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    Two-color (two-photon) excitation with focused excitation beams and a raman shifter
    2.
    发明授权
    Two-color (two-photon) excitation with focused excitation beams and a raman shifter 有权
    双色（双光子）激发与聚焦激发光束和一个拉曼移位器

    公开(公告)号：US08227256B2

    公开(公告)日：2012-07-24

    申请号：US10529043

    申请日：2002-09-27

    Applicant: Caesar A. Saloma ,  Wilson O. Garcia ,  Jonathan A. Palero

    Inventor： Caesar A. Saloma ,  Wilson O. Garcia ,  Jonathan A. Palero

    IPC: G01N21/64 ,  G01N21/62 ,  G01N21/63 ,  G01J1/52 ,  G01J3/443

    CPC classification number: G02B21/0004 ,  G01N21/636

    Abstract: Two-color (two-photon) excitation with two confocal excitation beams is demonstrated with a Raman shifter as excitation light source. Two-color excitation fluorescence is obtained from Coumarin 6H dye sample (peak absorption=394 nm, peak fluorescence=490 nm) that is excited using the first two Stokes outputs (683 nm, 954 nm, two-color excitation=398 nm) of a Raman shifter pumped by a 6.5 nsec pulsed 532 nm-Nd:YAG laser (Repetition rate=10 Hz). The two Stokes pulses overlap for a few nanoseconds and two-color fluorescence is generateven with focusing objectives of low numerical apertures (NA≦0.4). We observed the linear dependence of the two-color fluorescence signal with the product of the average intensities of the two Stokes excitation beams. The two-color fluorescence distribution is strongly localized around the common focus of the confocal excitation beams.

    Abstract translation: 使用拉曼移位器作为激发光源，演示了具有两个共聚焦激发光束的双色（双光子）激发。 从使用前两个斯托克斯输出（683nm，954nm，双色激发= 398nm）激发的香豆素6H染料样品（峰值吸收= 394nm，峰值荧光= 490nm）获得双色激发荧光 由6.5nsec脉冲532nm-Nd：YAG激光器泵浦的拉曼移位器（重复率= 10Hz）。 两个斯托克斯脉冲重叠几个纳秒，并且产生具有低数值孔径（NA＆nlE; 0.4）的聚焦目标的双色荧光。 我们观察到两色荧光信号与两个斯托克斯激发光束的平均强度的乘积的线性相关性。 双色荧光分布强烈地局限于共聚焦激发光束的共同焦点。

    Method and apparatus for measuring the relative intensity of the beams emanating from a single laser
    3.
    发明授权
    Method and apparatus for measuring the relative intensity of the beams emanating from a single laser 失效
    用于测量从单个激光器发出的光束的相对强度的方法和装置

    公开(公告)号：US4261662A

    公开(公告)日：1981-04-14

    申请号：US1114

    申请日：1979-01-05

    Applicant: Benjamin L. Bluford, Jr. ,  Alexander G. Mondrick, Jr. ,  Milan Schwartz

    Inventor： Benjamin L. Bluford, Jr. ,  Alexander G. Mondrick, Jr. ,  Milan Schwartz

    IPC: G01J1/52 ,  H01S3/00 ,  G01J1/00

    CPC classification number: G01J1/52 ,  H01S3/0014

    Abstract: The laser beam to be measured is focussed onto a photographic film to rec the beam pattern. A second laser beam is then used to measure the displacement of the side lobes from the main beam. An apertured metal plate is then substituted for the film and, by the use of a beam deflector and a calorimeter, the intensity of the main beam alone is measured. Using the beam displacement data previously recorded, the metal plate is then moved to co-incide with one of the side lobes and the intensity of the side lobe recorded. This procedure is repeated for all remaining side lobes.

    Abstract translation: 要测量的激光束被聚焦到照相胶片上以记录光束图案。 然后使用第二激光束来测量旁瓣与主光束的位移。 然后将有孔金属板代替膜，并且通过使用光束偏转器和量热计，测量单独的主光束的强度。 使用先前记录的光束位移数据，然后移动金属板与旁瓣中的一个和记录的旁瓣的强度共同存在。 对所有剩余的旁瓣重复该过程。

    Flash photography changeover device
    4.
    发明授权
    Flash photography changeover device 失效
    闪光摄影更换装置

    公开(公告)号：US3683768A

    公开(公告)日：1972-08-15

    申请号：US3683768D

    申请日：1969-02-25

    Applicant: HATTORI TOKEITEN KK

    Inventor： KITAI KIYOSHI

    IPC: G03B7/16 ,  G03B9/70 ,  G01J1/52

    CPC classification number: G03B9/70 ,  G03B7/16

    Abstract: Apparatus in a camera for sensing the brightness of a subject to be photographed and devices for giving a visual indication to the camera operator whether or not a flash unit utilized with the camera is in an operative condition. In addition, apparatus is provided for automatically taking a picture of the subject using the ambient light if there is sufficient ambient light and for energizing the flash unit if there is insufficient ambient light. The apparatus also automatically takes a picture of the subject using ambient light if the flash unit is deflective.

    Abstract translation: 用于感测要拍摄的被摄体的亮度的照相机中的装置以及用于向相机操作者给出视觉指示的装置，用于与照相机一起使用的闪光灯组件是否处于操作状态。 此外，如果存在足够的环境光，并且如果没有足够的环境光，则使用环境光来自动拍摄被摄体的照片的设备，以及用于激励闪光灯单元。 如果闪光灯组件偏转，设备也会自动拍摄对象的照片。

    Sensitometer light source apparatus
    5.
    发明授权
    Sensitometer light source apparatus 失效
    传感器光源装置

    公开(公告)号：US3677150A

    公开(公告)日：1972-07-18

    申请号：US3677150D

    申请日：1970-10-02

    Applicant: ITEK CORP

    Inventor： SANFORD LLOYD CLIFFORD

    IPC: F21K5/12 ,  G01J1/42 ,  G01J1/52

    CPC classification number: F21K5/023 ,  G01J1/42

    Abstract: An exposure source unit for a sensitometer. The exposure source unit provides in a single structure the combination of a flash lamp, a photographic density wedge, and a plurality of radiation paths from the flash lamp to an exposure plane in which the photographic density wedge is located. The exposure source unit is constructed to provide substantially uniform radiation over the entire area of the exposure plane. In first and second embodiments, a flash lamp is located adjacent to one end of the exposure source unit, and the exposure source unit presents a plurality of folded optical paths to the exposure plane. The folded optical paths prevent radiation from directly striking the exposure plane. The cross sectional area of the exposure source unit increases as the distance from the flash lamp increases. The internal walls of the unit are formed of highly reflective, light scattering surfaces so that light is thoroughly scattered before reaching the exposure plane. In a third embodiment, the exposure source unit is constructed of clear plastic and is shaped so radiation from the lamp is selectively internally reflected within the unit and selectively transmitted from the unit to provide substantially uniform radiation over the entire area of the exposure plane.

    Abstract translation: 感光度计的曝光源单元。 曝光源单元以单一结构提供闪光灯，照相密度楔以及从闪光灯到照相密度楔所在的曝光平面的多条辐射路径的组合。 曝光源单元构造成在曝光平面的整个区域上提供基本均匀的辐射。 在第一和第二实施例中，闪光灯位于曝光源单元的一端附近，曝光源单元呈现多个折叠的光路到曝光平面。 折叠的光路防止辐射直接撞击曝光平面。 曝光源单元的横截面积随着与闪光灯的距离的增加而增加。 单元的内壁由高反射性，光散射表面形成，使得光在到达曝光平面之前被彻底散射。 在第三实施例中，曝光源单元由透明塑料构成，并且其形状使得来自灯的辐射在单元内选择性地被内部反射并从该单元选择性地传输，以在曝光平面的整个区域上提供基本上均匀的辐射。

    Compound light receiving elements for exposure meters
    10.
    发明授权
    Compound light receiving elements for exposure meters 失效
    化学发光灯接收元件

    公开(公告)号：US3783758A

    公开(公告)日：1974-01-08

    申请号：US3783758D

    申请日：1971-12-06

    Applicant: MINOLTA CAMERA KK

    Inventor： TSUJIMOTO K ,  YATA K ,  MATSUDA M

    IPC: G03B7/099 ,  G01J1/52

    CPC classification number: G03B7/09976

    Abstract: A photometric device for generating an electric signal related to coincident light intensity comprises a number of photoresponsive means each including first and second photoconductive elements having response characteristics such that the logarithm of resistance to the logarithm of light intensity are respectively proportional over different ranges of light intensity. Additionally, the first photoconductive element in each of the photoresponsive means has a higher sensitivity than that of the second photoconductive element. The first and second photoconductive elements are positioned to receive light for different areas of the objective field. The first and second photoconductive element of each photoresponsive means are specifically interconnected with similar elements of another photoresponsive means to enhance the light response characteristics.

    Abstract translation: 用于产生与重合光强有关的电信号的光度测量装置包括多个光响应装置，每个光响应装置包括具有响应特性的第一和第二光电导元件，使得光强对数的电阻对数分别在不同的光强度范围内成比例 。 另外，每个光响应装置中的第一光电导元件具有比第二光电导元件更高的灵敏度。 第一和第二光电导元件被定位成为目标场的不同区域接收光。 每个光响应装置的第一和第二光电导元件与另一光响应装置的类似元件具体互连，以增强光响应特性。

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