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DS005AKC中文资料

Single-Panel Liquid Crystal Optical Engine for Rear Projectors

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E99942B04

Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.

DS005AKC

Description

The DS005AKC is a single-panel liquid crystal optical engine for use in rear projectors, and is capable of full-color displays without color filters (CF).The DS005AKC employs a square pixel arrangement optimal for data projector applications, and allows clear graphic and character displays. Up/down and/or right/left inversion functions accommodate various mounting methods.

Short projection distances are made possible through the adoption of an ultra-wide angle lens. In addition, a projection lens floating mechanism delivers 40 to 50type projected images with minimal image distortion.A high intensity discharge (HID) lamp ensures high luminance and low power consumption.

Features

?Number of active dots: 1,456,000?Horizontal resolution: 600 TV lines

?Supports SVGA (804 ×3 ×604)/PC98?(804 ×3 ×500) mode display

NTSC/NTSC-WIDE/PAL/PAL-WIDE modes also available through conversion of scanned dot numbers by an external IC

?Up/down and/or right/left inverse display function ?Full-color display with CF-less projection system ?High luminance: normally-white 200 ANSIlm (typ.)

?Ultra-wide angle lens for short projection distances (592.8mm/39.8 type)?Image distortion correction floating mechanism to support 40 to 50 type ?Relative luminance: 70% or more ?Uses HID lamp (100W)

?"PC98" is a trademark of NEC Corporation.

Engine Configuration ?HID lamp

?Lamp driver (DC 300V input)

?High-efficiency illumination system employing an integrator ?Separate RGB illumination systems using dichroic mirrors (DM)?LCD panel mounting mechanism, adjustable along XY θaxes ?LCD panel (LCX021BM)

Dots: 2412 (H) ×604 (V) = 1,456,848 dots

?Wide fixed focal length lens for enlarged projection of LCD Applications

Liquid crystal rear projection TV/monitor

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Description of Basic Operation

?Apply DC 300V to the lamp driver.

?Light emitted by the lamp is focused by an elliptical reflector and is converted to an approximately collimated ray by a relay lens.

?After that the light passes through the polarizer conversion system elements and an optical integrator.?Light output from the optical integrator passes through a Fresnel lens to become a collimated ray, which is color-separated by a group of dichroic mirrors.

?The color-separated rays illuminate the LCX021BM evenly, and are focused on the respective RGB dots by microlenses mounted on the LCX021BM and distributed.

?After transmitting the panel, the light is enlarged and projected onto a screen by a projection lens.For details of the LCD panel operation, see the LCX021BM specifications.

Block Diagram

Lamp Driver

Mirror

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Pin Description and Operating Conditions

Absolute Maximum Ratings (?measured by thermocouples)Optical engine unit (excluding lamp driver)?Operating temperature Topr 0 to +40°C

?Panel and incident side polarizer temperature

?55°C or less (?T = 15°C or less at an ambient temperature of 40°C)

?PBS top (no contact with metal portions)?

70°C or less (?T = 30°C or less at an ambient temperature of 40°C)

?Storage temperature Tstg –20 to +60°C Lamp driver unit

?Operating temperature Topr 0 to +65°C (under forced air cooling)?Storage temperature Tstg –25 to +85°C

Lamp Driver Unit

+5V

Signal output

Pin Description

Operating Conditions

Connector 1

DC power supply input

Connector 2

SCI (start control input) and signal output

123

Connector type Positive (DC 300V)

—Common

JST (J.S.T. Mfg. Co., Ltd.) B 2P3-VH-B Start control input (SCI)

GND

Signal output (flag output)JST (J.S.T. Mfg. Co., Ltd.)

B 3B-PH-K

Input voltage Power consumption Circuit loss Lamp output

Lamp startup peak voltage Start control input (SCI)Input voltage

Lamp extinguish Lamp light

Signal output (flag output)Output voltage Lamp extinguish Lamp light

Min.

220107—95—

–13.503.5Typ.3101101010020

05.00.44.5Max.4101202010525

1.07.01.07Unit V W W W kV

V V V V

Remarks

Input current < 1.0mA 4mA < Input current < 15.0mA

For details of the LCD panel operating conditions and pin description, see the LCX021BM specifications.

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Electro-optical Characteristics

(Ta = 25°C)

25°C 25°C x y x y x y x y ?u'v'

Symbol CR25L Rx Ry Gx Gy Bx By Wx Wy ?u'v'w

Measurement method

34Min.1301500.5700.3000.2550.6350.1250.0300.2400.300—

Typ.1802000.6000.3400.2950.6750.1550.0600.2800.3400.015

Max.——0.6400.3800.3350.7150.1850.0900.3200.3800.025

Unit —ANSIlm

CIE

standards

Item

R G

Contrast ratio Luminous intensity

Chromaticity

Color shading

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1. Contrast ratio

Contrast ratio (CR) is given by the following formula.

L (White): Surface illuminance of the screen at the input signal amplitude VAC = 0.5V.L (Black): Surface illuminance of the screen at VAC = 4.5V.Both luminances are measured by Measurement System I .

CR = L (White)/L (Black)

2. Luminous intensity

In Measurement System I , the average of the illuminance at the nine points specified in the ANSI standards when the input signal amplitude VAC is 0.5V, multiplied by the projection area, is computed.

L = average illuminance at nine ANSI points (lm/m 2) ×projection area (m 2)

Nine ANSI points:centers of each of the

areas obtained by dividing the effective display area into nine smaller areas

3. Chromaticity

Raster modes of each color are defined by the representations at the input signal amplitude conditions shown in the table below. Measurement System I uses chromaticity of x and y of the CIE standards here.

4. Color shading

In Measurement System I , the maximum values of CIE color differences at the three points in the middle row of the nine ANSI points, measured at an input signal amplitude VAC of 0.5V, are used to compute the color shading.

u'v' = (u'1– u'2)2+ (v'1– v 2)2

For other electro-optical characteristics, see the LCX021BM specifications.

(Unit: V)

R input

G input B input 0.5 4.5 4.54.50.5 4.54.5

4.5

0.5R G B

D i s p l a y r a s t e r

Signal amplitude (VAC) applied to each input

Optical Characteristics

The optical performance is specified for the following projection conditions. Projection Conditions

1 2 3 4 5 6 7 8

Item

Panel

Panel shift

Dot pitch

Maximum image height Overscan

Effective panel size Effective projection size Projection magnification

1 2 3

4 5

6 7 8 9 10 11

12 13 14

Item

F number

Half angle of view

Back focus

Projection distance

Conjugate length

Panel side pupil position

Panel side pupil diameter

Screen side pupil position

Screen side pupil diameter

Focal length

Distortion aberration Up/down

1.0H Right/left

TV distortion Up/down

Right/left

Center up/down

Center right/left

MTF (12.5lp/mm)0H

to 0.5H

to 0.7H

to 0.86H

to 1.0H

Relative luminance 1.0H

Design value

1.79

at 39.2-type projection

38.1°

25.778mm

592.8mm

820mm

–1050mm

φ623.0mm

–138.7mm

φ14.4mm

25.772mm

–0.89%

–0.97%

–0.11%

–0.05%

–0.43%

–0.18%

90%

75/70%

50/65%

50/45%

45/35%

50%

Remarks

(at ∞)

(from front of projection

lens bulb)

between panel and

screen

(from panel)

(contracting side)

Sagittal/Tangent.

Setting value

1.60 type (3

2.4mm ×24.3mm)

None

13.5μm ×40.5μm

20.25mm

–2.0%

1.60 type (3

2.4mm ×24.3mm)

40 to 50 type (screen size)

24.631 times/40 type (including distortion)

Projection Lens Specifications (design)in air

at 49-type projection

38.1°

25.519mm

752.3mm

933mm

–1150mm

φ623.0mm

–138.5mm

φ14.4mm

25.841mm

–0.93%

–1.16%

–0.20%

–0.11%

–0.51%

–0.26%

90%

75/65%

50/60%

45/30%

50%

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2. Floating mechanism

The floating mechanism corrects image distortion between 40 and 50-type. At time of shipment, it is optimized for a diagonal of 40-type (including 2.0% underscan), but the floating mechanism should be adjusted if the projection size is different and image distortion becomes prominent. Recommended values for different projection sizes are given below, but adjustments should be made such that image distortion is minimized.Recommended floating mechanism settings Projection size (diagonal) [type]

4041424344454647484950

Recommended floating mechanism setting

–1.5–1–0.500.40.751.11.551.952.252.51. TV distortion

TV distortion is defined by the diagrams and formulas below.

Right/left distortion = (4x)/(A + B)

Up/down distortion = (4y)/(C + D)

A' B' C' D':Points at the four corners of the

quadrangle where center pin is most apparent, and where the right/left

positions of A'D' and B'C' are symmetrical.Where, A'B' ≥AB/2, C'D' ≥CD/2,

A'D' ≥AD/2 and B'C' ≥BC/2

C'C

The same measurement method and standard values are used for center barrel.

4x and 4y A'B' + C'D'

4x and 4y A'D' + B'C'

3. Panel position adjustment range

Adjustment of the LCD panel registration is possible in the horizontal (?h) and vertical (?v) directions. The adjustment ranges are as follows.

Horizontal adjustment (?h): ±0.5mm

Vertical adjustment (?v): ±1.0mm

Angular adjustment (?θ) is included in the vertical adjustment.

Service Parts

The following is a list of service parts.

Part number DS-B011 DS-B012 DS-B003 DS-B004 DS-B015

Name

Lamp unit

Lamp driver

Polarizer unit

Projection lens

Integrator unit

Configuration

Lamp + lamp housing

Polarizer + polarizer holder

Polarization conversion element + integrator

Remarks

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Notes on Handling

(1) Cooling

1) This optical engine is provided with fans to cool the panel and lamp unit. However, the set should be

designed for enough ventilation and convection to ensure sufficient cooling.

2) The lamp should under no circumstances be lit while the cooling fans are not operating. The cooling fans

are provided with sensor output pins to detect operation, and the lamp driver is provided with start control input pins. The set should be designed so that if the cooling fans are not operating, the lamp driver does not operate.

3) When using a dust filter with the ventilation orifices, reduced ventilation due to filter clogging can cause

rises in temperature, possibly damaging the LCD or other components. The temperature of the optical engine should be controlled, and filters should be changed as appropriate.

(2) Lamp unit

1) In order to prevent burns and other accidents, do not directly touch the lamp housing while the lamp is lit

or immediately after it has been extinguished.

2) Because of the extremely high focusing power of the ellipsoid reflector, if it is not installed in the

specified position, damage to the engine or other problems may arise. Ensure that, if the lamp housing is not mounted in the specified position when changing the lamp, the lamp power supply will not operate.

3) Always use the included lamp driver to light the lamp. If the lamp is turned on and off repeatedly in short

cycles, the lamp lifetime will be shortened.

4) The lamp is designed to be lit in a horizontal position. Ensure that the optical axis of the ellipsoid

reflector is within ±20°of horizontal.

5) The lamp emits ultraviolet rays while lit and immediately after being extinguished. Be sure not to look

directly at the lamp.

(3) Protection from dust and dirt

Image quality is significantly degraded by dust on the LCD panel and the polarizer. Employ a set construction such that after dust is removed by a filter (mesh size 50μm or less) during air cooling, air is blown into the optical engine.

1) Employ a dust resistant set construction, and operate in a clean environment.

2) Do not touch the surface of the projection lens and polarizer. The surfaces are easily scratched. When

cleaning, use a clean-room wiper with isopropyl alcohol. Be careful not to leave stains on the surface.

3) Use ionized air to blow off dust adhered to the optical engine.

(4) Static charge prevention

1) Use non-chargeable gloves, or simply use bare hands.

2) Do not touch any electrodes.

3) Wear non-chargeable clothes and conductive shoes.

4) Keep optical engines away from any charged materials.

5) Use ionized air or some other means to discharge.

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(5) Other handling precautions

1) The DM angles of this optical engine are adjusted to their optimal values, and should not be changed.

2) Do not remove or take apart the engine cover, projection lens, projection lens mount, relay lens, integrator

support, or lamp housing.

3) Light emitted from the lamp and from the projection lens may harm the eyes. Do not look directly into the

light from the lamp or lens.

4) Do not drop the optical engine.

5) Do not twist or bend the optical engine.

6) Keep the optical engine away from heat sources.

7) Do not dampen an optical engine with water or other solvents.

8) Avoid storing or using the optical engine at high temperature or high humidity, as this may result in

optical engine damages.

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2+DC -DC

2CB2SC1GND FLAG

CB1C B 2P a c k a g e O u t l i n e (l a m p b a l l a s t u n i t )

U n i t : m m

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±0.3

±0.2±0.1

T O L E R A N C E

L ≤ 16

16 < L ≤ 63

63 < L

P a c k a g e O u t l i n e (o p t i c a l e n g i n e u n i t )U n i t : m m

Sony Corporation