CN101493573A

CN101493573A - Optical amblyopia visual aid

Info

Publication number: CN101493573A
Application number: CNA2009100959309A
Authority: CN
Inventors: 徐军民
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-02-19
Filing date: 2009-02-19
Publication date: 2009-07-29

Abstract

The invention belongs to the technical field of optical instruments and discloses an optical amblyopia visual acuity aid; the amblyopia visual acuity aid comprises a drawtube group, an object lens group and an ocular group which are respectively arranged at two ends of the drawtube group, and a focusing mechanism which is used for adjusting the focal distance; a steering system used for positive image is arranged between the object lens group and the ocular group; the focal point of the object lens group is arranged between the ocular group and the ocular group focal point; and the focal point of the ocular group is arranged between the object lens group and the object lens group focal point. Compared with the prior art, the amblyopia visual acuity aid greatly improves the adjustment quantity of envisaging degree, can realize the use in close distance, leads the articles 0.5-3 meters away from the amblyopia visual acuity aid to be imaged in the system by the optical system of the whole product and achieves the object of helping the amblyopia group to clearly see the close articles.

Description

A kind of optical amblyopia visual aid

Technical field

The present invention relates to the technical field of optical instrument, relate in particular to a kind of optical amblyopia visual aid.

Background technology

At present, optics helps the field of looking based on telescope, sees distant objects clearly to help people, and telescope is divided into refracting telescope, reflecting telescope and catadioptric telescope.Refracting telescope is made the telescope of object lens with lens, and it is divided into two types: the Galileo telescope that is called of being made eyepiece by concavees lens; Make the Kepler telescope that is called of eyepiece by convex lens.Reflecting telescope is made the telescope of object lens with concave mirror, can be divided into Newtonian telescope, Cassegrain telescope, Gregorian telescope, coude telescope several types.Catadioptric telescope comprises Schmidt telescope and Maksutov telescope and their derivative type by the telescope that refracting element and reflecting element combine.Because the image quality of refracting telescope is better than reflecting telescope, the visual field is big, and is easy to use, is easy to safeguard that volume is little, so its application is comparatively extensive.As application number is that 200720060305 Chinese utility model patent discloses a kind of novel telescope, and it comprises: shank is installed on optical mirror slip, optical prism and zoom lens set on the shank successively; Described zoom lens set is the optics of liquids lens combination of regulating zoom by change in voltage.The optical lens group that replaces traditional mechanical adjustment with the optics of liquids lens combination, because the optics of liquids lens combination is to utilize the inner liquid distortion of variation control of voltage, carry out focus adjustment, complex structure, bulky traditional optical zoom system, pancreatic system have been removed from, reduce whole telescopical volume, be easy to carry; And the production process of liquid lens is also simple, is beneficial to reduce cost.The design concept of above-mentioned optical telescope: target is the infinite distance distance, and design concept is that the focus of objective lens must overlap with the focus of eyepiece group, and the optical system of entire product just can reach infinite remote object image-forming in native system.

Above-mentioned telescope all is to help people to see distant objects clearly, but suffers from high myopia, astigmatism, antimetropia and stravismus, and the children that congenital cataract is ill because the vision system of eyes is in the state of developmental lag, thereby form amblyopia.The common in addition age, average nine philtrums had a people can produce amblyopia to 65 years old old man, and the age has arrived octogenarian old man, promptly has a people to produce amblyopia in every four-player.These crowds can not see object nearby clearly, have had a strong impact on this type of crowd's normal life.For this reason, to develop a kind of typoscope that can help them to see near objects clearly just necessary for above-mentioned amblyopia crowd.

Summary of the invention

Technical matters to be solved by this invention is the present situation at prior art, provides a kind of simple and reasonable, is easy to carry, and can help the amblyopia crowd to see the optical amblyopia visual aid of near objects clearly.

The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of optical amblyopia visual aid, comprise the lens barrel group, be arranged at the objective lens and the eyepiece group at lens barrel group two ends respectively, the focus adjusting mechanism that is used to focus, be provided with the steering that is used for erect image between objective lens and the eyepiece group, the focus of objective lens drops between eyepiece group and the eyepiece group focus, and the focus of eyepiece group drops between objective lens and the objective lens focus.

Further technical measures also comprise:

Above-mentioned steering is the prism group, and between the focus of objective lens and objective lens, it comprises a roof prism and one and half suitable pentaprism of this roof prism, is provided with partition between roof prism and half pentaprism.

In the above-mentioned lens barrel group prism table is installed, the prism group is fixedly mounted on the prism table.

Above-mentioned eyepiece group comprises eyepiece stalk, with the eyepiece mount that eyepiece stalk is nested and cooperates, is positioned at first eyepiece, second eyepiece, the 3rd eyepiece and the 4th eyepiece of eyepiece mount successively; One side and second eyepiece of first eyepiece are glued together, and the opposite side of first eyepiece is provided with the eyepiece trim ring, and it is isolated to pass through the eyepiece trim ring between second eyepiece and the 3rd eyepiece and between the 3rd eyepiece and the 4th eyepiece respectively.

Above-mentioned objective lens comprises the objective tube that is positioned at lens barrel, is arranged at first object lens and second object lens in the objective tube, and first object lens and second object lens are glued together, and the inboard of second object lens also is provided with the object lens trim ring.

In order to obtain better technique effect,

Wherein a kind of scheme: above-mentioned lens barrel group is the monotubular structure.

Another program is: above-mentioned lens barrel group is a double-barrel structure, comprises left lens barrel and right lens-barrel, is provided with the identical objective lens of structure, eyepiece group and steering in left lens barrel and the right lens-barrel; Left side lens barrel and right lens-barrel link together through bindiny mechanism.

Compared with prior art, owing to the present invention includes the lens barrel group, be arranged at the objective lens and the eyepiece group at lens barrel group two ends respectively, the focus adjusting mechanism that is used to focus, be provided with the steering that is used for erect image between objective lens and the eyepiece group, the focus of objective lens drops between eyepiece group and the eyepiece group focus, and the focus of eyepiece group drops between objective lens and the objective lens focus.The regulated quantity that has improved positive diopter greatly can realize closely using, make apart from 0.5-3 rice of the present invention and pass through the optical system imaging of entire product in native system with interior object, can help amblyopia crowd safety to go across the road, read the label explanation in food and the drug packaging, distinguish people's face, the thing in the refrigerator.Importantly can allow the child and the elderly population of amblyopia read, learn, exempt accompanying and attending to of household, can live as the normal person.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention 1;

Fig. 2 is the STRUCTURE DECOMPOSITION synoptic diagram of the embodiment of the invention 1;

Fig. 3 is the structural representation of the embodiment of the invention 2;

Fig. 4 is the STRUCTURE DECOMPOSITION synoptic diagram of the embodiment of the invention 2.

Embodiment

Below in conjunction with embodiment the present invention is described in further detail:

As shown in Figures 1 to 4, figure grade explanation: lens barrel group 1, left lens barrel 11, right lens-barrel 12, objective lens 2, objective tube 21, the first object lens 22, the second object lens 23, object lens trim ring 24, eyepiece group 3, eyepiece stalk 31, eyepiece mount 32, first eyepiece, 33, the second eyepieces, 34, the three eyepieces, 35, the four eyepieces 36, eyepiece trim ring 37, focus adjusting mechanism 4, prism group 5, roof prism 51, half pentaprism 52, partition 53, prism table 54, bindiny mechanism 6.

Embodiment 1

As depicted in figs. 1 and 2, the present invention is straight tube double-barrel structure, comprises left lens barrel 11 and right lens-barrel 12, is provided with the identical objective lens of structure (2), eyepiece group (3) and steering in left lens barrel (11) and the right lens-barrel (12); Left side lens barrel 11 and right lens-barrel 12 link together through bindiny mechanism 6, and optical system adopts Kepler's telescopic system.Adopt double-barrel structure, more meet the use habit of human eye in use.A kind of optical amblyopia visual aid of the present invention, comprise the lens barrel group of forming by left lens barrel 11 and right lens-barrel 12 1, be arranged at the objective lens 2 and the eyepiece group 3 at lens barrel group 1 two ends respectively, the focus adjusting mechanism 4 that is used to focus, be provided with the steering that is used for erect image between objective lens 2 and the eyepiece group 3, the focus of objective lens 2 drops between eyepiece group 3 and eyepiece group 3 focuses, and the focus of eyepiece group 3 drops between objective lens 2 and objective lens 2 focuses.Present embodiment is imaged on target on the object lens image planes by object lens, by prism group 5 image rotations and eyepiece group 3, becomes erect image in the position of eye point, and human eye is observed at the place, position of eye point, is the erect image through amplifying; Again since the regulated quantity that has improved positive diopter greatly can realize closely using, make apart from 0.5-3 rice of the present invention with the optical system imaging of interior object by entire product in native system, thereby realize helping the amblyopia crowd to see the purpose of near objects clearly.

Steering is a prism group 5, and between the focus of objective lens 2 and objective lens 2, it comprises a roof prism 51 and one and half suitable pentaprism 52 of this roof prism 51, is provided with partition 53 between roof prism 51 and half pentaprism 52.Prism table 54 is installed in the lens barrel group 1, and prism group 5 is fixedly mounted on the prism table 54.Because lens barrel group 1 adopted straight barrel structure, therefore, the steering ridge structure of present embodiment, it is little to make present embodiment have a volume, advantages such as compact conformation; Partition 53 is used to stop veiling glare; Prism table 54 is used for fixing prism group 5, makes product structure more stable.Certainly, corresponding if the lens barrel group does not adopt straight barrel structure, steering also can adopt other and this other suitable structures of lens barrel group shape.

Eyepiece group 3 comprises eyepiece stalk 31, with the eyepiece mount 32 that eyepiece stalk 31 is nested and cooperates, is positioned at first eyepiece 33, second eyepiece 34, the 3rd eyepiece 35 and the 4th eyepiece 36 of eyepiece mount 32 successively; One side of first eyepiece 33 and second eyepiece 34 are glued together, and the opposite side of first eyepiece 33 is provided with between eyepiece trim ring 37, the second eyepieces 34 and the 3rd eyepiece 35 and is isolated by eyepiece trim ring 37 respectively between the 3rd eyepiece 35 and the 4th eyepiece 36.Eyepiece adopts 4 convex lens, advantages such as it is short to have focal length, and telescopical volume is little, and picture element is good, and, because single lens objective aberration and spherical aberration are all quite serious, therefore, that a side and second eyepiece 34 of first eyepiece 33 is glued together, can achromatism and spherical aberration corrector, coma, eyepiece trim ring 37 is used for compressing each eyepiece, prevents that it from rocking, and makes imaging more steady and audible.

Objective lens 2 comprises the objective tube 21 that is positioned at lens barrel group 1, and it is glued together to be arranged in the objective tube 21 first object lens 22 and second object lens, 23, the first object lens 22 and second object lens 23, and the inboard of second object lens 23 also is provided with object lens trim ring 24.The aperture of objective lens that present embodiment adopts is bigger, can obtain better picture element.

In order to make imaging effect better, between prism group 5 and objective lens 2, light barrier can also be set.

Present embodiment has the following advantages:

(1) regulated quantity that improves positive diopter greatly can realize closely using, and is fit to special population and place.

(2) aperture of objective lens is big, and is big by the aperture, and picture element is good.

(3) visual field is big, is convenient to observe use.

Embodiment 2

As shown in Figure 3 and Figure 4, the present invention is straight tube monotubular barrel structure, and optical system adopts Kepler's telescopic system.Adopt the monotubular structure, volume is smaller and more exquisite, carries conveniently in use, and as not needing long-time use, present embodiment is more convenient than embodiment 1.A kind of optical amblyopia visual aid of the present invention, comprise lens barrel group 1, be arranged at the objective lens 2 and the eyepiece group 3 at lens barrel group 1 two ends respectively, the focus adjusting mechanism 4 that is used to focus, be provided with the steering that is used for erect image between objective lens 2 and the eyepiece group 3, the focus of objective lens 2 drops between eyepiece group 3 and eyepiece group 3 focuses, and the focus of eyepiece group 3 drops between objective lens 2 and objective lens 2 focuses.Present embodiment is imaged on target on the object lens image planes by object lens, by prism group 5 image rotations and eyepiece group 3, becomes erect image in the position of eye point, and human eye is observed at the place, position of eye point, is the erect image through amplifying; Again since the regulated quantity that has improved positive diopter greatly can realize closely using, make apart from 0.5-3 rice of the present invention with the optical system imaging of interior object by entire product in native system, thereby realize helping the amblyopia crowd to see the purpose of near objects clearly.

Though the present invention is described by the reference preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation on form and the details.

Claims

1, a kind of optical amblyopia visual aid, comprise lens barrel group (1), be arranged at the objective lens (2) and the eyepiece group (3) at described lens barrel group (1) two ends respectively, the focus adjusting mechanism that is used to focus (4), be provided with the steering that is used for erect image between described objective lens (2) and the described eyepiece group (3), it is characterized in that: the focus of described objective lens (2) drops between described eyepiece group (3) and eyepiece group (3) focus, and the focus of described eyepiece group (3) drops between described objective lens (2) and objective lens (2) focus.

2, a kind of optical amblyopia visual aid according to claim 1, it is characterized in that: described steering is prism group (5), be positioned between the focus of described objective lens (2) and objective lens (2), it comprises a roof prism (51) and one and suitable half pentaprism (52) of this roof prism (51), is provided with partition (53) between described roof prism (51) and described half pentaprism (52).

3, a kind of optical amblyopia visual aid according to claim 2 is characterized in that: prism table (54) is installed in the described lens barrel group (1), and described prism group (5) is fixedly mounted on the described prism table (54).

4, a kind of optical amblyopia visual aid according to claim 3, it is characterized in that: described eyepiece group (3) comprises eyepiece stalk (31), with the eyepiece mount (32) that described eyepiece stalk (31) is nested and cooperates, be positioned at first eyepiece (33), second eyepiece (34), the 3rd eyepiece (35) and the 4th eyepiece (36) of described eyepiece mount (32) successively; One side of described first eyepiece (33) and described second eyepiece (34) are glued together, the opposite side of described first eyepiece (33) is provided with eyepiece trim ring (37), and it is isolated to pass through eyepiece trim ring (37) between described second eyepiece (34) and the 3rd eyepiece (35) and between described the 3rd eyepiece (35) and the 4th eyepiece (36) respectively.

5, a kind of optical amblyopia visual aid according to claim 3, it is characterized in that: described objective lens (2) comprises the objective tube (21) that is positioned at described lens barrel group (1), be arranged at first object lens (22) and second object lens (23) in the described objective tube (21), described first object lens (21) and described second object lens (23) are glued together, and the inboard of second object lens (23) also is provided with object lens trim ring (24).

6, according to the described a kind of optical amblyopia visual aid of arbitrary claim in the claim 1 to 5, it is characterized in that: described lens barrel group (1) is the monotubular structure.

7, according to the described a kind of optical amblyopia visual aid of arbitrary claim in the claim 1 to 5, it is characterized in that: described lens barrel group (1) is double-barrel structure, comprise left lens barrel (11) and right lens-barrel (12), be provided with the identical objective lens of structure (2), eyepiece group (3) and steering in described left lens barrel (11) and the right lens-barrel (12); Described left lens barrel (11) and right lens-barrel (12) link together through bindiny mechanism (6).