Photometry device and camera with photometry device
    71.
    发明授权
    Photometry device and camera with photometry device 失效
    光度测量装置和带测光装置的相机

    公开(公告)号:US5717965A

    公开(公告)日:1998-02-10

    申请号:US561967

    申请日:1995-11-22

    申请人: Hiroyuki Iwasaki

    发明人: Hiroyuki Iwasaki

    IPC分类号: G03B7/091 G03B3/00 G03B7/08

    CPC分类号: G03B7/091

    摘要: A device has a photometry unit for performing a photometry operation of an object field using an accumulation type photometry element, and an accumulation time determination unit for determining the accumulation time of the photometry element. The accumulation time determination unit determines the value of the accumulation time for the next photometry operation by calculating a weighted average of the accumulation times in previous photometry operations. Since the value of the accumulation time for the next photometry operation is determined by calculating a weighted average of the accumulation times in previous photometry operations, the influence of flickering of an illumination light source can be eliminated, and a photometered value can be output within a short period of time.

    摘要翻译: 装置具有用于使用累积型测光元件进行物场的测光操作的测光单元,以及用于确定测光元件的累积时间的累积时间确定单元。 累积时间确定单元通过计算先前测光操作中的累加时间的加权平均值来确定下一次测光操作的累积时间的值。 由于通过计算先前测光操作中的累积时间的加权平均值来确定下一次测光操作的累积时间的值,所以可以消除照明光源的闪烁的影响,并且可以在 很短的时间。

    Photometry device and method
    72.
    发明授权
    Photometry device and method 失效
    测光装置及方法

    公开(公告)号:US5627620A

    公开(公告)日:1997-05-06

    申请号:US419549

    申请日:1995-04-10

    申请人: Hiroyuki Iwasaki

    发明人: Hiroyuki Iwasaki

    摘要: An accumulation-type light receiving element photoelectrically converts light from the subject field and outputs an electric signal on the basis of the brightness. An accumulation time setting component sets the accumulation time of the light receiving element and an accumulation operation component carries out accumulation in the light receiving element on the basis of the information from the accumulation time setting component. A photometric value input component inputs the photometry output from the light receiving element. A brightness value calculating component calculates the brightness value of the subject field on the basis of the outputs of the accumulation time setting component and the photometric value input component and further corrects the accumulation time of the light receiving element that has been input from the accumulation time setting component.

    摘要翻译: 累积型光接收元件对来自被摄场的光进行光电转换,并根据亮度输出电信号。 积累时间设定部件根据来自累积时间设定部件的信息,设定光接收元件的累积时间,积累运算部件在光接收元件中进行累积。 光度值输入分量输入光接收元件的测光输出。 亮度值计算部件基于累积时间设定部件和测光值输入部件的输出来计算被摄体场的亮度值,并进一步校正从累积时间输入的光接收元件的累积时间 设置组件。

    Photometry device with correction for temperature change
    73.
    发明授权
    Photometry device with correction for temperature change 失效
    用于温度变化校正的测光装置

    公开(公告)号:US5604584A

    公开(公告)日:1997-02-18

    申请号:US439370

    申请日:1995-05-11

    申请人: Hiroyuki Iwasaki

    发明人: Hiroyuki Iwasaki

    CPC分类号: G01J1/42

    摘要: A photometry device provides accurate photometry outputs over temperature by correcting light sensitivity variations of a light receiving element due to temperature variations. The photometry device includes the light receiving element, a light sensitivity detection device and a light sensitivity correction device. A correction formula is determined from the outputs of the light sensitivity corrections device generated at a standard condition and a condition other than the standard condition. The light sensitivity correction device corrects the outputs of the light receiving elements based on the correction formula.

    摘要翻译: 测光装置通过校正由于温度变化导致的光接收元件的光敏度变化,提供了温度上的精确的测光输出。 测光装置包括光接收元件,光敏检测装置和光灵敏度校正装置。 根据在标准条件下生成的光敏度校正装置的输出和除了标准条件之外的条件来确定校正公式。 光敏度校正装置基于校正公式校正光接收元件的输出。

    Exposure calculating apparatus
    74.
    发明授权

    公开(公告)号:US5461452A

    公开(公告)日:1995-10-24

    申请号:US341978

    申请日:1994-11-16

    申请人: Hiroyuki Iwasaki

    发明人: Hiroyuki Iwasaki

    摘要: An exposure calculating apparatus includes a light-metering device, consisting of a light-metering elements corresponding to elementary areas obtained by dividing a field of a focusing optical system, for measuring a light intensity distribution in the field, a position of object detecting means for detecting a position of object in the field, a classifying means for changing a divisional pattern of light-metering areas in correspondence with the position of object, and classifying the light-metering elements of the light-metering device into a plurality of groups according to the divisional pattern, and a calculating device for calculating an exposure value by weighting the outputs from the plurality of light-metering elements in correspondence with the groups to which the light-metering elements belong, and supplying the exposure value to exposure control.

    Light metering calculation apparatus
    75.
    发明授权
    Light metering calculation apparatus 失效
    计量计量装置

    公开(公告)号:US5414487A

    公开(公告)日:1995-05-09

    申请号:US309469

    申请日:1994-09-22

    申请人: Hiroyuki Iwasaki

    发明人: Hiroyuki Iwasaki

    IPC分类号: G03B7/08 G03B7/099

    摘要: A light metering calculating apparatus used in an AE camera is disclosed. The light metering calculating apparatus includes a light metering device for performing a light metering operation while dividing an objective field into a plurality of light metering regions, and outputting light metering signals corresponding to the respective light metering regions, and a grouping device for grouping the plurality of light metering regions based on the light metering signals from the light metering device, in such a manner that the adjacent light metering regions having similar light are grouped as one group.

    摘要翻译: 公开了一种在AE照相机中使用的测光计算装置。 测光计算装置包括:计量装置,用于在将目标场分成多个测光区域时执行测光操作,并输出对应于各个测光区域的测光信号;以及分组装置,用于将多个 基于来自测光装置的测光信号的测光区域,使得具有相似光的相邻测光区域被分组为一组。

    Exposure calculation device
    76.
    发明授权
    Exposure calculation device 失效
    曝光计算装置

    公开(公告)号:US5249015A

    公开(公告)日:1993-09-28

    申请号:US935437

    申请日:1992-08-26

    IPC分类号: G01J1/44 G03B7/28 H04N5/235

    摘要: An exposure calculation device comprises: first composite photometered value calculation apparatus means for classifying areas of divisional photometering means to a first pattern and calculating a composite photometered value for each classified area based on the photometered values of the divisional photometering areas contained in each classified area; first exposure value calculation means for calculating a first exposure value based on the calculated composite photometered value; second composite photometered value calculation means for classifying the areas of the divisional photometering means to a second pattern and calculating a composite photometered value for each classified area based on the photometered values of the divisional photometering areas contained in each classified area; second exposure calculation means for calculating a second exposure value based on the calculated composite photometered value; contribution factor calculation means for calculating contribution factors of the first and second exposure values in accordance with a photographing condition; and third exposure value calculation means for combining the first exposure value and the second exposure value in accordance with the contribution factors calculated by the contribution factors calculation means to calculate an exposure value to control the exposure.

    摘要翻译: 曝光计算装置包括:第一复合测光值计算装置,用于根据包含在每个分类区域中的分光测光区域的测光值,将分区测光装置的区域分类为第一图案,并计算每个分类区域的复合测光值; 第一曝光值计算装置,用于基于所计算的复合测光值计算第一曝光值; 第二复合测光值计算装置,用于将分割测光装置的区域分类为第二图案,并且基于每个分类区域中包含的分光测光区域的测光值,计算每个分类区域的复合测光值; 第二曝光计算装置,用于基于所计算的复合光度计算出第二曝光值; 贡献因子计算装置,用于根据拍摄条件计算第一和第二曝光值的贡献因子; 以及第三曝光值计算装置,用于根据由贡献因子计算装置计算的贡献因子来组合第一曝光值和第二曝光值,以计算曝光值以控制曝光。

    Process for producing silicon nitride ceramic articles
    78.
    发明授权
    Process for producing silicon nitride ceramic articles 失效
    氮化硅陶瓷制品的制造方法

    公开(公告)号:US4834926A

    公开(公告)日:1989-05-30

    申请号:US138956

    申请日:1987-12-29

    IPC分类号: C04B35/64 C04B35/584

    CPC分类号: C04B35/584

    摘要: A process for producing silicon nitride ceramic articles is disclosed, which includes the steps of preparing a mixed powder of silicon nitride and a sintering aid, shaping the mixed powder, sintering the shaped body, machining the sintered body in a desired shape, and then heating the machined sintered body in a temperature range from 550.degree. C. to 900.degree. C. in an oxidizing atmosphere. Alternatively, after the sintering, the sintered body is heated in a temperature range from 950.degree. C. to 1,400.degree. C. to crystallize an Si.sub.3 N.sub.4 grain boundary phase, the crystallized sintered body is machined into a desired shape, and the machined body is heated in a temperature range from 550.degree. C. to 900.degree. C. in an oxidizing atmosphere. Thereby, silicon nitride ceramic articles having high strength at room temperature can be obtained.

    摘要翻译: 公开了一种氮化硅陶瓷制品的制造方法,其包括以下步骤:制备氮化硅和烧结助剂的混合粉末,使混合粉末成形,烧结成形体,将烧结体加工成所需形状,然后加热 该加工的烧结体在氧化气氛中在550℃至900℃的温度范围内。 或者,烧结后,将烧结体在950℃〜1400℃的温度范围内加热,使Si 3 N 4晶界相结晶,将结晶烧结体加工成所需的形状,将加工体加热 在氧化气氛中在550℃至900℃的温度范围内。 因此,可以获得在室温下具有高强度的氮化硅陶瓷制品。

    PWM generating unit, image forming apparatus, and image forming method
    79.
    发明授权
    PWM generating unit, image forming apparatus, and image forming method 有权
    PWM发生单元,图像形成装置和图像形成方法

    公开(公告)号:US08886072B2

    公开(公告)日:2014-11-11

    申请号:US13735234

    申请日:2013-01-07

    申请人: Hiroyuki Iwasaki

    发明人: Hiroyuki Iwasaki

    IPC分类号: G03G15/00 G03G15/02 G03G15/06

    CPC分类号: G03G15/5004 G03G15/065

    摘要: A PWM generating unit may include a base duty setting register configured to store a base duty value that is set thereto, and a PWM generator to obtain a corrected duty value by correcting the base duty value based on first correction data and second correction data, and to generate a PWM signal according to the corrected duty value. The first correction data may be computed from a rotation period of a first rotational body, and the second correction data may be computed from a rotation period of a second rotational body.

    摘要翻译: PWM生成单元可以包括:基本占空比设定寄存器,被配置为存储对其设置的基本占空比值;以及PWM发生器,通过基于第一校正数据和第二校正数据校正基本占空比值来获得校正的占空比值,以及 以根据校正的占空比值产生PWM信号。 可以从第一旋转体的旋转周期计算第一校正数据,并且可以从第二旋转体的旋转周期计算第二校正数据。

    Image forming device including color photoconductor drums, photoconductor drum drive controlling method for controlling color photoconductor drums, and computer-readable recording medium
    80.
    发明授权
    Image forming device including color photoconductor drums, photoconductor drum drive controlling method for controlling color photoconductor drums, and computer-readable recording medium 有权
    图像形成装置,包括彩色感光鼓,用于控制彩色感光鼓的感光鼓驱动控制方法和计算机可读记录介质

    公开(公告)号:US08229310B2

    公开(公告)日:2012-07-24

    申请号:US12457824

    申请日:2009-06-23

    IPC分类号: G03G15/16 G03G15/01

    摘要: An image forming device has a full-color image formation mode to form a color image using color photoconductor drums and a monochrome image formation mode to form a monochrome image using a photoconductor drum. In the image forming device, a driving unit drives rotation of an intermediate transfer belt or a transfer transport belt. A control unit changes rotational speeds of the color photoconductors in a transition from the full-color image formation mode to the monochrome image formation mode to make a torque to the driving unit in the full-color image formation mode equal to a torque to the driving unit in the monochrome image formation mode. A separator unit separates the color photoconductors from the intermediate transfer belt or the transfer transport belt after the rotational speeds of the color photoconductors are changed by the control unit.

    摘要翻译: 图像形成装置具有使用彩色感光鼓形成彩色图像的全色图像形成模式和使用感光鼓形成单色图像的单色图像形成模式。 在图像形成装置中,驱动单元驱动中间转印带或转印输送带的旋转。 控制单元在从全色图像形成模式到单色图像形成模式的转变中改变彩色感光体的旋转速度,以使得全色图像形成模式中的驱动单元的扭矩等于对驾驶的转矩 单位在单色图像形成模式。 在通过控制单元改变彩色感光体的旋转速度之后,分离器单元将彩色感光体与中间转印带或转印输送带分离。