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 (such as high-altitude low pressure, strong radiation, and drastic temperature differences) to provide accurate information for pilots or astronauts. Their optical performance evaluation focuses on the following core aspects:

• ● Extreme Environment Adaptability: Within a wide temperature range of -55℃~70℃ and a 10⁻⁵Pa vacuum environment, the luminance retention rate shall be ≥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), there shall be no pixel failure to prevent loss of critical data.

• ● Adaptability to High-Light and Low-Light Environments: In the face of high-altitude strong light (≥100,000 lux), luminance must be ≥2000 cd/m² with reflectivity ≤1% to prevent glare. In nighttime or in-cabin low-light environments, luminance can be reduced to ≤1 cd/m² without afterglow residue, avoiding interference with night vision capability.

• ● Display Accuracy and Stability: The deviation of luminance/chromaticity uniformity shall be ≤3% to ensure no visual misleading in data charts. The response time shall be ≤20ms, with no motion blur in the dynamic display of real-time parameters (e.g., flight trajectory, cabin pressure) to guarantee operational synchronization.

• ● Reliability and Durability: After 10,000 power-on/off cycles and 10-2000Hz vibration tests, the optical parameter drift shall be ≤5% with no physical damage (such as glass breakage or film layer peeling), 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 does not deviate from the external environment. The 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 avoid misjudgment caused by data misalignment; luminance uniformity deviation of characters/graphics ≤5% with clear edges without blurring.

• ● Penetrability in Complex Light Environments: In scenarios such as direct sunlight, cloud reflection, and nighttime starlight, the virtual image contrast ratio ≥1000:1 to ensure data visibility; resistance to stray light interference (e.g., engine exhaust flame light) with no glare or light spot interference.

• ● Multi-Scenario Adaptability: For different flight phases (takeoff, cruise, landing), automatically switch luminance (500–3000 cd/m²) and display modes to adapt to changes in external light intensity; helmet-mounted HUDs must support a viewing angle range of ±30° horizontally and ±20° vertically, covering the pilot’s natural field of view.

• ● Safety and Compatibility: Projected light intensity does not interfere with the use of night vision goggles (NVG) (near-infrared band intensity ≤0.1 cd/m²); matches the optical characteristics of the windshield with no ghosting or reflection loss (light transmittance loss ≤3%).

Airborne Lighting Optical Measurement System

Optical Performance Evaluation of Aerospace Lighting

Aerospace lighting covers cockpit lighting, cabin lighting, and external identification lighting, etc., which must balance functionality, safety, and ergonomics. The evaluation dimensions are as follows:

• ● Cockpit Lighting: The adjustable luminance range of instrument panel lighting is 0.1-50 cd/m², with a color temperature of 3000K-5000K (to avoid blue light interfering with night vision) and no direct glare (glare level ≤1). The luminous intensity of buttons/indicator lights is uniform, and their colors comply with international standards (e.g., red for warning, green for normal) to ensure quick recognition.

• ● Aerospace Cabin Lighting: It features a gradual luminance range of 0.5-100 cd/m² and supports sunrise/sunset simulation (automatic switching of color temperature between 2700K-6500K) to reduce passenger jet lag discomfort. Emergency lighting maintains luminance ≥10 cd/m² for ≥90 minutes after power failure to guide evacuation routes.

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

• ● Extreme Environment Tolerance: Lighting components show no filament burnout or LED failure in environments of -60℃~80℃ and low pressure, with vibration resistance (20-2000Hz) and impact resistance (1000G acceleration) to ensure long-term stable operation.