摘要:
An optical image measurement device comprises: an interference-light generator configured to generate an interference light by splitting a low-coherence light into a signal light and a reference light and superimposing the signal light having passed through an eye and the reference light having passed through a reference object; a detector configured to detect the generated interference light; a calculator configured to obtain intensity distribution of the interference light in the eye, based on a result of the detection by the detector; a determining part configured to determine a projection position of the signal light to the eye, based on the obtained intensity distribution; and an image forming part configured to form an image of the eye, based on a result of detection of a new interference light based on a new signal light projected toward the determined projection position and a new reference light having passed through the reference object.
摘要:
An optical image measurement device comprises: an interference-light generator configured to generate an interference light by splitting a low-coherence light into a signal light and a reference light and superimposing the signal light having passed through an eye and the reference light having passed through a reference object; a detector configured to detect the generated interference light; a calculator configured to obtain intensity distribution of the interference light in the eye, based on a result of the detection by the detector; a determining part configured to determine a projection position of the signal light to the eye, based on the obtained intensity distribution; and an image forming part configured to form an image of the eye, based on a result of detection of a new interference light based on a new signal light projected toward the determined projection position and a new reference light having passed through the reference object.
摘要:
Technology is provided, capable of easily acquiring high precision tomographic images of the desired observation site of the fundus oculi. A fundus observation device 1 is provided, comprising: an interferometer that generates interference light LC from a reference light LR via a reference mirror 174 and a signal light LS that reaches the fundus oculi Ef after low-coherence light L0 is split into that signal light LS and reference light LR; a CCD 184 that detects interference light LC; an image forming part 220 that forms image data G of a tomographic image based on detection results of the CCD 184; a display part 240A; an operation part 240B for specifying an observation mode (observation site); and a reference mirror drive mechanism 243. The image data G of a tomographic image includes image data of a normal image G (Re) and an inverse image G (Im). A controlling part 210 that displays the selected normal image G (Re) or inverse image G (Im) on the display part 240A along with moving the reference mirror 174 by controlling the reference mirror drive mechanism 243 based on the selected observation mode.
摘要:
An optical image measurement device is configured to form a tomographic image at each of a plurality of cross sections of a measurement object, and the optical image measurement device comprises: an image processor configured to execute an arithmetic operation based on a tomographic image at one cross section of the plurality of cross sections and another tomographic image at each of one or more cross sections other than the one cross section, thereby forming a new tomographic image at the one cross section.
摘要:
First image forming part forms a two-dimensional surface image of a fundus oculi of an eye based on optically obtained data. Second image forming part forms tomographic images of fundus oculi based on data obtained by optically scanning a region of the surface of fundus oculi corresponding to at least part of two-dimensional image. Accumulated image generating part generates an accumulated image by accumulating the formed tomographic images in a depth-wise direction. Extracting part extracts first vascular territory corresponding to a fundus oculi vessel from two-dimensional image formed by first image forming part, and also extracts second vascular territory corresponding to a fundus oculi vessel from accumulated image generated by accumulated image generating part. Specification part specifies a position of a vascular cross sectional region corresponding to a cross section of a fundus oculi vessel in the tomographic image based on extracted first vascular territory and extracted second vascular territory.
摘要:
An optical image measuring device which can form a highly reliable image even if an object moves during scanning of a signal light is provided. An optical image forming device 1 comprises: an interferometer that splits a low coherence light L0 into a signal light LS and a reference light LR and generates an interference light LC by overlaying the signal light LS reflected by a fundus oculi with the reference light LR reflected by a reference mirror 14; a CCD 34 which receives the interference light LC and outputs a detection signal; Galvanometer mirrors 22 and 23 to scan the signal light LS in a main scanning direction and a sub-scanning direction; and a computer 40 forming tomographic images G1 to Gm along the main scanning direction at different positions of the sub-scanning direction. The Galvanometer mirrors 22 and 23 scan the signal light LS in a given direction crossing the main scanning direction, and the computer 40 forms a tomographic image for correction GR along the given direction to correct displacement of each topographic image Gi based on the tomographic image for correction GR.
摘要:
Image forming part 220 forms a 2-dimensional image of the surface of the fundus oculi Ef (fundus oculi image) and a tomographic image of the fundus oculi Ef. The fundus oculi image 212a and the tomographic image Ga captured at the first examination time and the fundus oculi image 212b and the tomographic image Gb captured at the second examination time are stored in an image storage part 212. Position information generating part 214 generates the position information 213a indicating the position of the tomographic image Ga in the fundus oculi image 212a and the position information 213b indicating the position of the tomographic image Gb in the fundus oculi image 212b. The generated position information 213a and 213b are stored in information storage part 213. Image processing part 230 adjusts the position between the tomographic images Ga and Gb based on such position information 213a and 213b.
摘要:
A fundus oculi observation device acts as an optical image measurement device capable of measuring an OCT image such as a tomographic image of a fundus oculi, or the like, and is configured so as to calculate the signal level of the formed OCT image, determine whether the signal level exceeds a threshold value, and change the position of a reference mirror so that the signal level is determined to exceed the threshold value.
摘要:
A fundus oculi observation device comprises: a first image forming part configured to optically acquire data and form a 2-dimensional image of a surface of a fundus oculi of an eye based on the data; a second image forming part configured to optically acquire data and form a tomographic image of the fundus oculi based on the data; a display; a controller configured to cause the display to display the 2-dimensional image and the tomographic image side by side; and a designating part configured to designate a partial region of the displayed tomographic image, wherein the controller finds a position within the 2-dimensional image corresponding to the designated partial region, and displays designated-position information in a superimposed state on the position within the 2-dimensional image.
摘要:
An eye movement measuring apparatus comprises: an image forming part configured to obtain data optically to form a fundus oculi image of an eye based on the obtained data; and an image analysis part configured to analyze the formed fundus oculi image to determine eye movement of the eye.