Visible fundus examination tester

[0012] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to make a clearer and clearer definition of the protection scope of the present invention.

[0013] See figure 1 The embodiment of the present invention includes: a visual fundus inspection instrument, including: a fundus inspection lens 1 and a body 2, the body 2 is an L-shaped structure, the body 2 is provided with a battery 20 and a control circuit board 21, the body 2 is provided with a power switch 22, a shutter button 23, an infrared light brightness adjustment button 24, and a focusing button 25. The rear of the body 2 is provided with a data transmission interface 26, and the head of the body 2 is provided with an infrared receiving digital camera 27 and the first circuit control circuit port 28. The control circuit board 21 is electrically connected to the battery 20, the power switch 22, the shutter button 23, the infrared light brightness adjustment button 24, and the focus button 25, respectively.

[0014] Furthermore, the fundus examination lens 1 includes an aspherical eye lens 10, an illuminating optical focusing group 11, and a microscopic imaging objective lens group 12. A second circuit control line port 13 is provided behind the microscopic imaging objective lens group 12. The illumination optics focusing group 11 includes a reflector 110, a flash, an infrared light transmitter 111, a focusing lens group 112, and a focusing motor 113; the fundus inspection lens 1 controls the line port 28 and the second circuit control line port 13 through the first circuit The docking is connected with the digital camera 27.

[0015] Furthermore, an illuminating optical focusing group is arranged behind the aspherical eye lens, the microscopic imaging objective lens group is arranged behind the illuminating optical focusing group, and the reflecting mirror is located at the lower left of the focusing lens group, The flash lamp and the infrared light emitter are located directly below the reflector, and the focusing motor is located above the focusing lens group.

[0016] See figure 2 , The working principle of the visual fundus inspection instrument of the present invention: the power switch 22 is activated, the battery 20 supplies power to the control circuit board 21, the flashlight of the fundus inspection lens 1, and the infrared light emitter 111 emits infrared rays which are reflected by the mirror 110 to the aspherical eye The objective lens 10 is then projected into the fundus of the eyeball 3 through the aspherical lens 10; the infrared light reflected by the fundus is imaged by the aspherical lens 10, and then the focus is reduced or enlarged by the focusing lens group 112, and then The digital camera 27 is imaged by the microscope imaging objective lens group 12, and by observing the fundus imaging on the screen of the digital camera 27, adjust the focus button 25 on the fuselage 2 to adjust the focus to adjust the fundus imaging to the clearest, and then activate the shutter button 23, The flash and the infrared light emitter 111 emit extremely short-lived strong light. Through the above-mentioned optical path imaging, the eye hole is too late to shrink, and the photographing has been completed. After the photographing is completed, the fundus imaging picture can be stored in the digital camera 27 or through the data transmission interface 26 Print out the picture.

[0017] The above are only the embodiments of the present invention, and do not limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the description and drawings of the present invention, or directly or indirectly applied to other related technologies In the same way, all fields are included in the scope of patent protection of the present invention.