Optical sensor array in an artificial compound eye

Shiro Ogata; Junya Ishida; Tomohiko Sasano

doi:10.1117/12.179889

1 November 1994 Optical sensor array in an artificial compound eye

Shiro Ogata, Junya Ishida, Tomohiko Sasano

Author Affiliations +

Optical Engineering, Vol. 33, Issue 11, (November 1994). https://doi.org/10.1117/12.179889

Abstract

Optical systems of compound eyes are of great interest in the study of micro-optics. We propose an artificial visual sensor in a model of the apposition eye of an insect. As a key component unit of the visual sensor, a sensor array consisting of 16 x 16 individual optical sensors each with a small view field is fabricated and examined. To achieve both the practical assembly and the compact size of the sensor array, a photodiode array, a glass substrate with a pinhole array, and a group of rod-type gradient-index microlenses are stacked. The optical thickness of the sensor array is 2.9 mm. Because of the low intensity of light received by the photodiode the photocurrent is amplified 10⁷ times in current-to-voltage conversion efficiency. The fabricated sensor array produces a mosaic image with 16 x 16 pixels and eight shades of gray scale. By arranging several of these sensor arrays along a circumference, a wide-field-angle visual sensor similar to a compound eye could be realized.

Citation Download Citation

Shiro Ogata, Junya Ishida, and Tomohiko Sasano "Optical sensor array in an artificial compound eye," Optical Engineering 33(11), (1 November 1994). https://doi.org/10.1117/12.179889

Published: 1 November 1994

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE