CN218037515U

CN218037515U - Laser objective lens for correcting myopia

Info

Publication number: CN218037515U
Application number: CN202222115442.3U
Authority: CN
Inventors: 贾磊
Original assignee: Nanjing Guangyouda Photoelectric Technology Co ltd
Current assignee: Nanjing Guangyouda Photoelectric Technology Co ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2022-12-13
Anticipated expiration: 2032-08-11

Abstract

The utility model relates to an objective technical field, concretely relates to a laser objective for correcting myopia, including the lens cone, turn right by a left side in the inside of lens cone and set gradually first lens, second lens, third lens, fourth lens, fifth lens and sixth lens, the inside of lens cone just is located and is provided with first inside space ring between first lens and the second lens, the inside of lens cone just is located and is provided with the inside space ring of second between second lens and the third lens, the inside of lens cone just is located and is provided with the inside space ring of third between third lens and the fourth lens, the inside of lens cone just is located and is provided with the inside space ring of fourth between fourth lens and the fifth lens, the inside of lens cone just is located and is provided with locking mechanism between fifth lens and the sixth lens, the utility model discloses a design makes laser objective can treat patient's myopia under the condition of not damaged.

Description

Laser objective lens for correcting myopia

Technical Field

The utility model relates to an objective technical field, concretely relates to laser objective for correcting myopia.

Background

The objective lens is a lens group formed by combining a plurality of lens, the purpose of combined use is to overcome the imaging defect of a single lens and improve the optical quality of the objective lens, the amplification effect of the microscope mainly depends on the objective lens, the quality of the objective lens directly influences the image quality of the microscope, and the objective lens is a main component for determining the resolution and the imaging definition degree of the microscope, so the correction of the objective lens is very important;

human visual activity, mainly through the lens regulatory function, will enter intraocular object image focus on retina, will focus on the retina to move to the fovea of macula lutea on through the inner and outer rotary motion of eyeball, then turn into the bioelectricity signal, through optic nerve every grade neuron, upload to the brain central nervous system, after fusing 2 eyes separately uploaded image information, store and form memory;

in the whole visual activity, the coordination of keeping each function is the best means of guaranteeing visual quality and improving eyesight, at present, the means of quality myopia in domestic market is still the traditional laser operation, the cornea is thinned through the mode of the laser operation, thereby the myopia is corrected, the principle of the myopia is that under the relaxed state, parallel light rays are imaged before the retina after passing through the dioptric system of the eyes, the common operation modes comprise LASIK, full femtosecond and half femtosecond, but the cornea damage of the patient is irreversible, therefore, a novel laser objective lens is designed to change the technical defects, and the myopia of the patient is treated under the condition of no damage, which is particularly important.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a laser objective for correcting myopia to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a laser objective for correcting myopia, includes the lens cone, turn right by a left side in the inside of lens cone and set gradually first lens, second lens, third lens, fourth lens, fifth lens and sixth lens, the inside of lens cone just is located and is provided with first inside space ring between first lens and the second lens, the inside of lens cone just is located and is provided with the inside space ring of second between second lens and the third lens, the inside of lens cone just is located and is provided with the inside space ring of third between third lens and the fourth lens, the inside of lens cone just is located and is provided with the inside space ring of fourth between fourth lens and the fifth lens, the inside of lens cone just is located and is provided with locking mechanism between fifth lens and the sixth lens.

As the preferred scheme of the utility model, first lens, second lens, third lens, fourth lens, fifth lens and sixth lens are formed by the preparation of quartzy material.

As the preferred embodiment of the present invention, the fourth lens, the fifth lens and the sixth lens are positive lenses, and the first lens, the second lens and the third lens are negative lenses.

As the utility model discloses preferred scheme, the one side that the third lens is close to first inside space ring is the aspheric surface, the one side that the fourth lens is close to fourth inside space ring is the aspheric surface.

As a preferable embodiment of the present invention, the total length of the objective lens is 17.5mm.

As the preferred scheme of the utility model, first lens, second lens, third lens, fourth lens, fifth lens and sixth lens are arranged along the optical axis direction is coaxial in proper order.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the utility model, through the design of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens, firstly, under the condition of no damage, the myopia of the patient is obviously improved, and compared with the traditional laser surgery, the cornea is directly thinned through the laser surgery mode, thereby achieving the purpose of correcting the myopia;

secondly, the objective lens changes the refractive index of the eye fluid in the eyeball in a small range so as to achieve the purpose of correcting diopter, the selected laser 515-520 nm and 800-880 nm laser dual-band low-energy laser does not cause any damage to human eye tissues, the ultra-long working distance can directly act on the aqueous humor in the eyeball, and the refractive index is changed in a short time through the irradiation effect of the laser so as to achieve the change of the diopter of the whole eyeball system.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a partial structure of the present invention;

FIG. 3 is a MTF diagram of the laser objective of the present invention;

fig. 4 is a schematic diagram of the optical path of the laser objective of the present invention.

In the figure: 1. a lens barrel; 2. a first lens; 3. a second lens; 4. a third lens; 5. a fourth lens; 6. a fifth lens; 7. a sixth lens; 8. a first inner space ring; 9. a second inner space ring; 10. a third inner space ring; 11. a fourth inner space ring; 12. and (4) a locking mechanism.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of the present invention based on the embodiments of the present invention.

In order to facilitate understanding of the invention, a number of embodiments of the invention will be described more fully hereinafter with reference to the accompanying drawings, in which, however, the invention may be embodied in many different forms and is not limited to the embodiments described herein, but rather these embodiments are provided so as to render the disclosure more thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Examples

Referring to fig. 1-4, the present invention provides a technical solution:

the utility model provides a laser objective for correcting myopia, including lens cone 1, lens cone 1's inside is turned right by a left side and is set gradually first lens 2, second lens 3, third lens 4, fourth lens 5, fifth lens 6 and sixth lens 7, lens cone 1's inside just is located and is provided with first inside space ring 8 between first lens 2 and the second lens 3, lens cone 1's inside just is located and is provided with inside space ring 9 of second between second lens 3 and the third lens 4, lens cone 1's inside just is located and is provided with inside space ring 10 of third lens 4 and fourth lens 5, lens cone 1's inside just is located and is provided with inside space ring 11 of fourth between fourth lens 5 and the fifth lens 6, lens cone 1's inside just is located and is provided with locking mechanism 12 between fifth lens 6 and the sixth lens 7.

Furthermore, the first lens 2, the second lens 3, the third lens 4, the fourth lens 5, the fifth lens 6 and the sixth lens 7 are all made of quartz material.

Furthermore, the fourth lens 5, the fifth lens 6 and the sixth lens 7 are all positive lenses, and the first lens 2, the second lens 3 and the third lens 4 are all negative lenses.

Furthermore, one surface of the third lens 4 close to the first inner spacer 8 is aspheric, and one surface of the fourth lens 5 close to the fourth inner spacer 11 is aspheric.

Further, the total length of the objective lens is 17.5mm.

Further, the first lens 2, the second lens 3, the third lens 4, the fourth lens 5, the fifth lens 6, and the sixth lens 7 are coaxially arranged in this order along the optical axis direction.

Referring to fig. 1-4, the night vision objective lens in the present embodiment is shown in fig. 1, and the specific configuration thereof is not repeated, and a set of data parameters of the laser objective lens is given below;

as can be seen from Table 1, the effective focal length of the laser objective lens is 29.3mm +/-2%, the working distance is more than or equal to 40mm, the exit pupil position is 56mm, the object space distance is infinite, the cover glass is dry cover glass, the working wave band is 515-520 nm and 800-880 nm laser, the optical surface quality is 40-20 military standard, the exit pupil diameter is adapted to 10mm or 14mm, and the image surface size is 7mm or 4.5mm;

firstly, under the condition of no damage, the myopia of a patient is obviously improved, and compared with the traditional laser surgery, the method directly thins the cornea through the laser surgery, thereby achieving the purpose of correcting the myopia;

the objective lens changes the refractive index of the eye liquid in the eyeball in a small range so as to achieve the purpose of correcting diopter, the selected laser 515-520 nm and 800-880 nm laser dual-band low-energy laser does not cause any damage to human eye tissues, the ultra-long working distance can directly act on the aqueous humor in the eyeball, and the refractive index is changed in a short time through the irradiation effect of the laser so as to achieve the change of the diopter of the whole eyeball system.

TABLE 1 does the utility model discloses a data parameter of laser objective

The utility model discloses work flow: the utility model discloses a laser objective optical system is through each lens radius of curvature in table 1, the restraint of mutual interval and material characteristic is optimized the back, this laser objective's effective focal length is 29.3mm +/-2%, working distance is more than or equal to 40mm, exit pupil position is 56mm, the object space distance is infinity, the coverslip is dry object coverslip, the working wavelength band is 515-520 nanometer and 800-880 nanometer laser, the optical surface quality is 40-20 army standard, exit pupil diameter is adaptation 10mm or 14mm, image plane size is 7mm or 4.5mm, make laser objective under the condition that does not damage the patient, reach the effect of correcting myopia; objective carries out the refracting index change of minizone to the inside eyeliquid of people's eyeball to reach the purpose of revising diopter, and the selected laser instrument 515-520 nanometer and 800-880 nanometer laser dual band low energy laser can not cause any damage to people's eye tissue, and the working distance of overlength can direct action in the aqueous humor in people's eyeball, through the effect of shining of laser, changes the refracting index in the short time and reaches the change of whole eyeball system diopter with this, the utility model discloses a design makes laser objective can treat patient's myopia under the condition of not damaged.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A laser objective for correcting myopia, comprising a barrel (1), characterized in that: the lens barrel comprises a lens barrel body (1), and is characterized in that a first lens (2), a second lens (3), a third lens (4), a fourth lens (5), a fifth lens (6) and a sixth lens (7) are sequentially arranged in the lens barrel body (1) from left to right, a first inner space ring (8) is arranged in the lens barrel body (1) and between the first lens (2) and the second lens (3), a second inner space ring (9) is arranged in the lens barrel body (1) and between the second lens (3) and the third lens (4), a third inner space ring (10) is arranged in the lens barrel body (1) and between the third lens (4) and the fourth lens (5), a fourth inner space ring (11) is arranged in the lens barrel body (1) and between the fourth lens (5) and the fifth lens (6), and a locking mechanism (12) is arranged in the lens barrel body (1) and between the fifth lens (6) and the sixth lens (7).

2. A laser objective lens for correcting myopia according to claim 1, wherein: the first lens (2), the second lens (3), the third lens (4), the fourth lens (5), the fifth lens (6) and the sixth lens (7) are all made of quartz materials.

3. A laser objective lens for correcting myopia according to claim 1, wherein: the fourth lens (5), the fifth lens (6) and the sixth lens (7) are all positive lenses, and the first lens (2), the second lens (3) and the third lens (4) are all negative lenses.

4. A laser objective lens for correcting myopia according to claim 1, wherein: one surface of the third lens (4) close to the first inner space ring (8) is an aspheric surface, and one surface of the fourth lens (5) close to the fourth inner space ring (11) is an aspheric surface.

5. A laser objective lens for correcting myopia according to claim 1, wherein: the total length of the objective lens is 17.5mm.

6. A laser objective lens for correcting myopia according to claim 1, characterized in that: the first lens (2), the second lens (3), the third lens (4), the fourth lens (5), the fifth lens (6) and the sixth lens (7) are coaxially and sequentially arranged along the optical axis direction.