1
Brian J Thomas, Timothy W Graham, Daniel C Briggs: Light source having desired color temperature and chromaticity. Welch Allyn, Wall and Roehrig, September 1, 1992: US05144190 (38 worldwide citation)


Apparatus and a method for combining radiant energy of substantially distinct spectral bands to produce a light source having predetermined color temperature or chromaticity characteristics. The apparatus includes a generating source that generates emissions of radiant energy from at least two spati ...


2
Brian J Thomas, Timothy W Graham, Daniel C Briggs: Method of adjusting a light source for color temperature and chromaticity. Welch Allyn, Wall and Roehrig, October 22, 1991: US05059146 (29 worldwide citation)


Apparatus and a method for combining radiant energy of substantially distinct spectral bands to produce a light source having predetermined color temperature or chromaticity characteristics. The apparatus comprises a generating source that generates emissions of radiant energy from at least two spat ...


3
Timothy W Graham, Daniel C Briggs: Low watt metal halide lamp. Welch Allyn, Wall and Roehrig, September 1, 1992: US05144201 (24 worldwide citation)


A metal halide arc discharge lamp is disclosed having a power input rating of not more than 35 watts. The lamp includes an envelope of light transmissive material, such as fused quartz, including a bulb portion, a pair of transitional neck portions extending from the bulb portion, and a pair of stem ...


4
Brian J Thomas, Daniel C Briggs, Michael Avdenko: Bulb geometry for low power metal halide lamp. Welch Allyn, Wall and Roehrig, August 11, 1992: US05138228 (12 worldwide citation)


A low-wattage metal-halide discharge lamp has a tube of the double ended type that forms a bulb or envelope, a pair of electrodes, e.g., an anode and a cathode, which penetrate into an arc chamber inside the envelope, and a suitable amount of mercury plus one or more metal halide salts. The electrod ...


5
Ervin Goldfain, Daniel C Briggs: Medical diagnostic instrument with variable focus liquid lens. Welch Allyn, Hiscock & Barclay, Stephen Rosenholm, June 30, 2009: US07553020 (8 worldwide citation)


A diagnostic instrument includes an illumination system for providing illuminating light and an imaging system for directing the illuminating light to a target and for transmitting light reflected from the target to a viewing location. The imaging system includes an electrically controllable variabl ...


6
Brian J Thomas, Daniel C Briggs, Michael Avdenko: Metal halide discharge lamp with improved shank loading factor. Welch Allyn, Wall and Roehrig, May 26, 1992: US05117154 (8 worldwide citation)


A low-wattage metal-halide discharge lamp has a quartz tube of the double-ended type that forms a bulb or envelope, a pair of electrodes, e.g., an anode and a cathode, which penetrate into an arc chamber inside the envelope, and a suitable amount of mercury plus one or more metal halide salts. The e ...


7
Michael T McMahon, Allan I Krauter, Robert L Vivenzio, Dale C Saddlemire, Dominick Danna, Stephen W Burnett, Daniel C Briggs, Scott G Spanfelner, Jon R Salvati: Welch Allyn, May 7, 2013: US08435175 (4 worldwide citation)


A vaginal speculum apparatus includes a portable illumination assembly that is releasably attached to one of the upper blade and lower blade of a disposable vaginal speculum. The portable illumination assembly is defined by a housing that retains at least one LED and a portable power supply. The por ...


8
Michael T McMahon, Allan I Krauter, Robert L Vivenzio, Dale C Saddlemire, Dominick Danna, Stephen W Burnett, Daniel C Briggs, Scott G Spanfelner, Jon E Salvati: Welch Allyn, Barclay Damon, May 10, 2016: US09332898


A vaginal speculum apparatus includes a portable illumination assembly that is releasably attached to one of the upper blade and lower blade of a disposable vaginal speculum. The portable illumination assembly is defined by a housing that retains at least one LED and a portable power supply. The por ...


9
Daniel C Briggs, Timothy W Graham: Low watt metal halide lamp. Welch Allyn, FU YUAN, February 19, 1992: CN91101204


A metal halide arc discharge lamp with power no more than 35 W includes a casing with a spherical part, a transition neck part, and a pair of pipe-shaped parts. An arcing chamber with outer surface casing wall load no larger than 35 W/cm is formed in the spherical part and is filled with mercury, in ...


10
David J Tufenkjian, Ervin Goldfain, Richard A Tamburrino, Daniel C Briggs, Michael T McMahon: Hybrid surgical headlight system utilizing dual illumination paths and coaxial optics. Welch Allyn, Hiscock & Barclay, December 21, 2006: US20060285316-A1


The invention includes a luminaire especially for medical use. The luminaire provides the user with a solid state integral light source that illuminates the subject while allowing the user to move around untethered. The luminaire further allows the user to connect a remote, high-intensity light sour ...



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