| Autor: |
William Alden Crossland, M.J. Lee, Adrian P Sparks, Anthony Bernard Davey, Steven Wright, C. P. Judge |
| Rok vydání: |
1991 |
| Předmět: |
|
| Zdroj: |
SPIE Proceedings. |
| ISSN: |
0277-786X |
| DOI: |
10.1117/12.44702 |
| Popis: |
A transmissive, analogue, active backplane electrically addressed SLM using chiral smectic liquid crystals is described with CdSe TFT's to switch the pixels. The device consisted of a matrix of 200 im x 200 im pixels forming 128 rows by 190 columns.The liquid crystal used was 854E (BDH Ltd. England) which allowed observation of the device behaviour inboth the smectic C* (ferroelectric switching) and smectic A (electrocinic effect switching) liquid crystal phases. Someobservations are made concerning each of these. 1. INTRODUCTION There are a number of areas in optical signal processing and optical computing where Spatial Light Modulators (SLMs) with an analogue response might offer potential advantages over purely binary devices. These areas include neural networks, which require the summation and threshoicling oflarge numbers of weight interconnects; analogue linear algebra processors (eg. matrix vector multipliers) and coherent light optical correlators for image analysis and |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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