Optical Factors in Judgments of Size through an Aperture

An expression is derived relating retinal image size to object size when the object is seen through a pupil forming an aperture stop for the eye. The image size is related to object position, pupil position, and state of accommodation of the eye on the assumption that the chief ray determines the image of an out-of-focus object. Data obtained by Biersdorf and Baird agree with the expression. The expression is used as the basis of a quantitative discussion of Hennessy's informal experiment and Roscoe's zoom lens hypothesis.

[1]  S N Roscoe.  Judgments of Size and Distance with Imaging Displays , 1984, Human factors.

[2]  F. Toates,et al.  Accommodation function of the human eye. , 1972, Physiological reviews.

[3]  Stanley N. Roscoe,et al.  Bigness Is in the Eye of the Beholder , 1985, Human factors.

[4]  S. N. Roscoe.  When Day Is Done and Shadows Fall, We Miss the Airport Most of All , 1979 .

[5]  D. A. Owens,et al.  Accommodation, convergence, and distance perception in low illumination. , 1980, American journal of optometry and physiological optics.

[6]  J M Enoch,et al.  MARKED ACCOMMODATION, RETINAL STRETCH, MONOCULAR SPACE PERCEPTION AND RETINAL RECEPTOR ORIENTATION * , 1975, American journal of optometry and physiological optics.

[7]  H W Leibowitz,et al.  Night myopia and the intermediate dark focus of accommodation. , 1975, Journal of the Optical Society of America.

[8]  E G HEINEMANN.  Photographic measurement of the retinal image. , 1961, The American journal of psychology.

[9]  J C Baird,et al.  Effects of an artificial pupil and accomodation on retinal image size. , 1966, Journal of the Optical Society of America.

[10]  S N Roscoe,et al.  The moon illusion revisited. , 1983, Aviation, space, and environmental medicine.

[11]  H W Leibowitz,et al.  Anomalous myopias and the intermediate dark focus of accommodation. , 1975, Science.