Abstract: An improvement to the above described techniques for producing a holographic stereogram. The present invention uses a hologram lens in the process of creating the holographic stereogram, and also uses Fourier transforms of the images for projection onto the recording medium, not the images themselves. A lens between the generated images and the recording medium performs the inverse Fourier transform to convert the image back into a normal image.

Abstract: An assembly structure and method for an integrated laser/detector device with a mirror at an angle to redirect the laser beam to a medium. The mirror is not attached to the circuit board with the laser/detector as in the prior art, but rather is mounted separately in the housing immediately above the circuit board. This allows the circuit board to be moved laterally toward and away from the mirror during assembly to adjust the reflected beam along a first direction so that it contacts the photodetector. A hologram lens is mounted above the mirror, and can be rotated to adjust the reflected beam to hit the photodetector along a second, orthogonal direction. In one embodiment, two laser beams are generated, and two hologram lenses are used to separately adjust the two beams.

Abstract: An optical device that includes a grating (for example a moving reflective grating) and a light source disposed opposing a predetermined side of the grating. The optical device also includes a first reference grating (e.g., a fixed grating) disposed between the light source and the grating, a detector disposed opposing the predetermined side of the grating and a second reference grating (e.g., a fixed grating) disposed between the detector and the grating. The grating, first reference grating and light source are configured for movement relative to one another. For example, the grating can be moveable while the light source and first reference grating are fixed.

Abstract: A system and method for facilitating delivery and return service between a delivery party and a receiving party. These parties may or may not have pre-registered to use the locker system. The system has locker modules (35) and a system controller (10). The system controller (10) interfaces with the locker modules (35) via a network (30). Each of the locker modules (35) has locker units for depositing and retrieving the goods and a locker controller coupled to control the locker units. Together, the system controller (10) and the locker controller enable steps of the method by processing a user input that is received via a user input interface coupled to the system controller (10) and the locker controller. The user input is associated with the receiving party and provided by the delivery party. Thereafter, the system controller (10) generates a notification message having an identification code for transmitting to the receiving party.

Abstract: An improvement to the above described techniques for producing a holographic stereogram. The present invention uses a hologram lens in the process of creating the holographic stereogram, and also uses Fourier transforms of the images for projection onto the recording medium, not the images themselves. A lens between the generated images and the recording medium performs the inverse Fourier transform to convert the image back into a normal image.

Abstract: A dot matrix system, which uses an electronic display panel as a diffractive optical device to produce two laser beams. The interference pattern of these two beams, at the focal plane of a lens, forms a grating spot with a shape and beam profile determined by the wavefronts diffracted by the electronic display device. The invention uniquely combines aspects of the interfering beam prior art and the prior art using an imaging display. Instead of simply reducing a diffraction image on a display device as in the imaging display prior art, the invention puts two different Fourier transforms on the display, the laser beam interacts with these Fourier transforms, and a lens focuses the two beams on the recording medium, with the two beams interfering with each other to produce the desired grating pattern. Because multiple orders of the wavefront will be produced by the display device, a light blocking element is used, with an aperture to pass only the desired order(s) of the beams.

Abstract: An optical track sensing device, and in particular to an optical sensor for detecting optical tracking information on a moving medium (or stationary medium and moving sensor). The sensing device relies on self-imaging, rather than optics, and obtains a very acceptable detected signal at other than the self imaging plane of the reflection off a moving medium. This provides more flexibility in the placement of the sensor, while still allowing the elimination of optical components by relying on self-imaging instead. In addition, by providing a pattern over the photodetector with a smaller period, higher frequency harmonics are detected, allowing more precise detection of the position of the medium. In one embodiment, the period of the detector pattern is selected to detect the higher harmonics of the grating on the moving medium.

Abstract: An optical pickup with two lasers for CD and DVD uses a grating to diffract one beam to the detector used by the other beam. This requires only one beam to be diffracted, allowing the diffraction pattern to be varied to compensate for different spacings between the lasers. A single, 4-quadrant detector is used to detect the returned beams from both lasers. The returned beam of the first laser passes through the grating element undiffracted, by passing through a portion without a grating pattern. The position of the detector is aligned with respect to this first beam. The grating diffracts the returned beam from the second laser to the same detector. The separation of the grating from the detector can be adjusted so that the returned beam from the second laser is also perfectly aligned with the detector.

Abstract: An optical track sensing device, and in particular to an optical sensor for detecting optical tracking information on a moving medium (or stationary medium and moving sensor). The sensing device relies on self-imaging, rather than optics, and obtains a very acceptable detected signal at other than the self imaging plane of the reflection off a moving medium. This provides more flexibility in the placement of the sensor, while still allowing the elimination of optical components by relying on self-imaging instead. In addition, by providing a pattern over the photodetector with a smaller period, higher frequency harmonics are detected, allowing more precise detection of the position of the medium. In one embodiment, the period of the detector pattern is selected to detect the higher harmonics of the grating on the moving medium.

Abstract: A toy machine gun or a light-weight projectile launching device including a projectile conveying mechanism and a projectile shooting mechanism. The projectile shooting mechanism includes a projectile shooting pass which is formed by a first and a second opposing projectile engaging surfaces which are adapted to friction drag and compressively engage the projectile to be shot. At least one of the rotating surface is preferably driven by a motor. The projectile conveying mechanism conveys a projectile towards said shooting pass for launching.

Abstract: Disclosed are a power control apparatus and method thereof capable of controlling a load power by adjusting an AC power voltage supplied to a streetlamp, a computer system, and electronic equipment according to a load characteristic and object. The power control apparatus comprising: a current coil for varying a voltage; a current detecting section for detecting a current and outputting a data, an input voltage detecting section for detecting a voltage; an output voltage detecting section for detecting the voltage; a system controller for outputting a plurality of trigger control signals controlling a peripheral equipment and identifying an operation condition of a system; a switching section operated according to the plurality of trigger control signals; and an output voltage adjusting section for determining increase or decrease of the flux linkage of the current coil.

Abstract: The present laser/detector hybrid with a turning mirror integrated into the photo detector chip. This allows a smaller package for the device and a simpler method for producing the laser/detector device. The laser beam is emitted along the surface of the chip towards a groove cut in the chip. A mirror is mounted in the groove, and the mirror has a corrugated structure so that it will reflect the beam and convert it into multiple beams at the same time.

Abstract: A method for verifying correct operation and functional stability of a tester for semiconductor devices is disclosed. In addition, a method for creating a standard device for use with the tester is also disclosed. In creating a standard device according to the present invention, the tester repeatedly tests a candidate device a predefined number of times and evaluates the test results to determine whether the candidate device is suitable for use as a standard device. In verifying the operation and functional stability of a semiconductor device tester, data generated by repeatedly testing a standard device a predefined number of times are compared to recorded reference data of previous tests of the standard device.

Abstract: A wavelength sensitive hologram which combines the 780 nm laser beam and the 650 nm laser beam to produce a compact DVD optical pickup. The 780 nm laser beam is incident on the hologram at an angle so that the first order diffraction from the hologram propagates along the optical axis of the hologram. The wavefront recorded on the hologram also contains aberration correction components so that the focused 780 nm laser beam on the CD substrate is nearly perfect or at least diffraction limited. The 650 nm laser beam is incident normal to the hologram plane so that the 0 order diffraction of the 650 nm laser beam remains propagating along the optical axis of the hologram.

Abstract: An optical sensor consisting of a nearly monochromatic point source such as a light emitting diode (LED) or a vertical cavity surface emitting laser (VCSEL) which is mounted on a multiple element detector. When this sensor is placed near a moving object with a reflective periodic pattern on its surface (such as an optical disk), it can produce a signal which can be used to control the position of the object. Unlike other sensors which often use lenses to project the light emitted by the light source onto the object and collect the light reflected from the object and project them onto a photodector, this new sensor performs the tasks of object illumination and light collection without the use of any optical component. A self-imaging principle is used by placing the detector on the self-imaging plare of the object to detect the motion of the object.

Abstract: Multiple element laser diode assembly incorporating a cylindrical microlens and at least one of an astigmatism correcting element and a collimating element. The use of a single purpose cylindrical microlens, for instance for circularizing a beam of laser light output from said diode, in operative combination with at least one additional optical element for correcting astigmatism and for collimating the beam enables the passive mounting of the several optical elements of the assembly without an active alignment step. The cylindrical microlens may incorporate as single powered surface, as may the astigmatism correction element. Alternatively, the astigmatism correction element may comprise a tilted optical plate. The collimating lens may be a spherical lens.

Abstract: The present invention provides a semiconductor laser and a photodector on a supporting substrate. The supporting substrate is inserted into a housing with a 45 degree mirror for the purpose of redirecting the light emitting through the edge of the laser to propagate along the optical axis of the hybrid device. A hologram lens is mounted at the output end of the hybrid device to diffract the returned beam to the photosensitive ares of the detector without returning through the mirror.

Abstract: A method for packaging a hybrid device which has a semiconductor laser diode and photodetectors. The laser diode is mounted on a silicon chip (a "silicon submount") containing a photodetector for monitoring the laser power. An array of silicon submounts are mounted on a heat-sink plate which consists of a heat-sink substrate covered with a metal layer. The metal layer is cut in multiple places down to the heat-sink substrate to form multiple conductive strips. The heat-sink plate with the silicon submounts is then covered with a heat-sink cover plate which has identations formed to provide cavities for the silicon submounts. In addition, cavities are provided to allow connections to the conducting metal strips. The combined assembly is then sliced into bars exposing an opening for the laser diode and openings for connections to the conductive strips. The bars are turned on their sides and laminated to a glass substrate to form a front window for the laser diode assembly.

Abstract: A compact hybrid laser and photodetector device is disclosed. A heat sink and a metal layer are bonded together, and then mounted on a circuit board. A semiconductor laser chip is mounted on the metal layer. The edge of the metal layer serves as a bonding pad for a wire connection to a bonding pad on the circuit board. A rear-facet photodetector is mounted on the circuit board beneath the semiconductor laser chip. A multiple element photodetector is also mounted on the circuit board for detecting a signal reflected off a media. Preferably, the rear facet and multiple element photodetectors are a single integrated circuit.