The national standard of People's Republic of China (PRC), Building Lighting Design Standard (GB 50034-2004), stipulates the general illumination standard values of newly built, rebuilt and expanded residential, public and industrial buildings.

Room (place) reference plane and its high illuminance standard value.

Living room of residential building (general activity) 0.75m water level 100

The living room (writing and reading) of residential building is 0.75m, and the horizontal plane is 300 m, so mixed lighting should be adopted.

Dining room in residential building 0.75m table top 150

The general reading room of the library is 0.75m, and the water level is 300.

Office building general office 0.75m horizontal plane 300

Comprehensive supermarket business hall 0.75m horizontal plane 300

Hospital waiting room, registration hall 0.75m horizontal plane 200.

School classroom desktop 300

School classroom blackboard surface 500

Public corridors in public places, 50 floors of mobile areas.

Escalator floor in public places 150

Rough machining of industrial construction machinery 0.75m horizontal plane 200

General machining tolerance of industrial construction machinery ≥0. 1mm 0.75m horizontal plane 300 shall be provided with local lighting.

Precision machining tolerance of industrial construction machinery

When one or more of the following conditions are met, the illuminance of the working face or datum plane can be increased by one level according to the standard value of the degree.

1 When the distance from the eyes to the recognized object is greater than 5 (X) nun in the fine workplace with high visual requirements;

2. Long-term intense visual work has adverse effects on visual organs;

3. When it is difficult to identify a moving object due to short identification time;

4 when visual work has an important impact on operational safety;

5 When the brightness contrast of the recognition object is less than 0.3;

6. When the operation accuracy is very high, the error will cause great losses;

7 when the visual ability is lower than the normal ability;

8 when the building grade and functional requirements are high.

When one or more of the following conditions are met, the illuminance of the working face or datum plane can be reduced by one level according to the standard value of the degree.

1 when working for a short time;

2 when the accuracy or speed of operation is irrelevant;

3 when the building level and functional requirements are low.

Generally, compared with the standard illuminance value, the design illuminance value may have a deviation of-10%-+ 10%.