baber/WOPTO huggingface dataset:
Patent KR-20000071861-A (KR)
Title: 염소 함유 수지 조성물
IPC: C08K5/07
Filed: 2000-04-28
Abstract: 다음을 포함하는 염소 함유 수지 조성물: 
     (a) 염소 함유 수지, 
     (b) 칼슘 함유 히드록시드, 
     (c) 히드로탈사이트 화합물, 
     (d) β-디케톤 화합물 또는 디히드로피리딘(또는 이의 올리고머), 및 
     (e) 알칼리토금속 또는 아연의 카르복실레이트 또는 유기 포스페이트. 
     이 수지 조성물은 성형에 의해 발포되지 않고, 우수한 열안정성 및 착색 내성을 갖는 성형품을 수득할 수 있다.
Patent KR-20000071957-A (KR)
Inventor: KIM JONG SIK
IPC: H04L12/407
Filed: 2000-05-09
Abstract: PURPOSE: A system and a method for controlling web traffic using priority are provided in which web information a user inputs to connect with a web site is given priority and the web information is processed according to the priority, to thereby control a large amount of web traffic. CONSTITUTION: In a method for controlling web traffic using priority, in case where simultaneous accesses generate excessively carried out on the Internet, a web managing server(32) changes the standard port numbers of a web server(31), receives web information transmitted from user computers(20) and determines priority of the web information. The web managing server eliminates users who are not selected by the web server or users having low priority or delays processing time for them, thereby improving processing capacity of the web server and monitoring the processed result.
Patent KR-20000050083-A (KR)
Inventor: KO SUNG WOOK
IPC: G06Q50/10
Filed: 2000-05-15
Abstract: PURPOSE: A system for controlling a manless environment using a very high speed network is provided to enable the system to be operated, and thereby allowing an image chatting, a cyber-shopping and a cyber-diagnosis via an internal camera, and enabling a quick respond to a gas leakage and a fire via. CONSTITUTION: A means for applying environment information to an integrated controller include a wireless keyboard(8), a wireless mouse(7), an internal camera(10) and a secret number recognition system at a common entrance hall(5). The means for determining the environment information and generating an instruction include a main controller(2), a hub(6) and an integrated controlling program. The main controller(2) controls the function for communication with a function controller(3), a house entrance hall(4) and the common entrance hall(5). The hub(6) keeps an internet connection environment good. The function controller(3) is included in the means for performing a remote control according to the instruction from the integrated controller.
Patent KR-20010106612-A (KR)
Inventor: KIM YOON HWAN
IPC: E02D5/80
Filed: 2000-05-22
Abstract: 본 발명은 각종 토건구조물의 구축공사시 그 토건구조물이 지진이나 풍력, 수압, 편토압과 같은 외력에 의해 붕괴되거나 전도되는 것을 방지하기 위하여 토건구조물을 지반에 설치하는 그라운드 앵커로 고정하는 토건구조물 고정용 그라운드 앵커의 부품에 관한 것으로, 더욱 상세하게는 그라운드 앵커의 피시(PC)강연선을 클램핑 고정하는 콜릿척 형태로 형성된 3개의 죠오 내주연 호(弧)의 곡률을 피시(PC)강연선과 죠오가 압축되기전의 자유상태의 진원 외경 곡률보다는 작게 제작하여 피시(PC)강연선이 웨지에의해 압축되었을 때의 외경 곡률과는 동일하게  형성하고, 상기 3개의 죠오 외주연을 3개의 죠오가 형성하는 진원상의 외주연의 곡률보다 작은 호(弧)로 형성함으로서, 웨지의 내측에서 피시(PC)강연선이 웨지에의해 압축될 때 피시(PC)강연선의 외주연전체와 3개 죠오의 내주연 전체면이 면접촉하게 조여주고, 3개의 죠오를 내측으로 조여주는 웨지의 외주연과 소켓의 테이퍼홀 전체면이 면접촉하게 되어 균일한 압축하중으로 웨지를 조여주며 그 웨지의 내측에 삽입된 피시(PC)강연선의 전체면을 균일한 압축하중으로 조여주므로 피시(PC)강연선의 원주상에 집중하중이 작용하지 않아 피시(PC)강연선의 파단하중을 크게할 수 있고 웨지의 외주연과 소켓의 테이퍼홀이  면접촉을 하게되므로 선접촉시 접촉부위가 하중에의한 변위를 예방하고 안정된 고정상태가 될수 있도록 하는 토건구조물 고정을 위한 피시(PC)강선용 웨지에 관한 것이다. 
     본 발명은 토건구조물이 구축되는 지반(1)에는 말단부에 소정길이 만큼 요철관(2)이 외삽고정된 앵커(17)가 그라우트재(4)에 의해 삽입고정되고, 지반(1) 상측에 타설된 콘크리트 타설층(5)의 외측에는 피시(PC)강연선(3)의 선단부를 잡아주는 고정수단이 지지 설치되는 앵커브라켓트(6)가 설치되며, 상기 고정수단은 앵커브라켓트(6)의 외측으로 노출되는 피시(PC)강연선(3)의 노출단측의 앵커브라켓트(6)에 테이퍼홀(7)을 관통 형성한 소켓(8)이 설치되고, 이 소켓(8)의 테이퍼홀(7)에는 콜릿척 형태의 웨지(16)를 쐐기식으로 삽입 설치하되, 이 웨지(16)는 길이방향으로 몸체의 살두께 전체가 절개된 1개의 절개부(9)와, 몸체의 살두께 외부만 길이방향으로 절개홈(10)을 형성하여 내측부분에 얇은 파단부(11)를 형성한 2개의 파단절개홈(12)을 일정각도로 분할되게 형성하여 각각의 절개부(9)와 파단절개홈(12)에 의해 3개의 죠오(13)를 구비하고 내부 피시(PC)강연선이 삽입 관통되는 통공(14)의 내주연에 피시(PC)강연선(3)을 클램핑하는 다수의 클램핑이빨(15)을 형성한 것에 있어서, 상기 3개의 죠오(13)의 내주연 곡률이 웨지(16)의 통공(14)으로 삽입 관통되는 피시(PC)강연선(3)의 외경 곡률보다 70∼90% 작은 비율로 형성되고, 상기 3개 죠오(13)의 외주연 곡률이 각각의 절개부(9)와 파단절개홈(12)의 가상외주연 상의 외경 곡률보다 70∼90% 작은 비율로 형성되며, 피시(PC)강연선(3)의 외경이 수축될 때 피시(PC)강연선(3)의 수축률과 동일하게 3개 죠오(13)의 내주연 호의 곡률이 형성되어 피시(PC)강연선(3)의 외주연 전체면을 면접촉식으로 클램핑하게 하고, 3개 죠오(13)의 외주연 호와 그에 대응하는 소켓(8)의 테이퍼홀(7)도 피시(PC)강연선(3)의 수축에 따라 죠오(13)의 살두께가 수축하는 곡률만큼 축소되어 웨지(16)의 3개 죠오(13)의 외주면과 소켓(8)의 테이퍼홀(7)이 면접촉되어 균일한 압력으로 각각의 죠오(13)를 조여줄 수 있는 것이다.
Patent KR-20010007115-A (KR)
Inventor: ANN MARIE MAYNARD
IPC: G06F12/10
Filed: 2000-05-24
Abstract: PURPOSE: A system is provided to improve a computer memory by making a protection check on an entry in an address cache table and making no check when retrieval from the address cache table is performed with the entry. CONSTITUTION: A CPU generates the effective address of an instruction or data to be requested(300) and then requests necessary address conversion(305). According to the requested effective address, the address cache table is searched(310). At this time, a protection check on the entry in the address cache table is not made. Thus, when an effective entry is found, the system checks whether or not a requested virtual page can match the entry(320). When so, a physical address is calculated(325), requested information is fetched from a memory subsystem(330), and a next address request is held and repeated.
Patent KR-20010109784-A (KR)
Inventor: PARK JANG BUM
Filed: 2000-06-02
Abstract: 본 발명은 오프라인 잡지와 온라인 매체의 정보 접속 장치 및 그 방법에 관한 것으로, 오프라인 잡지에 게재된 특정내용에 대한 상세한 정보 서비스를 온라인으로 제공받을 수 있도록 하고, 상기 정보 리스트내의 상품 및 광고에 대한 내용을 해당 상품의 제조, 판매 기업의 홈페이지나 전자 상거래 사이트, 사이버 쇼핑몰과 연계시켜 광고효과를 증대시킴은 물론 상품구매까지 이르게 하는 장치 및 방법과 오프라인 잡지의 지면내용에 포함된 특정기사, 인물, 지명, 단체, 기업, 상품, 광고업체명 등에 육안으로는 식별이 어렵고 컴퓨터를 통해서 해독이 가능한 디지털 워터마크(watermark)를 삽입하여 이를 PC용 디지털 카메라 또는 이미지 스캐너 등과 같은 장비로 읽어들여 해독한 후 그에 대한 상세 정보를 제공하는 웹사이트의 검색엔진을 통해 검색, 실시간 링크 등을 자동으로 수행하도록 하는 오프라인 매체와 온라인 매체간의 정보접속방법 및 장치를 구현하는 것이다. 
     상기 목적을 달성하기 위한 본 발명은 오프라인 잡지에 작성 게재된 색인목록을 잡지사별로 분류하여 정보제공 서버와 연결된 데이터 베이스에 구축한 상태에서, 사용자가 인터넷망과 접속하여 정보제공 서버의 사이트에 입장하는 단계와, 상기 정보제공 사이트에서 해당 잡지사를 선택하고 분류 디렉토리로 이동하는 단계와, 서버 사이트에서 분류 제시된 정보에 대하여 검색여부를 확인하는 단계와, 검색을 행할 경우 검색어를 입력하는 단계와, 입력된 검색어는 검색 엔진에 의해 데이터 베이스로부터 해당 정보를 추출하는 단계와, 해당 정보가 데이터 베이스에 있으면 검색정보를 사용자에게 보여주고 종료하는 단계와, 만약 해당정보가 존재하고 있지 않으면 검색엔진은 잡지사 웹사이트들을 검색하여 정보가 있으면 검색정보를 보여주고 없으면 메시지를 출력하는 단계와, 사용자가 검색을 수행하지 않고 링크 서비스를 원하는지를 판단하는 단계와, 링크클릭 하여 링크 페이지를 호출하고, 해당 정보를 사용자에게 보여주는 단계로 이루어짐을 특징으로 한다.
Patent KR-20010049513-A (KR)
Inventor: CHAKRAVARTI SHRIKAR
IPC: C01B32/50
Filed: 2000-06-09
Abstract: PURPOSE: A process of recovering carbon dioxide by absorption of the carbon dioxide from lean carbon dioxide sources such as flue gases from combustion sources and the subsequent separation and recovery of the carbon dioxide from the recovery solvent is provided. CONSTITUTION: The process for recovering carbon dioxide comprises the steps of (i) passing feed gas comprising carbon dioxide at a partial pressure of 10 psia or less in mass transfer contact with recovery solvent comprising water, from 5 to 35 weight percent of at least one fast reaction rate amine such as diethanolamine, and from 5 to 50 weight percent of at least one slow reaction rate amine such as methyldiethanolamine; (ii) passing carbon dioxide from the feed gas to the recovery solvent to produce carbon dioxide depleted gas and carbon dioxide loaded recovery solvent; (iii) separating carbon dioxide from the carbon dioxide loaded recovery solvent to produce carbon dioxide rich fluid; and (iv) recovering carbon dioxide rich fluid as product carbon dioxide.
Patent KR-20010049653-A (KR)
Inventor: UEDA HIDEFUMI
IPC: C22C12/00
Filed: 2000-06-28
Abstract: PURPOSE: To suppress the deterioration of soldering in consequence of volatilization and the deterioration of workability by odors and to suppress the shortening of life by incorporating the acid anhydride obtained by the dehydration reaction of aliphatic carboxylic acid specified in carbon atoms into a flux containing an activator. CONSTITUTION: The solder paste composed of the flux containing at least the activator and solder powder is prepared by incorporating the acid anhydride obtained by the dehydration reaction of the aliphatic carboxylic acid of C <= 7 in the carbon atoms into the flux. The acid anhydride functions as the activator. The acid anhydride has a structure (CH3(CH2)nCO)2O, where n=0 to 2. An acetic anhydride is preferably incorporated as the acetic anhydride at 0.5 to 3.0 wt.% into the flux. The solder paste containing the acid anhydride is a stable paste free from a change in performance at the time of preservation (4 to 10 deg.C ) and room temperature at the time of use. the solder paste has good characteristics in both of initial solderability and when the paste is rested after printing.
Patent KR-20020002019-A (KR)
Inventor: LEE HYEON U
IPC: G11C29/00
Filed: 2000-06-29
Abstract: PURPOSE: A fuse circuit of a semiconductor memory device is provided, which determines whether a call is replaced by judging whether the cell during a test is repaired. CONSTITUTION: The fuse circuit(200) comprises a repair fuse part(210) determining whether a memory cell is repaired by judging the cutting of a fuse, and a test fuse part(220) being connected with the repair fuse part and outputting a signal to the external according to the repair of the memory cell. The test fuse part comprises a PMOS transistor(P3) whose gate is connected to a gate of a PMOS transistor(P1) and source is connected to a power supply, and a test fuse(F0) connected to a drain of the PMOS transistor(P3), and an NMOS transistor(N0) whose drain is connected to the fuse and a source is grounded. An inverter(I2) is connected to the gate of the PMOS transistor(P2) and an inverter(I3) inverts an output of a NOR gate(NR1). And a transfer transistor(T1) transfers an output of the NOR gate and an output of the inverter(I3) to an output pad(PAD).
Patent KR-20010007718-A (KR)
Inventor: HONG WAN GI
Filed: 2000-06-29
Abstract: PURPOSE: An agency system for an online insurance product is provided to allow a customer to select a desired insurance adviser via an online network, and to implement the answer to the request via the online network. CONSTITUTION: A customer accesses the internet(12) via a member client server(10). The member client server(10) is a computer in which a browser is installed. The internet(12) is connected to the servers(16,17,18) for each insurance company and to an insurance mediating server(14). The servers(16,17,18) include a home page operating server and a mail server. An insurance adviser group(20) is comprised of the personal IDs of the mail server to which the insurance advisers join in order to send and receive an e-mail. The insurance mediating server(14) includes a database in which the IDs of the insurance advisers are stored so as to send a question document and receive an answer document.
Patent KR-20020002966-A (KR)
Title: Projection Lens System of Liquid Crystal Display Projector
Inventor: NA MAN HO
IPC: H04N5/74
Filed: 2000-06-30
Abstract: PURPOSE: A projection lens system of a liquid crystal projector is provided to decrease the thickness of the liquid crystal projector system and prevents deterioration in definition due to focus discordance. CONSTITUTION: A projection lens system(30) of a liquid crystal projector includes a plurality of lenses and an optical path converter for converting optical paths among the lenses. The lenses are constructed of the first lens group located at the side into which a beam is inputted and the second group placed at the side from which the beam is output. The optical path converter is a total-reflection mirror(32) for total-reflecting an incident light from the first lens group. The projection lens system further has a position controller for controlling the positions of the first and second lens groups on their optical axes.
Patent KR-20000058938-A (KR)
Inventor: LEE TAE SEONG
IPC: C02F1/78
Filed: 2000-07-06
Abstract: PURPOSE: A high concentration ozone generator is provided, which is characterized in that a horizontal part(33) and a vertical part(31) of an interior electrode are connected like an unevenness in succession to raise efficiency of radiant heat, compared with conventional ozone generator. CONSTITUTION: The interior electrode, which is shaped like an unevenness in succession by connection of the horizontal part(33) and the vertical part(31), doesn't disturb flow of return air. So, efficiency of radiant heat is raised, therefore, temperature of interior falls to 60°C at least. Surface of an exterior electrode(30) is coated by anodization treatment, so, efficiency of radiant heat is raise to 30% or more. When several high concentration ozone generators are connected in parallel, amount of ozone generation is increased exceedingly. A negative ion generator(72) is installed at the latter part of the ozone generator(22a), so, formation of hydroxyl radical is promoted.
Patent KR-20010015333-A (KR)
Title: An active matrix type liquid crystal display apparatus
Inventor: NAKANO AKIRA
IPC: G02F1/1343
Filed: 2000-07-14
Abstract: PURPOSE: Disclosed is a liquid crystal display device capable of preventing the occurrence of flickering even if the same potential is applied to a counter electrode without dividing counter electrodes in the main- and sub-display areas different in the size of pixel area. CONSTITUTION: On the surface of a TFT array substrate, scanning lines(1) and signal lines(19) cross each other in a matrix shape. In the neighborhood thereof, TFTs having gate electrodes connected with the scanning lines, pixel electrodes and capacitance electrodes forming storage capacitance across the scanning lines are formed. On a TFT array substrate, main display areas(30) having a same pixel area enclosed by the scanning lines(1) and the signal lines(19), sub-display areas(31) having pixel areas differing in size from that one are formed. On a counter substrate, a counter electrode is formed. When the ratio of the shortest distance Db between each pixel electrode and the scanning line(1), the gate electrode to the maximum distance d between the counter surfaces of the substrates is defined as more than(1) the occurrence of flickering can be prevented.
Patent KR-20020017043-A (KR)
Title: Fabrication method of polycrystalline silicon thin film using a solid phase silicon in metal alloys and polycrystalline silicon thin film using same method
Inventor: AHN BYEONG TAE
IPC: H01L21/20
Filed: 2000-08-28
Abstract: PURPOSE: A method for fabricating a polysilicon film using a silicon included in a metal and a polysilicon film thereof are provided to form a polysilicon film by separating a single crystalline silicon from a metal including silicon. CONSTITUTION: A metal including a silicon is deposited on a glass substrate or a silicon oxide by using a normal deposition method. A thermal process is performed. A cooling process is performed after the thermal process is performed. A single crystalline silicon is extracted from the metal including the silicon. The remaining metal except for the single crystalline silicon is removed therefrom. The single crystalline silicon as an amorphous silicon is deposited on the glass substrate or the silicon oxide. The thermal process for the amorphous silicon is performed. The metal including the silicon is mainly one of Al, Au, and Cu.
Patent KR-20000072432-A (KR)
Inventor: PARK HYUNG SOON
Filed: 2000-09-04
Abstract: PURPOSE: A real estate or movable property transaction method is provided to let upload moving pictures of real estates or movable properties over a network so that it can offer precise information to real estate or movable property demanders. CONSTITUTION: A real estate or movable property transaction method comprises the steps of real estate or movable property sellers accessing a transaction service web site(S11), the sellers requesting taking a moving picture(S12), the sellers inputting personal or company profiles via a network(S13), the service provider taking the moving picture on the requested real estate or movables(S14), editing the taken moving picture and uploading it over the transaction service site(S15), demanders accessing the service site and browsing the moving picture(S16), the demanders requesting a purchase of the real estate or the movables(S17), the service site checking if the real estate or the movables is transacted between them(S18) and erasing the moving picture in the case that the real estate or the movables is transacted between them(S19).
Patent KR-20020021921-A (KR)
Inventor: CHO MIN CHEOL
IPC: C01B13/02
Filed: 2000-09-18
Abstract: PURPOSE: A device for sensing pressure leakage in an oxygen generator is provided to improve reliability of operation of the oxygen generator by installing a pressure leakage sensor which is structured so that pressure leakage is accurately sensed, and installation cost is low on a pipe line which is an air channel of the oxygen generator. CONSTITUTION: In an oxygen generator which discharges the separated oxygen into a user by flowing external air into the generator using an air pump and pressurizing the external air so as to adsorb nitrogen, thereby separating oxygen from the nitrogen, the device for sensing pressure leakage(600) in an oxygen generator comprises a hollow body(610) which is vertically connected onto the pipe line(25) connecting the air pump to an oxygen separation device; a flexible diaphragm(620) which is sealingly installed along the inner circumferential surface of the body at the lower part inside the body, and which is extended or contracted by air pressure flowing along the pipe line; an electrolyte solution(L) which is filled to a certain water head in the upper part of the diaphragm; a plurality of electrode rods(631-634) each of which are installed at the upper part of the body at different elevations so that they are dipped into the electrolyte solution, and an electric current is flown into the solution depending on a water head of the electrolyte solution that is changed by the vertical vibration of the diaphragm; and light emitting diodes(A-C) which are connected to the electrode rods so as to visibly transmit flowing state of current to a user.
Patent KR-20010050539-A (KR)
Inventor: LAUDENBACH THOMAS
IPC: B60R5/04
Filed: 2000-09-20
Abstract: PURPOSE: A protecting device for automobile interior is provided for guaranteeing the perfect and safe motion of protective structure by a simple means even in case of failure. CONSTITUTION: In a protecting device with protective structure, the protective structure is spread in almost flat shape in a protective position, and installed to be driven between at least two positions by a drive mechanism and further connected to at least one guide element mountable by a conveying means of the drive mechanism using at least one connecting member. At least one connecting member is provided with at least one capture element acting crosswise in the moving direction of the connecting member to capture, mount or release the guide element by restricted mounting force in the movement of the connecting member.
Patent KR-20010096482-A (KR)
Title: optical system for high resolving power
Inventor: KIM SEONG TAE
IPC: G02B9/00
Filed: 2000-09-25
Abstract: PURPOSE: An optic system for high resolution is provided, which is appropriate to a CCD(Charge Coupled Device) above 1500000 pixel and realizes the high resolution with minimum number, and the brightness of its lens Fno is above 2.8. CONSTITUTION: The optic system comprises the first lens group(10) having a negative refractive index and the second lens group(20) having a positive refractive index arranged on the same optic axis in sequence from an object. The first lens group comprises the first lens(101) of convex meniscus type having a negative refractive index, and the second lens(102) of convex meniscus type having a negative refractive index and the third lens(103) being convex and having a positive refractive index. The second lens group comprises the fourth lens(201) whose both sides are concave and having a negative refractive index, and the fifth lens(202) whose both sides are convex and having a positive refractive index and the sixth lens(203) whose both sides are convex and having a positive refractive index. A diaphragm(A) is installed between the first lens group and the second lens group, and an optical low pass filter(F1) is installed on the sixth lens of the second lens group.
Patent KR-20010067241-A (KR)
Title: Isolation Transformers
Inventor: YAGASAKI AKIHIKO
IPC: H01F27/32
Filed: 2000-09-27
Abstract: PURPOSE: To provide a higher reliable impairment wave blocking transformer by keeping a large noise attenuation rate in high frequency bands exceeding several MHz and sufficiently suppressing the amplitude of an irregular saw-tooth wave including various peaks and bottoms in the characteristic curve thereof. CONSTITUTION: The impairment wave blocking transformer comprises a multilayer primary coil 1 having multiple number of turns by laying coil layers, formed by winding an insulation coated copper wire 5 spirally, sandwiching a short circuit ring 4 of conductive thin film having a wide surface area, a multilayer secondary coil 2 having multiple number of turns by laying coil layers, formed by winding the insulation coated copper wire 5 spirally, while sandwiching a short circuit ring 4 of conductive thin film having a wide surface area, and a core foaming a magnetic path between the primary and secondary 1, 2. The short circuit ring 4 employs a conductive thin film having plain view similar to that of the coil layer and thickness equal to or thinner than the skin depth of an induction current generated by skin effect in a high frequency region where the resonance is suppressed.
Patent KR-20020025309-A (KR)
Title: Emulsion type-cosmetic composition containing liquid crystal having high moisturizing nature
Inventor: CHO JIN HUN
IPC: A61Q19/00
Filed: 2000-09-28
Abstract: PURPOSE: Provided is an emulsion type-cosmetic composition containing liquid crystal having high moisturizing activity. Therefore it easily forms liquid crystal, has long-term stability and improved moisturizing activity, and improves psoriasis and atopic diseases. CONSTITUTION: The composition is characterized by containing 1-10 wt.% of nonionic surfactant, 5-23 wt.% of crystal liquid forming agent, 1-10 wt.% of crystal liquid fortifier, 1-20 wt.% of crystal liquid regulator and 0.0-10 wt.% of active ingredient for skin care, wherein the crystal liquid forming agent is selected from ceramide, cholesterol or its derivative, and a mixture of higher fatty alcohol.
Patent KR-20010007834-A (KR)
Inventor: JUNG GYU YOUNG
IPC: G02B3/12
Filed: 2000-10-05
Abstract: PURPOSE: A concave-convex variable type lens structure is provided to widely used to various optical device, and to effectively used to a study about a lens principle. CONSTITUTION: A plane lens(4') is installed in a top of an upper frame(1), and another plane lens(4) is installed in a bottom of a lower frame(2). A flexible transparent film(3) is disposed in the interior of the upper frame(1). A transparent liquid(5) is charged into a space defined by the upper frame and the lower frame so that the transparent liquid have the continuity with the plane lenses and the transparent film. By adjusting a pressure of the transparent liquid, it is possible to adjust a pressure to be applied to the transparent film. Also, the pressure adjustment of the transparent liquid is artificially achieved by adjusting a volume of a transparent liquid charging space or by adjusting an injection amount of the transparent liquid. Since a shape of the transparent film is smoothly adjusted to a convex shape or a concave shape, it is possible to change a lens to a convex lens or concave lens using single lens structure such as the transparent film.