Niko Corporation Patent applications |
Patent application number | Title | Published |
20130201564 | LENS SYSTEM, OPTICAL DEVICE WITH LENS SYSTEM, AND METHOD OF MANUFACTURING LENS SYSTEM - A lens system comprises, on a side closest to an object, a first lens component having a positive refractive power and a second lens component having a positive refractive power in order from the object; and on a side closest to an image, a cemented lens constructed by cementing together a positive lens and a negative lens in order from the object; wherein the lens system satisfies the following conditional expressions: | 08-08-2013 |
20120015306 | ILLUMINATION OPTICAL SYSTEM, EXPOSURE APPARATUS, AND DEVICE MANUFACTURING METHOD - [Problem] It is to provide an illumination optical system, exposure apparatus and device manufacturing method allowing adjustment of the light intensity distribution on the illumination target surface. | 01-19-2012 |
20110310474 | MICROSCOPE SYSTEM AND OBSERVATION CONTROL METHOD - An electric zoom consecutively changes a magnification for a sample within a magnification changeable range. An electric revolver switches an objective lens placed in an observation optical path to intermittently change the magnification for the sample. A control section calculates a total magnification based on the magnification provided by the electric zoom and the magnification of the objective lens currently placed in the observation optical path. The control section controls the electric revolver such that the objective lens placed in the observation optical path is switched when the magnification changed in response to the operation of causing the magnification of the electric zoom to be changed falls outside the magnification changeable range of the electric zoom. | 12-22-2011 |
20090185798 | FOCUS DETECTION DEVICE, FOCUS DETECTION METHOD, AND CAMERA - A focus detection device includes a focus detector, an object detector, a selector, a divider, and a controller. The focus detector is configured to detect a plurality of focus adjusting states at focus detecting positions in an image plane of an optical system. The object detector is configured to detect image information corresponding to a specified object in an image of the optical system. The selector is configured to select focus adjusting states among the plurality of focus adjusting states based on the image information detected by the object detector. The divider is configured to find variation in the selected focus adjusting states and configured to divide the selected focus adjusting states into a plurality of groups based on the variation. The controller is configured to find a final focus adjusting state based on a pre-final focus adjusting state in a group selected from the plurality of groups. | 07-23-2009 |