2007, projection screens for use in uncontrolled lighting

Projection Screens for Use in Uncontrolled Lighting

Projection Summit 2007, Session 4June 18, 2007

Bright View Microstructure Platform Technology

Human Hair

Capability to produce designs (optical microstructures) that no one else can Very precisely, over very large areas Enables new, higher performance products

0.1mm

1mm

Bright View Products

Product development in all major display technologies

Plasma

Projection

LCD

OLED

New classes of reduced-cost projectors means more and more projectors are used in1. More places with uncontrolled lighting

2. Portable applications for business and recreation

– Conventional, vinyl-based front projection screens only work in dark rooms

– Recent advances in fixed screen technology offer some improvement in lighted rooms, but

Are not portable

Mis-priced for new markets

Are not a mass market solution for projection screens in lighted rooms

New projectors require new kinds of screensHigh gain

Ambient rejection

Portable

Lower cost

Problems & Opportunities with Projectors

Objective Figures of Merit for Front Projection Screens

Gain Dimensionless ratio of the measured luminance of the screen material (numerator) and a white diffuse standard (denominator)

Vertical ½ Angle

The angle where the initial signal has declined to 50% of its’ original on-axis value

Horizontal ½ Angle

The angle where the initial signal has declined to 50% of its’ original on-axis value

Diffuse Reflectance – Source

This ratio shows us how efficiently the screen distributes the projected image back into ambient surround. This dimensionless ratio of a luminance signal of the projection screen (numerator) divided by a luminance signal of a white standard (denominator).

Diffuse Reflectance – Ambient

This ratio tells us how efficiently the screen distributes the ambient illumination back to the projection screen viewer. The dimensionless ratio of illuminance signal of the projection screen (numerator) divided by the illuminance signal of a white standard (denominator)

Ambient Rejection Ratio

This ratio of the previous two measurements (Diffuse Source/Diffuse Ambient) gives a convenient figure of merit of how well the screen rejects ambient illumination.

Why High Gain Screens Matter

Gain = 1 Gain = 3Screen

DiagonalScreen

Diagonal(4:3)" 25 50 100 500 1000 1500 (4:3)" 25 50 100 500 1000 1500

20 64.24 128.48 256.97 1284.85 2569.69 3854.54 20 192.73 385.45 770.91 3854.54 7709.08 11563.6230 28.55 57.10 114.21 571.04 1142.09 1713.13 30 85.66 171.31 342.63 1713.13 3426.26 5139.3940 16.06 32.12 64.24 321.21 642.42 963.64 40 48.18 96.36 192.73 963.64 1927.27 2890.9150 10.28 20.56 41.12 205.58 411.15 616.73 50 30.84 61.67 123.35 616.73 1233.45 1850.1860 7.14 14.28 28.55 142.76 285.52 428.28 60 21.41 42.83 85.66 428.28 856.56 1284.8570 5.24 10.49 20.98 104.89 209.77 314.66 70 15.73 31.47 62.93 314.66 629.31 943.9780 4.02 8.03 16.06 80.30 160.61 240.91 80 12.05 24.09 48.18 240.91 481.82 722.7390 3.17 6.34 12.69 63.45 126.90 190.35 90 9.52 19.03 38.07 190.35 380.70 571.04

100 2.57 5.14 10.28 51.39 102.79 154.18 100 7.71 15.42 30.84 154.18 308.36 462.54Gain = 5 Gain = 7Screen

DiagonalScreen

Diagonal(4:3)" 25 50 100 500 1000 1500 (4:3)" 25 50 100 500 1000 1500

20 321.21 642.42 1284.85 6424.24 12848.47 19272.71 20 449.70 899.39 1798.79 8993.93 17987.86 26981.7930 142.76 285.52 571.04 2855.22 5710.43 8565.65 30 199.87 399.73 799.46 3997.30 7994.60 11991.9140 80.30 160.61 321.21 1606.06 3212.12 4818.18 40 112.42 224.85 449.70 2248.48 4496.97 6745.4550 51.39 102.79 205.58 1027.88 2055.76 3083.63 50 71.95 143.90 287.81 1439.03 2878.06 4317.0960 35.69 71.38 142.76 713.80 1427.61 2141.41 60 49.97 99.93 199.87 999.33 1998.65 2997.9870 26.22 52.44 104.89 524.43 1048.85 1573.28 70 36.71 73.42 146.84 734.20 1468.40 2202.6080 20.08 40.15 80.30 401.51 803.03 1204.54 80 28.11 56.21 112.42 562.12 1124.24 1686.3690 15.86 31.72 63.45 317.25 634.49 951.74 90 22.21 44.41 88.83 444.14 888.29 1332.43

100 12.85 25.70 51.39 256.97 513.94 770.91 100 17.99 35.98 71.95 359.76 719.51 1079.27

Projector Output (Øv - Lumens) Projector Output (Øv - Lumens)

Projector Output (Øv) Projector Output (Øv - Lumens)

Øv → Εv → Lv

lm → lx (lm/m2) → nits (lm/m2/sr)power → power/area → power/area/solid-angle

On-Axis Illuminance of projector/screen-size/gain

Gain Trade-Offs

-2

0

2

4

6

8

10

12

-90 -75 -60 -45 -30 -15 0 15 30 45 60 75 90

Gain=1

Gain=2

Gain=3

Gain=4

Gain=5

Gain=6

Gain=7

Gain=8

Gain=9

Gain=10

One Dimensional Distribution of Luminous Flux at Various Gains

Collimated illumination source, focused to “∞”

Luminance meter

Integrating sphere creating diffused reflection

White diffused reflectance standard with known reflectance (99%)

1) Measure illuminance - reflectance standard (Irs)

3) Obtain Diffuse Reflectance Source DS = Is / Irs

2) Measure illuminance from SUT (Is)

Projection Screen (SUT)

Diffuse Reflectance Source (DS)

Photodetector

Satellite sphere containing 3000KHalogen lamp

diffuser

Integrating sphere creating diffused illumination

Luminance meter

White diffused reflectance standard with known reflectance (99%)

1) Measure illuminance - reflectance standard (Lrs)

3) Obtain Diffuse Reflectance Ambient DA = Ls / Lrs

2) Measure reflection from SUT (Ls)

diffuser

Luminance meter

Projection Screen (SUT)

Diffuse Reflectance Ambient (DA)

Competitive Analysis

For low & mid-luminance projectors in lighted rooms, screens must have high gain and an Ambient Rejection Ratio (ARR) above 1.3

Vertical Diffuse Diffuse DS/DACompany Measured Published Measured Published Measured Reflectance Reflectance [ARR]

Product Gain Gain 1/2 Angle 1/2 Angle 1/2 Angle Source Ambient (500Lux)

BVT SHGS Prototype 12/2006 8.14 19 8.5 0.53 0.27 1.99? 30" 4:3 Folding Screen 4.38 23 13 0.78 0.43 1.83BVT HGS Prototype 2 11/2006 4.43 30 15 0.61 0.42 1.45BVT SHGS Prototype 4/2007 6.83 19 13 0.69 0.50 1.38Co. D SN 2.50 14 13 0.49 0.36 1.36BVT HGS Prototype 3 12/2006 4.35 24 12 0.64 0.51 1.27Co. Dr High Contrast Gray 0.71 0.80 55 - 0.50 0.42 1.18Co. Dr HiDef Gray 0.82 1.00 49 - 0.53 0.45 1.18Co. S F- G3 0.93 1.25 28 28 0.34 0.30 1.13Co. S G-R 0.85 0.92 42 64 0.54 0.49 1.10Co. Da High Contrast Matte White 0.98 1.10 50 50 0.69 0.64 1.09Co. Da CV 1.11 1.30 44 45 0.71 0.67 1.06Co. Dr. M2XXX 1.82 2.20 18 - 0.78 0.75 1.05Co. Da High Contrast CV 0.89 1.10 48 50 0.62 0.59 1.04Co. Dr M1XXX 1.04 1.00 52 - 0.86 0.83 1.03Co. Da Matte White 0.95 1.00 60 60 0.86 0.85 1.00Co. Dr Matte White 0.92 1.00 56 0.80 0.81 0.99Co. V SS 2.31 6.00 28 19 0.74 0.75 0.98

Horizontal

Application Segments - US Front Projection Screen Market

Philips “Lifestyle” Application

Type Diagonal(inches)

Price(Retail)

Price per Ft-Sq.

Home

Cinema

Home

Theater

Conferen

ce Room

Educatio

n

Mobile

Professional

Portable Projection

Fixed Projection Screen 84 -120 $250-$3500 $8.50-$170 ü ü ü ü    

Motorized-Retractable 84-210 $1000-

$6000+ $15-$100+ ü   ü ü    

Manual Retractable 84-210 $70-$2500 $7-$60+   ü ü ü    

Large Portable 50-84 $100-$500 $10-$40    ü-  ü- ü-  ü-  

Small Portable 30-40 $300-$500 $40-$60         ü ü

Where BVT BRIGHTSCREEN Fits

High-growth projector segments need screens designed for new applications

BRIGHTSCREEN FPS serves these segments with– High gain– Good ambient rejection– Portable– Functional, elegant packaging

Philips “Lifestyle” Application

Type

Home

Cinema

Home

Theater

Conferen

ce Room

Educatio

n

Mobile

Professional

Portable Projection

Fixed Projection Screen ü ü ü ü    

Motorized-Retractable ü   ü ü    

Manual Retractable   ü ü ü    

Large Portable    ü-  ü- ü-  ü-  

Small Portable         ü üBV

T

TAR

GE

T

BRIGHTSCREEN FPS Target Segments

0.5 5 50 500 5000 500000

20

40

60

80

100

120

140

160

180Projection Markets By Size & Luminance

Projector Luminance

Scr

een

Dia

go

nal

Home Cinema

Home Theater

Personal Projection

ConferenceRoom

MobileProfessional

Education

BVT-FPS-BRIGHTSCREEN-30

BVT-FPS-BRIGHTSCREEN-50

BVT-FPS-BRIGHTSCREEN-70

Leveraging Bright View Technologies’Proprietary & patented microlens technology - create screen structures w/tunable gain & viewing angle

Proprietary materials expertise to integrate ambient-rejecting materials

Packaging to create elegant, portable front projection screens

New Screens for New Markets

BVT-FPS-BRIGHTSCREEN-30– Open - 30”D, closed - 15X2X1”– Targeting Portable, ~100 Lumen, LED/DLP Projectors– Standard Configuration: BVT SuperHighGain (SHG) Screen– Optional Configuration: BVT HighGain (HG) Screen

BVT-FPS-BRIGHTSCREEN-50– Open - 50”D, closed - 24X3X1.5” – Targeting combined markets: business meeting,

home movie viewing/small-group gaming– Standard Configuration: BVT HighGain (HG) Screen– Optional Configuration: BVT SuperHighGain (SHG) Screen

BVT-FPS-BRIGHTSCREEN-70– Open - 70”D, closed - 48X4X2”– Targeting Portable Home Theater Projectors– Standard Configuration: BVT HighGain (HG) Screen– Optional Configuration: BVT SuperHighGain (SHG) Screen

Target Specifications

Contact:Don Hirsh, Business Development Manager

Bright View Technologies, Inc.

5151 McCrimmon Parkway, Ste 200

Morrisville, NC 27560 USA

www.brightviewtechnologies.com

+1 (919) 228-4370 X360

dhirsh@brightviewtechnologies.com