FAQ Page
What do you need to know before ordering Liteye product.
First and for most, understand your applications requirements. Are you using a computer or a camera? Stated differently what your signal source is. A camera will output composite video, either PAL or NTSC and a computer will output analog RGB. These are the only signals that Liteye products accept natively To further clarify the signal type and the restraints , analog RGB can only be a resolution of 800X600 or 640X480 and the composite video is either CCIR (monochrome PAL) or RS170 (monochrome NTSC). Most color composite video will simply be converted to monochrome. It is rare that a sync problem will be seen.

The driver electronics are not auto sensing for the type of signal input (they are not “plug and play”). Some user interaction must occur to tell the electronics the type of signal being used. For instance, the user may have to push a button or change cable type used; simply changing the signal input will not reconfigure the electronics to accept a change in signal type. These and other configurations are determined by the firmware build loaded onto the driver electronics.

It is important that you discuss your application carefully with a Liteye sales representative before making your final decision on a firmware configuration.

Liteye products also come in two main varieties. The first is a direct view configuration like the view finder of a video camera. You see a picture but you are not actually looking through the camera. You are simply looking at a display that is showing some image on it.

The other configuration is like an SLR camera. When you look through the view finder you are actually looking through the lens. You may see information displayed such as battery life remaining or shutter speed, but this information is displayed over the real world. These our like our “see through”  optic products.

One other consideration is your power source. Liteye products natively accept 4.5vDC to 6.5vDC. This will cover USB power to 4 Double AAs. To use higher power source than this, a power a regulator will have  to be used to keep the voltage within acceptable limits.

As stated earlier, these and other configurations are determined by the firmware build, optical configuration and other available accessories chosen at the time of purchase . It is important that you discuss your application carefully.
What video format does Liteye product support
Analog VGA 640 x 480 @ 60, 72, 75 & 85 Hz non-interlaced
 Analog SVGA 800 x600 @ 60, 72, 75 & 85 Hz non-interlaced    
 Interlaced 480 active lines (240 per field), timing and levels per SMPTE-170M
Interlaced 600 active lines (300 per field), levels per SMPTE-170M
What type of user input capabilities via custom firmware
The following firmware options are possible, depending on the HMD and cable selected:

Luminance control
Red / Green / Blue brightness control (good for hue matching)
Contrast control
Image orientation adjustment
180 degree rotation
mirroring along X or Y axes
Manual video input adjustment
NTSC to PAL, vice versa
VGA to SVGA, vice versa
VESA frequency (60, 72, 75 & 85)
Screensaver (pixel shift)
LED indicator
 
What is the Mean Time Between Failure of the OLED display
Most Liteye products utilize a OLED display and it is the display with the shortest MTF, therefore we usually refer to the display when classifying our products.
The following is a standard statement regarding MTTF (Mean Time To Failure). Since microdisplays that fail are irreparable, a MTTF is used instead of MTBF (Mean Time Between Failure).
Each display can be considered to have two major components: the carrier PCB and the OLED. The MTTF (Mean Time To Failure) of the carrier PCB and its components are standard for electrical components, more than a million hours. On the other hand, the MTTF of the OLED has been evaluated to be approximately 200,000 hours. To achieve this value two sets of 32 displays were operated at 85°C and 85%RH until all failed. The cumulative number of failures is used in conjunction with activation energy and acceleration factor in order to evaluate the failure rate at room temperature, and from there the MTTF.
What is the Pixel Quality Specification of Liteye products
STUCK OFF SUB-PIXELS  
SVGA+      SVGA-3D     SXGA
< 120          < 120          < 310  
  No more than one sub pixel out per pixel (Touching sub-pixels in RGB order within row.) No more than 2 adjacent sub pixels out

Standard XL Display- Our standard for microdisplay pixel defects is less than 144 sub-pixels defects (off) per panel, or 0.01% of the total amount of sub pixels in the SVGA+ display.

STUCK ON SUB PIXELS XL - NONE ALLOWED 

BLACK SPOT- NONE ALLOWED
What are the assembly standards for Liteye products
All Liteye controller boards and cable assemblies are compliant with the "Restriction of Hazardous Substances Directive" (RoHS) Initiative 2002/95/EC.
All Liteye controller boards and cable assemblies are compliant with the "Acceptability of Electronic Assemblies" ANSI/IPC A-610B.
Where applicable, Liteye products conform to the IEC Ingress Protection rating of IP67 (dust-tight, protection against temporary immersion) or IP68 (dust-tight, protection against complete continuous submersion in water up to 1 meter deep for 15 minutes)
What type of EMI testing is standard for Liteye products
Where applicable, Liteye conducts the following electromagnetic compliance tests:
• EN 61000-6-2: 2001, Part 6-2 Generic Standard Immunity for Industrial Environments
• EN 55011: 2007 Emissions Standards, Class B, Group 1
Requirement Specification Test Method
EN 61000-6-2: 2001,
Part 6-2: Generic
Standard - Immunity
for Industrial
Environment		 Electrostatic Discharge IEC 61000-4-2: 2001-04
  Radiated RF Immunity IEC 61000-4-3: 2006-02
  Electrical Fast Transient/Burst IEC 61000-4-4: 2004-07
  Surge Immunity IEC 61000-4-5: 2005-11
  Conducted RF Immunity IEC 61000-4-6: 2006-05
  Power Frequency H-field
Immunity		 IEC 61000-4-8: 2001-03
  Voltage Dips. Interrupts IEC 61000-4-11: 2004-03
How do you  return product to Liteye for credit Liteye Systems, Inc. has a 15 day return policy on all HMDs. If for any reason you wish to return your HMD during those first 15 days please call our tech support line at 720-974-1766, Monday through Friday, 8AM to 5PM MST. Obtain an RMA, (Return Merchandise Authorization), number. This RMA number must be clearly printed on the outside of the shipping box. Failure to place RMA number on your box may result in your box being returned to you. All returns during this 15 day period will be subject to a 15% restocking fee. Your refund will be issued minus restocking fee and any shipping charges.

 How do you  return product to Liteye for repair Please fill out this document RMA doc and all of the information to you best knowledge. Once you have completed the RMA form please send it back to Zach Howell at zhowell@liteye.com and he will send you an email in response to the information you have provided. If an RMA number is issued please ship the RMA back to
Zach Howell at:
7060 S. Tucson Way
Centennial, CO. 80112. Once Liteye Systems has received your RMA, Liteye Systems will do an initial trouble shooting assessment. All units (warranty or not) will receive this assessment. This first diagnoses is a $75.00 per hour charge. Once tech. support finishes with its assessment Liteye Systems will contact via email with the repair report.

Once you authorize Liteye Systems to make the necessary repairs, Liteye Systems will send you information about payment of the repair. All repairs will be completed after Liteye Systems receives all payments for the repair.

If your repair is not under warranty and Liteye Systems does receive payment within 30 days of the  repair  report issued to you, the unit(s) will be returned as is, at original shipper’s expense. Liteye Systems will also return any RMA that is not authorized to be repaired or if Liteye Systems receives no information regarding the repairs within the 30 days, at original shipper’s expense.

Typical fix and return is 15 days from the day that Liteye Systems receives and checks in the RMA. If an HMD is returned with out an RMA number Liteye Systems will not start any work on the returned HMD and it will be returned to the shipper at their expense.

 What are the brightness characteristics of the OLED display.

 In SVGA 60Hz VESA mode(OLED Rev 3), all microdisplay models exhibit at least 150 cd/m2 (front luminance), or 471.2 foot-lambert (fL).

Display Part Number

Display Type

Typical

Maximum

EMA-100310-01

color

150 cd/m2

300 cd/m2

EMA-100311-01

monochrome green

1500 cd/m2

3000 cd/m2

EMA-100309-01

monochrome white

900 cd/m2

1800 cd/m2
How is power measured on Liteye's product The objective is to test  to find the a correlation between level of pixels intensity and power consumed by the HMD with a set luminance level. The luminace adjustment is divided into 256 steps.  The plus/minus buttons on our units simply increment and decrement the luninace level. This of course can be altered to fit the customer's needs though. In the test, it is set to a nominal level towards the middle of the scale. Please see the results of this test  in the linked PDF.