Innovative LED Reading Lights | Berryessa Designs

1. Berryessa Designs Mike Ju & Elaine Chang

2. Who We Are • We are a lighting design house and manufacturer with focus on LED based reading lights. • Started in 2009, Base in San Jose, California • Primary production in San Jose • Our mission statement: • Quality Products from Quality Designs

3. Our Primary Market • Reading lights for low vision • Reading lights for people over 40 (Boomers) • Reading lights for university students • Reading lights for hotel rooms • Reading lights for 12 and under

4. 4 Eye Disorders Affecting People Over 40 • Cataract • Glaucoma • Age Related Macular Degeneration • Diabetic Retinopathy Appropriate reading light can help. We are here to help.

5. Customer Needs • Some need more light to read • Some feel light is too bright and glary • Some navigate by the shadow of the light • Some eyes changes color preferences through out the day We build lights to address the needs of our customers through light source, optics, fixtures, and electronics

6. Key Partners in Low Vision • 4 State Government Agencies • Department of Rehab, California • Oregon Commission for the Blind • Montana DPHHS Blind and Low Vision Services • Washington DSB • Universities • UCLA, UC Berkeley • Casey Eye Institute, Portland Oregon • Low Vision Institutes • Braille Institute Southern California • Center for Partially Sighted • Earle Baum Institute • Light House San Francisco

7. Lighting Basics

8. Lights • Light have two primary purposes: • To illuminate • Lighting inside a room or a building • Lighting for reading, writing, craft works etc • To indicate • Signal lights at intersection • Turn signals on an automobile • Bill board lights • Lighted signs

9. Light Fixture • Light Fixture for General Illumination • Light fixture designed to light up an area or a room • Examples: ceiling light, wall sconces, recess lighting, floor lamp, table lamps • Light Fixture for Task Lighting • Light fixture designed for a specific task • Examples: flash light, magnifier lamp, any light with a targeted lighting area

10. Light Fixtures for General Illumination

11. Light Fixtures for Task Lighting

12. A Review on Lighting Technology

13. Popular Lighting Technologies • Incandescent • Fluorescent • Halogen • LED

14. Light Sources Technologies and Their Inventors (1) • Incandescent • Thomas Edison, carbonized sewing thread inside a vacuum bulb • William Coolidge, ductile tungsten bulb • Fluorescent • George Inman, Richard Thayer, Eugene Lemmers, and Willard Roberts developed the first true fluorescent lamp (source edisontechcenter.org)

15. Light Sources Technologies and Their Inventors (2) • Halogen • First developed by Elmer Fridrich and Emmett Wiley • LED • James Biard and Gary Pittman, 1st Patent on LED 1966 • Shuji Nakamura, 1st bright blue GaN LED that we use today. (source edisontechcenter.org)

16. Why is LED better than Other Technologies? • Highest efficacy of the popular technologies • 80 to 120 Lumens per Watt • Lower operating voltage, safety • Typically DC voltage < 40 volts • No UV • Compact Fluorescent and Halogen Technologies emit UV

17. Key words in Lighting

18. Typical Specification of a Bulb Base typically E26 or E27, E  Edison, 2626mm, 2727mm A19 shape is designed for 360 degree emination.

19. Key Words in Lighting • Efficacy • Lumens • Lux • Correlated Color Temperature CCT

20. Efficacy – Definition • In this case, we are talking about luminous efficacy. • Efficacy is an efficiency parameter to measure how well does the light source convert electrical energy into light. • It is expressed in volume of light / electrical power supplied • Metric Unit is expressed in Lumens / Watt

21. Efficacy Calculation Example Total Output is 630 Lumens, Power Consumption is 60 Watts. Efficacy for this bulb is 10 Lumens/Watt

22. Typical Efficacy of Different Light Sources Efficacy is a good way for us to evaluate lighting technologies. • Incandescent – 10 to 14.3 lm/W • Halogen – 10 to 14.4 lm/W • CFL – 50~70 lm/W • High Efficacy LED – 80~100 lm/W, and improving .

23. What Does It Mean in Terms of Dollars and Sense? • Typical 60W (14.3 Lumens/Watt) incandescent light bulb will cost you $2.25 based on $0.1559 per KWH @ 8 hours per day for 30 days (1 month) • A 13W (70 Lumens/Watt) CFL bulb will cost $0.49 to operate in the same period. • A 12W LED light (80 Lumens/Watt) will cost $0.45.

24. Why do we recommend LED not CFL? • Safety Concern • CFL runs on AC. LED runs on DC in most cases. • Human skin protects from voltage up to about 60V. If it is AC, divide 60V by 2 or less than 30VAC. • Hazardous Material Concern • CFL contain traces of mercury. Need proper disposal of the spent bulb. • UV Concerns • CFL emits slight amount of UV at 365nm due to its mercury vapor.

25. Lumens – Definition • Lumens is a measure of total amount of visible light from a light source. • A typical 60W incandescent light bulb can produce 800 Lumens of light • A 13~15W CFL bulb can produce 800 Lumens • Typical 10.5W A19 Shaped LED bulb from Philips or Sylvania produces 800 Lumens

26. Lux - Definition • Lux is a measurement of brightness. It is expressed as Lumens / Surface Area. • It is expressed as Lumens/meter square • Typical brightness of environment • Moonless, overcast night sky 0.0001 lux • Office building 350 to 500 lux • Sunrise or sunset on a clear day 400 lux • Full day light, indirect sun 10000 to 25000 lux

27. Lux vs, Lumens When to use Which Parameter • When buying a light for general illumination purpose, it is best to look at number of Lumens that the light can provide. • When buying a reading lamp, it is best to look at the number of Lux that the light can provide. Be sure to know what distance between the light source and the intended object that the lux is measured.

28. CCT - Definition • CCT stands for correlated color temperature • It is the temperature of an ideal black-body radiator, expressed in the units of degree Kelvin. • White light comes in different shades. • 3000K soft white or warm white • 4000K neutral white • 5000K cool white

29. MacAdams Ellipse & CCTs • 3000K Soft white or Warm white • 4000K Neutral White • 5000K Cool White

30. Which CCT is Best? • Each person has a sweet spot or preference for CCT. Factors depends on heredity, where you grew up, and most important what eye conditions do you have. • It is easier to have individual examine to see what CCT preference by reading materials with lamps with different CCTs.

31. Trends and General Tendencies • Cataract – lower CCT, longer wavelength penetrates matters better • Diabetes – lower CCT with reddish spectrum • Macular Degeneration – varies, depending on your heritage and where you grew up

32. Choose the Right CCT to Improve Contrast Text Text Text • During reading, we look for the transition between the text and the back ground. Improve contrast will improve effort to read. • A light with proper CCT is like a good pair of running shoes. Less effort to read translate to longer reading period.

33. General illumination

34. Importance of Ambient Lighting • Your eyes constantly monitor the amount of light in the surrounding and opens pupil accordingly. • It is important to maintain appropriate ambient light to minimize over-exposure of your retina. • Key take away point is never read watch TV in the dark.

35. Lights Sources In general, lights can be of point source, line source and plane source Examples • Point source - a light bulb • Line source: a light tube • Plane source: a light box or screen made of OLED, LED, fluorescent tubes

36. Create Ambient Lighting via General Illumination • You can use single or multiple light source to fill the room to create ambient lighting. • Track light • Table Lamp • Cove light • Ceiling Light • Floor Lamps • Working together to create ambiance

37. Task Lighting

38. What Makes a Good Reading Light? • CCT – Proper CCT, Everyone is Unique • Brightness – Appropriate Brightness, Dimmer Option • Adjustability – Delivery of Light • Safety – Free from Heat & Electric Shock • Quality – Longevity of Product

39. Why is Berryessa Designs Reading Lamp? • Good thermal management to ensure longevity of LEDs • A family of CCT to choose from • Power management with maximum DC voltage of 24V + short circuit protection. Human skin protects from electro-shock up to 60V. • After sales customer service

40. Our Products

41. Elegance Specifications: 8 High Power LEDs Energy Consumption 10 Watts LED Rated Lifespan 40,000 hours to 70% brightness Color Temperature (Warm White) 2,600K ~ 3,700K Transformer (100V ~ 240V, 50/60Hz) Included – UL/CUL Certified Light Area Oval Finish Color Metallic Silver Height 25” (max), Reach 23” (max), Width 6.75” Material Steel / Plastic Cord Color Black Cord Length 6’ Photometrics (@ Maximum brightness level) 12” Above Desk - 210 fc 20” Above Desk - 100 fc Product Warranty 1 Year

42. Allievo Specifications: 6 High Power LEDs Energy Consumption 10 Watts LED Rated Lifespan 40,000 hours to 70% brightness Color Temperature (Warm White) 2,600K ~ 3,700K Transformer (100V ~ 240V, 50/60Hz) Included – UL/CUL Certified Light Area Oval Finish Color Metallic Nickel Reach 19” Material Aluminum / Plastic Cord Color Black Cord Length 6’ Photometrics (@ Maximum brightness level) 12” Above Desk - 175 fc Product Warranty 1 Year

43. USB Power Station • LED Section • 6 High Power LEDs (Same as Allievo) • Energy Consumption 10 Watts (LED Portion) • LED Rated Lifespan 40,000 hours to 70% brightness • Color Temperature (Warm White) 2,600K ~ 3,700K • Photometrics (@ Maximum brightness level) • 12” Above Desk - 175 fc • USB Charging Section • 4 USB Type A Connection supplying Power Only: 5V, 2A typical • Transformer (100V ~ 240V, 50/60Hz) • Included – UL/CUL Certified • Light Area Oval • Finish Color Options: Metallic Nickel, Black, Graphite • Reach 19” • Material Aluminum / Plastic • Cord Color Black • Cord Length 6’ • Product Warranty 1 Year

44. Junior Classic • LED Section • 6 LEDs • Energy Consumption 8 Watts (LED Portion) • LED Rated Lifespan 30,000 hours to 70% brightness • Color Temperature 3400K , 3700K, 4100K, 4900~5100K • Transformer (100V ~ 240V, 50/60Hz) • Included – UL/CUL Certified • Light Area: Round • Finish Color Options: Chrome • Max Reach 12”, Max Height 17” • Material: Metal • Cord Color Black • Cord Length 6’ • Product Warranty 1 Year

45. Junior Family Classic Flex Gooseneck

46. Floor Lamps Elaine Julia

47. Melinda Fluorescent Lamp • Low Cost • UL Listed Ballast • 27W Fluorescent Light • Available in 2700K, 4100K CCT

48. Magnifier Light • Product Name: Joseph • Magnification: 2X • Light Source: LEDs • CCT Options: 3000K, 4000K, 5000K • Dimmable using in-line insertable dimmer • DC Supply with short circuit protection • Designed for reading, knitting, Sewing, Craft Magnifier Light in Up Right Position

49. Magnifier Light Photos • Maximum reach: 20 inches, 90 degrees bend, from center of the post to middle of the magnifier lens. • 360 degrees rotation around the post • Gooseneck for fine lens positioning 90 Degrees 360 Degrees • 18 LEDs for even distribution of light • Low DC voltage to minimize electro-shock

50. Magnifier Light Photos • One can use this magnifier for visual inspection of small parts. • Place a book or newspaper behind the lens • Knitting or threading needles • Remove splinters from hand • Nail clipping • Head of magnifier light can rotate 360 degrees. • Many degrees of freedom in terms of adjustment to deliver magnified view from arbitrary angles.