Luminous intensity Sample Clauses

The 'Luminous intensity' clause defines the required brightness level that a light source or lighting product must emit, typically measured in candelas. This clause specifies the minimum or range of luminous intensity values that products must meet to comply with technical or safety standards, and may reference specific testing methods or industry benchmarks. Its core practical function is to ensure that lighting products provide adequate illumination for their intended use, thereby promoting safety, visibility, and regulatory compliance.
Luminous intensity. 4.7.1.1. Filament lamps and gas discharge light sources are exempted from this test. 4.7.1.2. A photometric measurement shall be made after 1 minute of operation with the device at room temperature. The test point to be measured is horizontal 0° vertical 2.5°D. 4.7.1.3. The lamp shall continue operation until photometric stability has occurred. The moment at which the photometry is stable is defined as the point in time at which the variation of the photometric value is less than 3 per cent within any 15-minute period. After stability has occurred, aiming for complete photometry shall be performed in accordance with requirements of the specific device. Photometry at all test points is required for the specific device. 4.7.1.4. Calculate the ratio between the photometric test point values determined in paragraph 4.7.1.2. and the values determined in paragraph 4.7.1.3. above once stability of photometry has been achieved. 4.7.1.5. Apply the ratio calculated in paragraph 4.7.1.4. above to each of the remainder of the test points to create a new photometric table that describes the complete photometry based on 1 minute of operation. 4.7.1.6. The illuminance values measured after one minute and until photometric stability has occurred, shall comply with the minimum and maximum requirements.
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Luminous intensity. 4.3.1.1. A photometric measurement of the device shall be made after 1 minute of operation for the specific function at the test point specified below. For these measurements, the aim can be approximate but must be maintained for before and after ratio measurements. Test points to be measured: Passing-beam: 25R in case of headlamps of classes A, B and D 50V in case of headlamps of classes AS, BS, CS, DS, ES 25RR in case of AFS Driving-beam: H – V Front fog lamps: horizontal 0° vertical 2.5°D 4.3.1.2. The lamp shall continue operation until photometric stability has occurred. The moment at which the photometry is stable is defined as the point in time at which the variation of the photometric value is less than 3 per cent within any 15 minutes period. After stability has occurred, aim for complete photometry shall be performed in accordance with the requirements of the specific device. Photometer the lamp at all test points required for the specific device. 4.3.1.3. Calculate the ratio between the photometric test point value determined in paragraph 4.3.1.1. and the point value determined in paragraph 4.3.1.2. 4.3.1.4. Once stability of photometry has been achieved, apply the ratio calculated above to each of the remainder of the test points to create a new photometric table that describes the complete photometry based on one minute of operation. 4.3.1.5. The luminous intensity values, measured after one minute and after photometric stability has occurred, shall comply with the minimum and maximum requirements.
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Luminous intensity a) Four-lamp type
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