Abstract: An optical imaging lens of the disclosure includes a first lens, a double-plano component, an aperture, a second lens, a third lens and a fourth lens in sequence from an object side to an image side along an optical axis. The first lens to the fourth lens and the double-plano component each include an object-side surface facing the object side and allowing an imaging light to pass through, and an image-side surface facing the image side and allowing the imaging light to pass through. A material of the double-plano component includes glass or plastic. A refractive index of the double-plano component is between 1.450 and 1.850. Refractive powers of the first lens, the double-plano component, the second lens, the third lens and the fourth lens are negative, zero, negative, positive and positive in sequence. Only the four lenses in the optical imaging lens have non-zero refractive power.

Abstract: A flash device including a light-emitting diode array and an optical lens group is provided. The light-emitting diode array includes a plurality of light-emitting diode pixels arranged in an array and independently operable and controllable, wherein the light-emitting diode pixels include a plurality of light-emitting diode pixels of a plurality of different light-emitting colors. The optical lens group includes a plurality of optical lenses, configured to collect, converge, and diverge a light beam from the light-emitting diode array.

Abstract: An image capturing lens sequentially includes a first lens to a seventh lens from an object side to an image side along an optical axis. The first lens has a positive refracting power. The second lens has a negative refracting power. The third lens has a positive refracting power. The fourth lens has a negative refracting power. The fifth lens has a positive refracting power. The fourth lens and the fifth lens form a cemented lens. The sixth lens has a positive refracting power. The seventh lens has a negative refracting power.

Abstract: An imaging lens, sequentially including a first lens element to a seventh lens element from an object side to an image side along an optical axis, is provided. The first lens element has positive refracting power. The second lens element has negative refracting power. The third lens element and the fourth lens element form a cemented lens element, and the cemented lens element has positive refracting power. The fifth lens element has positive refracting power. The sixth lens element has positive refracting power. The seventh lens element has negative refracting power.

Abstract: An eyeshade structure for bilirubin detection includes a body, a first detection module, and a second detection module. The body includes a bottom plate and a side wall. The side wall is connected to the bottom plate and forms an accommodating space with the bottom plate. The first detection module is arranged on the bottom plate. The second detection module is arranged on the bottom plate and is adjacent to the first detection module. The first detection module and the second detection module each include a circuit board, a light-emitting element, an inner photographing element, and an outer photographing element. The circuit board is connected to the bottom plate. The light-emitting element is electrically connected to the circuit board. The inner photographing element is electrically connected to the circuit board. The outer photographing element is electrically connected to the circuit board.

Abstract: A thermal image endoscope system includes a thermal image endoscope catheter and a control device. The thermal image endoscope catheter including: a tube body; a thermal image capturing assembly and a disposing component are positioned at a head part of the tube body, the thermal image capturing assembly captures a thermal image from a shooting area; the disposing component has a disposing area and the disposing area is inside the shooting area; a towing component is connected to the head part. The control device including: a driving component is connected to a towing component, a controller actuates the driving component according to a disposing command received by a receiving component to drive the towing component to tow the head part, and actuates a gate of a light guide assembly to selectively couple or decouple a light pipe of the light guide assembly to the disposing component.

Abstract: The disclosure provides an illumination device including a light-emitting element array, a lens array, an infrared light-emitting element array, at least one light sensing element, and a control unit. The light-emitting element array includes a plurality of micro light-emitting diodes arranged in an array. The lens array includes a plurality of lenses. The infrared light-emitting element array includes a plurality of infrared micro light-emitting diodes arranged in an array form, and the infrared micro light-emitting diodes are respectively configured in the light-emitting element array. Each infrared micro light-emitting diode and the at least one light sensing element are configured to provide a plurality of ranging data. The control unit controls each micro light-emitting diode to generate a plurality of light beams according to the ranging data so as to form a plurality of illumination light beams, and the illumination light beams illuminate a target in a pixelated form.

Abstract: A camera apparatus and a light filling method therefor are provided. The camera apparatus includes an array light source element, an optical lens assembly, a detection unit, a control unit, a camera unit, and a computing unit. The array light source element includes a plurality of light-emitting units. The optical lens assembly is located on a light exit side of the array light source element. The detection unit detects a scene depth profile for the scene. The scene depth profile is divided into a plurality of depth blocks, and the depth blocks are in a one-to-one correspondence with the light-emitting units. The computing unit drives, based on the scene depth profile or a camera mode, the control unit to selectively perform a lighting-up operation on each of the light-emitting units, and controls the camera unit to capture an image of the scene.

Abstract: An image sensor for imaging fingerprints has multiple photodiode groups each having a field of view determined by pinholes of upper and lower mask layers and a metal layer, each field of view being through a microlens. Many photodiode groups have fields of view outwardly splayed from a group having a center-direct field of view. A diameter of pinholes of the metal layer distant from the group having a center-direct field of view have larger diameter than a pinhole of the photodiode group having a center-direct field of view. A method of matching illumination of a group of photodiodes with center-direct field of view to illumination of photodiode groups having outwardly splayed fields of view includes sizing a pinhole in the metal layer of photodiode groups with outwardly splayed fields of view larger than a pinhole associated with of photodiode groups having a center-direct field of view.

Abstract: An image sensor for imaging fingerprints has multiple photodiode groups each having a field of view determined by pinholes of upper and lower mask layers and a metal layer, each field of view being through a microlens. Many photodiode groups have fields of view outwardly splayed from a group having a center-direct field of view. A diameter of pinholes of the metal layer distant from the group having a center-direct field of view have larger diameter than a pinhole of the photodiode group having a center-direct field of view. A method of matching illumination of a group of photodiodes with center-direct field of view to illumination of photodiode groups having outwardly splayed fields of view includes sizing a pinhole in the metal layer of photodiode groups with outwardly splayed fields of view larger than a pinhole associated with of photodiode groups having a center-direct field of view.

Abstract: A variable focus flashlight module including a first lens, a second lens, a third lens, and a light source module sequentially from a magnified side to a minified side along an optical axis of the variable focus flashlight module is provided. The first lens has a negative refracting power. The second lens has a positive refracting power. The third lens has a positive refracting power. The light source module includes multiple light emitting elements arranged in an array. A total length of the variable focus flashlight module is a constant value, and a ratio of a focal length of the second lens to a focal length of the third lens falls within a range of 1.78 to 3.02.

Abstract: A VR equipment includes a casing, and an optical module, an eye movement module, and a display module located inside the casing. The optical module includes a lens barrel and first to fourth lenses located in the lens barrel and arranged in sequence from an object plane to an image plane along an optical axis. The eye movement module is located between the first and second lenses. The eye movement module has a light-emitting unit and a receiving unit. The light-emitting unit emits a detection light to human eyes which is then reflected. The reflected detection light is reflected at an object side surface of the second lens and then enters the receiving unit after passing through an object side surface and an image side surface of the first lens. The display module is at an image side surface of the fourth lens. The display module displays an image.

Abstract: A three-dimensional imaging device includes a lens group configured for gathering light beams to output a first light beam and a second light beam towards a first direction; a beam-splitting prism group provided on a side of the lens group that outputs the light beams for transmitting and reflecting a first light beam and a second light beam; a polarizer group including at least three polarizers provided on a side of the beam-splitting prism group that outputs a light beam; the polarizer group is configured for converting the transmitted light beam or the reflected light beam into a polarized light of a preset polarization angle; and a sensor group including at least three sensors, a position of each sensor corresponds to a position of each polarizer, each sensor is configured to obtain the polarized light of the preset polarization angle output from each polarizer to form an image.

Abstract: A variable focus flashlight module including a first lens, a second lens, a third lens, and a light source module sequentially from a magnified side to a minified side along an optical axis of the variable focus flashlight module is provided. The first lens has a negative refracting power. The second lens has a positive refracting power. The third lens has a positive refracting power. The light source module includes multiple light emitting elements arranged in an array. A total length of the variable focus flashlight module is a constant value, and a ratio of a focal length of the second lens to a focal length of the third lens falls within a range of 1.78 to 3.02.

Abstract: A projection device including a first micro light emitting diode (micro LED) panel, a second micro LED panel, a color combiner prism, and a projection lens is provided. The first micro LED panel includes multiple first micro LEDs arranged in an array. The second micro LED panel includes multiple second micro LEDs and multiple third micro LEDs arranged in an array. The first micro LEDs, the second micro LEDs, and the third micro LEDs respectively emit a first color light, a second color light, and a third color light that are different from each other. The color combiner prism is disposed on a path of the first color light, the second color light, and the third color light to generate an image light. The projection lens is disposed on the path of the image light, and the image light passes through the projection lens and then exits the projection device.

Abstract: A pulse pressure measuring apparatus including a plurality of pressing elements, a plurality of pressure sensors, and a processing unit is provided. The pressing elements are used to press the site to be measured, and each pressing element has a position coordinate Pi (i=1, 2, 3 . . . ). The pressure sensors are configured to respectively measure pressure on the pressing elements to generate measured values of pressure intensity Ii (i=1, 2, 3 . . . ) at the position coordinates Pi (i=1, 2, 3 . . . ). The processing unit utilizes the position coordinates Pi (i=1, 2, 3 . . . ) and the measured values of pressure intensity Ii (i=1, 2, 3 . . . ) to determine the blood vessel locus.

Abstract: The disclosure provides an illumination device including a light-emitting element array, a lens array, an infrared light-emitting element array, at least one light sensing element, and a control unit. The light-emitting element array includes a plurality of micro light-emitting diodes arranged in an array. The lens array includes a plurality of lenses. The infrared light-emitting element array includes a plurality of infrared micro light-emitting diodes arranged in an array form, and the infrared micro light-emitting diodes are respectively configured in the light-emitting element array. Each infrared micro light-emitting diode and the at least one light sensing element are configured to provide a plurality of ranging data. The control unit controls each micro light-emitting diode to generate a plurality of light beams according to the ranging data so as to form a plurality of illumination light beams, and the illumination light beams illuminate a target in a pixelated form.

Abstract: An illuminating device including a light-emitting element array and a plurality of light-diffusing elements is provided. The light-emitting element array includes a plurality of discrete light-emitting areas. The plurality of light-diffusing elements respectively correspond to the light-emitting areas, and each light-diffusing element includes a light-entering surface and a light-exiting surface. The light beams emitted by the light-emitting areas respectively enter the corresponding light-diffusing element via the corresponding light-entering surface. After the light beams respectively leave the corresponding light-diffusing element via the corresponding light-exiting surface, the light beams respectively form a plurality of illumination beams. The illumination beams appear in an array form for illumination.

Abstract: An imaging lens, sequentially including a first lens element to a seventh lens element from an object side to an image side along an optical axis, is provided. The first lens element has positive refracting power. The second lens element has negative refracting power. The third lens element and the fourth lens element form a cemented lens element, and the cemented lens element has positive refracting power. The fifth lens element has positive refracting power. The sixth lens element has positive refracting power. The seventh lens element has negative refracting power.

Abstract: An image sensor for imaging fingerprints has multiple photodiode groups each with field of view through a microlens determined by optical characteristics of the microlens and locations of the microlens and openings of upper and lower mask layers. Many photodiode groups have fields of view outwardly splayed from a center-direct field of view. A diameter of openings of the upper mask layer distant from the group having a center-direct field of view is larger than openings of a photodiode group having a center-direct field of view. A method of matching illumination of a group of photodiodes with center-direct field of view to illumination of photodiode groups having outwardly splayed fields of view includes sizing openings in the upper mask layer of photodiode groups with outwardly splayed fields of view larger than openings in the upper mask layer associated with photodiode groups having center-direct field of view.