# US 2016/0259162 A1 · Protective member > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0259162 A1 - Document ID: US20160259162A1 - Status: Published application - Kind: A1 - Application number: 14/889,136 - Filed: 2015-04-07 - Published: 2016-09-08 - Earliest claimed: 2014-07-30 - Assignees: Panasonic Intellectual Property Management Co., Ltd. - Applicants: Panasonic Intellectual Property Management Co., Ltd. - Inventors: YOHEI TAKECHI; HIROTOSHI OIKAZE; YASUHIRO KABETANI; TOMOTAKA FURUTA - Web page: https://patentgrep.com/patent/US20160259162A1 ## CPC - G02B 27/0006: {with means to keep optical surfaces clean, e.g. by preventing or removing dirt, stains, contamination, condensation (G02B1/18 takes precedence; cleaning in general B08B)} - G02B 21/00: Microscopes - G02B 21/02: Objectives - G02B 21/33: Immersion oils {, or microscope systems or objectives for use with immersion fluids} - G11B 7/135: Means for guiding the beam from the source to the record carrier or from the record carrier to the detector - G11B 7/22: Apparatus or processes for the manufacture of optical heads, e.g. assembly - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R) ## Abstract A protective member protects an objective lens. The protective member includes an insertion opening through which an objective lens is configured to be inserted and a main body configured to cover the inserted objective lens. The main body includes a side wall portion connected to the insertion opening and a bottom portion connected to the side wall portion as well as facing the insertion opening, and covers the inserted objective lens with the side wall portion and the bottom portion. The protective member further includes a liquid disposed inside the main body, a sealing film body for sealing the insertion opening and a window arranged in the bottom portion of the main body, through which light transmits. The protective member can simplify the work. ## Claims ### Claim 1 A protective member for protecting an objective lens; comprising: an insertion opening through which the objective lens is configured to be inserted; a main body including a side wall portion connected to the insertion opening and a bottom portion connected to the side wall portion and facing the insertion opening, the main body configured to cover the inserted objective lens with the side wall portion and the bottom portion; a liquid disposed inside the main body; a sealing film body configured to seal the insertion opening; and a light transmittable window arranged in the bottom portion of the main body. ### Claim 2 (depends on 1) The protective member according to claim 1, wherein the insertion opening is provided with a first flange surface provided around the insertion opening, and a second flange surface provided around the insertion opening and arranged closer to the bottom portion than the first flange surface, and the sealing film body is provided in the second flange surface. ### Claim 3 (depends on 1) The protective member according to claim 1, wherein the sealing film body is configured to be broken when the objective lens is inserted through the insertion opening. ### Claim 4 (depends on 1) The protective member according to claim 1, wherein the sealing film body includes a first area and a second area thinner than the first area. ### Claim 5 (depends on 4) The protective member according to claim 4, wherein the sealing film body is configured to be broken from the second area as a starting point when the objective lens is inserted through the insertion opening. ### Claim 6 (depends on 4) The protective member according to claim 4, wherein the second area is arranged radially toward a periphery from a center of the sealing film body. ### Claim 7 (depends on 2) The protective member according to claim 2, wherein the main body is provided with an internal space surrounded by the side wall portion and the bottom portion as well as housing the inserted objective lens, the liquid being disposed within the internal space, and the first flange surface is provided with a groove communicating between the internal space of the main body and an external space when the objective lens is inserted through the insertion opening. ### Claim 8 (depends on 2) The protective member according to claim 2, wherein the main body is provided with an internal space surrounded by the side wall portion and the bottom portion as well as housing the inserted objective lens, the liquid being disposed within the internal space, and a hole communicating between the internal space of the main body and an external space when the objective lens is inserted into the insertion opening is provided between the first flange surface and the second flange surface of the insertion opening. ### Claim 9 (depends on 1) The protective member according to claim 1, wherein the sealing film body has a shape which is concave toward the bottom portion. ### Claim 10 A method for using a protective member, said method comprising: providing a protective member having a main body including an insertion opening, a side wall portion connected to the insertion opening and a bottom portion connected to the side wall portion and facing the insertion opening, the main body further including a liquid disposed therein, a sealing film body configured to seal the insertion opening, and a light transmittable window arranged in the bottom portion; breaking the sealing film body by inserting an objective lens through the insertion opening and covering the inserted objective lens with the side wall portion and the bottom portion; and transmitting light through the light transmittable window arranged in the bottom portion of the main body. ### Claim 11 (depends on 10) The method according to claim 10, wherein the breaking the sealing film body occurs from a second area as a starting point when the objective lens is inserted through the insertion opening, the sealing film body including a first area and a second area thinner than the first area. ### Claim 12 (depends on 10) The method according to claim 10, further comprising: relieving pressure from the main body when the objective lens is inserted through the insertion opening by providing a hole configured to communicate between an internal space of the main body and an external space.