# US 12,120,794 B2 · Lighting arrangement with integrated sensing such as light sensing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,120,794 B2 - Document ID: US12120794B2 - Status: Granted - Kind: B2 - Application number: 17/795,800 - Filed: 2021-01-26 - Published: 2023-04-06 - Granted: 2024-10-15 - Earliest claimed: 2020-02-06 - Assignees: Signify Holding B.V. - Applicants: Signify Holding B.V. - Inventors: Theodorus Johannes Petrus Van Den Biggelaar; Anteneh Alemu Abbo; Marco Haverlag; Bernardus Johannes Pronk; Matthias Wendt - Web page: https://patentgrep.com/patent/US12120794B2 ## CPC - H05B 45/12: using optical feedback - H05B 47/11: by determining the brightness or colour temperature of ambient light - G01J 1/4204: {with determination of ambient light (solar light G01J2001/4266)} - G01J 1/44: Electric circuits {(for command of an exposure part G03B7/02)} - H05B 45/14: using electrical feedback from LEDs or from LED modules - H05B 45/37: Converter circuits - Y02B 20/40: Control techniques providing energy savings, e.g. smart controller or presence detection - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - G01J: MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N) - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract A lighting arrangement has a lighting module with a sensor element in parallel with a light source arrangement between module terminals. A measuring system is provided for measuring, at the module terminals, a signal which is dependent on the sensor element when the light source arrangement is turned off. Thus, sensing is integrated into or connected to a lighting module, such as LED module. ## Claims ### Claim 1 A lighting arrangement, comprising: a lighting module, comprising: a terminal arrangement comprising first and second terminals for connection to a lighting driver; a light source arrangement in series between the first and second terminals; and a sensor element in parallel with the light source arrangement and in series between the first and second terminals; a measuring system for measuring, at the terminal arrangement, a signal which is dependent on the sensor element; and an isolating switch in series with the sensor element for disconnecting the sensor element when the light source arrangement is turned on. ### Claim 2 (depends on 1) The lighting arrangement as claimed in claim 1, wherein the measuring system is adapted to monitor the characteristics of a discharge from the light source arrangement through the sensor element when the light source arrangement is turned off. ### Claim 3 (depends on 2) The lighting arrangement as claimed in claim 2, wherein the measuring system comprises a measuring unit and a connection switch for connecting the measuring unit to the terminal arrangement. ### Claim 4 (depends on 1) The lighting arrangement as claimed in claim 1, wherein the measuring system is adapted to measure a discharge voltage over time or a current over time. ### Claim 5 (depends on 1) The lighting arrangement as claimed in claim 1, wherein the sensor element is a light sensitive component comprising: a light dependent resistor; or a phototransistor; or a photodiode with the same polarity between the first and second terminals as the light source arrangement; or a photodiode with an opposite polarity between the first and second terminals as the light source arrangement. ### Claim 6 (depends on 1) The lighting arrangement as claimed in claim 1, wherein the isolating switch is controlled by one or more voltages of the terminal arrangement. ### Claim 7 (depends on 1) The lighting arrangement as claimed in claim 1, wherein the isolating switch comprises: a transistor; or an opto-coupled switch; or a relay. ### Claim 8 (depends on 1) The lighting arrangement as claimed in claim 1, further comprising an amplifier connected to the sensor element and a modulation circuit, such that a modulated amplified sensing signal is provided to the terminal arrangement. ### Claim 9 (depends on 1) The lighting arrangement according to claim 1, wherein the lighting module comprises a sensor circuit in parallel with the light source arrangement, the sensor circuit comprising the sensor element, an amplifier and a modulation circuit for applying a modulated sensing signal to the terminal arrangement; and the measuring system for measuring, at the terminal arrangement, the signal which is dependent on the sensor element from the modulated sensing signal. ### Claim 10 (depends on 9) The lighting arrangement as claimed in claim 9, wherein the modulation circuit comprises a modulation switch for coupling an amplified sensor element signal to the terminal arrangement and a timing circuit for controlling the timing of operation of the modulation switch. ### Claim 11 (depends on 1) The lighting arrangement as claimed in claim 1, wherein the light source arrangement comprises a LED arrangement and the lighting driver comprises a LED driver. ### Claim 12 (depends on 1) A lighting system, comprising: a lighting driver; and a lighting arrangement as claimed in claim 1, wherein an output of the lighting driver is connectable to the terminal arrangement and wherein the measuring system is part of the lighting driver. ### Claim 13 A lighting arrangement, comprising: a lighting module, comprising: a terminal arrangement comprising first and second terminals for connection to a lighting driver; a light source arrangement in series between the first and second terminals; and a sensor element in parallel with the light source arrangement and in series between the first and second terminals; a measuring system for measuring, at the terminal arrangement, a signal which is dependent on the sensor element; wherein the measuring system is adapted to monitor the characteristics of a discharge from the light source arrangement through the sensor element when the light source arrangement is turned off; and wherein the measuring system comprises a measuring unit and a connection switch for connecting the measuring unit to the terminal arrangement. ### Claim 14 (depends on 13) The lighting arrangement as claimed in claim 13, wherein the measuring system is adapted to measure a discharge voltage over time or a current over time. ### Claim 15 (depends on 13) The lighting arrangement as claimed in claim 13, wherein the sensor element is a light sensitive component comprising: a light dependent resistor; or a phototransistor; or a photodiode with the same polarity between the first and second terminals as the light source arrangement; or a photodiode with an opposite polarity between the first and second terminals as the light source arrangement. ### Claim 16 (depends on 13) The lighting arrangement as claimed in claim 13, further comprising an amplifier connected to the sensor element and a modulation circuit, such that a modulated amplified sensing signal is provided to the terminal arrangement. ### Claim 17 (depends on 13) The lighting arrangement according to claim 13, wherein the lighting module comprises a sensor circuit in parallel with the light source arrangement, the sensor circuit comprising the sensor element, an amplifier and a modulation circuit for applying a modulated sensing signal to the terminal arrangement; and the measuring system for measuring, at the terminal arrangement, the signal which is dependent on the sensor element from the modulated sensing signal. ### Claim 18 (depends on 17) The lighting arrangement as claimed in claim 17, wherein the modulation circuit comprises a modulation switch for coupling an amplified sensor element signal to the terminal arrangement and a timing circuit for controlling the timing of operation of the modulation switch. ### Claim 19 (depends on 13) The lighting arrangement as claimed in claim 13, wherein the light source arrangement comprises a LED arrangement and the lighting driver comprises a LED driver.