Lighting Design System & its Application by Atikur Rahman

This presentation include all about lighting design and its application in a simple language so that everyone could understand.

1. Lighting Design System & its Application Presented By: Atikur Rahman Department of optometry, RIPANS

2. Lighting Design

3. To aid and facilitate the performance of a visual task. To create an appropriate visual environment i.e. aesthetic appearance. To ensure the safety of people. To provide security for premises. Lighting Design

4. Daylight Factor: Illuminance received at a point on a plane in an anterior expressed as a percentage of the illuminance outdoors. Daylight factor = daylight illuminance at a point within a room / simultaneous illuminance on a horizontal plane outside from an unobstructed sky × 100%. Daylight

5. Average daylight factor = 5% or more = interior is well lit. If between 2 & 5% = use artificial light in addition to daylight. Less than 2% = poorly lit.

6. Generalized lighting Localized lighting Local lighting Artificial Lighting

7. Generalized Lighting

8. Designed to provide an approximate average illuminance over the entire working area. Advantage: allow flexibility of workstation. Disadvantage : energy is wasted. The uniformity of illuminance over the task area should not be less than 0.8% Generalized Lighting

9. Localized Lighting

10. Design to provide the required illuminance on the working surface together with a lower level of illuminance. The difference in illuminance between the task and general areas should be in the ratio of 3:1 or less. Use less energy but may require more maintenance than generalized system. Localized Lighting

11. Two system : To provide the ambient background lighting To provide supplementary lighting at the task. Local Lighting

12. Efficient method of providing high task illuminance, allows flexible, directional lighting for detailed task. Care must be taken when positioning the luminaire s that it does not create vieling reflections or become glare source Best position is to the left o f workstation so reflections will mainly go across the workers line of sight. The task to background illuminance ratio should not be less than 3:1

13. Recommended Levels of Illuminance Area Illuminance (lux) Test room 50 - 300 Consulting room 300 Vision chart 300 Bjerrum screen 100 (maximum) Chair 1000 Operating theatre 10,000 – 50,000

14. Photometric units Luminous flux Illuminance Luminous intensity Luminance Contrast Units of Light

15. Provide protection, support and electrical connection to the lamp it contains. Functions: Redistribute the light from the lamp in preferred directions with. Reduce glare from the source Be acceptable in appearance and make contribution to the décor. Provide support, protection and electrical connection to the lamp Luminaire

16. Obstruction Diffusion Refraction Reflection Methods of lighting control

17. Application

18. Lighting plays a crucial role in enhancing the aesthetics, functionality, and overall ambiance of both indoor and outdoor spaces. In the kitchen, task lighting plays a pivotal role in ensuring efficient food preparation and cooking. Bedrooms often require a blend of ambient and task lighting to create a soothing and tranquil atmosphere for rest and relaxation. Bathrooms present unique challenges due to the need for both functional task lighting for daily grooming routines and flattering ambient lighting for applying makeup or styling hai Application

19. Retail Stores: Retail spaces utilize a combination of general and accent lighting. Offices: In office settings, a balance between general ambient lighting and task lighting is crucial. Restaurants: Restaurants often aim for an inviting atmosphere by incorporating warm ambient lighting with dimmers, creating a cozy and intimate setting. Hotels: Hotels utilize lighting to establish their overall aesthetic and create a welcoming environment for guests.

20. Galleries/Museums: Art galleries and museums rely heavily on accent lighting to enhance exhibits and artwork Hospitals: In healthcare facilities, lighting plays a critical role in providing comfort and supporting medical tasks. Educational Facilities: Schools and universities require adaptable lighting solutions to accommodate various activities such as lectures, presentations, and group work

21. THANK YOU!