[OPTICAL REVIEW Vol. 1, No. 1 (1994) 24-26]

Readout of Images on Spatial Light Modulator Using Reading Light Supplier

Hideo KAWAI and Yoshinori TAKEUCHI

Optoelectronics Matsushita Laboratory, Real World Computing Partnership, c/o Advanced Materials Research Laboratory, Matsushita Research Institute Tokyo, Inc., 3-10-1, Higashimita, Tama-ku, Kawasaki, 214 Japan

(Accepted August 15, 1994)

A readout function of a reading light supplier (RLS) is demonstrated by reading out images from an optical addressable spatial light modulator (SLM). The RLS supplies reading light to the reading side of the SLM and transmits readout images from the SLM. The RLS consists of a fiber plate and a redirector which has micro conical-hollows. The RLS contrast, which is the intensity ratio of the reading light to the stray light, is 9.2 and the power efficiency of the reading light supply is about 5%. A writing pattern on the SLM is a checkered pattern of 5 mm×5mm cells, and it is read out successfully using the RLS. The maximum contrast of the readout image is 1.9.

Key words : optical computing, planar optical device, reading light supplier, spatial light modulator, fiber plate