摘要:
The invention relates to a movably manoeuvrable device (1000) with a mobile device head (100), in particular a medical mobile device head (100) with a distal end for arranging relative to a body, in particular for arranging in or on the body, with at least one mobile device head (100) designed for manual or automatic guidance, a guide mechanism (400) designed for navigation, an image processing unit (430), which creates a map (470) of the environment using the image data and a navigation unit, which by means of the image data and an image data flow can indicate at least one position (480) of the device head (100) using the map.
摘要:
The diameter of an endoscope insertion portion is reduced, and a wide field angle of an endoscope insertion portion is obtained. An endoscope objective optical system includes, from an object side, a first lens formed of a plano-concave lens having a concave surface facing an image side, a second lens formed of a plano-concave lens having a concave surface facing the object side, an aperture stop, and a third lens formed of a plano-convex lens having a plane surface facing the object side, and satisfies 0.7 ≤ fab / f ≤ 0.9 1.7 ≤ fe / fab ≤ 2 2 ≤ fb / fa ≤ 4 where f: focal length of the entire system; fa: focal length of the first lens; fb: focal length of the second lens; fe: represents focal length of the third lens; fab: ombined focal length from the first lens to the second lens.
摘要:
An automatic exposure control device includes an image acquisition section that acquires an image that has been captured by an imaging optical system that receives reflected light, and includes an image of an object, the reflected light being light that has been applied to the object, and reflected by the object, an angle-of-view information acquisition section (310) that acquires angle-of-view information that indicates an angle of view of the imaging optical system when the image has been captured, and an automatic exposure control section (320) that performs an automatic exposure control process based on the acquired angle-of-view information.
摘要:
An endoscope includes: an objective optical section including a plurality of optical lenses, and a first barrel that houses the optical lenses, the optical lenses being integrally and fixedly provided therein; an image pickup optical section including a solid image pickup device, an optical member that forms an optical image passed through the objective optical section on an image pickup surface of the solid image pickup device, and a second barrel that houses the optical member and the solid image pickup device, the optical member and the solid image pickup device being integrally and fixedly provided therein, the second barrel being arranged so as to fit with the first barrel, and being fixed to the first barrel in an integrated manner via bonding after adjustment in position in an axial direction relative to the first barrel; a holding member formed of material having a linear expansion coefficient lower than a linear expansion coefficient of the first barrel and a linear expansion coefficient of the second barrel, the holding member being fixed to a predetermined position on an outer surface of the first barrel and a predetermined position on an outer surface of the second barrel via bonding; a first adhesive that bonds the first barrel and the second barrel to each other; and a second adhesive having a bonding strength higher than that of the first adhesive, the second adhesive bonding the holding member to the outer surface of the first barrel and the outer surface of the second barrel.
摘要:
Provided is an endoscope objective optical system that has a relatively narrow angle, a small outer diameter, and a short overall length and that allows simultaneous correction for field curvature and comatic aberration. An endoscope objective optical system (1) includes, in order from an object side, a first lens (2) composed of a negative single lens, a second lens (3) composed of a positive single lens, an aperture stop (4), a third lens (5) composed of a positive single lens, and a fourth lens (6) composed of a positive combined lens. The endoscope objective optical system (1) satisfies the following conditions: (1) 0.3 n1, and (4) 0.6 wherein Df is the distance from a surface of the first lens facing the object side to the aperture stop, f is the focal length of the entire system, n1 is the refractive index of the first lens (d-line), n2 is the refractive index of the second lens (d-line), and IH is the maximum image height of the entire system.
摘要:
There is provided an endoscope apparatus capable of stably and precisely measuring a distance to an object by suppressing variations in measured values of the distance to the object depending on the presence or absence of pigment dispersion or the like and capable of enabling observations based on clear and high quality images. The endoscope apparatus (1) includes an optical system (7) that condenses light from an object and simultaneously forms two optical images having the same characteristics with difference only in focal point; an imaging element (8, 9) that captures the two optical images formed by the optical system (7) and acquires two images; and a calculation unit that obtains distance information corresponding to a distance to the object based on a contrast ratio of the two images in a range in which the two images acquired by the imaging element (8, 9) have a common contrast.