Class 356/233 - With variable light aperture size

Subclass of Class 356 - Optics: measuring and testing
Definition: Subject matter including an aperture in the optical path
No. of patents: 23
Last issue date: 10/30/2007

Number	Title	Issue Date
7289385	Bank selection signal control circuit for use in semiconductor memory device, and bank selection control method Memory bank selection control circuits and methods are provided which improve the data sensing margin for data sense amplifiers in a multi-bank semiconductor memory structure. In one aspect, a bank selection signal control circuit includes a bank switch control unit...	10/30/2007
7184357	Decoding circuit for memory device Provided is a decoding circuit for a memory device which is improved in an operation of chip so as to enable the operation to be predictable by making a decoded result corresponding to an undefined code get a specific value. The decoding circuit for a memory device ...	02/27/2007
7119902	Calibration for optical filter Calibrating each of a plurality of driven optical filters. The color parameters of the driven optical filters are characterized for the individual optical filter. These color parameters are used as calibration data to calibrate more standard information. ...	10/10/2006
7092312	Pre-emphasis for strobe signals in memory device A memory device has a number of data terminals for transferring data signals and a number of strobe terminals for transferring strobe signals representing timing information of the data. The strobe terminals have a fixed signal level in an inactive mode of the memor...	08/15/2006
7092098	Calibration for optical filter Calibrating each of a plurality of driven optical filters. The color parameters of the driven optical filters are characterized for the individual optical filter. These color parameters are used as calibration data to calibrate more standard information. ...	08/15/2006
7061826	Command decoder of semiconductor memory device A command decoder is provided for controlling internal circuits of a semiconductor chip to operate in synchronism with a first internal clock signal having a pulse width, which is twice as wide as that of an external clock signal, and a second internal clock signal ...	06/13/2006
7057953	Semiconductor memory device with stable auto-precharge operation A semiconductor memory device having a plurality of banks for stably performing a write with auto-precharge (WRA) command or a read with auto-precharge (RDA) command, including: a bank signal generation unit for generating an interrupt bank signal based on a bank ad...	06/06/2006
7016129	Optical filter, method of making optical filter, light amount adjusting apparatus and optical equipment An optical filter which can be manufactured at low cost and is excellent in optical characteristics is disclosed. The optical filter has a transparent substrate and a first layer which is formed on the surface of the transparent substrate. Here, the first layer has ...	03/21/2006
6970295	Optical beam expander with a function of laser power detection An optical beam expander with a function of laser ray power detection provides an electric signal for feedback controlling laser ray power. By testing the power stability within a temperature range of 15 to 25° C., this apparatus demonstrates that it can stabilize ...	11/29/2005
6937338	Calibration for optical filter Calibrating each of a plurality of driven optical filters. The color parameters of the driven optical filters are characterized for the individual optical filter. These color parameters are used as calibration data to calibrate more standard information. ...	08/30/2005
6535411	Memory module and computer system comprising a memory module A memory module has one or more memory devices, a clock generator providing clocking signals, and a clocking topology providing the clocking signals to the memory devices(s)....	03/18/2003
6483579	Clock synchronization semiconductor memory device A clock synchronization semiconductor memory device in which the pre-charging time tRP can be accelerated by the variable delay time for write recovery. There is provided a unit for checking whether or not at least one clock cycle before the inputting of ...	11/19/2002
6268918	Three-dimensional input device An apparatus and method for detecting a three-dimensional image. The apparatus includes a projector which projects a reference light on an object; an image sensor which senses an image of the object; and a controller for controlling the projector and the ...	07/31/2001
5991016	Apparatus for producing variable levels of uniform light flux Apparatus are disclosed that are operable to changes the intensity, per unit surface area, of an irradiation laser light flux. A typical apparatus comprises, on an optical axis, an irradiation laser light source, a stop defining an aperture, and an optica...	11/23/1999
5969809	Light-measuring device for accurate and continuous measurement of light intensity A light-measuring device is disclosed for continuously and accurately measuring the intensity of light beams of from low intensity to high intensity. The intensity of a light beam to be measured is measured by a photodiode. A bias voltage is applied to th...	10/19/1999
5526451	Photometric instrument with optical fibers for analyzing remote samples In a spectrophotometer, each of a plurality of source optical fibers is selectively receptive of source radiation and carries the radiation to a corresponding selected liquid sample cell. A corresponding return optical fiber returns transmitted radiation ...	06/11/1996
5060283	Method and system for reading images with a movable light intercepting plate An image reading method and apparatus includes detecting an optimal position of a slot of a light intercepting plate by reading an output level from a light sensor which receives light passing through the slit, moving the light intercepting plate to an op...	10/22/1991
5007717	Real time analyzer for pulsed laser systems A technique for the simultaneous measurement, in real time, of the changes in mode size, pulse length, and power of a wavetrain of laser pulses delivered by mode-locked or other pulsed laser systems contemplates directing respective portions of the beam a...	04/16/1991
4909600	Light chopper assembly A light chopper wheel for use in a video system that is capable of producing either black and white or full color images. The wheel is formed of two circular sheet metal plates that are joined in back-to-back contact. A first series of circumferentially s...	03/20/1990
4737029	Photometer A photometer is providing including light detecting means for detecting incident light and generating electric signals in response thereto as a measure of the incident light thereon, and optical means for guiding light to the light detecting means from a ...	04/12/1988
4660091	Exposure level correction for film-to-video conversion The average video level of a video camera is corrected for film-to-video conversion by having a film aperture plate with a light-passing opening that is slightly enlarged with respect to the image area of the film. Non-image light passes through a periphe...	04/21/1987
4610537	Photographic image information detecting device An image information detecting device for detecting the density for printing is required to cover a wide dynamic range corresponding to the density scope of the original film as well as to cover the fluctuation in values caused by different lamps and filt...	09/09/1986
4520702	Inspection and cutting apparatus An article inspection and cutting apparatus (10) is described for high production processing of elongated articles (12) such as raw potato strips (french fries). The apparatus includes a conveyor (20) for moving the articles (12) in line in a large number...	06/04/1985

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Class 356/233 - With variable light aperture size