公开(公告)号：EP0363347B1

公开(公告)日：1995-07-05

申请号：EP89890230.9

申请日：1989-09-04

Applicant: POLAROID CORPORATION

Inventor： Plummer, William T.

IPC: G06K15/12 ,  G02B27/00

CPC classification number: G02B19/0057 ,  G02B3/08 ,  G02B5/3083 ,  G02B19/0009 ,  G02B19/009 ,  G02B27/09 ,  G02B27/0972 ,  H01S3/005

公开(公告)号：EP0327929A3

公开(公告)日：1991-11-27

申请号：EP89101633.9

申请日：1989-01-31

Applicant: POLAROID CORPORATION

Inventor： Plummer, William T.

IPC: G06K15/22 ,  H04N1/04

CPC classification number: H04N1/0678 ,  G01D5/264 ,  G01D5/36 ,  H04N1/047 ,  H04N1/06 ,  H04N2201/02416 ,  H04N2201/02439 ,  H04N2201/03108 ,  H04N2201/0471 ,  H04N2201/04724 ,  H04N2201/04727 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04734 ,  H04N2201/04755 ,  H04N2201/04756 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04794

Abstract: A system for precisely positioning a printing element relative to a rotating drum, as in a drum printer, employs two position signals for alignment purposes. A pair of linear grids is disposed along a path of travel of the printing element for generating, with the aid of optical beam and sensor devices, a periodic electric signal which varies in accordance with printing element position. One of the grids is stationary and the second of the grids moves with a carriage supporting the printing element. An encoder positioned alongside the drum is operative with a set of markings having a variation in spatial frequency, or a grid overlay, to produce an alternating electric signal which varies in accordance with rotational position of the drum. Motors which rotate the drum as well as a lead screw which translates the printing element may be constructed as synchronous motors to permit phase locking to each other. Circuitry responsive to periodic signals outputted by the linear grids and the encoder introduce phase shift between motor drive signals to align position of the printing element with position of the drum independently of any backlash which may be present between the lead screw and the carriage driven by the lead screw.

公开(公告)号：EP0363347A2

公开(公告)日：1990-04-11

申请号：EP89890230.9

申请日：1989-09-04

Applicant: POLAROID CORPORATION

Inventor： Plummer, William T.

IPC: G06K15/12 ,  G02B27/00

CPC classification number: G02B19/0057 ,  G02B3/08 ,  G02B5/3083 ,  G02B19/0009 ,  G02B19/009 ,  G02B27/09 ,  G02B27/0972 ,  H01S3/005

Abstract: Phase array apparatus for use with a lens system to provide a substantially smooth, uniform image of a laser array comprised of a multiplicity of lasers wherein the phase of the radiation emitted by the lasers alternates by an amount which is substantially equal to 180°. The phase array includes: (1) phase means, disposed substantially at a far-field image of the laser array formed by the lens system, which far-field image comprises two prominent lobes, for changing the phase of the radiation in the two prominent lobes by 90° with respect to the phase of the remaining radiation in the far-field image in order to convert the near-field image of the laser array into a finite-length sine pattern and (2) means, such as a wedge prism or a split lens, disposed preferably near a far-field image but not at a near-field image, for angularly shifting one half of the phase shifted far-field image with respect to the other to form a pair of near-field images which are spatially shifted with respect to each other by one-half cycle of the sine wave, whereby a substantially smooth, uniform image of the laser array is formed.

Abstract translation: 相位阵列装置，用于与透镜系统一起提供由多个激光器组成的激光器阵列的基本平滑，均匀的图像，其中由激光器发射的辐射的相位交替大致等于180°的量。 相位阵列包括：（1）基本上设置在由透镜系统形成的激光器阵列的远场图像的相位装置，该远场图像包括两个突出的凸角，用于改变两个突出的辐射的相位 为了将激光器阵列的近场图像转换成有限长度的正弦图案，以及（2）诸如楔形棱镜的装置，将相对于远场图像中的剩余辐射的相位相对于90°， 或分离透镜，优选地设置在远场图像附近而不是在近场图像处，用于相对于另一个将相移的远场图像的一半角度地移位以形成一对近场图像，其中 相对于正弦波的二分之一周期相对于空间偏移，由此形成激光器阵列的基本平滑均匀的图像。

公开(公告)号：EP0277714A2

公开(公告)日：1988-08-10

申请号：EP88300291.7

申请日：1988-01-14

Applicant: POLAROID CORPORATION

Inventor： Plummer, William T. ,  MacKenzie, Hugh R.

IPC: H04N9/04

CPC classification number: H04N5/2254 ,  H04N5/349 ,  H04N9/045

Abstract: A method and apparatus for improving the quality of an electronic image generated by a charge coupled device (CCD) array (28) that senses scene images through a prism (28A, 28B) or prismatic filter movable into and out of the path of image-containing light rays impinging on the colour filter overlying the CCD array that alternately shifts the scene image between colour filters of the CCD array that absorb particular scene image colours and those that transmit these colours to their associated CCDs while in the case of the prismatic filter absorbing the dominant scene colour generated by the coloured optical filter. Scene image signals generated by a CCD array (18) in this manner are processed such that their spatial relationship with respect to the second scene image is precisely monitored and electronically counter-shifted for subsequently scene image reconstruction. By shifting the scene image between individual CCDs having different colour optical filters, most of the CCDs in the CCD array can generate image signals for two different scene colours or scene colour combinations and thereby improve the image resolving capabilities and/or the colour balance of electronic images generated by the CCD array.

Abstract translation: 一种用于提高由电荷耦合器件（CCD）阵列（28）生成的电子图像的质量的方法和装置，其通过棱镜（28A，28B）感测场景图像，或者可移入和移出图像路径的路径， 包含照射在CCD阵列上的滤色器上的光线，其将吸收特定场景图像颜色的CCD阵列的滤色器和将这些颜色传播到其相关联的CCD的那些交替地移动场景图像，同时在棱镜滤光器吸收的情况下 由彩色滤光片产生的主要场景颜色。 以这种方式由CCD阵列（18）产生的场景图像信号被处理，使得它们相对于第二场景图像的空间关系被精确地监视并电子地逆位移以用于随后的场景图像重构。 通过在具有不同颜色滤光片的各个CCD之间移动场景图像，CCD阵列中的大多数CCD可以生成两种不同场景颜色或场景颜色组合的图像信号，从而提高图像分辨能力和/或电子色彩平衡 由CCD阵列产生的图像。

公开(公告)号：EP0257713A3

公开(公告)日：1988-05-11

申请号：EP87201577

申请日：1987-08-20

Applicant: POLAROID CORPORATION

Inventor： Ford, Vernon E. ,  Jones, Jeremy K. ,  Mader, John J. ,  Plummer, William T.

IPC: G11B05/58

CPC classification number: G11B5/59677 ,  G11B5/82

Abstract: Magnetic recording media, and magnetic recording systems using such media, are disclosed which incorporate a light-transmitting optical grating at least substantially coextensive with the magnetic recording area. A second light-transmitting optical grating is associated with the magnetic transducer or read/write head. A moire pattern is produced by light transmitted through both optical gratings, and changes in the moire pattern resulting from changes in the alignment of the optical gratings resulting from movement of the read/write head relative to the media are utilized to provide servo information to keep the magnetic transducer aligned with the magnetic track. Higher magnetic recording capacities may be obtained using such media and systems, since none of the magnetic recording area is used for servo information.

公开(公告)号：EP0160312A3

公开(公告)日：1988-01-13

申请号：EP85105362

申请日：1985-05-02

Applicant: POLAROID CORPORATION

Inventor： Plummer, William T.

IPC: B29C45/26

CPC classification number: B29C45/0416 ,  B29C45/26

Abstract: 57 Apparatus for forming miniaturized optical components such as fiber optics connector terminals in which a three-part mold set is employed to attain precise concentricity of mold cavity formations carried by two of the three mold parts which are movable axially relative to and positioned by the third or central one of the three parts. The two movable parts are each located by oppositely diverging frustoconical reference surfaces on the central part and include mold surface component 7 . which are axially positionable relative to the parts in which they are carried. The central part is supported by a shuttle for movement between a molding position and an ejection position, appropriate ejection pins being located in spaced relation to the molding position so as not to interfere with the molding operation. Precise concentricity and axial location of the three mold parts is effected in substantial measure by application of a mold closing force exclusively along the common axis of the three parts and under a force limited to a pre-established value.

公开(公告)号：EP0188711A2

公开(公告)日：1986-07-30

申请号：EP85115305.6

申请日：1985-12-03

Applicant: POLAROID CORPORATION

Inventor： Plummer, William T.

IPC: G01J1/04

CPC classification number: G01J1/04 ,  G01J1/0411 ,  G01J1/0437 ,  G01J1/0492

Abstract: A photoresponsive apparatus is disclosed which in- dudes a photoresponsive device that provides an output or response having a characteristic which varies as a function of the radiant power and wavelength incident on a photoresponsive surface thereof. Included is a spectral filtering means associated with an optical assembly so as to provide the assembly with different f-number zones for each of the respectively different proportionalities of wavelengths such that the spectral composition of incident radiation reaching the surface is controlled by the spectral filtering means to effect a desired change in the response of the photoresponsive device.

公开(公告)号：EP0242852B1

公开(公告)日：1994-06-08

申请号：EP87105847.5

申请日：1987-04-21

Applicant: POLAROID CORPORATION

Inventor： Plummer, William T.

IPC: G03B27/72 ,  G03B27/73

CPC classification number: G03B27/725 ,  G03B27/735 ,  H04N1/50 ,  H04N1/502 ,  H04N1/56 ,  H04N1/60

公开(公告)号：EP0220859B1

公开(公告)日：1993-03-03

申请号：EP86307764.0

申请日：1986-10-08

Applicant: POLAROID CORPORATION

Inventor： Alston, Lawrence E. ,  Plummer, William T. ,  Levinstone, Donald S.

IPC: H04N5/335

CPC classification number: H04N5/2354 ,  H04N5/35581 ,  H04N5/3722

Abstract: An electronic imaging camera is provided with a substantially expanded dynamic exposure range by implementing two succeeding exposure intervals under conditions where the exposure defining parameters are substantially different and thereafter selectively choosing between the electronic information signals sensed during the two succeeding exposure intervals to provide an output signal from which a visible image of the subject may be reconstructed thereafter.

公开(公告)号：EP0150860B1

公开(公告)日：1992-01-29

申请号：EP85101060.3

申请日：1985-02-01

Applicant: POLAROID CORPORATION

Inventor： Plummer, William T.

IPC: G02B6/38

CPC classification number: G02B6/2817 ,  G02B6/32 ,  G02B6/322