Company News

• Waveplate

  2022 / 10 / 24

  Waveplate, also known as phase retarder, is an optical element that changes the polarization state of light by generating an optical path difference (or phase difference) between two mutually orthogonal polarization components. When the incident light passes through different types of parameter wave plates, the outgoing light is different, which can be linearly polarized light, elliptically polarized light, circularly polarized light, etc. The main materials of wave plates are birefringent crystals such as quartz, mica, and calcite. Bohr optics can provide cemented zero-order 1/2 retardation waveplate, cemented zero-order 1/4 retardation waveplate, multi-order 1/2 retardation waveplate, multi-order 1/4 retardation waveplate, etc. Compound Zero-Order Waveplate, also known as compound waveplate, is to glue two multi-stage waveplates together to eliminate the full-wave optical path difference by aligning the fast axis of one waveplate and the slow axis of the other waveplate. Leave the required optical path difference. Gluing the zero-order waveplate can improve the effect of temperature on the waveplate, but it also increases the sensitivity of the retardation of the waveplate to the incident angle and wavelength. The thickness of the Multiple-Order Waveplate is equal to the multiple full wave thickness plus a desired retardation thickness. Multistage waveplates are easy to manufacture, but are sensitive to wavelength, temperature, and incident angle.

• Applied Optics

  2022 / 08 / 08

  The traditional concept of applied optics refers to the theory and design of optical systems through optical instruments (telescopes, microscopes, cameras, projectors), and its contents are mainly geometric optics and wave optics. With the rapid development of optical disciplines, such as the emergence of laser and its wide application, the development of optical fiber communication and optoelectronic imaging technology, and the combination of optics and computer technology, optical instruments have undergone a huge transformation from traditional to modern. The connotation of applied optics, which is the basis of optical engineering, is also expanding, and it is gradually covering the basic content of some modern optics. It is composed of many sub-disciplines closely related to physics; because it has a wide range of applications, there are also a series of sub-disciplines with strong application backgrounds that also belong to the scope of optics. For example, photometry and radiometry related to the measurement of physical quantities of electromagnetic radiation; colorimetry to study the color vision caused by electromagnetic radiation and the measurement of psychophysical quantities with the normal average human eye as a receiver; and many Technical optics: optical system design and optical instrument theory, optical manufacturing and optical testing, interferometry, thin film optics, fiber optics and integrated optics, etc.; there are also branches that intersect with other disciplines, such as astronomical optics, ocean optics, remote sensing optics, Atmospheric optics, physiological optics and weapon optics, etc.

• . Optical microscopes

  2022 / 07 / 21

  Optical lenses made of curved glass or other transparent materials can magnify objects for imaging. Optical microscopes use this principle to magnify tiny objects to a size sufficient for human eyes to observe. Modern optical microscopes usually use two levels of magnification, which are completed by the objective lens and the eyepiece respectively. The object to be observed is located in front of the objective lens, and is magnified by the objective lens in the first stage to form an inverted real image, and then the real image is magnified by the eyepiece in the second stage to form a virtual image, and what the human eye sees is the virtual image. The total magnification of a microscope is the product of the magnification of the objective lens and the magnification of the eyepiece. Magnification refers to the magnification ratio of linear dimensions, not the area ratio.