CN2875382Y

CN2875382Y - Haidinger's brush typoscope

Info

Publication number: CN2875382Y
Application number: CN 200520013249
Authority: CN
Inventors: 沈晔; 陈偕穗; 李新富; 王士林
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-15
Filing date: 2005-07-15
Publication date: 2007-03-07
Anticipated expiration: 2015-07-15

Abstract

The utility model pertains to the technical field of optical equipments, in particular to a device to treat the amblyopia with the application of Haidinger's brush principle; the utility model comprises a blue light source, a milky white filter, a polarized light film and an ocular head, while the four components are intercooperated orderly; the primary optical axes of the milky white filter, the polarized light film and the ocular head are overlapped, which is characterized in that, the blue light source is composed of five blue light emitting diodes in parallel connection; the wavelength range of the blue light emitting diodes is between 450 and 495nm; the polarized light film is cooperated with the blue light source and an intelligent control device; the utility model has the characteristics of simple structure, small size, low energy consumption, no heat radiation, continuous work, long service life and high reliability , which is one of the ideal treatment equipments of amblyopia currently.

Description

The Haidinger brush amblyopia therapeutic equipment

Technical field

This utility model belongs to the optical devices technologies field, particularly relates to a kind of instrument of using haidinger principle treatment amblyopia.

Background technology

In the prior art, ophthalmic industry generally adopts haidinger principle treatment amblyopia both at home and abroad.It is first-class that the light path system of this quasi-instrument generally comprises incandescent light source, milky optical filter, blue color filter, polarized light piece and eyepiece.Bulb sees through the milky optical filter and forms even light during work, sees through blue color filter again and forms blue background light.Human eye is watched Hai Dingge hairbrush on the blue background light from eyepiece attentively by the polarized light piece of rotation.This brush shape effect can stimulate eyes macular area pyramidal cell, reaches therapeutic purposes.The light source of Haidinger brush treatment so far, adopt electric filament lamp or other lamps with filament light-emittings always.This quasi-tradition light source produces visible light by thermal excitation, and power consumption is big, and heating is many.Not only consumed power also need be provided with radiator structure, has therefore increased the volume of instrument, is unfavorable for instrument miniaturization.Service life of incandescent lamp is short, needs often to change.On the other hand, the used blue color filter preparing process of instrument complexity requires high to technology and technological level.The density of every batch of blue color filter is difficult to reach consistent in manufacturing process, and promptly repeatability is poor, because existing blue color filter spectrum repeatability is poor, causes the Hai Dingge hairbrush definition instability of amblyopia therapeutic equipment, influences the quality and the therapeutic effect of product.

Summary of the invention

The purpose of this utility model is the above-mentioned difficulties that will overcome prior art, and a kind of Haidinger brush amblyopia therapeutic equipment of good spectrum reproduction is provided, thereby improves the definition and the stability of Hai Dingge hairbrush.And make designs simplification, volume-diminished.Simultaneously with the control of computer stamen sheet, realize that rotating speed is adjustable and show service time, more convenient use with button.

The purpose of this utility model is to adopt such technical scheme to realize: it comprises blue-light source, milky optical filter, polarized light piece and the ocular head that matches successively; The primary optical axis of described milky optical filter, polarized light piece and ocular head coincides, and it is characterized in that described blue-light source is made of the blue LED of 5 parallel connections; The wave-length coverage of described blue LED is between 450-495nm; Described polarized light piece and blue-light source match with intelligence controlling device.

This utility model has saved blue color filter owing to adopt blue LED to replace traditional filament to make light source, and the conventional light path system is simplified.The blue LED spectroscopic pure, good spectrum reproduction can improve instrument performance and therapeutic effect, and have simple in structure, volume is little, energy consumption is low, non-thermal radiation, but continuous operation, long service life, high reliability features is one of present ideal amblyopia therapeutic equipment equipment.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is an intelligence controlling device circuit block diagram of the present utility model.

Fig. 3 is one of intelligence controlling device circuit theory diagrams of the present utility model.

Fig. 4 is two of intelligence controlling device circuit theory diagrams of the present utility model.

Fig. 5 is three of intelligence controlling device circuit theory diagrams of the present utility model.

The specific embodiment

With reference to Fig. 1: this utility model comprises blue-light source 1, milky optical filter 2, polarized light piece 3 and the ocular head 4 that matches successively; The primary optical axis 5 of described milky optical filter 2, polarized light piece 3 and ocular head 4 coincides, and described blue-light source 1 is made of the blue LED of 5 parallel connections; The wave-length coverage of described blue LED is between 450-495nm; Described polarized light piece 3 and blue-light source 1 match with intelligence controlling device 7.

The light transmission milky optical filter 2 that blue-light source 1 sends forms uniform blue background light, and human eye can be seen Hai Dingge hairbrush clearly from blue background light from the polarized light piece 3 of eyepiece 4 by rotation.Polarized light piece 3 is driven by driving-belt 6.The polarized light piece 3 and the ocular head 4 of blue-light source 1, milky optical filter 2, rotation are parallel to each other, and primary optical axis 5 overlaps.

The construction features of this amblyopia therapeutic equipment light path system is: replace the light source of traditional filament lamp as the Haidinger brush therapeutic instrument with blue-light source 1 pipe, can save the blue color filter in the similar therapeutic instrument, not only simplify the structure, and improved spectrographic quality.

Blue-light source 1 usefulness semi-conducting material blue LED is made, and not only good spectrum reproduction, and energy consumption is low, light efficiency good, heat release is few, long service life, anti-vibration, do not need lamp socket, can be in 50 ℃ of work down of ambient temperature.The light source of this amblyopia therapeutic equipment can make Hai Dingge hairbrush image more clear owing to adopt blue LED, and performance is more stable, thereby therapeutic effect is better.

During treatment, because the birefringence of the henle's layer fiber of eyes macular area and the light transmission features of polarized light, the amblyopia eye can clearly be seen the Hai Dingge hairbrush by eyepiece on the blue background plane.This brush shape effect stimulates the macular area pyramidal cell, activates optic nerve, reaches the effect of very fast healing.

With reference to Fig. 2: intelligence controlling device 7 of the present utility model comprises control circuit 8, display circuit 9, power circuit 11, blue-light source circuit 10 and drive circuit 12, described power circuit 11 joins with control circuit 8, blue-light source circuit 10, drive circuit 12, and described control circuit 8 matches with display circuit 9 and drive circuit 12 respectively.

With reference to Fig. 3: the capacitor C 3 in the described control circuit 8, C4 and the 4MHZ brilliant agitator of forming that shakes provides work clock to intelligent chip; Add/subtract two buttons by resistance R 1, receive intelligent chip 1/2 2 input pins after the R2 ground connection, under the effect of software, can discern the button duty; Chip the 13rd foot output control motor M tach signal, software kit is adjusted in output pulse width on 13 feet automatically according to adding/subtract the button active state, thus the average voltage that changes motor M two ends realizes that rotating speed is adjustable; Intelligent chip 17/18 foot output video data, 7/8 foot switch output display driver voltage, under the control of software kit, can realize two numeral demonstrations service time;

Display circuit 9 is mainly by video data latch U2, and its output lead is received 8 sections light-emitting diode display U3/U4 by resistance R 3-R9 current limliting, can show the 00-99 character under the control of control circuit 8.

With reference to Fig. 4: described blue-light source circuit 10 is formed in parallel by 5 RL series connection blue-light-emitting branch roads, promptly inserts blue LED L1-L5 by current-limiting resistance R10～R14, produces one group of blue-light source 1.

With reference to Fig. 5: described power circuit 11 comprises commutation diode V1-V4, and commutation diode V1-V4 converts 9VAC to DC voltage, and C1, C2 are filter capacitor, and voltage regulation unit U3 is transformed into 5 volts of stable straight electricity with 9 volts of unidirectional currents, for inner each element use;

Drive circuit 12 provides drive current with audion V6 to motor M by resistance R 15, capacitor C 5 and fly-wheel diode V5, and the motor M two terminal voltage peak values in the time of can eliminating switch are stablized motor speed.

Claims

1, Haidinger brush amblyopia therapeutic equipment, it comprises blue-light source, milky optical filter, polarized light piece and the ocular head that matches successively; The primary optical axis of described milky optical filter, polarized light piece and ocular head coincides, and it is characterized in that described blue-light source is made of the blue LED of 5 parallel connections; The wave-length coverage of described blue LED is between 450-495nm; Described polarized light piece and blue-light source match with intelligence controlling device.

2, Haidinger brush amblyopia therapeutic equipment according to claim 1, it is characterized in that described intelligence controlling device comprises control circuit, display circuit, power circuit, blue-light source circuit and drive circuit, described power circuit and control circuit, blue-light source circuit and drive circuit join, described control circuit matches with display circuit and drive circuit respectively, and described blue-light source circuit is formed in parallel by 5 RL series connection blue-light-emitting branch roads.