DLP® Projector User manual
Table of Contents SAFETY................................................................................................ 4 Important Safety Instruction....................................................................................................... 4 3D Safety Information................................................................................................................. 5 Copyright.............................................................................................................
Setup screen type menu........................................................................................................... 38 Setup lamp settings menu......................................................................................................... 38 Setup filter settings menu.......................................................................................................... 38 Setup power settings menu.....................................................................................
SAFETY The lightning flash with arrow head within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
Only use attachments/accessories specified by the manufacturer. Do not look into straight into the projector lens during operation. The bright light may harm your eyes. When replacing the lamp, please allow the unit to cool down. Follow instructions as described on pages 43-44. This projector will detect the life of the lamp itself. Please be sure to change the lamp when it shows warning messages.
Watching 3D projection may also cause motion sickness, perceptual after effects, disorientation, eye strain and decreased postural stability. It is recommended that users take frequent breaks to lessen the potential of these effects. If your eyes show signs of fatigue or dryness or if you have any of the above symptoms, immediately discontinue use of this device and do not resume using it for at least thirty minutes after the symptoms have subsided.
FCC This device has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This device generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
INTRODUCTION Package Overview Carefully unpack and verify that you have the items listed below under standard accessories. Some of the items under optional accessories may not be available depending on the model, specification and your region of purchase. Please check with your place of purchase. Some accessories may vary from region to region. The warranty card is only supplied in some specific regions. Please consult your dealer for detailed information.
INTRODUCTION Product Overview 1 2 6 3 8 4 5 7 10 9 13 12 11 6 Note: Do not block projector inlet or outlet air vents. (*) optional accessory varies depending on model, specification, and region. No Item No Item 1. Lamp Cover 8. Lens 2. Focus Ring 9. Ventilation (inlet) 3. Zoom Lever 10. Ventilation (outlet) 4. IR Receiver 11. KensingtonTM Lock Port 5. Keypad 12. Power Socket 6. Tilt-Adjustment Foot 13. Input / Output 7.
INTRODUCTION Connections 1 2 HDMI 1 HDMI 2 / MHL 3 USB Power Out (5V 4 5 VGA-IN / YPbPr 6 7 Audio In VGA-OUT / YPbPr VIDEO 1.0A) MOUSE SERVICE Audio Out RS-232C 11 10 9 8 Regulatory Name No Item Type 1 SVGA Type 2 SVGA Type 3 SVGA & Type 4 XGA Type 5 WXGA Type 6 WXGA Type 7 1080p P P P N/A N/A P P N/A 1. HDMI 1 Connector N/A 2. HDMI 2 / MHL Connector N/A P P 3. USB Power Out (5V 1A) Connector / MOUSE / SERVICE Connector P* P P P* P P* 4.
INTRODUCTION Keypad 1 2 3 4 11 5 10 6 9 8 No Item 7 No Item 1. On/Standby LED 7. Enter 2. Lamp LED 8. Menu 3. Keystone Correction 9. Four Directional Select Keys 4. Temp LED 10. Source 5. Information 11. Power 6.
INTRODUCTION Remote control 10 11 1 12 2 13 3 14 4 4 5 6 15 2 7 16 8 17 9 18 No Item No Item 1. Power On / Off 10. IR LED Indicator 2. Keystone + / - 11. 3. AV Mute 12. Aspect Ratio 4. Volume - / + 13. Mute 5. Enter 14. Four Directional Select Keys 6. Menu 15. 3D 7. HDMI 16. Video 8. VGA 17. Resync 9. Source 18. Lamp Mode Freeze Note: Before using the remote control for the first time, remove the transparent insulation tape.
SETUP AND INSTALLATION Installing the projector Your projector is designed to be installed in one of four possible positions. Your room layout or personal preference will dictate which installation location you select. Take into consideration the size and position of your screen, the location of a suitable power outlet, as well as the location and distance between the projector and the rest of your equipment.
SETUP AND INSTALLATION Connecting sources to the projector 3 1 HDMI 1 4 6 5 2 HDMI 2 / MHL VGA-IN / YP YPbPr USB Power Out (5V A Audio In VGA-OUT / YPbPr VIDEO 1.0A) MOUSE SERVICE Audio Out RS-232C MOLEX 13 11 14 9 10 8 7 12 MOLEX Regulatory Name No 14 English Item Type 1 SVGA Type 2 SVGA 1. HDMI Cable N/A 2. HDMI / MHL Cable N/A P P 3. RCA Component Cable P N/A 4. VGA Out Cable N/A N/A 5. Video cable P N/A 6. Audio In Cable N/A N/A 7.
SETUP AND INSTALLATION Regulatory Name No Item Type 1 SVGA Type 2 SVGA 8. Audio In Cable N/A N/A 9. RS232 Cable N/A N/A N/A 11. USB Cable (mouse control) P P 12. USB Power Cable N/A 13. HDMI Stick N/A 14. Power Cord P 10. VGA In Cable P P P P Type 3 SVGA & Type 4 XGA P P P P P P P Type 5 WXGA Type 6 WXGA Type 7 1080p P P P P P P P P P P P P P P P N/A N/A P N/A N/A P Note: “P” means the item is supported, “N/A” means the item is not available.
SETUP AND INSTALLATION Adjusting the projector image Image height The projector is equipped with elevator feet for adjusting the image height. 1. 2. Locate the adjustable foot you wish to adjust on the underside of the projector. Rotate the adjustable foot clockwise or counterclockwise to raise or lower the projector. Tilt-Adjustment Feet Tilt-Adjustment Ring Zoom and focus To adjust the image size, turn the zoom lever clockwise or counterclockwise to increase or decrease the projected image size.
SETUP AND INSTALLATION Remote setup Installing / replacing the batteries 20 25 R LT S 20 25 LT R O C 3V S 20 LT R M 25 Put the cover back. 3V O 3. Install new battery into the compartment. Remove the old battery and install new one (CR2025). Ensure that the side with a “+” is facing up. C 2. 2- L iC E L L 3 V O M nO S JAPAN H Press firmly and slide the battery cover off. C 1.
SETUP AND INSTALLATION Effective range Infra-Red (IR) remote control sensor is located on the top side of the projector. Ensure to hold the remote control at an angle within 20 degrees perpendicular to the projector's IR remote control sensor to function correctly. The distance between the remote control and the sensor should not be longer than 7 meters (~ 23 feet). Make sure that there are no obstacles between the remote control and the IR sensor on the projector that might obstruct the infra-red beam.
USING THE PROJECTOR Powering on / off the projector or Powering on 1. Securely connect the power lead and signal/source cable. When connected, the On/Standby LED will turn red. 2. Turn on the projector by pressing the " " either on the projector keypad or the remote control. 3. A start up screen will display in approximately 10 seconds and the On/Standby LED will be flashing green or flashing blue.
USING THE PROJECTOR Selecting an input source Turn on the connected source that you want to display on the screen, such as computer, notebook, video player, etc. The projector will automatically detect the source. If multiple sources are connected, push the source button on the projector keypad or the remote control to select the desired input.
USING The projector Menu navigation and features The projector has multilingual on-screen display menus that allow you to make image adjustments and change a variety of settings. The projector will automatically detect the source. 1. To open the OSD menu, press 2. When OSD is displayed, use on a particular page, press 3. Use keys to select the desired item in the sub menu and then press settings. Adjust the settings by using keys. 4.
USING THE PROJECTOR OSD Menu tree Main Menu Sub Menu Sub Menu 2 Sub Menu 3 Sub Menu 4 Values Presentation Bright Cinema Game Display Mode [Data] sRGB DICOM USER 3D Off [Default] BlackBoard Light Yellow Wall Color [Data] Light Green Light Blue Pink Gray Display Image Settings Brightness -50~50 Contrast -50~50 Sharpness 1~15 Color -50~50 Tint -50~50 Film Video Graphics Gamma Standard(2.2) 1.8 2.0 2.
USING THE PROJECTOR Main Menu Sub Menu Sub Menu 2 Sub Menu 3 Sub Menu 4 Values R [Default] G B Color C Y M W Color Matching Saturation -50~50 [Default:0] Hue -50~50 [Default:0] Gain -50~50 [Default:0] Reset Cancel [Default] Yes Exit RGB Gain/Bias Display Image Settings Color Settings Red Gain -50~50 Green Gain -50~50 Blue Gain -50~50 Red Bias -50~50 Green Bias -50~50 Blue Bias -50~50 Reset Cancel [Default] Yes Exit Color Space [Not HDMI Input] Auto [Default] RGB YUV Auto
USING THE PROJECTOR Main Menu Sub Menu Sub Menu 2 Sub Menu 3 Automatic Signal Image Settings Sub Menu 4 Values Off On [Default] Frequency 0~100 [Default: 0] Phase -50~50 [Default: 0] H. Position -50~50 [Default: 0] V.
USING THE PROJECTOR Main Menu Audio Sub Menu Sub Menu 2 Sub Menu 3 Sub Menu 4 Values Off [Default] Mute On Volume 0-10 [Default: 5] Front [Default] Rear Projection Ceiling-top Rear-top Screen Type 16:9 [WXGA WUXGA models] 16:10 [Default] Off Lamp Reminder On [Default] Lamp Settings Cancel [Default] Lamp Reset Yes Yes Optional Filter Installed No Filter Usage Hours (Read only) Off 300hr Filter Settings Filter Reminder 500hr [Default] 800hr 1000hr Setup Cancel [Default] Filter R
USING THE PROJECTOR Main Menu Sub Menu Sub Menu 2 Sub Menu 3 Sub Menu 4 Values Off Test Pattern Grid White IR Function On Off HDMI 2 Test Pattern Brightness Contrast Sleep Timer Color Matching User1 Color Temp Gamma Projection Lamp Settings Setup Zoom Remote Settings Freeze MHL [depends on remote] HDMI 2 Test Pattern Brightness Contrast Sleep Timer Color Matching User2 Color Temp Gamma Projection Lamp Settings Zoom Freeze MHL 26 English
USING THE PROJECTOR Main Menu Sub Menu Sub Menu 2 Sub Menu 3 Sub Menu 4 Values HDMI 2 Test Pattern Brightness Contrast Sleep Timer Remote Settings [depends on remote] Color Matching User3 Color Temp Gamma Projection Lamp Settings Zoom Freeze MHL Projector ID 00~99 English [Default] Deutsch Français Italiano Español Português Polski Nederlands Svenska Setup Norsk Dansk Suomi ελληνικά Language 繁體中文 简体中文 日本語 Options 한국어 Русский Magyar Čeština ไทย Türkçe Tiếng Việt Bahasa Indonesia Română Slovenč
USING THE PROJECTOR Main Menu Sub Menu Sub Menu 2 Sub Menu 3 Sub Menu 4 Values Top left Top right Menu Location Center [Default] Bottom left Menu Settings Bottom right Off Menu Timer 5sec 10sec [Default] HDMI (Type 3 SVGA/ Type 4 XGA/ Type 5 WXGA/ Type 7 1080p) HDMI1 (Type 2 SVGA/ Type 6 WXGA) HDMI2/MHL (Type 2 SVGA/ Type 6 WXGA) Input Source VGA (Type 1 SVGA/ Type 3 SVGA/ Type 4 XGA/ Type 5 WXGA/ Type 6 WXGA/ Type 7 1080p) Video (Type 1 SVGA/ Type 3 SVGA/ Type 4 XGA/ Type 5 WXGA/ Type 6 WXGA/
USING THE PROJECTOR Main Menu Sub Menu Sub Menu 2 High Altitude Display Mode Lock Keypad Lock Information Hide Options Logo Setup Sub Menu 3 Sub Menu 4 Values Off [Default] On Off [Default] On Off [Default] On Off [Default] On Default [Default] Neutral None [Default] Blue Background Color Red Green Grey Logo Reset OSD Reset Reset to Default Cancel [Default] Yes Cancel [Default] Yes Regulatory Serial Number Current Input Source Resolution 00x00 Refresh Rate 0.
USING THE PROJECTOR mode. The Projection Hours in service mode will not be reset. When you made the changes on the “IR Function”, “Projection”, or “Keypad Lock” function, a confirmation message will appear on the screen. Select “Yes” to save the settings. Each display mode can be adjusted and saved the value. In 3D timing mode, the zoom/edge mask will be disabled to prevent from image break.
USING THE PROJECTOR Display image settings menu Display Mode There are many factory presets optimized for various types of images. Presentation: This mode is suitable for showing PowerPoint presentations when the projector is connected to the PC. Bright: Maximum brightness from PC input. Cinema: Select this mode for home theater. Game: Select this mode to increase the brightness and response time level for enjoying video games. sRGB: Standardized accurate color.
USING THE PROJECTOR BrillianColorTM: This adjustable item utilizes a new color-processing algorithm and enhancements to enable higher brightness while providing true, more vibrant colors in picture. Color Temperature (data-mode only): Select a color temperature from Warm, Medium, or Cool. Color Temperature: Select a color temperature from D50, D65, D75, D83, D93, and Native.
USING THE PROJECTOR Bright: Choose “Bright” to increase the brightness. Eco: Choose “Eco” to dim the projector lamp which will lower power consumption and extend the lamp life. Dynamic: Choose “Dynamic” to dim the lamp power which will be based on brightness level of the content and adjust lamp power consumption between 100% and 30% dynamically. The lamp life will be extended.
USING THE PROJECTOR Display aspect ratio menu Aspect Ratio Select the aspect ratio of the displayed image between the following options: 4:3: This format is for 4:3 input sources. 16:9: This format is for 16:9 input sources, like HDTV and DVD enhanced for Wide screen TV. 16:10 (for WXGA and WUXGA models only): This format is for 16:10 input sources, like widescreen laptops.
USING THE PROJECTOR SVGA/XGA auto mapping rule: Input resolution Auto 4:3 Wide Laptop SDTV HDTV Auto/Scale H-resolution V-resolution 1024 768 640 480 1024 768 800 600 1024 768 1024 768 1024 768 1600 1200 1024 768 1280 720 1024 576 1280 768 1024 614 1280 800 1024 640 720 576 1024 576 720 480 1024 576 1280 720 1024 576 1920 1080 1024 576 WXGA scaling table (screen type 16x10): Note: Supported screen type 16:9 (1280x720), 16:10 (1280x800).
USING THE PROJECTOR WXGA auto mapping rule (screen type 16x10): Auto 4:3 Wide Laptop SDTV HDTV Input resolution Auto/Scale H-resolution V-resolution 1280 800 640 480 1066 800 800 600 1066 800 1024 768 1066 800 1280 1024 1066 800 1400 1050 1066 800 1600 1200 1066 800 1280 720 1280 720 1280 768 1280 768 1280 800 1280 800 720 576 1280 720 720 480 1280 720 1280 720 1280 720 1920 1080 1280 720 WXGA scaling table (screen type 16x9): 16 : 9 screen 480i/
USING THE PROJECTOR WXGA auto mapping rule (screen type 16x9): Auto 4:3 Wide Laptop SDTV HDTV Input resolution Auto/Scale H-resolution V-resolution 1280 720 640 480 960 720 800 600 960 720 1024 768 960 720 1280 1024 960 720 1400 1050 960 720 1600 1200 960 720 1280 720 1280 720 1280 768 1200 720 1280 800 1152 720 720 576 1280 720 720 480 1280 720 1280 720 1280 720 1920 1080 1280 720 Display edge mask menu Edge Mask Use this function to remove the v
USING THE PROJECTOR Audio menu Audio mute menu Mute Use this option to temporarily turn off the sound. On: Choose the “On” to turn mute on. Off: Choose the “Off” to turn mute off. Note: “Mute” function affects both internal and external speaker volume. Audio volume menu Volume Adjust the volume level. Setup menu Setup projection menu Projection Select the preferred projection between front, rear, ceiling-top, and rear-top.
USING THE PROJECTOR Filter Reminder Choose this function to show or hide the warning message when the changing filter message is displayed. The available options include 300hr, 500hr, 800hr, and 1000hr. Filter Reset Reset the dust filter counter after replacing or cleaning the dust filter. Setup power settings menu Direct Power On Choose “On” to activate Direct Power mode.
USING THE PROJECTOR Setup security menu Security Enable this function to prompt for a password before using the projector. On: Choose “On” to use security verification when the turning on the projector. Off: Choose “Off” to be able to switch on the projector without password verification. Security Timer Can be select the time (Month/Day/Hour) function to set the number of hours the projector can be used. Once this time has elapsed you will be requested to enter your password again.
USING THE PROJECTOR Setup test pattern menu Test Pattern Select the test pattern from grid, white or disable this function (off). Setup remote settings menu IR Function Set the IR function setting. On: Choose “On”, the projector can be operated by the remote control from front or top IR receiver. Off: Choose “Off”, the projector can’t be operated by the remote control from front or top IR receiver. By selecting “Off”, you will be able to use the Keypad keys. Remote Code Set remote custom code.
USING THE PROJECTOR High Altitude When “On” is selected, the fans will spin faster. This feature is useful in high altitude areas where the air is thin. Display Mode Lock Choose “On” or “Off” to lock or unlock adjusting display mode settings. Keypad Lock When the keypad lock function is “On”, the Keypad will be locked. However, the projector can be operated by the remote control. By selecting “Off”, you will be able to reuse the Keypad. Information Hide Enable this function to hide the information message.
maintenance Replacing the lamp The projector automatically detects the lamp life. When the lamp life is nearing the end of use, a warning message will appear on the screen. Warning Lamp Warning Lamp life exceeded. When you see this message, please contact your local reseller or service center to change the lamp as soon as possible. Make sure the projector has been cooled down for at least 30 minutes before changing the lamp.
MAINTENANCE Replacing the lamp (continued) 2 3 4 5 6 1 Procedure: 1. Switch off the power to the projector by pressing the " " button on the remote control or the projector keypad. 2. Allow the projector to cool down for at least 30 minutes. 3. Disconnect the power cord. 4. Unscrew the screw on the cover. 1 5. Remove the cover. 2 6. Unscrew the screw on the lamp module. 3 7. Lift up the lamp handle. 4 8. Remove the lamp cord. 5 9. Remove the lamp module carefully. 6 10.
MAINTENANCE Installing and cleaning the dust filter Installing the dust filter Note: Dust filters are only required/supplied in the selected regions with excessive dust. Cleaning the dust filter We recommend you to clean the dust filter every three months. Clean it more often if the projector is used in a dusty environment. Procedure: 1. Switch off the power to the projector by pressing the " " button on the remote control or the projector keypad. 2. Disconnect the power cord. 3.
additional information Compatible resolutions Digital compatibility B0/Established Timing B0/Standard Timing B0/Detail Timing B1/Video Mode B1/Detail Timing 720x400 @ 70Hz SVGA: Native timing: 640x80p @ 60Hz 720x480p @ 60Hz 640x480 @ 60Hz 800x600 @ 120Hz XGA: 1024x768 @ 60Hz 720x480p @ 60Hz 1280x720p @ 60Hz 640x480 @ 67Hz 1024x768 @ 120Hz WXGA: 1280x800 @ 60Hz; 1280x720 @ 60Hz 1280x720p @ 60Hz 1366x768 @ 60Hz 640x480 @ 72Hz 1280x800 @ 60Hz 1080P: 1920x1080 @ 60Hz 1920x1080i @ 60Hz 19
ADDITIONAL INFORMATION Analog compatibility B0/Established Timing B0/Standard Timing B0/Detail Timing 720x400 @ 70Hz SVGA: Native timing: 640x480 @ 60Hz 800x600 @ 120Hz XGA: 1024x768 @ 60Hz 640x480 @ 67Hz 1024x768 @ 120Hz WXGA: 1280x800 @ 60Hz; 1280x720 @ 60Hz 640x480 @ 72Hz 1280x800 @ 60Hz 1080P: 1920x1080 @ 60Hz 640x480 @ 75Hz 1280x1024 @ 60Hz 800x600 @ 56Hz 1680x1050 @ 60Hz 800x600 @ 60Hz 1280x720 @ 60Hz 800x600 @ 72Hz 1280x720 @ 120Hz 800x600 @ 75Hz 1600x1200 @ 60Hz 832x624 @ 75
ADDITIONAL INFORMATION True 3D video compatibility Input timing HDMI 1.
ADDITIONAL INFORMATION Image size and projection distance (1080P) Diagonal Length Size of (16:9) Screen Screen Size W x H (m) Projection Distance (D) (inch) (m) Offset (inch) Width Height Width Height Wide Tele Wide Tele (m) (inch) 36 0.80 0.45 31.38 17.65 1.2 1.3 3.94 4.27 0.07 2.76 40 0.89 0.5 34.86 19.6 1.3 1.4 4.27 4.59 0.08 3.15 50 1.11 0.62 43.58 24.5 1.6 1.8 5.25 5.91 0.10 3.94 60 1.33 0.75 52.29 29.4 2.0 2.2 6.56 7.22 0.12 4.72 70 1.
ADDITIONAL INFORMATION Projector dimensions and ceiling mount installation 1. 2. To prevent damage to your projector, please use the Optoma ceiling mount.
ADDITIONAL INFORMATION IR remote codes Address Data Repeat format byte 1 byte 2 byte 3 byte 4 Power Press to turn on / off the projector. F1 32 CD 81 7E Freeze Press to freeze the projector image. F1 32 CD 87 78 Aspect Press to change aspect ratio of a displayed image.
ADDITIONAL INFORMATION Key legend Description Down/Keystone Press to adjust image distortion caused by tilting the projector. Address Data Repeat format byte 1 byte 2 byte 3 byte 4 F2 32 CD 84 7B Press to navigate down. 3D Press to manually select a 3D mode that matches your 3D content. F1 32 CD 93 6C HDMI Press to choose HDMI source. F1 32 CD 86 79 VGA Press to choose VGA source. F1 32 CD 8E 71 Video Press to choose video source.
ADDITIONAL INFORMATION Troubleshooting If you experience a problem with your projector, please refer to the following information. If a problem persists, please contact your local reseller or service center. Image problems No image appears on-screen Ensure all the cables and power connections are correctly and securely connected as described in the "Installation" section. Ensure the pins of connectors are not crooked or broken. Check if the projection lamp has been securely installed.
ADDITIONAL INFORMATION Two images, side-by-side format Press "3D" button and switch to "SBS" for input signal is HDMI 1.3 2D 1080i side-by-side. Image does not display in 3D Check if the battery of 3D glasses is drained. Check if the 3D glasses is turned on. When the input signal is HDMI 1.3 2D (1080i side-by-side half), press "3D" button and switch to "SBS".
ADDITIONAL INFORMATION Warning indicators When the warning indicators (see below) light up or flash, the projector will automatically shutdown: "LAMP" LED indicator is lit red and if "On/Standby" indicator flashes amber. "TEMP" LED indicator is lit red and if "On/Standby" indicator flashes amber. This indicates the projector has overheated. Under normal conditions, the project can be switched back on. "TEMP" LED indicator flashes red and if "On/Standby" indicator flashes amber.
ADDITIONAL INFORMATION Temperature warning: Warning TEMPERATURE TOO HIGH Please: 1. Make sure air in and outlets are not blocked. 2. Make sure the environment temperature is under 45 degree C. If the problem persists in spite of the above. Please contact a service center for repair. Fan failed: Warning FAN LOCKED The projector will switch off automatically Please contact a service center for repair.
USING THE PROJECTOR Specifications Optical Description Maximum resolution UXGA, 1600x1200, 60Hz WUXGA for WXGA 16:10 Native resolution SVGA/XGA/WXGA/1080p Lens - Manual zoom and manual focus - Bright Mode (Normal Mode) 5000 Hours Standard @190W, 50% Survival Rate Lamp life - STD Mode (ECO Mode) 6000 Hours Typical @160W, 50% Survival Rate - Dynamic mode 6500 Hours - DE Mode in education cycle 10000 Hours Image size (diagonal) 22.
USING THE PROJECTOR Optoma global offices For service or support, please contact your local office. USA 3178 Laurelview Ct. Fremont, CA 94538, USA www.optomausa.com Canada 3178 Laurelview Ct. Fremont, CA 94538, USA www.optomausa.com Latin America Japan 888-289-6786 東京都足立区綾瀬3-25-18 510-897-8601 株式会社オーエス services@optoma.com コンタクトセンター:0120-380-495 info@os-worldwide.com www.os-worldwide.com Taiwan 888-289-6786 12F., No.213, Sec. 3, Beixin Rd.
www.optoma.
