40 Nutmeg Lane
Glastonbury, CT 06033
Tel: (860) 657-9014

Email: thought@Thoughtventions.com

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Thoughtventions Optical Research Projects

Sapphire Fiber Optic Imaging (2015-2022)

Thoughtventions is developing a technique where images can be transmitted through a single multimode sapphire fiber.

Small High Pressure Moderate Temperature Optical Cell (2002-2022)

Sapphire viewport cell that operates up to 5000 psi and temperatures up to 700°C.

Transparent Furnaces (1994-2022)

Thoughtventions sells multizone transparent furnaces operating up to 1200°C. This type of furnace uses a very thin gold coated outer tube that reflects radiant heat while allowing visibility.

Furnace and Combustion System Viewports (1995-2022)

Viewports for high temperature and pressure systems.

Optical Polishing (1982-2022)

Polishing of sapphire for increased strength. Polishing sapphire fibers for inclusion in devices. Colloidal silica polishing.

Radiant Heat Transfer (1993-2022)

Reduction of radiant heat tranfer for furnace improvement.

Ray Tracing (1973-2022)

Used to develop a non-imaging light concentrator - in 1975.

Sapphire Fiber Cladding (2005-2022)

High temperature sapphire fiber cladding.

Optical Breakdown Pressurized Furnace (2021)

Sapphire viewport furnace that operates up to 1000 psi and temperatures up to 700°C.

Solar Heated Devices (2020)

Developed Solar Furnace, Solar Heated Particle heat storage system.

Commercial Sapphire Viewport (2018)

Thoughtventions developed and successfully tested an inexpensive sapphire viewport - but was unable to find a way to market it.

Nuclear Sapphire Fiber Detector (2014)

Created and sold a long sapphire fiber detection system to transfer data from a high radiation environment.

Sapphire as a Mobile Phone Faceplate (2013)

Experiments and feasibility research were performed to determine whether sapphire could be made into faceplates for mobile phones.

Fiber Optic Slip Ring (2013)

Designed a non-contact fiber optic slip ring

1000°C Cesium Optical Cell (2012)

Click here for an image.

A high vacuum cell was fabricated to optically examine cesium vapor. An internally triggered ampoule breaker apparatus supplies cesium once the system is under vacuum. A heater furnace supplies cesium at a controlled pressure. The centerpiece of the apparatus is a sealed sapphire window that can cycle to 1000°C enclosed in a furnace using a Thoughtventions temperature controller.

Infrared Heated Furnace (2008)

Thoughtventions developed, built, and sold an infrared lamp heated furnace.

Sapphire Fiber Optic Chemical Sensor (2008)

Developed and demonstrated techniques for reliably coiling a 50 micron diameter sapphire fiber around a small diameter core without breaking. The fiber was then sealed into a vacuum fitting and microdot fiber connectors attached to form a complete optical chemical sensor.

Optical BandPass Filter Design (2006)

Used a commercial program to specify the materials appropriate to make a multilayer bandpass optical filter.

Sapphire Fiber Bonding System (2006)

Developed a Sapphire Fiber Bonding System to adapt 2 diameter sapphire fibers with low loss.

High Temperature Droplet Imaging Furnace (2005)

Tube furnace designed to image molten metal droplets.

High Temperature Droplet Imaging Furnace High Temperature Droplet Imaging Furnace

Vacuum Camera Mod (2005)

Thoughtventions was approached with the question as to whether a standard video camera could be operated in a vacuum. Thoughtventions demonstrated that the camera operated without problems under high vacuum, only having to be modified with a heat sink to the external structure to remove the heat generated by the electronics.

In Flight Imaging Systems for Hypervelocity and Reentry Vehicles (2004)

Sapphire window imaging system for high stress high speed vehicles.

HID Lamp Bulb (2004)

Thoughtventions developed a sealed sapphire/alumina bulb for an HID (High Intensity Discharge) lamp.

NASA Camera Mod (2004)

After the Space Shuttle disaster, NASA solicited to modify a standard high speed camera so that it could operate with cooling, sealed in a low pressure environment. This type of camera was required to perform Back-to-Flight testing of shuttle components. Thoughtventions successfully sealed the multipin connected camera and provided umbilical internal cooling.

Inset Runway Flasher (2000-2004)

This was a project for the FAA that developed a high intensity inset (buried) runway flasher. This inset flasher meets above runway flasher specifications, but is buried in the center of a runway so that planes and snowplows can operated over it. The flasher emits a directed bright flash to guide planes into the runway. The challenge was to guide a large amount of flash energy at a low forward angle through a small window.

Inset Runway Flasher Inset Runway Flasher

Infrared Flow Meter (2003)

Investigated the use of an infrared gas detector to measure flow rate.

Auxilliary Optical Heating for Controlled Crystal Growth (2002)

Used fiber optic heat transfer to control the interface shape of a growing crystal.

High Temerature Sapphire Fiber Optic Temperature Sensor (2002)

Thoughtventions developed a coated tip sapphire high temperature fiber optic temperature sensor.

High Power Laser Windows (2001)

Using ultra polished sapphire to increase the laser damage threshhold of windows.

Diamond Windows (2000)

Investigation of properties and use of diamond windows.

Sapphire High Power Microwave Windows (1995-1999)

Design and demonstrated high power (1 MW) sapphire windows.

Sapphire Fiber Optic Imaging Bundle (1997)

Demonstrated a sapphire fiber optic imaging bundle operating at 1000 C

Laser Polishing of Plastics (1996)

Investigated using a CO2 laser to polish plexiglas/plastics. IR optics.

Visual Monitoring of Metal Injection Molding (1995)

Used a far-focus microscope to image and monitor debinding and sintering of parts in a furnace.

Sapphire Fiber Optic Imaging Bundle (1993)

Demonstrated a sapphire fiber optic imaging bundle operating at 1000 C

FT-IR Hadamard Tomography of Sooting Flames (1993)

Combined a FT-IR instrument with Hadamard Tomography to measure 2D chemical species and temperature in a Sooting Flame

FTIR Monitoring of Combustion Systems(1992)

Used FTIR to monitor and diagnose a variety of combustion and chemical systems

High Strength Sapphire Windows (1992)

Developed and demonstrated a technique to greatly strengthen sapphire windows.

In-Situ FT-IR Diagnostics for Coal Liquefaction Processes (1992)

Used a FT-IR instrument to detect chemical processes using evanescent sensing.

Visualization Engine Diagnostics (1985-1990)

Developed and used a high speed video system to record flame images. Developed and used a phosphorescing tracer 3D flow imaging system.

Particle Velocimetry (1988)

Investigated the use of Particle Velocimetry in the Visualization IC Engine.

Sapphire Cylinder Full Scale Internal Combustion Engine (1983-1990)

Designed, built and operated a visualization IC engine with a sapphire cylinder liner and quartz piston top.

Dye Laser Fluorescence Spectroscopy on the Doublet III Tokamak (1982)

2-photon spectroscopy plasma measurements.

X-Ray Detection (1981)

X-Ray plasma property detection on the ISX-B Tokamak fusion experimental plasma device.

H alpha Detector (1980)

Designed, built and operated an H alpha detector on the ISX tokamak fusion device

Designed and Operated a Phosporescing Flow Imaging System (1972-1977)

Demonstrated and used (thesis) a Flashlamp driven UV optically pumped tracer to image turbulent mixing. Image intensified 2-D scene detection.

Light Emitting Flow Tracers (1975)

Investigated the use of fluorescent and phosphorescent particles as flow tracers.

Light Concentrator (1975)

Designed and demonstrated a non-imaging optic to concentrate light.

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Last updated: October 2022