3D Body Scanner Mirror Manufacturer

In a 3D body scanning system, the mirror directs structured light or laser patterns onto the subject and collects the reflected signal for triangulation. The optical component must preserve the phase and intensity of the illumination while introducing minimal wavefront distortion. Any deviation in surface flatness or reflectance directly translates to measurement error in the captured point cloud.

Optical Performance Characteristics

Reflectance across the scanning wavelength band determines how much light reaches the subject and returns to the sensor. Typical front‑surface mirrors for body scanning achieve ≥95% reflectance from 400 nm to 1000 nm when coated with enhanced aluminum or protected silver. Wavefront error is kept below λ/10 peak‑to‑valley at 632.8 nm to ensure that the projected pattern remains geometrically accurate.

Scatter and ghost reflections are minimized by using a low‑roughness polished surface (RMS < 5 nm) and applying a black‑ened edge treatment to suppress stray light. These specifications allow the scanner to maintain a measurement repeatability of under 0.5 mm over a 2 m scanning volume.

Mechanical Design and Substrate Options

The mirror substrate is selected based on thermal stability, weight, and compatibility with the scanning enclosure. Common choices include BK7 glass for ambient‑temperature environments, fused silica for low‑expansion requirements, and silicon for lightweight, high‑speed scanning heads. Thickness typically ranges from 6 mm to 12 mm, providing sufficient rigidity to resist deformation under mounting loads.

Mounting features consist of precision‑ground reference surfaces, threaded inserts, or kinematic pads that enable repeatable positioning within 5 µm. Edge blackening and optional protective overcoats increase durability against handling and environmental exposure.

Material and Coating Choices

• Substrates: BK7, fused silica, silicon, Zerodur (upon request)
• Coatings: enhanced aluminum (Al+SiO₂), protected silver (Ag+SiO₂), dielectric high‑reflectance stacks (SiO₂/TiO₂)
• Optional protective layers: diamond‑like carbon (DLC) or sol‑gel anti‑abrasion overcoat for harsh environments

Each coating combination is characterized by its reflectance curve, laser damage threshold, and humidity resistance. For example, a protected silver coating delivers >98% reflectance in the near‑infrared (800‑1000 nm) with a damage threshold of 5 J/cm² at 1064 nm, making it suitable for pulsed laser scanners.

Typical Specifications Table

Applications in 3D Body Scanning

Body scanners rely on uniform illumination of the subject's surface to capture accurate geometry. The mirror must redirect the structured light pattern without introducing chromatic aberration or polarization shifts that could confuse the phase‑measuring sensor. By maintaining a constant reflectance across the visible and near‑infrared spectrum, the scanner can use a single illumination source for both texture and depth acquisition.

In addition, the mirror’s low scatter ensures that secondary reflections do not create ghost points in the reconstructed point cloud, a critical factor when scanning clothing or reflective accessories. The mechanical stability of the mount guarantees that the optical axis remains aligned during the subject’s natural sway, preserving measurement repeatability.

Quality Assurance and Testing

Each mirror undergoes interferometric surface figure measurement to verify λ/10 flatness across the clear aperture. Surface roughness is confirmed with atomic force microscopy, and reflectance is validated using a spectrophotometer integrating sphere. Environmental testing includes thermal cycling (‑20 °C to +70 °C) and humidity exposure (85 % RH, 1000 h) to ensure coating adhesion and substrate integrity.

Final inspection reports include scratch‑dig classification (MIL‑PRF‑13830B), laser damage threshold, and wavefront error maps. These data are provided to the customer upon request, supporting traceability and facilitating ISO 9001 audit requirements.

Customization Options

Mirror geometry can be tailored to the scanner’s optical layout: rectangular, circular, or off‑axis paraboloid shapes are achievable through CNC grinding and polishing. Clear aperture, thickness, and edge treatments are adjusted according to mounting constraints and required field of view. Coating designs can be shifted to emphasize specific bands—for example, enhancing reflectance at 940 nm for infrared‑based systems while maintaining visible‑range performance for texture capture.

Additional features such as integrated fiducial marks, anti‑reflection coatings on the rear surface, or vacuum‑compatible outgassing‑low materials are offered for specialized installations. Lead times for custom mirrors typically range from 4 to 6 weeks after design approval, depending on coating complexity and substrate availability.

Frequently Asked Questions

• Can the mirror dimensions be customized? Yes, clear aperture and thickness are adjusted per drawing; standard ranges are 50 mm–200 mm diameter and 6 mm–12 mm thickness.
• What information is needed for a quotation? Required details include substrate material, desired coating, clear aperture, surface flatness tolerance, mounting features, and any environmental constraints.
• Which coating offers the best near‑infrared performance? Protected silver coatings provide ≥98% reflectance from 800 nm to 1000 nm with high laser damage tolerance.
• How is coating durability verified? Adhesion is measured by ASTM D3359 tape test; humidity resistance is evaluated per MIL‑STD‑810G; accelerated aging tests are available on request.
• What packaging methods protect the optics during shipment? Mirrors are placed in individual static‑dissipative pouches, then secured in foam‑lined crates with shock‑absorbing corners; humidity indicator cards are included.
• What is the typical production lead time? Standard catalog items ship within 2 weeks; custom parts require 4–6 weeks after design freeze.

Get in Touch

For detailed specifications, quotation requests, or to discuss a custom mirror solution for your 3D body scanning application, please contact the engineering team. Provide your system’s wavelength range, incident angle, and mounting interface to receive a tailored recommendation.