5 results about "Optical resolution" patented technology

The invention relates to a light and miniature big-target-surface low-light lens, and the lens comprises a front lens group A, a diaphragm B and a rear lens group C, wherein the front lens group A, the diaphragm B and the rear lens group C are sequentially arranged in an incident direction of an optical path. The front lens group A includes a positive meniscus lens A1, a negative meniscus lens A2,a biconcave lens A3 and a biconvex lens A4, wherein the positive meniscus lens A1, the negative meniscus lens A2, the biconcave lens A3 and the biconvex lens A4 are sequentially arranged in an incident direction of the optical path. The biconcave lens A3 and the biconvex lens A4 are in close connection with each other as a first bonding group. The rear lens group C includes a biconcave lens C1, abiconvex lens C2, a biconvex lens C3, a plano-convex lens C4 and a negative meniscus lens C5, wherein the biconcave lens C1, the biconvex lens C2, the biconvex lens C3, the plano-convex lens C4 and the negative meniscus lens C5 are sequentially arranged in an incident direction of the optical path. The biconcave lens C1 and the biconvex lens C2 are in close connection with each other as a secondbonding group. The invention also relates to an imaging method of the lens. The lens is reasonable in design, effectively improves the imaging quality under the requirement of the large target surfaceof the lens, reduces the number of optical lenses, and realizes light and miniature lens. The lens has strong light collecting and light transmitting ability, and the target surface of the lens is large. The lens is high in optical resolution, is large in angle of view, and is large in observable range.

This invention relates to a tube lens compatible with high-NA objectives, a rapid automated optical inspection system and method. The tube lens includes a lens assembly comprising a first cemented lens with positive optical power, a second cemented lens with negative optical power, and a third cemented lens with positive optical power, arranged sequentially along the principal optical axis. The first cemented lens is disposed on one side of the object being tested. The first cemented lens comprises a first lens and a second lens cemented together; the second cemented lens comprises a third lens and a fourth lens cemented together; and the third cemented lens comprises a fifth lens and a sixth lens cemented together. The design of this invention enables a 1.4X tube lens, compatible with high-NA objectives. Its lens assembly includes multiple cemented lenses forming a positive-negative-positive structure, which improves the pixel resolution, optical resolution, and minimum defect size detection capability. It also has a long front working distance, adaptable to both vertical and horizontal inspection optical paths.

This invention discloses a non-contact device and method for inspecting the appearance of the inner surface of a hole. The device can be functionally divided into a motion control section and an image acquisition section. The motion control section includes a single-axis displacement stage, a single-axis rotary stage, a two-dimensional alignment stage, and a motion controller. The image acquisition section includes an industrial microscope head, an industrial camera, a video tube, and an LED lighting source. The measurement process includes the following steps: 1) calibrating the measuring device using a high-precision optical resolution plate; 2) calibrating the two-dimensional alignment stage using circular markers; 3) calibrating the rotation center position using a laser; 4) aligning the hole to be measured with the probe based on the calibration results; 5) initiating automatic image acquisition and stitching; and 6) calculating the actual size of the defect and its position within the hole. This invention can achieve panoramic defect inspection of the inner wall of blind holes or countersunk holes with diameters of 4mm-8mm and depths <45mm.

The application relates to the field of microscopes, in particular to a laser scanning confocal microscope which comprises a light splitting mechanism, multiple filter systems and multiple detection systems, the light splitting mechanism is used for transmitting fluorescent beams with different wavelengths to different filter systems, the filter systems correspond to the detection systems one by one, each filter system is matched with a different wavelength range, is used for filtering stray light emitted by a non-focal plane doped in the fluorescent beam, and the detection system is used for receiving the fluorescent beam leaving the filter system and converting to obtain an electric signal. Different wavelengths of fluorescent light are transferred to different filter systems for processing through the light splitting mechanism, at this time, the wavelength range matched by the filter system is small, and the optical resolution of all wavelength bands is ensured to reach the best state.

This invention relates to the field of optical imaging technology and discloses a dual-band co-aperture fusion imaging optoelectronic payload optical system, comprising: a shared sapphire optical window, a shared dichroic mirror, a visible light straight-tube optical path, and a mid-wave infrared U-shaped optical path arranged sequentially from the object side to the image side; the visible light straight-tube optical path and the mid-wave infrared U-shaped optical path have the same optical field of view, the same optical resolution, and the same optical distortion. In this invention, the object-side beam passes through the same front sapphire optical window, causing the two optical axes to coincide. The dichroic mirror then simultaneously separates the incident beam into the visible light path and the mid-wave infrared optical path, achieving co-aperture and real-time acquisition of dual-band signals, enabling parallax-free fusion imaging of targets at any distance. This invention possesses excellent anti-interference capabilities, multi-dimensional information fusion enhancement effects, and dual-band anti-interference capabilities, and can be mounted on various unmanned intelligent devices, optoelectronic turrets, and optoelectronic pods.