Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 7269360 | High dynamic receiver for free space optics application A receiver for an optics telecommunication system, the receiver comprises a first receiving device and means for focusing a received light beam carrying a signal towards such first receiving device. The receiver is characterized in that it further comprises at least... | 09/11/2007 |
| 7224473 | Strobe light and laser beam detection for laser receiver A laser receiver detects a thin beam of laser light and distinguishes between the beam of laser light and an omni-directional pulse of light from a strobe by the use of an additional photo-detector. The device takes into account the possibility that the additional p... | 05/29/2007 |
| 7022963 | Laser receiver A laser receiver for detecting the position of incidence of a beam of laser light thereon includes a first photodetector and a second photodetector aligned in series with each other and spaced apart from each other by a gap. If the laser is evenly distributed betwee... | 04/04/2006 |
| 6750953 | Position detecting laser receiver Receiver circuits are provided for detecting a target light source such as a swept laser beam. The circuits include a photodetector adapted to produce a first detector output signal and a second detector output signal where the relative amplitudes of the first and s... | 06/15/2004 |
| 5973313 | Method and apparatus for generating ratiometric control signals A ratiometric sensor is formed of a first photodiode connected in series with an electronic component, such as a second photodiode or a resistor, between a source of first voltage and a source of second voltage. The ratiometric sensor supplies a "ratiomet... | 10/26/1999 |
| 5719389 | Composite optical device A laser coupler comprises photodiodes formed on a photodiode IC, a microprism mounted on the photodiode IC to lie on the photodiodes, and a semiconductor laser mounted nearby on the photodiode IC such that a beam of light entering into the microprism thro... | 02/17/1998 |
| 5666574 | Photo-detection methods and apparatus Light is made incident on a pair of photo-sensors having different sensitivity characteristics. One of them has higher spectroscopic sensitivity than the other within a specified range of wavelength, but the other has spectroscopic sensitivity over a wide... | 09/09/1997 |
| 5650608 | Method and apparatus for generating ratiometric control signals A ratiometric sensor is formed of a first photodiode connected in series with an electronic component, such as a second photodiode or a resistor, between a source of first voltage and a source of second voltage. The ratiometric sensor supplies a "ratiomet... | 07/22/1997 |
| 5347563 | Method for determining the function representing the effect of non-reciprocity of a radiographic film The invention relates to radiology systems and, more particularly in such systems, to a method that enables the effect of non-reciprocity of the radiographic film to be determined. This effect of non-reciprocity is expressed by coefficients CNRD(di | 09/13/1994 |
| 4880972 | Fiber-optic measuring apparatus using luminescent material The present invention relates to a fiber-optic measuring apparatus for measuring physical quantities, such as position, speed, acceleration, force, pressure, elongation, temperature, etc., comprising at least one optic fiber for conducting light between a... | 11/14/1989 |
| 4870264 | Device for optically measuring the shading of translucent panes A device for measuring the shading of a translucent pane having an exterior side and an interior side comprising first and second photoelectric sensors for measuring unattenuated daylight, each of the sensors having a photosensitive surface and a spectral... | 09/26/1989 |
| 4850698 | Method of determining measuring data on an optical transmission path by means of optical sensor The invention relates to a method of taking measurements along an optical transmission path by means of an optical sensor. The optical sensor includes an optical converter whose optical attenuation properties can be influenced according to the value to be... | 07/25/1989 |
| 4769539 | Electro-optical roll angle detector An electro-optical instrument means for measuring the relative angle of roll about an optical axis extending between a sending unit and a receiving unit. The measurement is independent of relative displacements in pitch and yaw within the dimensional limi... | 09/06/1988 |
| 4761546 | Optical displacement measuring system with nonlinearity correction An optical displacement measuring system utilizing a triangulation is so arranged that light receiving means receives light reflected back from an object to be measured and generates a pair of output signals having mutually opposite values and responsive ... | 08/02/1988 |
| 4725138 | Optical wavefront sensing system A wavefront sensor for detecting distortion in light wavefronts is described in which the wavefront is divided into a plurality of subapertures and light amplified or intensified and imaged as spots of light from each subaperture onto a filter mask. The f... | 02/16/1988 |
| 4712004 | Method and apparatus for compensating fiber optic lead and connector losses in a fiber optic sensor by using a broadband optical source and multiple wave retardation Method and apparatus for compensating a phototransducer system for fiber optic transmission losses and optical source power fluctuations includes generating a broadband source light beam having a plurality of spectral components. The source light beam is ... | 12/08/1987 |
| 4709145 | Method and apparatus for compensating fiber optic lead and connector losses in a fiber optic sensor by using a dual wavelength optical source and matched polarizer Apparatus and method for compensating a photo sensor for fiber optic cable lead/connector losses and optical source power fluctuations includes a specially selected broadband optical source used in conjunction with a photoelastic fiber optic transducer th... | 11/24/1987 |
| 4701048 | Input circuit for distance measuring apparatus An input circuit which converts currents produced from a plurality of photo-sensitive elements arranged in a distance measuring apparatus. The input circuit has a switching element series connected to at least one of the photo-sensitive elements. When the... | 10/20/1987 |
| 4701611 | Reflectivity compensated fiber optic sensor A fiber optic proximity detector for use in sensing the relative position of an object or change thereof wherein the light is reflected by the target surface and returned along the transmitting fibers and utilized along with the reflected light returned a... | 10/20/1987 |
| 4642803 | Optical data retrieval system for multi-characteristic reflective data storage media A system for recovering data, both prerecorded and user data, from a reflective optical data storage medium, with the further capability of distinguishing data from foreign particulate matter on the data disk. A pair of detectors measures the fraction of ... | 02/10/1987 |
| 4008391 | Device for measuring lighting effectiveness Instrument for measuring the quality of light illuminating a work area. The device comprises four photocells arranged in a cubical housing facing in different directions and connected to calibrated operational amplifiers and an analog divider. A volt mete... | 02/15/1977 |
