SCHOTT Specialty Thin Glass for
3D Imaging and Sensing

Product Information

Visualization and perception are requirements of smart products in the near future. 3D imaging and sensing provide the technologies for replicating human vision via recording depth information, which will enable the digitizing and intelligentializing of future products. Glass as an important solution plays an irreplaceable role in 3D imaging and sensing products.

SCHOTT has a long and rich history of providing glasses used in photographic imaging and sensing. To promote the broader applications of 3D imaging and sensing, SCHOTT has creatively introduced specialty thin glass varieties with excellent performance for applications and components in 3D imaging and sensing. These thin glasses are based on SCHOTT's unique down-draw glass production technology.

SCHOTT specialty thin glass may be employed for Time of Flight (ToF), Structured Light, Stereo Vision, and Dual-camera applications. We capitalize on the unique properties of specialty glasses to aid in the realization of 3D imaging and sensing in the areas of facial recognition, mobile payment, animation, 3D modelling, augmented reality (AR), and virtual reality (VR).

SCHOTT offers a variety of specialty thin glasses that feature different characteristics, thus providing flexibility in the design and manufacture of the sensor and illumination in 3D imaging and sensing. Due to their excellent geometrical properties, optical characteristics and superior surface quality, several of SCHOTT’s thin glasses are employed in various 3D imaging and sensing applications and components.

SCHOTT glass is well suited for use in CMOS covers, IR-cut filters, wafer level packaging, wafer level optics (WLO), diffractive optics elements (DOE) and narrow band filters. It meets demanding standard imaging and sensing requirements and enables various solutions for 3D imaging and sensing components.

Uniqueness of SCHOTT Specialty Thin Glass

High quality enabled by down draw melting process in high volume mass production.
Variable thickness and tight thickness tolerance.
Low total thickness variation (TTV).
Excellent optical properties featuring excellent transmission characteristics in both the visible and infrared spectra.
High stability and reliability. SCHOTT specialty thin glass is highly temperature resistant, chemically stable with good mechanical strength.
Excellent properties for coating, processing and assembly operations.
Environmentally friendly (complies with the regulations of EU-RoHS and EU-REACH).

Capabilites

Enables various solutions for 3D imaging and sensing components.
A broad glass family offers options for meeting the requirements of various 3D imaging and sensing applications and components.
Work closely with customers and have proven reliability in quality high volume manufacturing.
Offer expert guidance, with flexible, professional technical services.

Applications

SCHOTT specialty thin glass can be used in the solutions of Time of Flight (ToF), Structured Light, Stereo Vision and Dual-camera for 3D imaging and sensing. Products that employ specialty thin glasses have many applications in such fields as consumer electronics, automotive, industrial and commercial business, medical and scientific, space and defense business.

SCHOTT Specialty Thin Glass applications in 3D imaging and sensing

CMOS image sensor cover
Wafer Level Packaging (WLP)
Wafer Level Optics (WLO)
IR-cut filter
Narrow band filters
Diffractive Optics Element (DOE)
Camera Lens cover

Main applications are amongst other things:

Display and touch applications (fingerprint sensors, display protection, resistive touch)
Biotech (microscopy slips and slides, microfluidics)
Semicon & sensor (pressure sensors, RF/ MEMS, IC packaging)

Technical Details

Specifications	Unit	Value*
Thickness (Capability)	mm	0.03 - 1.1
Thickness Tolerance**	µm	≤ 10-15 Standard, ≤ 5 Advance
TTV (Total Thickness Variation)**	µm	≤ 10-20 Standard, ≤ 5 Advance
Surface Roughness	nm	< 1 nm RMS
Refractive Index	n_d	1.47 - 1.53
Transmission	t_vD65 in %	> 91
Abbe Value	n_e	58 - 66
CTE a (20 - 300 °C)	10^-6 / °K	3.2 - 9.4
Transformation Point T_g	°C	550 - 735
Density ρ	g/cm³	2.2 - 2.6
Young's Modulus E	kN / mm²	62 - 83
Knoop Hardness	HK 0.1 / 20	430 - 590