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    • 2. 发明授权
    • Method and apparatus for making absolute range measurements
    • 绝对距离测量的方法和装置
    • US5914785A
    • 1999-06-22
    • US18502
    • 1998-02-04
    • Stephen W. AllisonMichael R. CatesWilliam S. KeyAlvin J. SandersDennis D. Earl
    • Stephen W. AllisonMichael R. CatesWilliam S. KeyAlvin J. SandersDennis D. Earl
    • G01B11/00G01B11/02G01S17/32G01B5/14
    • G01S17/32G01B11/026
    • This invention relates to a method and apparatus for making absolute distance or ranging measurements using Fresnel diffraction. The invention employs a source of electromagnetic radiation having a known wavelength or wavelength distribution, which sends a beam of electromagnetic radiation through an object which causes it to be split (hereinafter referred to as a "beamsplitter"), and then to a target. The beam is reflected from the target onto a screen containing an aperture spaced a known distance from the beamsplitter. The aperture is sized so as to produce a Fresnel diffraction pattern. A portion of the beam travels through the aperture to a detector, spaced a known distance from the screen. The detector detects the central intensity of the beam. The distance from the object which causes the beam to be split to the target can then be calculated based upon the known wavelength, aperture radius, beam intensity, and distance from the detector to the screen. Several apparatus embodiments are disclosed for practicing the method embodiments of the present invention.
    • 本发明涉及使用菲涅尔衍射进行绝对距离或测距测量的方法和装置。 本发明采用具有已知波长或波长分布的电磁辐射源,其通过使其分裂的物体(以下称为“分束器”)发送电磁辐射束,然后发送到目标。 光束从目标物反射到包含与分束器间隔已知距离的光圈的屏幕上。 孔径的大小可以产生菲涅尔衍射图。 光束的一部分穿过孔径到与屏幕隔开已知距离的检测器。 检测器检测光束的中心强度。 然后可以基于已知的波长,孔径半径,光束强度以及从检测器到屏幕的距离来计算使被分离到目标物体的物体的距离。 公开了用于实施本发明的方法实施例的几个装置实施例。
    • 4. 发明授权
    • Method and apparatus for making absolute range measurements
    • 绝对距离测量的方法和装置
    • US06456383B1
    • 2002-09-24
    • US09705847
    • 2000-11-03
    • Dennis D. EarlStephen W. AllisonMichael R. CatesAlvin J. Sanders
    • Dennis D. EarlStephen W. AllisonMichael R. CatesAlvin J. Sanders
    • G01D1114
    • G01S17/32G01B11/026
    • This invention relates to a method and apparatus for making absolute distance or ranging measurements using Fresnel diffraction. The invention employs a source of electromagnetic radiation having a known wavelength or wavelength distribution, which sends a beam of electromagnetic radiation through a screen at least partially opaque at the wavelength. The screen has an aperture sized so as to produce a Fresnel diffraction pattern. A portion of the beam travels through the aperture to a detector spaced some distance from the screen. The detector detects the central intensity of the beam as well as a set of intensities displaced from a center of the aperture. The distance from the source to the target can then be calculated based upon the known wavelength, aperture radius, and beam intensity.
    • 本发明涉及使用菲涅尔衍射进行绝对距离或测距测量的方法和装置。 本发明使用具有已知波长或波长分布的电磁辐射源,其将波长的电磁辐射通过至少部分不透明的波长的屏幕发射。 屏幕具有孔径,以便产生菲涅尔衍射图案。 光束的一部分穿过孔径到与屏幕隔开一定距离的检测器。 检测器检测光束的中心强度以及从孔径中心偏移的一组强度。 然后可以基于已知的波长,孔径半径和光束强度来计算从源到目标的距离。
    • 7. 发明授权
    • High temperature thermometric phosphors
    • 高温测温荧光粉
    • US5885484A
    • 1999-03-23
    • US933916
    • 1997-09-23
    • Stephen W. AllisonMichael R. CatesLynn A. BoatnerGeorge T. Gillies
    • Stephen W. AllisonMichael R. CatesLynn A. BoatnerGeorge T. Gillies
    • C09K11/81G01K11/20
    • G01K11/20
    • A high temperature phosphor consists essentially of a material having the general formula LuPO.sub.4 :Dy.sub.(x),Eu.sub.y) wherein: 0.1 wt %.ltoreq.x.ltoreq.20 wt % and 0.1 wt %.ltoreq.y.ltoreq.20 wt %.The high temperature phosphor is in contact with an article whose temperature is to be determined. The article having the phosphor in contact with it is placed in the environment for which the temperature of the article is to be determined. The phosphor is excited by a laser causing the phosphor to fluoresce. The emission from the phosphor is optically focused into a beam-splitting mirror which separates the emission into two separate emissions, the emission caused by the dysprosium dopant and the emission caused by the europium dopent. The separated emissions are optically filtered and the intensities of the emission are detected and measured. The ratio of the intensity of each emission is determined and the temperature of the article is calculated from the ratio of the intensities of the separate emissions.
    • 高温荧光体基本上由具有通式LuPO 4:Dy(x),Eu y)的材料组成,其中:0.1重量%≤20重量%,0.1重量%≤20重量% %。 高温荧光体与要测定其温度的物品接触。 具有与其接触的荧光体的物品被放置在要确定制品的温度的环境中。 磷光体被激光激发,导致磷光体发荧光。 来自磷光体的发射被光学聚焦成分束镜,其将发射分离成两个单独的发射,由镝掺杂物引起的发射和由铕掺杂引起的发射。 分离的发射被光学滤波,并且检测和测量发射的强度。 确定每个排放强度的比例,并根据单独排放强度的比率计算物品的温度。
    • 8. 发明授权
    • High temperature thermometric phosphors for use in a temperature sensor
    • 用于温度传感器的高温测温荧光粉
    • US5730528A
    • 1998-03-24
    • US704052
    • 1996-08-28
    • Stephen W. AllisonMichael R. CatesLynn A. BoatnerGeorge T. Gillies
    • Stephen W. AllisonMichael R. CatesLynn A. BoatnerGeorge T. Gillies
    • C09K11/81G01K11/20
    • G01K11/20
    • A high temperature phosphor consists essentially of a material having the general formula LuPO.sub.4 :Dy.sub.(x),Eu.sub.(y), wherein: 0.1 wt %.ltoreq.x.ltoreq.20 wt % and 0.1 wt %.ltoreq.y.ltoreq.20 wt %. The high temperature phosphor is in contact with an article whose temperature is to be determined. The article having the phosphor in contact with it is placed in the environment for which the temperature of the article is to be determined. The phosphor is excited by a laser causing the phosphor to fluoresce. The emission from the phosphor is optically focused into a beam-splitting mirror which separates the emission into two separate emissions, the emission caused by the dysprosium dopant and the emission caused by the europium dopent. The separated emissions are optically filtered and the intensities of the emission are detected and measured. The ratio of the intensity of each emission is determined and the temperature of the article is calculated from the ratio of the intensities of the separate emissions.
    • 高温荧光体基本上由具有通式LuPO 4:Dy(x),Eu(y)的材料组成,其中:0.1重量%≤0.0重量%和0.1重量% = 20重量%。 高温荧光体与要测定其温度的物品接触。 具有与其接触的荧光体的物品被放置在要确定制品的温度的环境中。 磷光体被激光激发,导致磷光体发荧光。 来自磷光体的发射被光学聚焦成分束镜,其将发射分离成两个单独的发射,由镝掺杂物引起的发射和由铕掺杂引起的发射。 分离的发射被光学滤波,并且检测和测量发射的强度。 确定每个排放强度的比例,并根据单独排放强度的比率计算物品的温度。