# US 2020/0400786 A1 · Limited reflection type sensor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0400786 A1 - Document ID: US20200400786A1 - Status: Published application - Kind: A1 - Application number: 16/979,222 - Filed: 2019-01-21 - Published: 2020-12-24 - Earliest claimed: 2018-03-13 - Assignees: OMRON Corporation - Applicants: OMRON Corporation - Inventors: Naoya KAKIMOTO; Jun NAKAJIMA; Asuka TADA - Web page: https://patentgrep.com/patent/US20200400786A1 ## CPC - G01S 7/4813: {Housing arrangements} - G01S 17/04: Systems determining the presence of a target - G01V 8/20: using multiple transmitters or receivers - H01H 35/00: Switches operated by change of a physical condition (operated by change of magnetic or electric field H01H36/00; thermally-actuated switches H01H37/00) - H05K 5/0221: {Locks; Latches} - H05K 5/0247: {Electrical details of casings, e.g. terminals, passages for cables or wiring} - H05K 5/03: Covers - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - G01V: GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS (means for indicating the location of accidentally buried, e.g. snow-buried, persons A63B29/02) - H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A limited reflection type sensor which irradiates exit light from a light emitting unit toward an object sensing region through an exit light lens and receives, at a light receiving unit, reflected light from an object existing in the object sensing region through a reflected light lens, may include a casing including a latching portion formed on a side surface and a first opening facing the object sensing region, the casing accommodating the light emitting unit and the light receiving unit; and a lens part including a light incident/exit part formed integrally with the exit light lens and the reflected light lens, and a side surface covering part in which an end of the light incident/exit part is extended along the side surface, in which the lens part covers the first opening with the light incident/exit part and the side surface covering part is latched by the latching portion. ## Claims ### Claim 1 A limited reflection type sensor which irradiates exit light from a light emitting unit toward an object sensing region through an exit light lens and receives, at a light receiving unit, reflected light from an object existing in the object sensing region through a reflected light lens, the limited reflection type sensor comprising: a casing comprising a latching portion formed on a side surface and a first opening facing the object sensing region, the casing accommodating the light emitting unit and the light receiving unit; and a lens part comprising a light incident/exit part formed integrally with the exit light lens and the reflected light lens, and a side surface covering part in which an end of the light incident/exit part is extended along the side surface, wherein the lens part covers the first opening with the light incident/exit part, and the side surface covering part is latched by the latching portion. ### Claim 2 (depends on 1) The limited reflection type sensor according to claim 1, wherein the latching portion has a snap-fit structure in which a latching pawl is formed at a tip of an elastic piece, and the latching pawl is fitted into a latching opening formed on the side surface covering part. ### Claim 3 (depends on 1) The limited reflection type sensor according to claim 1, wherein a guide groove guiding the side surface covering part is formed on the side surface. ### Claim 4 (depends on 1) The limited reflection type sensor according to claim 1, wherein the latching portion latches the side surface covering part at a position closer to the light incident/exit part relative to half in an extension direction of the side surface covering part. ### Claim 5 (depends on 1) The limited reflection type sensor according to claim 1, wherein the first opening comprises a sealing groove inside, the sealing groove being formed along a longitudinal direction of the casing, the lens part comprises a sealing projection having a shape corresponding to the sealing groove formed on the first opening side, and the sealing groove and the sealing projection abut against each other. ### Claim 6 (depends on 1) The limited reflection type sensor according to claim 1, wherein the casing comprises a second opening on a side opposite to the first opening, and the limited reflection type sensor further comprises: a mounting substrate accommodated in the casing with the light emitting unit and the light receiving unit mounted thereon; and a cover latched to the casing and covering the second opening. ### Claim 7 (depends on 6) The limited reflection type sensor according to claim 6, wherein a connector for external electrical connection is mounted on the mounting substrate, and the connector is exposed from a third opening formed on another side surface of the casing. ### Claim 8 (depends on 6) The limited reflection type sensor according to claim 6, wherein a connector for external electrical connection is mounted on the mounting substrate, and the connector is exposed from a fourth opening formed on a bottom surface of the cover. ### Claim 9 (depends on 2) The limited reflection type sensor according to claim 2, wherein a guide groove guiding the side surface covering part is formed on the side surface. ### Claim 10 (depends on 2) The limited reflection type sensor according to claim 2, wherein the latching portion latches the side surface covering part at a position closer to the light incident/exit part relative to half in an extension direction of the side surface covering part. ### Claim 11 (depends on 2) The limited reflection type sensor according to claim 2, wherein the first opening comprises a sealing groove inside, the sealing groove being formed along a longitudinal direction of the casing, the lens part comprises a sealing projection having a shape corresponding to the sealing groove formed on the first opening side, and the sealing groove and the sealing projection abut against each other. ### Claim 12 (depends on 2) The limited reflection type sensor according to claim 2, wherein the casing comprises a second opening on a side opposite to the first opening, and the limited reflection type sensor further comprises: a mounting substrate accommodated in the casing with the light emitting unit and the light receiving unit mounted thereon; and a cover latched to the casing and covering the second opening. ### Claim 13 (depends on 12) The limited reflection type sensor according to claim 12, wherein a connector for external electrical connection is mounted on the mounting substrate, and the connector is exposed from a third opening formed on another side surface of the casing. ### Claim 14 (depends on 12) The limited reflection type sensor according to claim 12, wherein a connector for external electrical connection is mounted on the mounting substrate, and the connector is exposed from a fourth opening formed on a bottom surface of the cover. ### Claim 15 (depends on 3) The limited reflection type sensor according to claim 3, wherein the latching portion latches the side surface covering part at a position closer to the light incident/exit part relative to half in an extension direction of the side surface covering part. ### Claim 16 (depends on 3) The limited reflection type sensor according to claim 3, wherein the first opening comprises a sealing groove inside, the sealing groove being formed along a longitudinal direction of the casing, the lens part comprises a sealing projection having a shape corresponding to the sealing groove formed on the first opening side, and the sealing groove and the sealing projection abut against each other. ### Claim 17 (depends on 3) The limited reflection type sensor according to claim 3, wherein the casing comprises a second opening on a side opposite to the first opening, and the limited reflection type sensor further comprises: a mounting substrate accommodated in the casing with the light emitting unit and the light receiving unit mounted thereon; and a cover latched to the casing and covering the second opening. ### Claim 18 (depends on 17) The limited reflection type sensor according to claim 17, wherein a connector for external electrical connection is mounted on the mounting substrate, and the connector is exposed from a third opening formed on another side surface of the casing. ### Claim 19 (depends on 17) The limited reflection type sensor according to claim 17, wherein a connector for external electrical connection is mounted on the mounting substrate, and the connector is exposed from a fourth opening formed on a bottom surface of the cover.