The present disclosure provides an external filter holder arrangement that comprises a pair of filter holding slots to hold two different filters such as barrier filter and excitation filter to thereby fit into any type of xenon source light microscope. The external filters holder design can be used in any type of operative microscopes by altering the dimensions of the slots and the holding mechanism. The external filter holder 100 uses various combinations of filters that can be used in the same module which aids to carry out different surgeries such as angiogram, tumour surgery, urology and thereof. Thus, the external filter holder arrangement 100 is universal, cost-effective and can be customized to various older or base variant xenon light source microscopes.

Changing device for optical components in a microscope, comprising an optical component (12) having a flat surface (13), a carrier (1) for inserting and/or holding the optical component (12), and a receptacle (26) for holding the carrier (1) in an optical path of the microscope, characterized in that the carrier (1) has bearing surfaces (8) for the flat surface (13) of the optical component (1) and positioning surfaces (10) located in the same plane, which are not covered by the optical component (12), when inserting the latter, and the receptacle (26) has bearing surfaces (28) for contact with the positioning surfaces (10), and first attachment means (11) for attaching the carrier (1) positioned on the receptacle (26) in order for the positioning surfaces (10) to act upon the bearing surfaces (28).

A magnetic pass-through controller of an in-helmet display includes internal components inside a helmet. The internal components include a magnet assembly holding one or more internal magnets and a swing arm affixed to the magnet assembly and affixed to the in-helmet display. External components outside the helmet include an external magnet housing holding one or more external magnets and an adjuster for manual rotation. The adjuster is coupled to the external magnet housing such that the manual rotation of the adjuster causes a corresponding rotation of the external magnet housing. Magnetic coupling between the one or more internal magnets and the one or more external magnets causes the corresponding rotation also in the magnet assembly and the swing arm.

A hyperspectral camera based on a continuously variable film filter and a coating method thereof can solve interference between partial bands of the hyperspectral camera based on the continuously variable film filter. The hyperspectral camera includes: a camera body and a detector chip, wherein a continuously variable film is coated on the detector chip; a semi-transmission half-cut filter is provided in front of the continuously variable film, and a distance between the semi-transmission half-cut filter and the continuously variable film is 0 mm. According to the present invention, the semi-transparent half-cut filter and the detector chip are integrated without any gap therebetween. As a result, optical interference caused by incident light sequentially passing through the semi-transparent half-cut filter and the detector chip is greatly reduced, which can reduce distortion of spectral signals, and finally satisfy wide-band application requirements which can be truly realized based on such technology.

An imaging device, an adjustment method, and an adjustment program can acquire multispectral images having good image quality. The imaging device is disposed on an image side of another optical system, and includes a multispectral camera that acquires images in a plurality of wavelength ranges, a field lens that relays the other optical system to the multispectral camera, and an adjustment mechanism that adjusts a conjugate relationship between an emission pupil position of the other optical system and an incident pupil position of the multispectral camera. The multispectral camera includes: a wavelength polarizing filter unit that includes an optical member disposed at a pupil position or near the pupil position and including a plurality of aperture regions having different centroids, a plurality of optical filters arranged in the aperture regions, and a plurality of polarizing filters arranged in the aperture regions; an imaging element; and a processor.

Disclosed herein is a camera module comprising: a circuit board; a frame coupled to the circuit board; an image sensor on the circuit board; a bobbin on the frame, a plurality of lenses being inside the bobbin; a coil wound on the bobbin, the bobbin moving to two directions based on a current applied to the coil; a magnet configured to interact the coil; and a yoke on the frame, the magnet being at an inner side of the yoke, wherein the bobbin moves to a first direction when a forward current is applied to the coil and to a second direction when a reverse current is applied to the coil.

An electronic device includes a carrier substrate having a front face. An electronic chip is mounted on the front face of the carrier substrate and includes an optical component. An encapsulation cover is mounted on top of the front face of the carrier substrate and bounds a chamber within which the chip is situated. A front opening extends through the cover and is situated in front of the optical component. An optical element, designed to allow light to pass, is mounted within the chamber at a position which covers the front opening of the encapsulation cover. The optical element includes a central region designed to deviate the light and having an optical axis aligned with the front opening and the optical component. A positioning pattern is provided on the optical element to assist with mounting the optical element to the cover and mounting the cover to the carrier substrate.

An apparatus for altering quantum of light passing through a lens of a photographic device. The apparatus comprises of a base assembly configured to be detachably coupled to the lens of the photographic device, a first assembly comprising a first filter, a second assembly comprising a second filter and a third assembly comprising a third filter. The first assembly is configured to be detachably coupled to the base assembly. The second assembly is configured to be detachably coupled to the base assembly. The third assembly is configured to be detachably coupled to the base assembly. Combination of the first filter and the second filter forms a first range of neutral density filter and combination of the first filter and the third filter forms a second range of neutral density filter.

An optical system, such as a lithography system, comprises: a plate-shaped component, such as a stop element; an optionally frame-shaped holder for holding the component; and a plurality of webs for connecting the plate-shaped component to the holder. The plate-shaped component is releasably connected to the preferably wire-shaped webs. The plate-shaped component is attached to a carrying structure. The webs are releasably connected to the carrying structure.

The present disclosure provides a lens assembly, including: a lens barrel; a lens group with an optical axis accommodated in the lens barrel; a pressure ring arranged on an image side of the lens group and abutting against the lens group; and an optical filter abutting the pressure ring; where the pressure ring includes a first outer wall and an adhesive storage groove connected to the first outer wall and close to the image side; the lens assembly further comprises an adhering part, where the optical filter and the inner wall are arranged to space apart from each other to form an adhesive filling channel, and the adhering part fills the adhesive filling channel and is connected to the adhesive storage groove, the platform part, the inner wall and the optical filter. Compared with the related art, the above-mentioned lens assembly has a large overall thrust and good reliability.