Automatic comprehensive optometry unit
An automatic synthesis and optometry technology, which is applied in medical science, eye testing equipment, diagnosis, etc., can solve the problems of lens and cylinder lens detection accuracy and poor effect, and achieve convenient use, reasonable design, and accurate test effect Effect
Active Publication Date: 2012-10-03
NINGBO MING SING OPTICAL R & D
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Problems solved by technology
[0003] In order to overcome the above disadvantages, the present invention provides the field with an automatic comprehensive optometry instrument controlled by a computer and subjective optometry method, so as to solve the technical problems of poor detection accuracy and effect of lenses and cylinders in existing similar products.
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[0041] Now in conjunction with the figure, use two 16 subdivided stepping motors to control two lens wheels with Risley prisms and two 16 subdivided stepping motors to control two lenses with oblique cross cylinders and Jackson cross cylinders. The other lens wheels and the four lens wheels are provided with other well-known lenses, prisms, cylindrical lenses and other lenses as examples. The structure and assembly of the present invention will be further described. Such as figure 1 As shown, the optometry combination table of the optometer is provided with four parts: lung head 1, operation panel 2, power box 3, and projector 4. The four parts are respectively composed of an external body and an internal integrated circuit. Its internal integrated circuit such as figure 2 As shown, the lung head main board 5 of the lung head is connected to the left lung head drive board 6 and the right lung head drive board 7 respectively. The left and right lung head drive boards are provide...
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The invention relates to a subjective automatic comprehensive optometry unit, which is designed for solving the technical problem that the structures of the stepping motor subdivision control machine and the integrated circuit in the traditional products of the same type are not good enough. The key point of the optometry unit is that: a lens wheel of a lung head component of the optometry unit is provided with a plurality of Risley prisms, obliquely-crossed cylinder lenses and Jackson crossed cylinder lenses and a plurality of subdivision stepping motors, wherein the Risley prisms, the obliquely-crossed cylinder lenses and the Jackson crossed cylinder lenses are rotated and combined through the subdivision stepping motors which are controlled by an operation panel. The lung head component is provided with four 16-subdivision subdivision stepping motors. An internal integrated circuit of a lung head driving plate controls the 16-subdivision driving mode of the lung head driving plate mainly by using a TA8435H chip. The subjective automatic comprehensive optometry unit is reasonably designed and convenient to use, ensures accurate test effect and is applicable to the vision detection of nearsighted and farsighted patients.
Description
Technical field [0001] The invention relates to a computer-controlled subjective automatic comprehensive refractor, which is an automatic comprehensive refractor. Background technique [0002] The principle of optometry is to check the convergence of light after entering the eyeball, and to measure the degree of vergence difference between the examined eye and the emmetropic eye based on the state of the emmetropic eye. As one of the optometry instruments, the comprehensive refractometer is manufactured according to the above-mentioned principle of optometry. The lens or cylindrical lens is installed in the rotating wheel system. Through a simple knob, the lens can be changed more effectively and quickly to achieve the purpose of optometry. ; At the same time, the lenses in the refractor are in a closed state and are not easy to stain. Comprehensive refractor is generally composed of three parts: vision tester, projector and optometry combination table. The comprehensive refract...
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IPC IPC(8): A61B3/02
Inventor 黄涨国梅建国顾勰民
Owner NINGBO MING SING OPTICAL R & D