Handbook of OPTICAL DESIGN

Malacara-Hernández, Daniel; Malacara-Hernández, Zacarías

doi:10.1201/b13894

Cited by 38 publications

(33 citation statements)

References 30 publications

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“…Table 2 shows a summary of the reported differences in axial length and refractive power of zebrafish (Collery et al, 2014) vs. humans (Delori et al, 2011; Heidelberg, 2006a, b; Malaraca-Hernandez and Malaraca-Hernandez, 2003), rats (Chaudhuri et al, 1983) and mice (Remtulla and Hallett, 1985). As the eye gets smaller both axial and focal lengths are reduced concomitantly.…”

Section: Resultsmentioning

confidence: 99%

The adult zebrafish retina: In vivo optical sectioning with Confocal Scanning Laser Ophthalmoscopy and Spectral-Domain Optical Coherence Tomography

Bell

Yuan

DiCicco

et al. 2016

Experimental Eye Research

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Non-invasive imaging is an invaluable diagnostic tool in ophthalmology. Two imaging devices, the scanning laser ophthalmoscope (SLO) and spectral domain optical coherence tomography (SDOCT), emerged from the clinical realm to provide research scientists with a real-time view of ocular morphology in living animals. We utilized these two independent imaging modalities in a complementary manner to perform in vivo optical sectioning of the adult zebrafish retina. Due to the very high optical power of the zebrafish lens, the confocal depth of field is narrow, allowing for detailed en face views of specific retinal layers, including the cone mosaic. Moreover, we demonstrate that both native reflectance, as well as fluorescent features observed by SLO, can be combined with axial in-depth information obtained by SDOCT. These imaging approaches can be used to screen for ocular phenotypes and monitor retinal pathology in a non-invasive manner.

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Section: Resultsmentioning

confidence: 99%

The adult zebrafish retina: In vivo optical sectioning with Confocal Scanning Laser Ophthalmoscopy and Spectral-Domain Optical Coherence Tomography

Bell

Yuan

DiCicco

et al. 2016

Experimental Eye Research

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“…we can obtain the classical Gaussian formula for calculating the posterior vertex focal length F b = t b for thick lenses that is described by Malacara-Hernández [6], and so…”

Section: (I) With a Finite Real Imagementioning

confidence: 99%

Singlet lenses free of all orders of spherical aberration

2015

Self Cite

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This paper describes a method to design families of singlet lenses free of all orders of spherical aberration. These lenses can be mass produced according to Schwarzschild's formula and therefore one can find many practical applications. The main feature of this work is the application of an analysis that can be extended to grazing or maximum incidence on the first surface. Also, here, the authors present some developments that corroborate geometrical optics results, along with the axial thick lensmaker's formula, which can be applicable to any pair of finite conjugate planes for any lens shape (bending) and can be used instead of the classical thick lensmaker's formula, which always assumes that the object is at infinity, to attain better accuracy.

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“…An initial structure is designed to determine the refracting power of each lens group based on paraxial theory and to minimize the third-order aberrations resulting from the curvature at each lens surface [16]. In this study, we designed a fisheye lens scheme suitable for use in our PA system since fisheye lens schemes enable target information to be obtained easily, even when the location of the light source or target changes.…”

Section: Introductionmentioning

confidence: 99%

“…A conventional wide-angle system (fisheye lens system) has a wide field of view and should be of the retro-focus type [16]. In a retro-focus system, the front lens group has a negative refracting power [17].…”

Section: Introductionmentioning

confidence: 99%

A Novel Fisheye-Lens-Based Photoacoustic System

Choi

Ryu

Kim

2016

Sensors

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This paper presents a novel fisheye-lens-based photoacoustic (PA) system. In conventional PA systems, mechanical motors are utilized to obtain the target information due to the small fields of view of such systems. The use of such motors introduces mechanical noise, which is difficult to remove when processing the echo signals. A fisheye lens system offering a wide field of view would effectively reduce the motor effects (i.e., the noise) and enable the system to have a wide field of view. Therefore, in this work, we propose a novel fisheye lens scheme and describe a PA system based on the developed lens scheme. In addition, to confirm the feasibility of the fisheye-lens-based PA system, we present the typical pulse-echo responses obtained using a 20 MHz single element immersion transducer and the echo signals measured from bull’s eye tissue samples separated by approximately 4, 6, 8, and 10 cm diagonally and 2 cm vertically from the fisheye lens. The experimental results demonstrate that the echo signal amplitudes, their center frequencies, and the −6 dB bandwidths obtained using red, green, and blue lights and a fisheye lens are acceptable when the fisheye lens is separated from a sample both diagonally and vertically. Therefore, fisheye-lens-based PA systems could be a potential method of achieving wide fields of view while reducing the mechanical motor effects.

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Handbook of OPTICAL DESIGN

Cited by 38 publications

References 30 publications

The adult zebrafish retina: In vivo optical sectioning with Confocal Scanning Laser Ophthalmoscopy and Spectral-Domain Optical Coherence Tomography

The adult zebrafish retina: In vivo optical sectioning with Confocal Scanning Laser Ophthalmoscopy and Spectral-Domain Optical Coherence Tomography

Singlet lenses free of all orders of spherical aberration

A Novel Fisheye-Lens-Based Photoacoustic System

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