公开(公告)号：US3716740A

公开(公告)日：1973-02-13

申请号：US3716740D

申请日：1970-09-18

Applicant: BELL TELEPHONE LABOR INC

Inventor： CROWELL M ,  GORDON E

IPC: H01J29/38 ,  H01J31/48

CPC classification number: H01J29/38

Abstract: THE SPECIFICATION DESCRIBES A NEW TYPE OF PHOTOCATHODE COMPRISING A SEMICONDUCTOR DIODE-ARRAY LIGHT SENSING ELEMENT IN COMBINATION WITH A PHOTOEMISSIVE COATING. THE SPATIAL PATTERN OF ELECTRON EMISSION FROM THE PHOTOEMITTER IS CONTROLLED BY THE LOCALIZED FIELD IN THE DIODE ARRAY. THE LOCAL INTENSITY OF THIS FIELD GIVES A SPATIAL REPRESENTATION OF THE IMAGE INCIDENT ON THE DIODE ARRAY. WITH A SILICON DIODE ARRAY INFRARED AND X-RAY RESPONSE ARE INHERENT.

公开(公告)号：US3715685A

公开(公告)日：1973-02-06

申请号：US3715685D

申请日：1971-04-30

Applicant: BELL TELEPHONE LABOR INC

Inventor： GORDON E ,  MAYDAN D

IPC: H01S5/14 ,  H01S3/00

CPC classification number: H01S5/14

Abstract: The specification describes injection lasers employing heterosemiconductor structures for obtaining an enlarged crosssectional area cavity defined by an optical waveguide terminated by the cleaved faces of the semi-conductor structure (usually known as mirrors). The enlarged area of the cavity allows higher power output from the laser for the same power density on the mirrors. The power density is limited by damage to the mirrors. The waveguide produces an output consisting of two plane wave lobes for each mode. Techniques for mode enhancement are described from which higher ultimate power for a single mode and higher efficiency can e predicted without exciting modes of other order. Separation between the thresholds of competing modes can be enhanced, for example, by placing a spherical reflector in the path of one output lobe to focus the energy back into the original cavity while at the same time aperturing the mirror to block modes of other order. This expedient is based upon the uniqueness of the lobe angle for a given mode. Also described is a technique for combining the dual lobe output characteristic of this laser structure by using a beam splitter in reverse.

公开(公告)号：US3771008A

公开(公告)日：1973-11-06

申请号：US3771008D

申请日：1972-11-09

Applicant: BELL TELEPHONE LABOR INC

Inventor： CHEN Y ,  FUKUI H ,  GORDON E ,  KRUPKA D ,  ROWEN J

IPC: H01J17/49 ,  H01J17/04 ,  H01J61/06

CPC classification number: H01J17/49 ,  H01J17/497

Abstract: The specification describes a flat panel gaseous discharge display device in which the display illumination is formed at least in part by luminescence resulting from excitation of an appropriate phosphor by low energy electrons drawn from a glow discharge. To provide scan, the discharge is either itself moving in stepwise fashion between discrete cells or is a secondary discharge primed by a scanning discharge and triggered by the display information signal. Varying the current through the phosphor produces gray scale. Illumination from the gaseous discharge may be mixed with the phosphor for color balance and increased brightness. The phosphor can be divided into color stripes with means for selective energization of the stripes to form a color display.

Abstract translation: 本说明书描述了一种平板气体放电显示装置，其中显示照明至少部分地由通过从辉光放电引起的低能电子激发适当的荧光体而产生的发光形成。 为了提供扫描，放电本身在分立单元之间以逐步的方式移动，或者是由扫描放电引发并由显示信息信号触发的二次放电。 通过荧光粉改变电流产生灰度。 来自气体放电的照明可以与荧光体混合以用于颜色平衡和增加的亮度。 磷光体可以被分成彩色条纹，用于选择性地激励条纹以形成彩色显示。