Artículo
Abstract:
The effect of intraocular scattering of light generated at a peripheral glare source is quantified using a model empirically formulated in terms of the veiling luminance. This luminance is directly proportional to the illuminance generated at the eye by this source and inversely proportional to the square of the eccentricity angle subtended by the source with the visual axis. In previous articles the effect of brightness reduction due to the presence of a glare source subtending 10° is analyzed and it results that this effect increases when the illuminance generated by the source increases. In the present paper the dependence of brightness reduction on the eccentricity angle of a transient glare source generating 60lux at the eye is investigated. A method of magnitudes comparison, consisting in comparing the perceived brightness of a stimulus of variable luminance presented without glare to that of a reference stimulus presented simultaneously with glare, is employed. For 5 emmetropic young adults it results that, when the angle decreases from 15° to 7.5°, the matching luminance decreases as predicted by the veiling luminance model. This would indicate that the brightness reduction phenomenon is strongly dependent on the veil produced by the glare source. The results obtained are compared to those of other authors found under stable glare conditions. © Sociedad Española de Óptica.
Registro:
| Documento: | Artículo |
| Título: | Brightness reduction as a function of the angular position of a glare source |
| Autor: | Issolio, L.; Matranga, J.; Barrionuevo, P.; Comastri, S.A.; Martin, G.; Colombo, E. |
| Filiación: | Departamento de Luminotecnia, Luz y Visión, Facultad de Ciencias Exactas y Tecnología, Universidad Nacional de Tucumán - CONICET, Av. Independencia 1800, 4000 Tucumán, Argentina Consejo Nacional de Investigaciones Científicas y Técnicas, Av. Rivadavia 1917, C1033AAJ Buenos Aires, Argentina Grupo de Óptica y Visión, Departamento de Física, Universidad de Buenos Aires, Paseo Colón 850, C1063ACV Buenos Aires, Argentina Reichert Inc., 3362 Walden Ave, Depew, NY 14127, United States |
| Palabras clave: | Brightness matching; Glare; Veiling luminance |
| Año: | 2009 |
| Volumen: | 42 |
| Número: | 1 |
| Página de inicio: | 33 |
| Página de fin: | 39 |
| Título revista: | Optica Pura y Aplicada |
| Título revista abreviado: | Opt. Pura. Apl. |
| ISSN: | 00303917 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00303917_v42_n1_p33_Issolio |
Referencias:
- Bichao, I.C., Yager, D., Meng, J., Disability glare: Effects of temporal characteristics of the glare source and the visual-field location of the test stimulus (1995) J. Opt. Soc. Am. A, 12, pp. 2252-2258
- Boynton, R.M., Bush, W.R., Enoch, J.M., Rapid changes in foveal sensitivity resulting from direct and indirect adapting stimuli (1954) J. Opt. Soc. Am, 44, pp. 56-60
- Colombo, E., Barraza, J., Issolio, L., The effect of a brief exposure on brightness evaluation in the scotopic-mesopic range (2000) Lighting Res. Technol, 32, pp. 65-69
- Colombo, E., Comastri, S.A., Issolio, L., Echarri, R., Pupil light reflex produced by glare under mesopic adaptation (2007) J. Light Visual Environ, 31, pp. 70-79
- Crawford, B.H., Visual adaptation in relation to brief conditioning stimuli (1947) Proc. Royal Soc. London B, 134, pp. 283-302
- Fry, G.A., Alpern, M., The effect of peripheral glare source upon the apparent brightness of an object (1953) J. Opt. Soc. Am, 43, pp. 189-195
- Issolio, L., Colombo, E., Barraza, J., The time course of brightness under transient glare condition (2006) J. Opt. Soc. Am. A, 23, pp. 233-238
- Schouten, J.F., Ornstein, L.S., Measurements on direct and indirect adaptation by means of a binocular method (1939) J. Opt. Soc. Am. A, 29, pp. 168-182
- Vos, J.J., Disability glare - A state of the art report (1984) CIE Journal, 3, pp. 39-53
- Comastri, S.A., Martin, G., Pfortner, T., Analysis of pupil and corneal wave aberration data supplied by the SN CT 1000 topography system (2006) Optik, 117, pp. 537-545
- Comastri, S.A., Pérez, L.I., Pérez, G.D., Martin, G., Bastida, K., Zernike expansion coefficients: Rescaling and decentering for different pupils and evaluation of corneal aberrations (2007) J. Opt. A: Pure Appl. Opt, 9, pp. 209-221
Citas:
---------- APA ----------
Issolio, L., Matranga, J., Barrionuevo, P., Comastri, S.A., Martin, G. & Colombo, E. (2009) . Brightness reduction as a function of the angular position of a glare source . Optica Pura y Aplicada, 42(1), 33-39.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00303917_v42_n1_p33_Issolio [ ]
---------- CHICAGO ----------
Issolio, L., Matranga, J., Barrionuevo, P., Comastri, S.A., Martin, G., Colombo, E. "Brightness reduction as a function of the angular position of a glare source " . Optica Pura y Aplicada 42, no. 1 (2009) : 33-39.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00303917_v42_n1_p33_Issolio [ ]
---------- MLA ----------
Issolio, L., Matranga, J., Barrionuevo, P., Comastri, S.A., Martin, G., Colombo, E. "Brightness reduction as a function of the angular position of a glare source " . Optica Pura y Aplicada, vol. 42, no. 1, 2009, pp. 33-39.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00303917_v42_n1_p33_Issolio [ ]
---------- VANCOUVER ----------
Issolio, L., Matranga, J., Barrionuevo, P., Comastri, S.A., Martin, G., Colombo, E. Brightness reduction as a function of the angular position of a glare source . Opt. Pura. Apl. 2009;42(1):33-39.Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00303917_v42_n1_p33_Issolio [ ]
