Deep Dive into Optics | Shanghai Optics

Clear Aperture

Posted on: Monday, August 8th, 2022 In: Deep Dive into Optics

During the manufacturing process, a lower quality surface near the edge of an optical component is created. The diameter of the area inside of the optical component that must meet optical requirements (such as surface quality, surface accuracy, coating, etc.) is called the clear aperture. Due to manufacturing constraints, it is impossible to produce a […]

Camera Lens Field of View (FOV)

Posted on: Monday, June 27th, 2022 In: Deep Dive into Optics

Field of view (FOV) is defined as the maximum area that a device can capture. The larger the field of view, the more data can be captured at one time, so it will require fewer images to capture an entire target. FOV is specified in one of two ways: angular field of view and sized […]

Surface Accuracy

Posted on: Tuesday, May 31st, 2022 In: Deep Dive into Optics

Surface accuracy is the measurement of the deviation between the actual shape and the intended shape of an optical surface. Surface accuracy is an important specification of an optical component. Surface accuracy usually is described in terms of fringes or waves that correspond to the interferometer laser wavelength, which is typically 632.8 nanometers for many […]

Objective Lenses

Posted on: Thursday, May 12th, 2022 In: Deep Dive into Optics

An objective lens is an important component of a microscopy or imaging system for a range of science research, biological, industrial, and general lab applications. An objective lens is located closest to the object and plays a central role in imaging an object onto the human eye or an image sensor for discerning the object’s […]

Optical Filters

Posted on: Friday, April 22nd, 2022 In: Deep Dive into Optics

Electromagnetic spectrum covers many wavelength regions from Gamma ray, X ray, ultraviolet (UV), visible light, infrared (IR) to radio wave. Visible light is the portion of the electromagnetic spectrum that the human eye is capable of detecting. Visible light has a wavelength range from 380 to 780nm and different wavelengths appear to human eye as […]