Patent application number | Description | Published |
20120314052 | CATADIOPTRIC OPTICAL SYSTEM AND IMAGE-PICKUP APPARATUS HAVING THE SAME - A catadioptric optical system of the present invention includes a catadioptric unit configured to condense light fluxes from an object and to form an intermediate image of the object, a field lens disposed at a position where the intermediate image are formed, and a dioptric unit configured to form the intermediate image on an image surface, and when νcat denotes a smallest Abbe number in Abbe numbers of materials of the first and second optical elements configuring the catadioptric unit and νdio denotes a smallest Abbe number in Abbe numbers of materials of a plurality of dioptric optical elements configuring the dioptric unit, νdio<νcat is satisfied. | 12-13-2012 |
20120320187 | CATADIOPTRIC SYSTEM AND IMAGE PICKUP APPARATUS - The catadioptric system includes a first optical imaging system (catadioptric part) causing a light flux from an object to form an intermediate image and a second optical imaging system (dioptric part) causing the light flux from the intermediate image to form an image. In the first optical imaging system, the light flux sequentially passes a first transmissive portion, a second reflective portion, a first reflective portion and a second transmissive portion. In the second optical imaging system, consecutive four lens surfaces among plural lens surfaces placed between an aperture stop and an image surface have a negative combined refractive power, and a condition of −0.52<φ | 12-20-2012 |
20130033635 | CATADIOPTRIC SYSTEM AND IMAGE PICKUP APPARATUS - The catadioptric system includes a first imaging optical system collecting light from an object and a second imaging optical system causing the light from the first imaging optical system to form an intermediate image and to cause the light from the intermediate image to form an optical image. The first imaging optical system includes a first optical element including a first light transmissive portion and a first back reflective portion, and a second optical element including a second light transmissive portion and a second back reflective portion. The first light transmissive portion, the second back reflective portion, the first back reflective portion and the second light transmissive portion introduce the light from the object to the second imaging optical system. The second imaging optical system includes an aspheric lens having a negative refractive power on and around the optical axis and a positive refractive index in its peripheral portion. | 02-07-2013 |
20130063650 | CATADIOPTRIC SYSTEM AND IMAGE PICKUP APPARATUS EQUIPPED WITH SAME - A catadioptric unit includes, in order from an object side to an image side, a first optical element including a first transmissive unit having positive refractive power disposed in the vicinity of an optical axis and, on the object side thereof, a first reflective unit disposed at an outer circumference relative to the first transmissive unit and having a reflective surface; and a second optical element including a second transmissive unit having negative refractive power in the vicinity of the optical axis and, on the image side thereof, a second reflective unit disposed at an outer circumference relative to the second transmissive unit and having a reflective surface. Radii of curvature of object-side and image-side surfaces of the second optical element, a thickness along the optical axis and a refractive index of a material of the second optical element are set to satisfy predetermined conditions. | 03-14-2013 |
Patent application number | Description | Published |
20140036143 | IMAGE ACQUISITION APPARATUS AND IMAGE ACQUISITION SYSTEM - An image acquisition apparatus includes an imaging optical system configured to image an object, a reimaging optical system configured to reimage the object imaged by the imaging optical system, a reflecting member disposed in an optical path between the imaging optical system and the reimaging optical system, an image sensor configured to capture an image of the object reimaged by the reimaging optical system, and to output the image, a first driving unit configured to change a tilt of the reflecting member relative to an optical axis of the imaging optical system, and a correction unit configured to correct a positional deviation of the image in a rotational direction, wherein the positional deviation of the image is generated according to a change in the tilt of the reflecting member. | 02-06-2014 |
20140071262 | IMAGE ACQUISITION APPARATUS AND IMAGE ACQUISITION SYSTEM - An image acquisition apparatus includes: an imaging optical system configured to capture an image of an object; a plurality of re-imaging optical systems configured to re-image the object imaged by the imaging optical system; a reflecting optical system arranged on an optical path between the imaging optical system and the plurality of re-imaging optical systems; and a plurality of image-pickup elements configured to capture an image of the object re-imaged by the plurality of re-imaging optical systems. At least one of the plurality of image pickup elements is arranged in a plane different from a plane in which other image pickup elements are arranged; and the plurality of image-pickup elements are respectively capable of changing at least one of the positions in the direction of an optical axes of the corresponding re-imaging optical systems and the inclinations with respect to the optical axes on the basis of shape information of the object. | 03-13-2014 |
20140204195 | MICROSCOPE, OBJECTIVE OPTICAL SYSTEM, AND IMAGE ACQUISITION APPARATUS - A microscope includes an objective optical system including an imaging optical system configured to form an image of an object, a re-imaging optical system configured to re-form an image of the object image formed by the imaging optical system, and a reflection unit arranged on an optical path between the imaging optical system and the re-imaging optical system and configured to be locally changeable in at least one of a position thereof in an optical axis direction and an inclination thereof relative to an optical axis, and an image sensor configured to capture the image re-formed by the objective optical system. | 07-24-2014 |
20140254003 | REFLECTIVE OPTICAL SYSTEM AND ASTRONOMICAL OBSERVATION DEVICE USING THE SAME - A reflective optical system includes: a telescope section which includes a concave primary mirror and a concave secondary mirror; and a collimator section which includes at least one concave mirror disposed in a tilted manner with respect to an optical axis of the telescope section and at least one convex mirror disposed in a tilted manner with respect to the optical axis of the telescope section and on which converged light flux is incident, the collimator section receiving light flux from the telescope section. | 09-11-2014 |