Compensators of Petzval field curvature and astigmatism

2021 ◽  
Vol 88 (4) ◽  
pp. 175
Author(s):  
L. N. Andreev ◽  
V. V. Ezhova ◽  
E. A. Tsyganok ◽  
A. D. Kozhina
Keyword(s):  
Field Curvature

Theory of electric‐field curvature effects on long‐wavelength drift wave turbulence

1994 ◽  
Vol 1 (5) ◽  
pp. 1142-1153 ◽  
Author(s):  
K. L. Sidikman ◽  
B. A. Carreras ◽  
P. H. Diamond ◽  
L. Garcia
Keyword(s):  
Electric Field ◽  
Wave Turbulence ◽  
Long Wavelength ◽  
Drift Wave Turbulence ◽  
Curvature Effects ◽  
Drift Wave ◽  
Field Curvature

scholarly journals Field-Curvature Correction According to the Curvature of a CMOS Image-Sensor Using Air-Gap Optimization

2015 ◽  
Vol 19 (6) ◽  
pp. 658-664 ◽  
Author(s):  
Jong-Hoon Kwon ◽  
Hyug-Gyo Rhee ◽  
Young-Sik Ghim ◽  
Yun-Woo Lee
Keyword(s):  
Cmos Image Sensor ◽  
Image Sensor ◽  
Air Gap ◽  
Curvature Correction ◽  
Field Curvature

scholarly journals Optical Design for a Head-Mounted Display

1993 ◽  
Vol 2 (3) ◽  
pp. 185-202 ◽  
Author(s):  
Jiantao Ma ◽  
John M. Hollerbach ◽  
Ian W. Hunter
Keyword(s):  
Optical Design ◽  
Field Of View ◽  
Wide Field ◽  
Optical System Design ◽  
Head Mounted Display ◽  
Cost Constraints ◽  
Field Curvature ◽  
Folded Structure ◽  
Wide Field Of View ◽  
Color Field

This paper presents a design concept for a head-mounted display, incorporating color stereo vision using commercial LCDs and our own optical relay design. The focus here is on the optical system design, which must meet specifications for a wide field of view, size and cost constraints, and aberration minimization based on human factors. Two multispherical lens systems are presented and compared, one a straight structure and the other a folded structure, which satisfy the design constraints. Their aberrations (distortion, coma, lateral color, field curvature, and astigmatism) have been well corrected, according to human perceptual constraints explicitly discussed. Each has a 20-mm eye relief and an instantaneous field of view greater than 60°; the former has an exit pupil of 10 mm and the latter of 8 mm.

Aberrations

2019 ◽  
pp. 215-248
Author(s):  
B. D. Guenther
Keyword(s):  
Hubble Space Telescope ◽  
Spherical Aberration ◽  
Chromatic Aberration ◽  
Optical Path Difference ◽  
Path Difference ◽  
Optical Path ◽  
Wavefront Aberration ◽  
Third Order ◽  
The Third ◽  
Field Curvature

Using simple ray tracinig technliques presented in Chapter 6, we demonstrate that a general ray is not focused to the position predicted by paraxial theory. The aberration displayed is spherical aberration. Two methods of measuring aberration: the use of optical path difference to characterize wavefront aberration. The transverse ray coefficients to generate a ray intercept plot. Experimental examples of all the third order aberrations are given. In addition to spherical aberration, they include coma, astigmatism, field curvature, and distortion Only two types of aberration correction are discussed, removal of spherical aberration in the Hubble Space telescope and chromatic aberration. A detailed example of chromatic aberration is given.

Effect of the magnetic field curvature on the generation of zonal flows by drift-Alfvén waves

2007 ◽  
Vol 33 (5) ◽  
pp. 407-419 ◽  
Author(s):  
A. B. Mikhailovskii ◽  
E. A. Kovalishen ◽  
M. S. Shirokov ◽  
V. S. Tsypin ◽  
R. M. O. Galvão
Keyword(s):  
Magnetic Field ◽  
Alfven Waves ◽  
Alfvén Waves ◽  
Zonal Flows ◽  
Field Curvature ◽  
The Magnetic Field

scholarly journals Correction: Optofluidic lens with low spherical and low field curvature aberrations

Lab on a Chip ◽  
2016 ◽  
Vol 16 (11) ◽  
pp. 2135-2135 ◽  
Author(s):  
H. T. Zhao ◽  
Y. Yang ◽  
L. K. Chin ◽  
H. F. Chen ◽  
W. M. Zhu ◽  
...  
Keyword(s):  
Low Field ◽  
Field Curvature

Correction for ‘Optofluidic lens with low spherical and low field curvature aberrations’ by H. T. Zhao et al., Lab Chip, 2016, 16, 1617–1624.

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