KR101818431B1 - Multi-layer coating lens for medical loupe - Google Patents

Multi-layer coating lens for medical loupe Download PDF

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Publication number
KR101818431B1
KR101818431B1 KR1020160013273A KR20160013273A KR101818431B1 KR 101818431 B1 KR101818431 B1 KR 101818431B1 KR 1020160013273 A KR1020160013273 A KR 1020160013273A KR 20160013273 A KR20160013273 A KR 20160013273A KR 101818431 B1 KR101818431 B1 KR 101818431B1
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Prior art keywords
thin film
coating
refractive index
multilayer
thin films
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KR1020160013273A
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Korean (ko)
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KR20170092220A (en
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홍진혁
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주식회사 일루코
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • G02B1/113—Anti-reflection coatings using inorganic layer materials only
    • G02B1/115—Multilayers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0077—Devices for viewing the surface of the body, e.g. camera, magnifying lens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B25/00—Eyepieces; Magnifying glasses
    • G02B25/002—Magnifying glasses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses

Abstract

The present invention relates to a multilayer coating lens provided in a medical magnifying glass, comprising: a transparent lens as a base; A first coating layer on a side surface of the transparent lens, wherein a thin film formed by vapor-coating a first high refractive index coating compound and a thin film formed by vapor-coating a first low refractive index coating compound are sequentially alternated to form a multilayer thin film structure; And a second coating layer on the other side of the transparent lens, wherein a thin film formed by vapor-coating a second low refractive index coating compound and a thin film formed by vapor-coating the second high refractive index coating compound are sequentially alternated to form a multilayer thin film structure Wherein the first high refractive index coating compound is made of TiO 2 , the first low refractive index coating compound is made of SiO 2 , the second low refractive index coating compound is made of Al 2 O 3 or MgF 2 , The second high refractive index coating compound is provided as ZrO 2 or TiO 2 .

Description

[0001] MULTI-LAYER COATING LENS FOR MEDICAL LOUPE [0002]

The present invention relates to a multilayer coated lens installed on a medical loupe to optically assist and protect the wearer ' s eye.

Among various medical equipments used in the medical field, the Loupe for medical use complements the optical performance limitations of the eye of the operator so that the operator can observe even the parts that are difficult to observe with the naked eye, so that it can be done precisely and accurately. It is an auxiliary optical device.

Such a medical magnifying glass is generally mounted on a spectacle or a headband type device during operation and provides a magnified view in front of the operator's eyes constantly during the operation. In this process, A medical loupe has been developed in a form that can reduce the inconvenience of a practitioner as much as possible and provide various conveniences because the user has to carry out the operation while feeling the load due to the medical loupe.

In this connection, the structure is modified so that the operator can wear the medical magnifier to fine-adjust the phase of the magnifying glass, so that the practitioner can be provided with an enlarged field of view in accordance with his or her physical condition without inconvenience Prior art documents related to the prior art include an "optical magnifying glass" (hereinafter referred to as " prior art ") of Korean Patent Laid-Open Publication No. 10-2003-0011310.

However, in the case of a variety of conventional techniques proposed to enhance the convenience of a practitioner when wearing a medical magnifying glass including a conventional technique, there is a problem in that, It has been studied to increase the wearing comfort of a practitioner through structural modification. However, it is difficult to consider the optical load of a practitioner who has to undergo surgery for a long period of time, .

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a medical microscope which is capable of remarkably reducing the optical load of an operator who frequently goes through long- The present invention provides a technique that can stably protect a user.

According to an aspect of the present invention, there is provided a multi-layer coated lens provided on a medical magnifying glass, comprising: a transparent lens as a base; And a first coating layer on which a thin film formed by vapor-coating a first high refractive index coating compound on one side of the transparent lens and a thin film formed by vapor-coating the first low refractive index coating compound are sequentially alternated to form a multilayer thin film structure The first high refractive index coating compound is provided as TiO 2 , and the first low refractive index coating compound is provided as SiO 2 .

Here, the first high refractive index coating compound may be one of TiO 2, Ti 2 O 3 and Ti 2 O 3 , the first low refractive index coating compound may be SiO 2 , and the multilayer thin film structure The one side thin film forming the first layer and the one thin film forming the last layer of the multilayer thin film structure of the first coating film are formed by vapor-coating the same coating compound.

The first coating layer may include one side first thin film formed by vapor-coating the first high refractive index coating compound on one side of the transparent lens to form a plurality of odd-numbered layers of the multilayer thin film structure of the first coating layer One side thin film; And one side second thin film formed by vapor-coating the first low refractive index coating compound on the first side thin film to form an even layer of the multilayer thin film structure of the first coating film, One side of the multilayer thin film structure of the first coating layer is formed by vapor-coating the first high refractive index coating compound made of TiO 2 .

The first coating layer is formed of a multilayer thin film structure having thirty one layers, and the plurality of one thin films constituting the odd layer of the multilayer thin film structure of the first coating layer has a physical thickness of 15 nm to 78 nm And the plurality of one side thin films constituting the even layers of the multilayer thin film structure of the first coating film are deposited and coated so as to have a physical thickness of 51 nm to 81 nm.

The first, ninth, eleventh and thirty first thin films of the plurality of one thin films constituting the odd-numbered layers of the multilayer thin film structure of the first coating layer are deposited and coated to have a physical thickness of 15 nm or more and less than 36 nm, The third, fifth, seventh, thirteenth, fifteenth, nineteenth, seventeenth, fifteenth, nineteenth, seventeenth, fifteenth, seventeenth, fifteenth, nineteenth, seventeenth, seventeenth, fifteenth, nineteenth, seventeenth, twenty seventh, seventeenth, seventeenth, seventeenth, seventeenth, The seventeenth, twenty-fifth, and twenty-eighth thin films of the plurality of one thin films constituting the odd-numbered layers of the multilayer thin film structure of the first coating film are deposited and coated so as to have a physical thickness of 56 nm or more and less than 78 nm, The sum of the physical thicknesses of the plurality of one-side thin films constituting the odd-numbered layers of the multilayer thin film structure is set to be 680 to 720 nm.

In addition, the 18th and 24th thin films on one side of the plurality of one side thin films constituting the even-numbered layers of the multilayer thin film structure of the first coating film are deposited and coated to have a physical thickness of 51 nm or more and 61 nm or less, The second, the 8th, the 10th, the 26th, the 28th and the 30th thin film on one side of the plurality of one side thin films constituting the even-numbered layer of the structure are deposited and coated to have a physical thickness of 61 nm or more and less than 71 nm, The first, second, third, fourth, sixth, 12th, 14th, 16th, 20th and 22th thin films on one side of the even-numbered layers of the first coating layer are deposited to have a physical thickness of 71 nm or more and less than 81 nm, The sum of the physical thicknesses of the plurality of one-side thin films constituting the even-numbered layers of the structure is set to be 1000 to 1050 nm.

The multilayer coating lens provided on the medical loupe includes a thin film formed by vapor-coating a second low refractive index coating compound on the other side of the transparent lens and a thin film formed by vapor-coating the second high refractive index coating compound, Wherein the second low refractive index coating compound is made of Al 2 O 3 or MgF 2 and the second high refractive index coating compound is ZrO 2 or TiO 2 .

Here, the second coating layer may include a first side first thin film formed by coating the second low refractive index coating compound formed of Al 2 O 3 on the other side of the transparent lens; A second side thin film formed by vapor-coating the second side high refractive index coating compound on the other side first thin film; The second thin film of the second low refractive index coating layer formed of Al 2 O 3 is vapor-deposited on the other second thin film to form a third thin film having a physical thickness thinner than that of the other first thin film; A fourth thin film on the other side of which the second high refractive index coating compound is deposited on the other third thin film to have a physical thickness thinner than that of the other second thin film; And the other fifth thin film formed by coating the second low refractive index coating compound provided with MgF 2 on the other fourth thin film by evaporation coating.

According to the present invention, the following effects can be obtained.

First, it is possible to protect the eye of the operator by blocking the transmission of UV light through the first coating film constituting one side of the multi-layer coating lens provided on the medical magnifying glass.

Second, the first coating layer, which is one side of the multilayer coating lens installed on the medical magnifying glass, cuts off the transmission of dark blue light, protects the eyeball of the operator, and wears a medical magnifying glass for a long time. The problem that the eye fatigue increases and the optical load is increased can be solved.

Thirdly, by reducing the reflectance of the light transmitted through the second coating layer, which is the other side of the multilayer coating lens installed on the medical magnifying glass, and improving the transmittance, the degree of glare of the operator is reduced and the optical clarity of the provided visual field is increased, An observation of an enlarged field of view can be made.

1 is a perspective view showing a multilayer thin film structure of a multilayer coating lens installed in a medical loupe according to the present invention.
2 is a graph showing a result of measurement of a transmission spectrum of a lens installed in a conventional medical magnifying glass.
FIG. 3 is a graph showing a result of measuring a reflection spectrum of a multilayer coating lens installed in a medical magnifying glass according to the present invention.
4 is a graph showing a result of measurement of a transmission spectrum of a lens installed in a medical magnifying glass according to the present invention.

The preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings, in which the technical parts already known will be omitted or compressed for the sake of brevity.

<Description of Multilayer Coating Lens Installed on Medical Loupe>

The multilayer coating lens 100 installed in the medical magnifying glass of the present invention comprises a transparent lens 110 as shown in FIG. 1; A first coating layer 120; And a second coating layer 130.

The transparent lens 110 is a base structure and constitutes a basic structure constituting the multilayered coating lens 100 of the present invention, which is provided in each of a pair of magnifying glasses positioned at the distal end of an operator's eye of a medical magnifying glass (Loupe).

Most preferably, the multilayered coated lens 100 of the present invention is preferably disposed at the nearest tip side (a position in the loupe farthest away from the observer's eye) on the image to be observed on the installation structure of the plurality of optical members in the magnifying glass , But is not limited thereto and is applicable to various positions.

On one side of the transparent lens 110, a first coating layer 120 is formed for the purpose of providing UV light blocking and degree of blocking of ultraviolet light, which is optimized for the eye protection of an operator wearing a medical magnifying glass.

For this purpose, the first coating layer 120 is formed of a first refractive index coating compound provided as one of TiO 2, Ti 2 O 3 and Ti 2 O 3 and a first low refractive index coating compound provided as SiO 2 , ) Is sequentially coated on one side of the substrate by vacuum deposition to form a multilayer thin film structure.

Here, the coating compound is a reagent which means a deposition material coated by vacuum deposition to form a thin film. The coating compound, which has been evaporated by a high temperature in a vacuum state to become an evaporated particle state, A thin film formed on one side of the transparent lens 110 or a thin film formed on one side of the transparent lens 110 is deposited and deposited on the thin film.

In other words, the multilayer thin film structure of the first coating layer 120 includes a first thin film TF1 formed by evaporation coating on one side of the transparent lens 110, a plurality of first thin films TF3 and TF5 , TF7, ..., TF29, TF31 ) is provided by a deposition coating of a first high refractive index coating compound is provided as TiO 2, starting with one side of the first thin film (TF1) one side of the second thin film (TF2) formed by depositing the coating on the even-numbered layer and forming a plurality of thin films made of one provided by a deposition coating of the first low refractive index coating compound is provided as a (TF4, TF6, TF8, ... , TF28, TF30) is SiO 2.

In addition, the multilayer thin film structure of the first coating layer 120 corresponds to a thin film formed by deposition coating of the first high refractive index coating compound, one side thin film (TF1, TF31) constituting the first layer and the last layer on the multilayer thin film structure .

More specifically, the first coating layer 120 is provided in 31 layers in order to provide UV light blocking and degree of blocking of blue light optimized for the eye protection of the practitioner wearing a medical magnifying glass.

TF3, TF5, ..., TF29, TF31) formed by vapor-deposition coating of the first high refractive index coating compound among these 31 layers has a physical thickness of 15 nm to 78 nm TF2, TF4, TF6, ..., TF28, TF30) formed by vapor-deposition coating of the first low refractive index coating compound made of SiO 2 so as to have a predetermined thickness Is preferably deposited to have a physical thickness of 51 nm to 81 nm.

As a result, the coating design results of the respective thin films (TFs) constituting the multilayer thin film structure of the first coating layer 120 are classified according to physical thickness and optical thickness, same.

That is, since the first coating film 120 is coated through vacuum deposition in the form shown in the following Table 1, it is possible to prevent the wearer from wearing the medical magnifier in the environment where bright light is provided to the surgical site by various surgical lighting apparatuses So that the blocking of UV light and blue light, which cause problems of eye health deterioration including a rise in eye fatigue and a decrease in concentration, can be effectively and appropriately performed.

The first coating film 120, Coating compound Index (Index) Optical thickness [FWOT] Physical Thickness [nm] The first thin film (TF1) TiO 2 2.35@460nm 0.1370 26.8713 The second thin film (TF2) SiO 2 1.45@440nm 0.2156 65.5828 The third thin film (TF3) TiO 2 2.35@460nm 0.2153 42.2356 The fourth thin film (TF4) SiO 2 1.45@440nm 0.2499 76.0320 The fifth thin film (TF5) TiO 2 2.35@460nm 0.2009 39.4038 The sixth thin film (TF6) SiO 2 1.45@440nm 0.2350 71.4916 The seventh thin film (TF7) TiO 2 2.35@460nm 0.1940 38.0530 The eighth thin film (TF8) SiO 2 1.45@440nm 0.2130 64.8034 The ninth thin film (TF9) TiO 2 2.35@460nm 0.1645 32.2717 The tenth thin film (TF10) SiO 2 1.45@440nm 0.2053 62.4657 The eleventh thin film (TF11) TiO 2 2.35@460nm 0.1828 35.8662 Thirteenth Thin Film (TF12) SiO 2 1.45@440nm 0.2437 74.1495 Thirteenth Thin Film (TF13) TiO 2 2.35@460nm 0.2066 40.5253 Thirteenth Thin Film (TF14) SiO 2 1.45@440nm 0.2546 77.4439 Thirteenth Thin Film (TF15) TiO 2 2.35@460nm 0.2169 42.5486 Thirteenth Thirteenth Thin Film (TF16) SiO 2 1.45@440nm 0.2366 71.9817 Thirteenth Thin Film (TF17) TiO 2 2.35@460nm 0.3180 62.3740 Thirteenth Thin Film (TF18) SiO 2 1.45@440nm 0.1685 51.2757 Thirteenth Thin Film (TF19) TiO 2 2.35@460nm 0.2695 52.8681 Thirteenth Thin Film (TF20) SiO 2 1.45@440nm 0.2661 80.9560 Thirteenth Thin Film (TF21) TiO 2 2.35@460nm 0.2277 44.6684 Thirteenth Thin Film (TF22) SiO 2 1.45@440nm 0.2444 74.3633 Thirteenth Thirteenth Thin Film (TF23) TiO 2 2.35@460nm 0.2539 49.8068 The 24th thin film (TF24) SiO 2 1.45@440nm 0.1855 56.4327 The 25th thin film (TF25) TiO 2 2.35@460nm 0.3486 68.3705 The 26th thin film (TF26) SiO 2 1.45@440nm 0.2157 65.6172 The 27th thin film (TF27) TiO 2 2.35@460nm 0.1943 38.1142 The 28th thin film (TF28) SiO 2 1.45@440nm 0.2029 61.7287 Thirteenth Thin Film (TF29) TiO 2 2.35@460nm 0.3955 77.5733 Thirty Thin Films (TF30) SiO 2 1.45@440nm 0.2330 70.8984 Thirty-first thin film (TF31) TiO 2 2.35@460nm 0.0806 15.8186

A plurality of one side thin films TF1, TF3, TF5, and TF5 constituting the odd-numbered layers of the multilayer thin film structure of the first coating layer 120 may be formed in the same manner as the first coating layer 120, 7, 11, and 31 thin films (TF1, TF9, TF11, TF31) on one side of the first, third, fifth, seventh, (TF3, TF5, TF7, TF13, TF15, TF19, TF21, TF23, and TF27) having a physical thickness of 36 nm or more and less than 56 nm, , 25 and 29 thin films (TF17, TF25, TF29) are vapor-deposited to have a physical thickness of 56 nm or more and less than 78 nm.

The sum of the physical thicknesses of the plurality of one-side thin films TF1, TF3, TF5, ..., TF29 and TF31 constituting the odd-numbered layers of the multilayer thin film structure of the first coating layer 120 is preferably 680 to 720 nm.

The 18th and 24th thin films TF18 and TF24 on one side of the plurality of one side thin films TF2, TF4, TF6, ..., TF28 and TF30 constituting the even-numbered layers of the multilayer thin film structure of the first coating film 120 have a thickness of 51 nm or more (TF2, TF8, TF10, TF26, TF28, TF30) have a physical thickness of greater than 61 nm and less than 71 nm (TF4, TF6, TF12, TF14, TF16, TF20, TF22) is deposited to have a physical thickness of 71 nm or more and less than 81 nm Coated.

The sum of the physical thicknesses of the plurality of one-side thin films TF2, TF4, TF6, ..., TF28, and TF30 constituting the even-numbered layers of the multilayer thin film structure of the first coating layer 120 is preferably 1000 to 1050 nm.

In order to confirm this, the first coating layer 120 designed as described above is applied to the multilayer coating lens 100 of the present invention formed on one side of the transparent lens 110 and the optical As a result of the measurement of the light transmission spectrum of the lens using a spectrophotometer, as shown in comparison between FIG. 2 and FIG. 3, in the case of an optical lens installed in a conventional medical Loupe, ultraviolet light and blue light The optical load of the operator is increased so that the user easily feels the fatigue of the eyes, distracts the concentration of the surgical environment, and further impairs the suspension of the operation.

As shown in FIG. 3, the multilayer coating lens 100 of the present invention has a shielding degree of UV light and blue light through the first coating layer 120 formed on one side, It is possible to confirm that the present invention is at a level suitable for eye protection of a practitioner wearing a medical magnifying glass in an environment provided for the user.

On the other hand, on the other side of the transparent lens 110, the second coating layer 130 prevents eyeglasses of an operator wearing a medical magnifying glass, glare caused by reflection of transmitted light, reduction of reflectivity of light optimized for improvement of optical sharpness, Is intended to provide a degree of enhancement.

For this purpose, the second coating layer 130 may include a second low refractive index coating compound provided by Al 2 O 3 or MgF 2 and a second high refractive index coating compound provided by ZrO 2 or TiO 2 . And then alternately coated on the other side through vacuum deposition to form a multilayer thin film structure.

Here, the second coating film 130 prevents light from being incident on the multi-layer coating lens 100 optimized for precise and effective operation by preventing glare caused by the light of a practitioner wearing a medical magnifying glass and improving optical clarity. It is preferable to provide five thin film layers in order to reduce the reflectance and increase the transmittance.

The second coating layer 130 may be formed by coating a second low refractive index coating compound formed of Al 2 O 3 on the other side of the transparent lens the other first provided in one thin film (BF1), ZrO 2 or TiO 2, the second high refractive index coating compound is the other first the other second thin film formed by the coating deposited on the thin film (BF1) (BF2), Al 2 O 3 provided by the second the low refractive index coating compound is the other side the other side formed by depositing the coating on the second thin film (BF2) to have a thin physical thickness than the other first thin film (BF1) a third thin film (BF3), the second high refractive index provided by ZrO 2 or TiO 2 coating compound is the other side a third thin film (BF3) is deposited coating on the other side the second low refractive index coating compound prepared in 2 other side a fourth film formed so as to have a thin physical thickness than the thin film (BF2) (BF4), and MgF 2 other side the And the other fifth thin film BF5 formed by vapor-coating on the fourth thin film BF4 .

As a result, the coating design results of the respective thin films (BF) constituting the multilayer thin film structure of the second coating layer 130 are classified according to physical thickness and optical thickness, and the results are summarized in Table 2 same.

The second coating film 130, Coating compound Index (Index) Optical thickness [FWOT] Physical Thickness [nm] The first thin film (BF1) Al 2 O 3 1.63@475nm 0.2698 78.4301 The second thin film (BF2) ZrO 2 / TiO 2 2.07@475nm 0.3792 86.9037 The third thin film (BF3) Al 2 O 3 1.63@475nm 0.0143 4.1749 The fourth thin film (BF4) ZrO 2 / TiO 2 2.07@475nm 0.1425 32.6572 The fifth thin film (BF5) MgF 2 1.38@480nm 0.2701 93.8185

That is, since the second coating layer 130 is coated through vacuum deposition in the form shown in Table 2, the multilayer coating lens installed in the medical magnifying glass in an environment in which bright light is provided to the surgical site by various surgical lighting apparatuses 100) and the transmittance thereof is increased to prevent the glare felt by the practitioner and to improve the optical clarity, thereby solving the problem of impeding the concentration of the operator and the accuracy of the surgery due to the reflection of the light.

In order to confirm this, a second coating layer 130 designed as described above is formed on the other side of the transparent lens 110. The multilayer coating lens 100 of the present invention and the optics provided on a conventional medical Loupe As shown in FIG. 4, the multilayer coated lens 100 according to the present invention has a light reflection spectrum of the lens measured by using a spectrophotometer. As shown in FIG. 4, the multilayer coated lens 100 according to the present invention has the second coating layer 130 formed on the other side, Is suitable for the prevention of glare and improvement of optical sharpness of a practitioner who wears a medical magnifying glass in an environment where bright light is supplied to a surgical site by various surgical lighting apparatuses.

The embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection is to be construed in accordance with the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

100: multilayer coating lens
110: Transparent lens
120: first coating film
LF: one side thin film
130: second coating film
BF: the other side thin film

Claims (8)

A transparent lens as a base;
A thin film formed by vapor-coating a first high refractive index coating compound, which is one of TiO 2, Ti 2 O 3 and Ti 2 O 3 , on one side of the transparent lens, and a first low refractive index coating compound provided by SiO 2 , A first coating layer formed by sequentially alternating the thin films to form thirty one layers; And
A thin film formed by vapor-coating a second low refractive index coating compound made of Al 2 O 3 or MgF 2 on the other side of the transparent lens and a thin film formed by vapor-coating a second high refractive index coating compound made of ZrO 2 or TiO 2 And a second coating layer formed of five layers alternating with each other to increase the transmittance and reduce the reflectance of light incident on the multilayer coating lens,
One side of the multilayer thin film structure of the first coating layer and the one side of the multilayer thin film structure of the first coating layer are deposited and coated with the same coating compound,
The first, ninth, eleventh and thirty first thin films of the plurality of one thin films constituting the odd-numbered layers of the multilayer thin film structure of the first coating layer are deposited and coated to have a physical thickness of 15 nm or more and less than 36 nm,
The third, fifth, seventh, thirteenth, fifteenth, nineteenth, twenty-third, and seventeen thin films on one side of the plurality of one side thin films constituting the odd-numbered layers of the multilayer thin film structure of the first coating film have physical thicknesses of not less than 36 nm and less than 56 nm Coated,
The seventeenth, twenty-fifth, and twenty-ninth thin films of the plurality of one-side thin films constituting the odd-numbered layers of the multilayer thin film structure of the first coating film are deposited and coated to have a physical thickness of greater than 56 nm and less than 78 nm,
The sum of the physical thicknesses of the plurality of one-side thin films constituting the odd-numbered layers of the multilayer thin film structure of the first coating film is set to 680 to 720 nm,
The one-sided 18th and 24th thin films of the plurality of one-sided thin films constituting the even-numbered layers of the multilayer thin film structure of the first coating layer are deposited and coated to have a physical thickness of 51 nm or more and less than 61 nm,
The first, second, eighth, tenth, 26th, 28th and 30th thin films on one side of the plurality of one side thin films constituting the even-numbered layers of the multilayer thin film structure of the first coating film are deposited and coated to have a physical thickness of 61 nm or more and less than 71 nm,
The first, fourth, sixth, twelfth, fourteenth, sixteenth, sixteenth, twenty second and twenty second thin films of the plurality of one thin films constituting the even layers of the multilayer thin film structure of the first coating layer are deposited and coated to have a physical thickness of 71 nm or more and less than 81 nm ,
The sum of the physical thicknesses of the plurality of one-side thin films constituting the even-numbered layers of the multilayer thin film structure of the first coating film is set to be 1000 to 1050 nm,
Wherein the second coating layer
A second side thin film formed by vapor-coating a second low refractive index coating compound made of Al 2 O 3 on the other side of the transparent lens;
A second side thin film formed by vapor-coating a second side high refractive index coating compound made of ZrO 2 or TiO 2 on the other side first thin film;
A third side thin film formed on the other side of the second thin film to have a physical thickness thinner than the other side of the first thin film by being coated with the second low refractive index coating compound made of Al 2 O 3 ;
A fourth side thin film formed on the other side of the third thin film to have a physical thickness thinner than that of the other side second thin film by coating a second high refractive index coating compound made of ZrO 2 or TiO 2 ; And
And a second side fifth thin film formed by vapor-coating a second side low refractive index coating compound made of MgF 2 on the other side fourth thin film. delete delete delete delete delete delete delete
KR1020160013273A 2016-02-03 2016-02-03 Multi-layer coating lens for medical loupe KR101818431B1 (en)

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