Vibration amplitude type transmission grating three-dimensional endoscope
A technology of transmission grating and amplitude type, applied in the field of 3D endoscopy, can solve the problems of missing 3D surface shape distribution information, inconvenience, loss of 3D surface shape distribution information, doctor diagnosis, etc.
Inactive Publication Date: 2008-12-10
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology
Illumination systems mostly use unstructured light sources for illumination. The light source itself does not contain any coding information, and can only obtain the plane two-dimensional information of the measured tissue, while losing the three-dimensional surface shape distribution information including the relative depth and lateral size of the object. This three-dimensional The loss of surface shape distribution information brings inconvenience to doctors' diagnosis
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[0017] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.
[0018] see first figure 1 , figure 1 It is a structural block diagram of a specific embodiment of the amplitude-type transmission grating three-dimensional endoscope of the present invention. As can be seen from the figure, the amplitude-type transmission grating three-dimensional endoscope of the present invention is composed of a light-emitting diode 5, a power supply 10, an amplitude-type transmission grating 4, illumination microlens groups 2, 3, imaging microlens groups 8, 9, and a miniature array CCD11 , data acquisition card 16 and computer 17 constitute, in a front-end housing 12, from back to the front-end by successively described light-emitting diode 5, amplitude type transmission grating 4, illuminating micro-lens group 2, 3 constitute illumination optical path...
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Abstract
The invention relates to an amplitude type transmission grating three-dimensional endoscope which is composed of a luminous diode, a power supply, an amplitude type transmission grating, an illuminating micro-lens group, an imaging micro-lens group, a micro area array CCD, a data acquisition card and a computer; wherein, an illuminating light path is formed by the luminous diode, the amplitude type transmission grating and the illuminating micro-lens group in sequence from the rear end to the front end in a front casing; an imaging light path is formed by the imaging micro-lens group and the micro area array CCD from the front end to the rear end in the front casing of the endoscope; the luminous diode is connected with the power supply through leads; the output terminal of the micro area array CCD is connected with the data acquisition card through the CCD drive wires, and the data acquisition card is connected with the computer. The invention can acquire information including the three-dimensional surface information of a target to be measured.
Description
technical field [0001] The invention relates to a three-dimensional endoscope, in particular to an amplitude type transmission grating three-dimensional endoscope. Background technique [0002] Endoscope is a kind of precise optical-mechanical-electrical combination instrument, which is widely used in industrial inspection, industrial micro-processing, medical diagnosis, minimally invasive surgery and other fields. From the original rigid tube endoscope to the current fiber optic endoscope and electronic endoscope, the technical development of endoscope is becoming more and more mature. [0003] The current common endoscope systems, including fiber endoscopes and electronic endoscopes, are structurally divided into lighting systems, imaging systems and image acquisition systems. Illumination systems mostly use unstructured light sources for illumination. The light source itself does not contain any coding information, and can only obtain the plane two-dimensional informatio...
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Login to View More IPC IPC(8): G02B23/24G02B23/00G02B3/00G02B1/02
Inventor 周常河谢金张军
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI