Olympus Corporation

Kazuaki Murayama

Shinichi Mihara

Koji Matsumoto

Keisuke Ichikawa

Keigo Matsuo

Kanato Adachi

Yasunobu Iga

Hideki Nagata

Hisashi Goto

Satoshi Watanabe

Kazuya Yamanaka

Kanto Miyazaki

Kengo Enomoto

Kazunari Hanano

Motoki Tabata

A phototherapy device includes: a treatment light emitter configured to emit treatment light for causing a reaction of a drug; a narrow band light emitter configured to emit narrow band light having part of wavelength band of a visible light range; an excitation light emitter configured to emit excitation light for causing excitation of the drug; a first imager configured to obtain a narrow band light image which is formed using the narrow band light applied onto an application position of the treatment light; a second imager configured to obtain a fluorescence image which is formed using the excitation light emitted onto the application position of the treatment light; and a display image generator configured to generate a superimposed image in which the narrow band light image and the fluorescence image are superimposed.

Phototherapy device, phototherapy method, and computer-readable recording medium

A light source device includes: a plurality of first semiconductor light sources; a condenser lens; and a light guide having a prismatic shape in which an incident surface is on a first side of a central axis direction of the prismatic shape and an emission surface is on a second side of the central axis direction of the prismatic shape, a positional relationship between the plurality of first semiconductor light sources, the condenser lens, and the light guide is set such that a traveling direction of the light incident on the incident surface from the first semiconductor light sources via the condenser lens is perpendicular to a reflecting surface of the light guide in a plan view as viewed in the central axis direction of the prismatic shape, the incident light being reflected on the reflecting surface in the light guide.

Light source device

An optical component includes: a lens that includes a lens surface and a tapered side surface, the tapered side surface extending from an outer circumference of the lens surface in an axial direction that intersects the lens surface and having an outer diameter progressively larger away from the lens surface. A center of the outer circumference of the lens surface is displaced, in a direction intersecting the axial direction, from a center of an outer circumference of the side surface at a position distanced from the lens surface in the axial direction. The optical component may further include a frame body in which the lens is fitted. The frame body may include a tapered engaging surface corresponding to the side surface of the lens. The lens may be fitted in the frame body and is positioned in a circumferential direction about the axial direction.

Optical component and method of manufacturing optical component

An imaging device of the present invention includes: an imaging optical system that collects light from a subject and forms a primary image of the subject; a microlens array having a plurality of microlenses () that are two-dimensionally arrayed at a position of the primary image formed by the imaging optical system or a position conjugate with the primary image; a relay optical system that relays light collected by the microlenses; a light-receiving part that receives, with a plurality of light-receiving elements, the light relayed by the relay optical system; and an adjusting unit that switches between a first layout state, in which the a plurality of light-receiving elements and back focal positions of the microlenses are conjugate with each other, and a second layout state, in which the plurality of light-receiving elements and principal-point positions of the microlenses are conjugate with each other.

Imaging device

An image acquisition device according to the present invention includes: an image-acquisition-optical-system; a microlens array having microlenses; a phase filter modulating a phase distribution to light incident on the microlenses via the image-acquisition-optical-system; a light receiving unit receiving the light focused by the microlenses by light receiving elements; an adjusting unit switching between a first arrangement state in which the light receiving elements are arranged at back focal positions of the microlenses and a second arrangement state in which the light receiving elements are arranged in vicinities of principal point positions of the microlenses; a memory storing a point image intensity distribution at the light receiving unit in each of the arrangement states; and an arithmetic operation unit generating a processed image by using the point image intensity distribution and image information at the light receiving unit in each of the arrangement states.

Image acquisition device and image acquisition system

Provided is an imaging apparatus having a plurality of light receiving parts for each one microlens in order for capturing a three-dimensional image, while being capable of obtaining a more natural image when creating a two-dimensional image. The imaging apparatus includes: a microlens array () having a plurality of microlenses () regularly aligned two-dimensionally; an imaging lens for imaging light from a subject onto the microlens array (); and a plurality of light receiving parts (L,R) disposed for each of the plurality of microlenses (). The plurality of light receiving parts (L,R) associated with each microlens () receive the light from the subject that has been imaged onto the microlens and subject the light to photoelectric conversion. The imaging lens has a pupil which is disposed as being out of conjugation with a light receiving plane of the light receiving parts (L,R).

Imaging apparatus

An apparatus has a synchronizing signal generator to which a trigger signal is input and that outputs a first synchronizing signal and a second synchronizing signal based on the trigger signal, an image pickup unit that has an image pickup surface, performs a first image picking-up based on the first synchronizing signal, and performs a second image picking-up based on the second synchronizing signal, and an image pickup element tilting unit that changes the angle of the image pickup surface relative to the optical axis during a period after the first image picking-up and before the second image picking-up.

Image pickup apparatus

A projection display device which displays an image by projecting the image on a screen includes a laser light source for emitting coherent light, a display device for forming an image to be displayed on a screen in an area illuminated by a luminous flux from the laser light source, a first diffusion plate for diffusing a luminous flux, and a second diffusion plate for diffusing a luminous flux. The first diffusion plate is provided in at least one of a conjugate position of the laser light source or the vicinity of the conjugate position in the optical path of the optical system including the laser light source through the screen. The second diffusion plate is provided in at least one of a conjugate position of the display device and the vicinity of the conjugate position.

Projection display device which displays an image by projecting the image on a screen

A first calculating section calculates an amount of camera-shake correction based on an amount of shaking of the image pickup apparatus which has been detected, when each of a first capturing and a second capturing is carried out. A second calculating section calculates at least an amount of optical tilt-displacement between the image pickup element and an object for the first capturing, which is necessary for the second capturing, and the second calculating section calculates one of an amount of shift by which some of the image pickup lenses and the interchangeable image pickup lenses are to be shifted in a predetermined direction, and an amount of change by which an angle of an image pickup surface of the image pickup element with respect to the optical axial direction is to be changed, while the first capturing and the second capturing are being carried out.

A projection display device which displays an image by projecting the image on a screen includes a laser light source() for emitting coherent light, a display devicefor forming an image to be displayed on a screenin an area illuminated by a luminous flux from the laser light source, a first diffusion platefor diffusing a luminous flux, and a second diffusion platefor diffusing a luminous flux. The first diffusion plateis provided in at least one of a conjugate position of the laser light sourceor the vicinity of the conjugate position in the optical path of the optical system including the laser light sourcethrough the screen. The second diffusion plateis provided in at least one of a conjugate position of the display deviceor the vicinity of the conjugate position. At least one of the first diffusion plateand the second diffusion platefluctuates perpendicularly to an optical axis.

Projection display device

An image forming optical system according to the present invention is characterized in that, in an image forming optical system having a positive lens group, a negative lens group, and an aperture stop, the positive lens group is disposed at an object side of the aperture stop, Here, Nd denotes a refractive index, and &#x3bd;d denotes an Abbe's number.

Image forming optical system and electronic image pickup apparatus using image forming optical system

In an image forming optical system having a positive lens group, a negative lens group, and an aperture stop, the positive lens group being disposed at an image-plane side of the aperture stop and having a cemented lens, and when a straight line indicated by Nd=&#x3b1;&#xd7;&#x3bd;d+&#x3b2; (where, &#x3b1;=&#x2212;0.017) is set, Nd and &#x3bd;d of at least one lens forming the cemented lens are included in both an area which is determined by a line when a lower limit value is in a range of a following conditional expression (1), and a line when an upper limit value is in a range of the following conditional expression (1), and in an area determined by following conditional expressions (2) and (3)1.45&#x3c;&#x3b2;&#x3c;2.15&#x2003;&#x2003;(1)1.30&#x3c;Nd&#x3c;2.20&#x2003;&#x2003;(2)3&#x3c;&#x3bd;d&#x3c;25&#x2003;&#x2003;(3) Here, Nd denotes a refractive index, and &#x3bd;d denotes an Abbe's number.

An optical system has a positive lens group, a negative lens group, and an aperture stop. The negative lens group is disposed at an object side of the aperture stop and has a cemented lens, and in a rectangular coordinate system in which a horizontal axis is Nd and a vertical axis is &#x3bd;d, when a straight line indicated by Nd=&#x3b1;&#xd7;&#x3bd;d+&#x3b2; where &#x3b1;=&#x2212;0.017 is set, Nd and &#x3bd;d of at least one lens forming the cemented lens are included in both an area determined by a line when a lower limit value is in a range of expression (1) and a line when an upper limit value is in a range of the expression (1), and an area determined by expressions (2) and (3): 1.45&#x3c;&#x3b2;&#x3c;2.15 (1); 1.30&#x3c;Nd&#x3c;2.20 (2); and 3&#x3c;&#x3bd;d&#x3c;12 (3); where Nd denotes a refractive index, and &#x3bd;d denotes an Abbe's number.

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Tokyo, Japan

Kazuaki Murayama