摘要:
Arranged within a measuring-light generating unit of an endoscope apparatus for three dimensional measurement, according to the invention, are measuring means, a lamp for outgoing a normal illuminating light, and a laser for outgoing a measuring light. Connected to the measuring means is a signal line which is connected to a CCD. Further, an illuminating light outgone from the lamp is condensed by a condenser lens, and is incident upon an incident end surface of a light guide. Furthermore, the measuring light outgone from the laser is condensed by the condensing lens, and is incident upon the incident end surface of the image guide. Moreover, the incident end of the image guide is connected to scanning means formed by a piezo-electric element, a speaker (voice coil) or the like through a connecting element. The scanning means is operated whereby the incident end of the image guide is reciprocally moved in a direction perpendicular to an optical axis of the measuring light. The measuring light is a light having extension or spreading. However, a flux of light of the measuring light is extremely thin, and a spot light having minimum resolution that is a single glass fiber forming the image guide is projected onto the subject.
摘要:
This endoscope image data compressing apparatus comprises a plurality of image compressing apparatus not equivalent to each other for compressing input endoscope image data and outputting the compressed data and a selecting apparatus for selecting the compressed data output from at least one of the image compressing apparatus. The selecting apparatus selects in response to the kind of the endoscope, characteristic of the image, picture quality of the compressed image, recording time intervals and others.
摘要:
An endoscope provided with a stop comprising an annular electrochromic element arranged in an objective lens unit so that the transmittance of the stop is varied in accordance with the amount of light from an object to be observed which has been measured, in order to prevent brightness in a field of view from being rapidly changed when the distance from the distal end portion of the endoscope to the object to be observed is varied.
摘要:
An endoscopic photographing apparatus has a TV camera with a CCD image sensor which is mounted on an eyepiece section of an endoscope, a light flash source for supplying a light flash as photographing light to the endoscope, and an observation light source for supplying observation light. The light flash source is turned on in synchronism with a release signal and a transfer gate pulse for the video signal, at the time of still image photographing. The photographic field of view of the TV camera is darkened for at least one-field scanning period, before the light flash source is turned on.
摘要:
The camera arranged at the eyepiece section of an endoscope has a photometric circuit for generating observation and photographing light control signals selectively to control the brightness of observation light and the amount of photographing light. The light supply unit has observation and photographing light control circuits, said observation light control circuit serving to control the amount of current supplied to the observation light source correspondingly to the observation light signal applied through the photometric circuit in the camera and said photographing light circuit serving to control the light irradiation time of the photographing light source or electronic flash tube correspondingly to the photographing light control signal.
摘要:
This endoscope system is provided with an endoscope and an image receiving apparatus to be fitted to the eyepiece part of this endoscope. The endoscope has an elongate insertable part, an objective optical system provided in the tip part of the insertable part, an eyepiece part provided on the rear end side of the insertable part and an image guide consisting of a fiber bundle transmitting the image formed by the objective optical system to the eyepiece part. The image receiving apparatus has an image receiving part of many pixels on which the image from the eyepiece part is formed. Further, the endoscope system is provided with a vibrating apparatus relatively vibrating the image formed on the image receiving part and the image receiving part. The image receiving apparatus is a television camera, co-viewing apparatus or electronic still camera.
摘要:
Data transmission/reception devices are provided in endoscope, photographic attachment and light source unit. The data transmission/reception devices are connected with one another by two-way data transmission lines.
摘要:
A light flash control apparatus is used for an endoscope in which a solid-state image sensor is employed. A image signal derived from the solid-state image sensor during the illumination by a halogen lamp is also utilized as a photo-metric signal. An adequate quantity of flashlight for the image sensor is calculated in advance based upon the photo-metric signal. The calculated exposure time i.e., the desirable quantity of flashlight is stored in an integration circuit. After the given exposure time passes since the flash tube is ignited, it is forcibly turned-off by a turn-off thyristor.
摘要:
An endoscope for medical treatment which comprises a specific distal end portion which includes a thermal energy generating means for providing thermal energy to the outside from the distal end portion; a temperature detecting means mounted on the distal end portion which detects the temperature of a body part to be heated by the thermal energy and provides a detected signal corresponding to the temperature of the heated body part; and a control means for feedback controlling the thermal energy generating means in response to the detected signal so as to maintain the temperature of the heated body part at a predetermined level.
摘要:
An electronic flash apparatus comprises a flash lamp and a semiconductor switching element which are connected in series across a main capacitor, and a flash control circuit which measures light reflected from an object to be photographed illuminated by flash light produced by the flash lamp, and produces a control signal to render the semiconductor switching element nonconductive. The flash control circuit includes a photoelectric converting circuit for converting the reflected light into a voltage signal, an integrator for integrating the voltage signal, and a comparator for comparing the output voltage from the integrator with a reference voltage. To obtain a proper flash exposure a compensation signal generating circuit is provided which is responsive to the initiation of flashing of the flash lamp to produce a compensation signal having a desired waveshape. The compensation signal acts on the flash control circuit to control the generation timing of the control signal. The flash light produced by the flash lamp after the switching element has been rendered nonconductive is positively used for a proper exposure.