Wide Area Bipolar Cascade Resonant Cavity Light Emitting Diode for a Hybrid Range-Intensity Sensor

Name: Wide Area Bipolar Cascade Resonant Cavity Light Emitting Diode for a Hybrid Range-Intensity Sensor
Brand: Biblioscholar
SKU: 9781249827702
Price: 6852 HUF
Availability: InStock

Szerző: Reginald J Turner

Nyelv:

Kötés: Puha kötésű

Kiadó: Biblioscholar

Elérhetőség: Beszállítói készleten

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This dissertation focused on the development of an illuminator for the HRIS. This illuminator enable...

Információk a könyvről

Szerző

Reginald J Turner

Nyelv

Angol

Kötés

Könyv - Puha kötésű

Kiadva

2012

oldal

198

EAN

9781249827702

ISBN

9781249827702

Enbook ID

08143138

Kiadó

Biblioscholar

Súly

363

Méretek

189 x 246 x 11

Teljes leírás

This dissertation focused on the development of an illuminator for the HRIS. This illuminator enables faster image rendering and reduces the potential of errors in return signal data, that could be generated from extremely rough terrain. Four major achievements resulted from this work, which advance the field of 3-D image acquisition. The first is that the TJ is an effective current spreading layer for LEDs with mesa width up to 140 ?m and current densities of ~ 1 x 106 A/cm2. The TJ allows fabrication of an efficient illuminator, with required geometry for the HRIS to operate as a real-time 3-D imaging system. Secondly, a design for a Bipolar Cascade-Resonant Cavity Light Emitting Diode (BC-RCLED) has been accomplished, that will illuminate the FOV of the hybrid-ranged intensity system with a single sweep of the beam. This device is capable of producing ~ 330 mW of output power. Additionally, from this work, key parameters for HRIS design were identified. Using a collection optic with a 15 cm diameter, an HRIS mounting height of 1.5 m, and a detector integration time of 330 msec, a SNR of 20 dB was achieved. Lastly, we demonstrated that the BC-RCLED designed for the HRIS can deliver sufficient energy to produce the required SNR. Also, through parametric analysis, we determined that a system trade-off, between the collection optic diameter, and the integration time, results in an increase in the SNR from 20 to nearly 50, or extending the operational range from 50 to nearly 130 m.

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Wide Area Bipolar Cascade Resonant Cavity Light Emitting Diode for a Hybrid Range-Intensity Sensor

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