1. Design Goals

Function: Provides UVB light (promotes vitamin D3 synthesis and prevents metabolic bone disease) and UVA light (stimulates natural behaviors such as foraging and reproduction) to meet the physiological needs of reptiles.

Applicable scenarios : small and medium-sized reptile boxes (30-120cm), suitable for desert types (such as bearded dragons and tortoises), tropical types (such as chameleons), and nocturnal reptiles (such as ball pythons).

Technical requirements:

Accurate spectrum: UVB peak 310nm, UVA peak 370nm, simulating natural sunlight.

Adjustable intensity: UVB UVI 0.5-8, UVA 0.2-1 mW /cm², suitable for a variety of species.

High efficiency and energy saving: LED light sources save 50% energy compared to traditional fluorescent lamps and extend their lifespan by 2-3 times .

Safety Compliance : Meets IEC 62471 photobiological safety standards, UV leakage <0.1 mW /cm².

Environmental protection: mercury-free, no harmful gases, compliant with RoHS and CE certification.

2. Spectral parameters

2.1 UVB LED

Wavelength: 290-320nm

Peak: 310nm ± 5nm (optimal vitamin D3 synthesis wavelength).

Spectral distribution: 85% of the energy is between 295-315nm.

Spectral purity: Full width at half maximum (FWHM) <15nm.

Recommended light source: Yuanjing Optoelectronics JY-Z 3535 UVB/ 310

2.2 UVA LED

Wavelength: 350-400nm

Peak: 370nm ± 10nm (optimized for reptile vision and behavior).

Spectral distribution: 50% energy at 360-380nm, 40% at 380-400nm.

Spectral purity: Full width at half maximum (FWHM) <20nm.

Recommended light source: Yuanjing Optoelectronics JY-Z2835UVA/365

3. Strength Configuration

3.1 UVB intensity

Unit of measurement: UV Index (UVI), based on CIE Photobiologically Weighted Irradiance (280-315nm).

Requirements (refer to Ferguson Zone classification):

Desert type (such as bearded dragons and Sulcata tortoises): UVI 4-8, 15-20cm distance.

Tropical types (such as green iguanas and Emeishan snakes): UVI 2-4, 20-30cm distance.

Nocturnal (such as leopard geckos and ball pythons): UVI 0.5-2, 30-40cm distance.

calculate:

UVI = E_eff / 40, E_eff ( mW /m²) = ∫(280-315nm) E(λ) * S(λ) dλ.

Example: UVI 6 requires E_eff ≈ 240 mW /m² ( 0.024 mW /cm² @ 15cm).

Configuration:

5 UVB LEDs (total power 5W), 60° focusing lens (transmittance > 95%)

Coverage: 30cm diameter basking spot , UVI 4-8 @ 15cm, UVI 2-4 @ 30cm.

PWM dimming: 0-100% power, UVI range 0.5-8, step 0.1.

Degradation considerations: Initial output is set to 120% of the target UVI to compensate for 8000 hours of degradation (<20%).

3.2 UVA intensity

Unit of measurement: irradiance ( mW /cm²).

need:

Desert/Tropical: 0.5-1 mW /cm², 15-30cm distance.

Nocturnal: 0.2-0.5 mW /cm², 30-40cm distance.

Configuration:

7 UVA LEDs (total power 3.5W), 120° wide angle, covering a 50cm diameter active area.

4. Species Adaptation

Desert type (such as bearded dragons and sulcata tortoises):

UVB: UVI 4-8, 15-20cm, 12-14 hours of light.

UVA: 0.8-1 mW /cm².

Configuration: 5 UVB LEDs (80-100% power), 7 UVA LEDs (80% power).

Tropical type (such as green iguana , Emeishan snake):

UVB: UVI 2-4, 20-30cm, 10-12 hours of light.

UVA: 0.5-0.8 mW /cm².

Configuration: 4 UVB LEDs (50% power), 6 UVA LEDs (60% power).

Nocturnal (e.g. leopard geckos, ball pythons):

UVB: UVI 0.5-2, 30-40cm, 8-10 hours of light (optional).

UVA: 0.2-0.5 mW /cm².

Configuration: 3 UVB LEDs (20% power), 4 UVA LEDs (30% power).

5. Technical Points

Light source layout:

Array: Hexagonal arrangement, 5 UVB LEDs in the center (2cm spacing), 7 UVA LEDs in the periphery (1.5cm spacing).

Size: diameter 10cm, thickness 2cm (excluding heat sink).

life:

UVB LED: 10,000 hours (attenuation <30%, recommended replacement every 12 months).

UVA LED: 15,000 hours (degradation <10%).

6. Advantages and Applications

Advantages:

High efficiency and energy saving: LED light source saves 50% energy than traditional fluorescent lamps, with a total power of 8.5W, reducing long-term use costs.

Long lifespan: UVB LED 10,000 hours, UVA LED 15,000 hours, reducing replacement frequency.

Safe and environmentally friendly: mercury-free, no harmful gases, compliant with RoHS and CE certification, UV leakage <0.1 mW /cm².

application:

Home reptile box: Suitable for 30-120cm glass or wooden boxes, provides UVB/UVA light, and meets the needs of desert, tropical and nocturnal reptiles .

Professional breeding: support for batch breeding (such as bearded dragon farms )

Pet Store Display: Enhances the display of reptiles , UVA promotes active behavior and increases appeal.

Research use: Provides precise UVI and UVA control, suitable for reptile light physiology research.

Note: The plan is for reference only