Dr. Mark J. Davis
Senior Principal Scientist at SCHOTT North America Inc
SPIE Involvement:
Author | Instructor
Publications (16)

Proceedings Article | 7 March 2019 Presentation + Paper
Proc. SPIE. 10896, Solid State Lasers XXVIII: Technology and Devices
KEYWORDS: Refractive index, Photoelasticity, Thermal optics, Silica, Polarization, Interferometers, Cameras, Glasses, Laser glasses, Protactinium

Proceedings Article | 17 September 2018 Presentation + Paper
Proc. SPIE. 10745, Current Developments in Lens Design and Optical Engineering XIX
KEYWORDS: Chalcogenide glass, Refractive index, Optical design, Fabry–Perot interferometers, Sensors, Glasses, Solids, Infrared radiation, Selenium, Temperature metrology

Proceedings Article | 21 April 2017 Presentation
Proc. SPIE. 10082, Solid State Lasers XXVI: Technology and Devices
KEYWORDS: Defense and security, Optical fibers, Surgery, Signal attenuation, Retina, Laser applications, Solid state lasers, Optical communications, Erbium, Fiber optic communications

Proceedings Article | 16 February 2017 Presentation + Paper
Proc. SPIE. 10100, Optical Components and Materials XIV
KEYWORDS: Long wavelength infrared, Mid-IR, Near infrared, Short wave infrared radiation, Chalcogenide glass, Refractive index, Transparency, Thermal optics, Glasses, Germanium, Infrared radiation, Selenium, Arsenic, Temperature metrology, Absorption

Proceedings Article | 31 October 2014 Paper
Proc. SPIE. 9237, Laser-Induced Damage in Optical Materials: 2014
KEYWORDS: Refractive index, Photoelasticity, Thermal optics, Glasses, Nd:YAG lasers, Adaptive optics, Distortion, Finite element methods, Rod lasers, Laser glasses

Showing 5 of 16 publications
Proceedings Volume Editor (1)

SPIE Conference Volume | 2 November 2001

Conference Committee Involvement (2)
Optical Materials and Structures Technologies
4 August 2003 | San Diego, California, United States
Inorganic Optical Materials III
2 August 2001 | San Diego, CA, United States
Course Instructor
SC1179: Optical Glass – Properties and Application-oriented Specification
Optical glass provides a central function in optical systems: the precisely defined refraction of light with the highest throughput. Large parts of the optical industry depend on this key material. Microscopes, binoculars, cameras, and projectors constitute examples that are unthinkable without optical glass. Their properties, however, differ considerably from those of other technical materials such as metals or plastics. Datasheet values of refractive index extend to five decimal places (e.g. 1.51680) and homogeneity might be specified to even two more digits (e.g. 2x10-7). This extreme precision sets optical glass apart from most other materials. For optical glass users it is important to know facts about its production and properties in order to specify optical elements adequately. Engineering drawing requirements must ensure sound function of the optical system but should do so without over-specifying various attributes which might lead to higher costs, delivery time delay, or even non-availability. Application formats extend from the millimeter range up to about one meter. For small parts, glass properties are usually not expected to be critical. Most properties, however, do not scale up linearly with the sample size. For large lenses and prisms, different scaling laws of glass properties must be taken into consideration in order to obtain suitable quality. For designing and purchasing of optical elements it is very useful to know the technical conditions of producing, post-processing, quality inspection, and application of optical glass. This course provides knowledge about glass types and properties, including definitions, tolerances, and measurement methods. Relevant properties to be discussed include refractive index, dispersion, transmission, homogeneity, striae, stress birefringence. Also covered are production processes and their influences on glass properties, raw glass delivery formats. The course covers specification of lenses and prisms for optical systems according to the international standards ISO 10110 (optical elements) and ISO 12123 (raw optical glass). Finally, availability of optical glasses and restrictions thereof due to technical, economic, and regulatory reasons are covered.
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