Patent application number | Description | Published |
20100149406 | Zoom lens and imaging apparatus using the same - A zoom lens comprises, in order from an object side, a first lens group with a negative refracting power; a second lens group with a positive refracting power; a third lens group with a positive refracting power; and a fourth lens group with a refracting curved surface. Upon zooming from a wide-angle end to telephoto end, at least the first lens group, second lens group, and third lens group move, and a spacing between the respective lens groups are changed. The first lens group comprises; in order from the object side to an image side, a negative lens component with a negative refracting power and a positive lens component with a positive refracting power which are arranged on an optical axis with a predetermined spacing therebetween. The total number of the lens components in the first lens group is two. The second lens group comprises at least three lenses including at least one negative lens and at least one positive lens and comprises a plurality of cemented surfaces, at least two of which are obtained by cementing two face-to-face refracting surfaces of two lenses each having different curvature on the object side surface and image side surface. | 06-17-2010 |
20100149656 | Zoom lens and image pickup apparatus using the same - A zoom lens includes:
| 06-17-2010 |
20130044361 | Endoscope Optical System - An endoscope optical system includes a negative lens that focuses light entering along an incident optical axis, a first prism that deflects and emits the light from the negative lens along a first axis substantially orthogonal to the incident optical axis, a second prism having a first reflecting surface, which deflects the light from the first prism along a second axis substantially orthogonal to the first axis and a second reflecting surface that deflects and emits the light, substantially parallel to the first axis and that faces the first prism, a third prism that deflects the light from the second prism substantially parallel to the incident optical axis, and a positive lens that focuses the light from the second prism, in this order from an object side, the negative lens and the first prism being rotatable about the first axis relative to the second prism. | 02-21-2013 |
20140114196 | MEASUREMENT PROBE, BIO-OPTICAL MEASUREMENT APPARATUS AND BIO-OPTICAL MEASUREMENT SYSTEM - A measurement probe has a fiber bundle formed by irregularly bundling a plurality of optical fibers, is detachably connected to a bio-optical measurement apparatus performing optical measurement to a biological tissue that is an object to be measured, and includes a recording unit | 04-24-2014 |
20140142391 | MEASUREMENT PROBE - A measurement probe includes an illumination fiber configured to irradiate a body tissue with illumination light, and a plurality of light receiving fibers configured to receive return light of the illumination light that is reflected and/or scattered from the body tissue. The illumination fiber and the light receiving fibers satisfy the following condition expressions: | 05-22-2014 |
20140177266 | FIBER UNIT - A fiber unit has an illumination fiber and detection fibers. The illumination fiber and the detection fiber comprise a soft portion that is bendable, a distal end hard portion provided at an end thereof and having a greater hardness than the soft portion, and a pitch conversion portion that connects the soft portion and the distal end hard portion and changes a distance between adjacent fibers at the distal end hard portion with respect to a distance between the adjacent fibers at the soft portion, by bending and extending. 1.0 degree06-26-2014 | |
20140371602 | OPTICAL MEASURING DEVICE AND FIBER BUNDLE ASSOCIATION METHOD - An optical measuring device includes: a light source unit; a measurement probe including a fiber bundle, an illumination fiber that illuminates a living tissue with a illumination light, and a plurality of light-receiving fibers that receives return light of the illumination light reflected and/or scattered at the living tissue; a detection unit that receives the return light of the illumination light detected by the plurality of respective light-receiving fibers, and performs photoelectric conversion to detect respective signal intensities; and an association unit that associates the respective signal intensities detected by the detection unit with distances from the illumination fiber to the respective light-receiving fibers on an end face of a distal end portion of the measurement probe, when light having an intensity gradient around the illumination fiber is projected to the end face of the distal end portion of the measurement probe. | 12-18-2014 |
Patent application number | Description | Published |
20090257131 | Zoom lens and image pickup apparatus equipped with same - An apparatus has a zoom lens and an image pickup element disposed on the image side of the zoom lens that converts an optical image formed by the zoom lens into an electrical signal. The zoom lens includes, in order from the object side to the image side, a negative first lens unit, a negative second lens unit, a positive third lens unit, and a negative fourth lens unit. During zooming from the wide angle end to the telephoto end, the distance between the first lens unit and the second lens unit changes, the distance between the second lens unit and the third lens unit changes, and the distance between the third lens unit and the fourth lens unit changes, the distance between the second lens unit and the third lens unit being smaller at the telephoto end than at the wide angle end. The first lens unit includes a reflecting surface that deflects the optical path, and the zoom lens satisfies the following condition (1): −10010-15-2009 | |
20100007966 | Zoom lens and image pickup apparatus equipped with same - A zoom lens includes, in order from the object side thereof, a first lens unit having a positive refracting power, which is movable during zooming, a second lens unit having a negative refracting power, which is movable during zooming, a third lens unit having a positive refracting power, which is movable during zooming, a fourth lens unit having a positive refracting power, which is movable during zooming, a fifth lens unit having a positive refracting power, which is movable or stationary during zooming. The zoom lens further includes an aperture stop that moves integrally with the third lens unit during zooming. The first lens unit is located closer to the object side at the telephoto end than at the wide angle end, and the third lens unit is located closer to the object side at the telephoto end than at the telephoto end. The first lens unit is composed of only one cemented lens made up of a negative lens element and a positive lens element arranged in order from the object side, and the third lens unit includes at least two positive lens elements. The zoom lens satisfies a certain condition. | 01-14-2010 |
20100046086 | Zoom lens and image pickup apparatus equipped with same - A zoom lens includes, in order from its object side, a first lens unit having a negative refracting power, a second lens unit having a positive refracting power, and a third lens unit having a refracting power. During zooming from the wide angle end to the telephoto end, the distance between the first lens unit and the second lens unit decreases, the distance between the second lens unit and the third lens unit changes. The first lens unit includes, in order from the object side, a first lens element, which is a negative lens element, and a second lens element, which is a positive lens element. The negative lens element and the positive lens element satisfy specific conditions. | 02-25-2010 |
20100053767 | Zoom lens and image pickup apparatus - A zoom lens includes, in order from its object side, a first lens unit having a negative refracting power, a second lens unit having a positive refracting power, a third lens unit having a negative refracting power, and a fourth lens unit having a positive refracting power. The zoom lens further includes an aperture stop disposed between the first lens unit and the third lens unit. During zooming from the wide angle end to the telephoto end, distances between the lens units change, the first lens unit moves first toward the image side and thereafter toward the object side, the second lens unit moves in such a way as to be located closer to the object side at the telephoto end than at the wide angle end, the distance between the second lens unit and the third lens unit is larger at the telephoto end than at the wide angle end, and the aperture stop moves in such a way as to be located closer to the object side at the telephoto end than at the wide angle end. The second lens unit and the third lens unit satisfy certain conditions. | 03-04-2010 |
20100091381 | Zoom lens and image pickup apparatus equipped with same - A zoom lens has a plurality of lens units including, in order from its object side to image side, a first lens unit having a negative refracting power composed of two lens elements including a biconcave negative lens and a positive lens, and a second lens unit having a positive refracting power composed of four lens elements including a positive lens and a negative lens. During zooming from the wide angle end to the telephoto end, a distance between the lens units changes, and the second lens unit moves toward the object side. The zoom lens has an aperture stop that moves integrally with the second lens during the zooming and satisfies a specific condition. | 04-15-2010 |
20120008215 | Zoom Lens and Image Pickup Apparatus Equipped with Same - A zoom lens has a plurality of lens units including, in order from its object side to image side, a first lens unit having a negative refracting power composed of two lens elements including a biconcave negative lens and a positive lens, and a second lens unit having a positive refracting power composed of four lens elements including a positive lens and a negative lens. During zooming from the wide angle end to the telephoto end, a distance between the lens units changes, and the second lens unit moves toward the object side. The zoom lens has an aperture stop that moves integrally with the second lens during the zooming and satisfies a specific condition. | 01-12-2012 |
20120133802 | IMAGING OPTICAL SYSTEM AND IMAGE-ACQUISTION APPARATUS - Provided is an imaging optical system and an image acquisition apparatus that can be suitably used in a small-diameter endoscope while having an ultra-wide angle of view. | 05-31-2012 |
20130070070 | Diffractive Optical Element and Endoscope - Provided is a diffractive optical element that is formed by laminating two optical material layers formed of different energy-cured resins; in which a relief pattern is formed at the interface between the two optical material layers; and that satisfies the following conditional expressions: | 03-21-2013 |
20130215523 | Optical System for Endoscope - An optical system for an endoscope includes a negative lens-group, an aperture diaphragm and a positive lens-group in this order from an object side, wherein the negative lens-group includes a negative first-lens and a negative second-lens in this order from the object side; and wherein the optical system meets conditional expressions (1) and (2): | 08-22-2013 |
20130242164 | Zoom Lens and Image Pickup Apparatus Equipped with Same - A zoom lens has a plurality of lens units including, in order from its object side to image side, a first lens unit having a negative refracting power composed of two lens elements including a biconcave negative lens and a positive lens, and a second lens unit having a positive refracting power composed of four lens elements including a positive lens and a negative lens. During zooming from the wide angle end to the telephoto end, a distance between the lens units changes, and the second lens unit moves toward the object side. The zoom lens has an aperture stop that moves integrally with the second lens during the zooming and satisfies a specific condition. | 09-19-2013 |
20140307329 | Endoscope Objective Optical System - To off-axis and on-axis aberrations at low cost while having a wide angle of view, an endoscope objective optical system ( | 10-16-2014 |
20150042773 | Endoscopic Objective Optical System and Imaging Apparatus - To allow placement of optical members by providing a long back focus, make aberrations less subject to manufacturing errors, and reduce variations in aberrations during focusing. An endoscopic objective optical system includes, in order from an object side, a front group with negative refractive power, a focusing lens, and a rear group with positive refractive power, wherein: the endoscopic objective optical system satisfies conditional expressions (1) to (4) below: | 02-12-2015 |
20150085376 | Endoscope Optical System - An endoscope optical system has a first lens group having positive refractive power, an aperture diaphragm, a second lens group having negative refractive power and a third lens group having positive refractive group, the second lens group moving along an optical axis to perform focusing, the first lens group having a first lens having negative refractive power and a second lens having positive refractive power, and the optical system satisfying the following conditional equation: | 03-26-2015 |
Patent application number | Description | Published |
20080304163 | Three-unit zoom lens system and image pickup apparatus having three-unit zoom lens system - A three-unit zoom lens system includes in order from an object side thereof, a first lens unit having a negative refracting power, a second lens unit having a positive refracting power, and a third lens unit having a refracting power. The first lens unit includes a biconcave negative lens component nearest to the object side, and the biconcave negative lens component is the only negative lens component in the first lens unit. The second lens unit includes a cemented lens component which includes in order from the object side thereof, at least three lenses cemented mutually on an optical axis, namely a first positive lens, a negative lens, and a second positive lens. A surface on the image side of the negative lens is a concave surface, and the negative lens has an Abbe's number smaller than the Abbe's number for the first positive lens and the second positive lens, and has a refractive index higher than a refractive index of the second positive lens. The third lens unit includes one lens component, and satisfies predetermined conditional expressions. | 12-11-2008 |
20090015941 | Three-unit zoom lens system and image pickup apparatus using the same - A three-unit zoom lens system includes in order from an object side thereof a first lens unit G | 01-15-2009 |
20090034067 | Three-unit zoom lens system and image pickup apparatus using the same - A three-unit zoom lens system includes in order from an object side thereof, a first lens unit G1 having a negative refracting power, a second lens unit G2 having a positive refracting power, a third lens unit G3 having a positive refracting power or a negative refracting power, and an aperture stop which is on an image plane side of the first lens unit G1, and on an object side of a lens surface nearest to the image side, of the second lens unit G2, and which moves integrally with the second lens unit. At the time of zooming from the wide angle end to the telephoto end, a distance between the first lens unit G1 and the second lens unit G2 is narrowed, and a distance between the second lens unit G2 and the third lens unit G3 changes. The second lens unit G2 moves toward the object side at the time of zooming from the wide angle end to the telephoto end. The second lens unit includes a positive lens made of plastic, which is disposed nearest to the object. The three-unit zoom lens system satisfies predetermined conditional expressions. | 02-05-2009 |
20090034093 | Two-unit zoom lens system and image pickup apparatus using the same - A two-unit zoom lens system includes in order from an object side thereof, a first lens unit G | 02-05-2009 |
20090040623 | Image pickup apparatus having wide angle zoom lens system - An image pickup apparatus having a wide angle zoom lens system includes a zoom lens system, and an image pickup element which is disposed at an image side of the zoom lens system. The zoom lens system includes in order from an object side thereof, a first lens unit G | 02-12-2009 |
20090091845 | Two-unit zoom lens and image pickup apparatus equipped with same - A zoom lens includes, in order from the object side thereof, a first lens unit G | 04-09-2009 |
20090097132 | Three-unit zoom lens and image pickup apparatus equipped with same - A three-unit zoom lens includes, in order from the object side, a negative first lens unit G | 04-16-2009 |