of the photoelectrons is larger than the electron affinity in the surface layer 5, and so photoelectrons are easily ejected to the outside. Here, the optical absorption layer 4 is formed from an Al0.3Ga0.7N layer with an Mg content concentration of not less than 2×1019 cm−3 but not more than 1×1020 cm−3, so that a solar-blind type semiconductor photocathode 1 with high quantum efficiency is obtained.

Abstract translation: 从表面层5侧入射的紫外光通过表层5到达光吸收层4.到达光吸收层4的光被吸收在光吸收层4内，并且在光吸收中产生光电子 光电子在光吸收层4内扩散，并到达光吸收层4和表面层5之间的界面。因为能带在光吸收层4和表面层5之间的界面附近弯曲 ，光电子的能量大于表面层5中的电子亲和力，因此光电子容易被排出到外部。 这里，光吸收层4由Mg含量浓度不小于2×10 19 cm -3但不大于1×10 20 cm -3的Al 0.3 Ga 0.7 N层形成，因此 得到具有高量子效率的太阳能型半导体光电阴极1。

公开(公告)号：US06825604B2

公开(公告)日：2004-11-30

申请号：US10428943

申请日：2003-05-05

Applicant: Lyuji Ozawa

Inventor： Lyuji Ozawa

IPC: H01J134

CPC classification number: H01J29/327 ,  H01J29/185 ,  H01J29/30

Abstract: The phosphor screen is capable of minimizing the spread of lights in the phosphor screen, so as to restrict fading images and lowering contrast. The phosphor screen comprises a lot of minute phosphor sections. The phosphor sections are respectively enclosed by barriers, which absorb visible lights and have electric conductance, and whose height is equal to or higher than a half of thickness of the phosphor sections. The barriers are made of a material including the particles of an inorganic compound, whose average diameter is 1-8 &mgr;m, and carbon particles, whose average diameter is less than 1 &mgr;m.

Abstract translation: 荧光屏能够使荧光屏中的光的扩散最小化，以限制褪色图像并降低对比度。 荧光屏包括许多微小的荧光体部分。 荧光体部分分别被吸收可见光并具有导电性的屏障包围，其高度等于或高于荧光体部分的厚度的一半。 障碍物由包括平均直径为1-8μm的无机化合物的颗粒和平均直径小于1μm的碳颗粒的材料制成。

公开(公告)号：US06670752B2

公开(公告)日：2003-12-30

申请号：US10181360

申请日：2002-07-17

Applicant: Masao Kinoshita ,  Hiroyuki Watanabe ,  Rie Nishiura

Inventor： Masao Kinoshita ,  Hiroyuki Watanabe ,  Rie Nishiura

IPC: H01J134

CPC classification number: B82Y10/00 ,  H01J1/35 ,  H01J43/06 ,  H01J43/10 ,  H01J2201/30469 ,  H01J2201/32 ,  H01J2201/3426 ,  Y10S977/952

Abstract: The cathode for photo-electron emission 5 is comprised of an alkali metal containing layer 5d made of material for emitting photo-electrons by the entry of light or for emitting secondary electrons by the entry of electrons, such as particles which consist of an alkali antimony compound, on an Ni electrode substrate 5c on which an Al layer 5b is deposited, and has an intermediate layer 5a made of carbon nano-tubes between the alkali metal containing layer 5d and the Ni electrode substrate 5c, therefore the defect density inside the particles is decreased, and the recombining probability of electrons and holes drops remarkably, which improves the quantum efficiency.

Abstract translation: 用于光电子发射的阴极5由含有碱金属的层5d组成，所述碱金属含有层5d由用于通过入射光或用于通过电子进入发射二次电子的材料制成，例如由碱锑组成的颗粒 在沉积有Al层5b的Ni电极基板5c上，在碱金属含有层5d和Ni电极基板5c之间具有由碳纳米管构成的中间层5a，因此颗粒内的缺陷密度 电子和空穴的重组概率明显下降，提高了量子效率。