公开(公告)号：US20040042778A1

公开(公告)日：2004-03-04

申请号：US10646907

申请日：2003-08-25

Applicant: PENTAX Corporation

Inventor： Hiroshi Nomura

IPC: G03B017/00

CPC classification number: G02B7/102 ,  G02B7/022 ,  G02B7/026 ,  G02B7/08 ,  G02B15/14

Abstract: A retracting mechanism for a lens barrel includes a non-rotatable member having an engagement surface; and a frame movable along an axis relative to the non-rotatable member without rotation and having a holder, the holder being movable between an aligned position in which an imaging element thereof is substantially aligned with the axis and a displaced position in which the imaging element is displaced relative to the aligned position. The holder includes an engagement surface which contacts the engagement surface of the non-rotatable member during movement of the frame towards the non-rotatable member, and moves the holder from the aligned position to the displaced position. The non-rotatable member includes a guide key or a key groove, and the frame includes a corresponding key groove or guide key, the guide key and the key groove being slidably engageable with each other and guiding the frame.

Abstract translation: 用于镜筒的回缩机构包括具有接合表面的不可旋转构件; 以及框架，其相对于所述不可旋转构件沿着轴线可移动而不旋转并具有保持器，所述保持器可在其成像元件基本上与所述轴线对齐的对准位置和位移位置之间移动，在所述位移位置，所述成像元件 相对于对齐位置移位。 保持器包括接合表面，该接合表面在框架朝向不可旋转构件移动期间接触不可旋转构件的接合表面，并且将保持器从对准位置移动到移位位置。 不可旋转构件包括导向键或键槽，框架包括相应的键槽或导向键，导向键和键槽可滑动地彼此接合并引导框架。

公开(公告)号：US20040041915A1

公开(公告)日：2004-03-04

申请号：US10648313

申请日：2003-08-27

Applicant: PENTAX Corporation

Inventor： Makoto Mogamiya ,  Teruo Sakai

IPC: H04N005/225

CPC classification number: H04N5/2253

Abstract: An electronic still camera includes an image pickup element provided in an optically isolated space which is opened and closed by a shutter, and an image pickup optical system which makes object light incident upon the image pickup element. An image pickup light path defined between the shutter and the image pickup element is sealed by a sealing member.

Abstract translation: 电子静态照相机包括设置在由快门打开和关闭的光学隔离空间中的图像拾取元件和使物体光入射到图像拾取元件上的图像拾取光学系统。 限定在快门和图像拾取元件之间的图像拾取光路由密封构件密封。

公开(公告)号：US20040037204A1

公开(公告)日：2004-02-26

申请号：US10643899

申请日：2003-08-20

Applicant: PENTAX Corporation

Inventor： Shuichi Takeuchi

IPC: G11B007/135

CPC classification number: G11B7/139 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

Abstract: An optical system for an optical disc drive includes a light source, an objective lens and a collimator lens. The light source emits first and second light beams. The first light beam is for reproducing data from a digital versatile disc while the second light beam is for a compact disc. The objective lens is provided with a diffraction structure which is designed to focus the first light beam on a recording layer of the digital versatile disc and the second light beam on a recording layer of the compact disc. The collimator lens is disposed between the light source and the objective lens. The collimator lens adjusts the diverging/converging angle of the first and second light beams entering the objective lens. The change in spherical aberration of the first light beam caused by wavelength deviation from a design wavelength due to individual specificity of the light source is corrected by adjusting the diverging/converging angle of the first light beam emerging from the collimator lens.

Abstract translation: 用于光盘驱动器的光学系统包括光源，物镜和准直透镜。 光源发射第一和第二光束。 第一光束用于从数字通用光盘再现数据，而第二光束用于光盘。 该物镜设置有衍射结构，该衍射结构被设计成将第一光束聚焦在数字通用盘的记录层上，而第二光束聚焦在光盘的记录层上。 准直透镜设置在光源和物镜之间。 准直透镜调节进入物镜的第一和第二光束的发散/会聚角度。 通过调整从准直透镜出射的第一光束的发散/收敛角度来校正由于光源的个体特异性而导致的与设计波长的波长偏差引起的第一光束的球面像差的变化。

公开(公告)号：US20040017614A1

公开(公告)日：2004-01-29

申请号：US10610551

申请日：2003-07-02

Applicant: PENTAX Corporation

Inventor： Shuji Yoneyama

IPC: G02B015/14

CPC classification number: G02B15/173

Abstract: A zoom lens system includes a positive first lens group, a negative second lens group, a positive third lens group and a positive fourth lens group. Upon zooming, each of the first through fourth lens groups independently move along the optical axis. The positive first lens group includes a negative first lens element and a positive second lens element, in this order from the object. The zoom lens system satisfies the following conditions: n1-2>1.68nullnull(1)1.35

Abstract translation: 变焦透镜系统包括正的第一透镜组，负的第二透镜组，正的第三透镜组和正的第四透镜组。 在变焦时，第一至第四透镜组中的每一个独立地沿光轴移动。 正的第一透镜组包括负的第一透镜元件和正的第二透镜元件，从物体的顺序。 变焦透镜系统满足以下条件：n1-2> 1.68（1）1.35 <ΔX1/ f <1.50（2）其中n1-2表示正的第一透镜组的正透镜元件的折射率; DeltaX1表示正的第一透镜组从短焦距末端到长焦距末端的行进距离; f表示整个变焦透镜系统在焦距短焦距处的焦距。

公开(公告)号：US20040008320A1

公开(公告)日：2004-01-15

申请号：US10615191

申请日：2003-07-09

Applicant: PENTAX Corporation

Inventor： Moriyasu Shirayanagi

IPC: G02C007/06

CPC classification number: G02C7/06 ,  G02C7/061 ,  G02C7/068

Abstract: There is provided a multifocal spectacle lens having a front surface and a back surface each of the front surface and the back surface is formed as a multifocal surface or a progressive-power surface, distributions of surface power of the front surface and the back surface being different from each other.

Abstract translation: 提供一种具有前表面和后表面的前表面和后表面的多焦点眼镜透镜，其形成为多焦点表面或渐进屈光力表面，前表面和后表面的表面光焦度分布为 彼此不同。

公开(公告)号：US20040008248A1

公开(公告)日：2004-01-15

申请号：US10459432

申请日：2003-06-12

Applicant: PENTAX Corporation

Inventor： Mitsunori Iima ,  Toshimitsu Saito ,  Tadashi Minakuchi ,  Shoji Iwazaki

IPC: B41J015/14 ,  B41J027/00

CPC classification number: B41J2/473

Abstract: A multi-beam scanning device includes a light source for emitting a plurality of laser beams, a polygon mirror for deflecting the laser beams so that the laser beams scan across an object surface in a main scanning direction, an fnull lens disposed between the polygon mirror and the object surface, and a cylindrical lens that converges each laser beam in a vicinity of the polygon mirror in the auxiliary direction. A mirror is disposed between the light source and the cylindrical lens which deflects the laser beams in the auxiliary scanning direction. The mirror is rotatably supported by a mirror holder such that the traveling direction of the laser beams deflected by the mirror can be adjusted.

Abstract translation: 多光束扫描装置包括用于发射多个激光束的光源，用于使激光束偏转的多面镜，使得激光束沿主扫描方向扫描物体表面，设置在多面体镜之间的焦距透镜 和物体表面，以及在辅助方向上将多个反射镜附近的每个激光束会聚的柱面透镜。 在光源和沿辅助扫描方向偏转激光束的柱面透镜之间设置一个反射镜。 反射镜由反射镜保持器可旋转地支撑，使得可以调节由反射镜偏转的激光束的行进方向。

公开(公告)号：US20030231407A1

公开(公告)日：2003-12-18

申请号：US10456674

申请日：2003-06-09

Applicant: PENTAX Corporation

Inventor： Daisuke Koreeda ,  Koichi Maruyama

IPC: G02B003/02 ,  G02B013/18

CPC classification number: G11B7/1374 ,  G02B3/08 ,  G02B7/028 ,  G11B7/13922

Abstract: An objective lens for an optical pickup has a single lens element. One surface of the objective lens is divided into a central area and a peripheral area, and a step providing a level difference along a direction of the optical axis is formed at a boundary therebetween. The step provides a phase shift between light passing through the central area and the peripheral area. The level difference is formed such that a thickness on the peripheral area side is greater than a thickness on the central area side at the boundary. In one case, the objective lens satisfies a condition:0.83

Abstract translation: 用于光学拾取器的物镜具有单个透镜元件。 物镜的一个表面被分成中心区域和周边区域，并且在它们之间的边界处形成沿着光轴方向提供水平差的台阶。 该步骤提供穿过中心区域的光和外围区域之间的相移。 水平差形成为周边区域侧的厚度大于边界处的中央区域侧的厚度。 在一种情况下，物镜满足条件：0.83

公开(公告)号：US20030230459A1

公开(公告)日：2003-12-18

申请号：US10457483

申请日：2003-06-10

Applicant: PENTAX Corporation

Inventor： Takuji Hamasaki

IPC: F16D041/066

CPC classification number: F16D41/064

Abstract: A one-way rotational transfer mechanism includes a rotary input shaft having a surface lying orthogonal to an axis of the rotary input shaft, a hollow-cylindrical rotary output shaft positioned around the rotary input shaft to be rotatable relative to the rotary input shaft, a circumferentially-uneven-width-space forming portion formed on the rotary input shaft to be adjacent to the orthogonal surface to form at least one accommodation space between the rotary input shaft and the cylindrical inner peripheral surface, at least one rotatable member installed in the accommodation space, and a biasing device for pressing the orthogonal surface and the rotatable member toward each other. The circumferentially-uneven-width-space forming portion is shaped so that rotation of the rotary input shaft is transferred to the hollow-cylindrical rotary output shaft via the rotatable member to which rotation is given from the orthogonal surface.

Abstract translation: 单向旋转传递机构包括具有与旋转输入轴的轴正交的表面的旋转输入轴，围绕旋转输入轴定位成能够相对于旋转输入轴旋转的中空圆柱形旋转输出轴， 形成在所述旋转输入轴上以与所述正交表面相邻的周向不均匀宽度空间形成部分，以在所述旋转输入轴和所述圆柱形内周面之间形成至少一个容纳空间;至少一个可旋转构件， 以及用于将正交表面和可旋转构件朝向彼此挤压的偏置装置。 周向不均匀宽度空间形成部分被成形为使得旋转输入轴的旋转通过从正交表面旋转的可旋转构件传递到中空圆柱形旋转输出轴。

公开(公告)号：US20030223122A1

公开(公告)日：2003-12-04

申请号：US10431464

申请日：2003-05-08

Applicant: PENTAX Corporation

Inventor： Hiroyasu Ozaki

IPC: G02B015/14

CPC classification number: G02B15/14

Abstract: A zoom lens system includes a first to a third lens groups. Upon zooming, the distance between the first and second lens groups increases, the distance between the second and third lens groups decreases. Each lens group is positioned closest to the object at the long focal length extremity. The third lens group includes first and second sub-lens groups. The first sub-lens group with at least one aspherical surface is positioned at the object-side end a reference distance, and the negative second sub-lens group is positioned at the image-side end thereof. The zoom lens system satisfies the following conditions: 1.7

Abstract translation: 变焦透镜系统包括第一至第三透镜组。 在变焦时，第一和第二透镜组之间的距离增加，第二和第三透镜组之间的距离减小。 每个透镜组在长焦距末端处定位成最接近物体。 第三透镜组包括第一和第二子透镜组。 具有至少一个非球面的第一子透镜组在物体侧端部位于参考距离处，并且负的第二子透镜组位于其图像侧端。 变焦镜头系统满足以下条件：1.7

公开(公告)号：US20030222997A1

公开(公告)日：2003-12-04

申请号：US10446849

申请日：2003-05-29

Applicant: PENTAX Corporation

Inventor： Kohei Iketani

IPC: H04N005/20

CPC classification number: H04N5/243 ,  A61B1/045 ,  H04N5/20 ,  H04N5/202 ,  H04N17/002 ,  H04N2005/2255

Abstract: An automatic gain control device for an electronic endoscope is provided and comprises a controllable gain amplifier, an A/D converter, a histogram circuit, and a CPU. The controllable gain amplifier amplifies image signals from an imaging device. Amplified image signals from the controllable gain amplifier are input to the A/D converter. A histogram of the amplified image signals from the controllable gain amplifier is produced by the histogram circuit when an image taken in a white-balance test accessory is taken. By using the CPU, the gain of the controllable gain amplifier is adjusted in accordance with the determination of whether a saturated pixel exists for signals in the tolerance range of the A/D converter, so that a linear region of the image signals from the controllable gain amplifier substantially coincides with the tolerance range.

Abstract translation: 提供了一种用于电子内窥镜的自动增益控制装置，包括可控增益放大器，A / D转换器，直方图电路和CPU。 可控增益放大器放大来自成像装置的图像信号。 来自可控增益放大器的放大图像信号被输入到A / D转换器。 当采用白平衡测试附件中拍摄的图像时，直方图电路产生来自可控增益放大器的放大图像信号的直方图。 通过使用CPU，根据对A / D转换器的公差范围内的信号是否存在饱和像素的确定来调整可控增益放大器的增益，使得来自可控制的图像信号的线性区域 增益放大器基本上与公差范围一致。