Airborne Display and Lighting Optical Testing Systems

1. - Airborne Display Normal Temperature Optical Testing System (FS-TR Series)
2. - Airborne Display Optical Testing System Under High/Low Temperature and Lighting Environments (FS-TC Series)

Optical Performance Evaluation of Aerospace Displays

Aerospace displays must operate stably in extreme environments, including high-altitude low pressure, intense radiation, and drastic temperature fluctuations, to provide accurate data for pilots and astronauts. The optical performance evaluation focuses on these core aspects:

• ● Extreme Environment Adaptability: In a wide temperature range of -55℃ ~ 70℃ and 10⁻⁵ Pa vacuum environment, luminance retention rate ≥ 95% and color shift ΔE ≤ 2, ensuring no black screen at low temperatures and no afterimage at high temperatures. Under radiation resistance (total dose ≥ 100 krad), no pixel failure occurs to prevent critical data loss.

• ● High & Low Light Adaptability: Under high-altitude strong light (≥ 100,000 lux), luminance ≥ 2000 cd/m² and reflectivity ≤ 1% to eliminate glare. In nighttime or low-light cabin environments, luminance can be reduced to ≤ 1 cd/m² with no afterglow, avoiding interference with night vision capabilities.

• ● Display Accuracy & Stability: Luminance and chromaticity uniformity deviation ≤ 3% to ensure no visual misinterpretation of data and graphics. Response time ≤ 20 ms, with no motion blur during dynamic display of real-time parameters (e.g., flight trajectory, cabin pressure), ensuring operational synchronization.

• ● Reliability & Durability: After 10,000 power on/off cycles and 10–2000 Hz vibration tests, optical parameter drift ≤ 5% with no physical damage (e.g., glass breakage, film delamination), adapting to frequent takeoffs/landings or launch impacts.

Airborne HUD Optical Testing System

Optical Performance Evaluation of Aerospace HUD (Head-Up Display)

Aerospace HUD projects critical flight parameters (such as altitude, speed, and flight path) onto the cockpit windshield or helmet-mounted display, ensuring pilots' line of sight remains focused on the external environment. Key evaluation focuses include: 

• ● Projection Accuracy: Virtual image distance (fixed at 5–10 meters to match high-altitude visual distance), distortion rate ≤ 0.5% to prevent misjudgment caused by misaligned data; luminance uniformity deviation of characters/graphics ≤ 5% with sharp, clear edges.

• ● Complex Light Environment Penetration: Under direct sunlight, cloud reflection, nighttime starlight, and other conditions, virtual image contrast ratio ≥ 1000:1 to ensure data visibility; resistance to stray light interference (e.g., engine exhaust flame) with no glare or bright spot interference. 

• ● Multi-Scenario Adaptability: Automatically adjust luminance (500–3000 cd/m²) and display modes for different flight phases (takeoff, cruise, landing) to match external ambient light changes; helmet-mounted HUDs must support a viewing angle range of ±30° horizontal and ±20° vertical, covering the pilot’s natural field of view.

• ● Safety and Compatibility: Projected light intensity does not interfere with night vision goggle (NVG) operation (near-infrared band intensity ≤ 0.1 cd/m²); compatible with windshield optical properties with no ghosting or reflection loss (light transmittance loss ≤ 3%). 

Airborne Lighting Optical Measurement System

Optical Performance Evaluation of Aerospace Lighting

Aerospace lighting encompasses cockpit lighting, cabin lighting, external identification lighting, and other systems. It must balance functionality, safety, and ergonomics. The evaluation dimensions are as follows:

• ● Cockpit Lighting: Instrument panel lighting features an adjustable luminance range of 0.1–50 cd/m², with a color temperature of 3000K–5000K (to prevent blue light interference with night vision) and no direct glare (glare level ≤ 1). Buttons and indicator lights offer uniform luminous intensity with internationally standardized color coding (e.g., red for warnings, green for normal status) to ensure rapid identification.

• ● Aerospace Cabin Lighting: It provides a smooth dimming luminance range of 0.5–100 cd/m² and supports sunrise/sunset simulation (automatic color temperature switching between 2700K–6500K) to alleviate passenger jet lag. Emergency lighting sustains luminance ≥ 10 cd/m² for a minimum of 90 minutes after power failure to guide evacuation routes.

• ● External Identification Lighting: Navigation lights (red, green, white) deliver luminous intensity compliant with ICAO standards (≥ 1000 cd) and angular visibility ≥ 110° to ensure long-distance recognition. Anti-collision lights operate at a flicker frequency of 40–60 flashes per minute with strong fog and rain penetration (visible distance ≥ 5 km under 1 km visibility conditions).

• ● Extreme Environment Tolerance: Lighting components exhibit no filament burnout or LED failure in extreme conditions ranging from -60℃ to 80℃ and low-pressure environments. They feature vibration resistance (20–2000 Hz) and shock resistance (1000G acceleration), ensuring long-term stable operation.