Abstract: An optical lens used for fundus photography includes a first plastic aspheric lens with a positive refractive power, a second plastic aspheric lens, a third plastic aspheric lens, and a fourth plastic aspheric lens with a positive refractive power arranged in order from an object side to an image side. The number of lenses with refractive powers is less than 9, each lens of the optical lens is a singlet lens, a length between respective optical centers of outermost lens surfaces at opposite ends of the optical lens is within a range of 50 mm to 130 mm, and a back focal length is greater than 20 mm.

Abstract: A display device includes a display panel and a backlight module. The backlight module is arranged under the display panel. The backlight module includes a matrix of light sources and a reflective sheet. The reflective sheet is disposed around or on at least one corner of the matrix of light sources. The reflective sheet has an upper edge, a reflective surface and a lower edge. The upper edge is far away from the matrix of light sources relative to the lower edge. A light conversion coating having a plurality of dots of different sizes is formed on the reflective surface. The matrix of light sources emits a first light toward the reflective sheet, and the first light is changed by the light conversion coating to form a second light, wherein the first light and the second light are of different colors.

Abstract: A display device includes a display panel and a backlight module. The backlight module is arranged under the display panel. The backlight module includes a matrix of light sources and a reflective sheet. The reflective sheet is disposed around or on at least one corner of the matrix of light sources. The reflective sheet has an upper edge, a reflective surface and a lower edge. The upper edge is far away from the matrix of light sources relative to the lower edge. A light conversion coating having a plurality of dots of different sizes is formed on the reflective surface. The matrix of light sources emits a first light toward the reflective sheet, and the first light is changed by the light conversion coating to form a second light, wherein the first light and the second light are of different colors.

Abstract: The present invention relates to a method for size estimation by image recognition of a specific target using a given scale. First, a reference objected is recognized in an image and the corresponding scale is established. Then the specific target is searched and the size of the specific target is estimated according to the acquired scale.

Abstract: An imaging lens including an aperture and a lens with refractive power arranged from a zoom-in side to a zoom-out side along an optical axis is provided. The aperture includes a substrate and a light-shielding layer. The substrate includes a first middle region and a first outer edge region surrounding the first middle region. The first outer edge region allows visible light and infrared light to substantially pass therethrough. The light-shielding layer includes a second middle region and a second outer edge region surrounding the second middle region. The second outer edge region allows infrared light to substantially pass therethrough and substantially shields visible light. A thickness of the aperture is between 0.01 mm and 0.3 mm along a direction of an optical axis. Furthermore, an imaging lens and a manufacturing method of a light-shielding element are also provided.

Abstract: A lens including a filter, an aperture stop, and a lens set sequentially arranged along a first direction is provided. The filter includes a central region and a peripheral region. The central region has a first light transmission band for a wavelength range of a visible light and a second light transmission band for a wavelength range of an infrared light. The peripheral region surrounds the central region. The peripheral region has a third light transmission band for the wavelength range of the infrared light and is substantially opaque to the visible light, and an area of one portion of the central region surrounded by the peripheral region is tapered toward the first direction.

Abstract: A light source module includes a circuit substrate, a plurality of light emitting units, a plurality of microstructures and a wavelength converting layer. The circuit substrate includes a first surface and has a recessed portion recessed inwardly from the first surface. The circuit substrate forms a bottom and a sidewall in the recessed portion. The light emitting units are disposed on the bottom and located in the recessed portion. The microstructures are disposed on at least one of the bottom and the sidewall. The wavelength converting unit covers the light emitting units, and fills the recessed portion.

Abstract: A display device including a display panel, a light guide plate and a light emitting module is disclosed. The light guide plate is opposite to the display panel and has a light incident surface. The light emitting module emits a light to the light incident surface. The light emitting module includes a substrate, multiple first light emitting elements and multiple second light emitting elements. The first light emitting elements are disposed on the substrate along the first direction and divided into multiple first luminous areas. Each first luminous area includes at least two first light emitting elements. The second light emitting elements are disposed on the substrate along the first direction and divided into multiple second luminous areas. Each second luminous area includes at least two second light emitting elements. The first and second luminous areas are staggered along the second direction perpendicular to the first direction.

Abstract: The present invention relates to a method for size estimation by image recognition of a specific target using a given scale. First, a reference objected is recognized in an image and the corresponding scale is established. Then the specific target is searched and the size of the specific target is estimated according to the acquired scale.

Abstract: A backlight module includes a circuit board, a plurality of light emitting units, a support frame, a reflector, and a diffusion plate. The light emitting units are disposed on the circuit board. The support frame includes a plurality of first support members, wherein the first support members are disposed on the circuit board in parallel. The reflector is disposed on the support frame. The reflector includes a plurality of reflecting grids, wherein the reflecting grids are accommodated between the first support members and the light emitting units are located in the reflecting grids. The diffusion plate is disposed above the reflector.

Abstract: An imaging lens including an aperture and a lens with refractive power arranged from a zoom-in side to a zoom-out side along an optical axis is provided. The aperture includes a substrate and a light-shielding layer. The substrate includes a first middle region and a first outer edge region surrounding the first middle region. The first outer edge region allows visible light and infrared light to substantially pass therethrough. The light-shielding layer includes a second middle region and a second outer edge region surrounding the second middle region. The second outer edge region allows infrared light to substantially pass therethrough and substantially shields visible light. A thickness of the aperture is between 0.01 mm and 0.3 mm along a direction of an optical axis. Furthermore, an imaging lens and a manufacturing method of a light-shielding element are also provided.

Abstract: A wearable device and a power saving method are proposed. The wearable device includes a sensor and a first processing unit. The sensor has a buffer. The first processing unit is coupled to the sensor. The first processing unit in a first hibernate mode is woken up after receiving a first signal, wherein the first processing unit includes an interrupting module. The interrupting module makes the first processing unit enter the first hibernate mode after commands, in response to the first signal, the sensor to start sensing so as to generate sense data, wherein the sensor wakes up the first processing unit from the first hibernate mode based on an amount of the sense data exceeding a threshold of the buffer, and the first processing unit enters the first hibernate mode after processing the sense data.

Abstract: A wearable device and a power saving method are proposed. The wearable device includes a sensor and a first processing unit. The sensor has a buffer. The first processing unit is coupled to the sensor. The first processing unit in a first hibernate mode is woken up after receiving a first signal, wherein the first processing unit includes an interrupting module. The interrupting module makes the first processing unit enter the first hibernate mode after commands, in response to the first signal, the sensor to start sensing so as to generate sense data, wherein the sensor wakes up the first processing unit from the first hibernate mode based on an amount of the sense data exceeding a threshold of the buffer, and the first processing unit enters the first hibernate mode after processing the sense data.

Abstract: A backlight module includes a circuit board, a plurality of light emitting units, a support frame, a reflector, and a diffusion plate. The light emitting units are disposed on the circuit board. The support frame includes a plurality of first support members, wherein the first support members are disposed on the circuit board in parallel. The reflector is disposed on the support frame. The reflector includes a plurality of reflecting grids, wherein the reflecting grids are accommodated between the first support members and the light emitting units are located in the reflecting grids. The diffusion plate is disposed above the reflector.

Abstract: A headset including a speaker, a motion sensor, a transceiver, and a processor is provided. The speaker plays audio data. The motion sensor senses a posture of a user to generate first sensing data. The transceiver performs data transmission with an external device. The processor is coupled to the motion sensor and the transceiver. The processor determines whether the posture is correct according to the first sensing data to generate an output result and transmits the output result through the transceiver.

Abstract: A display apparatus includes a transparent substrate, light emitting units, and an opaque film. The transparent substrate includes a first transparent surface and a second transparent surface opposing to the first transparent surface. The light emitting units are disposed over the first transparent surface. The opaque film covers on at least one of the first transparent surface and the second transparent surface.

Abstract: A display apparatus and a manufacturing method for the same. The display apparatus includes a first display device and a second display device. The first display device includes a first circuit board, first display pixels and a first opaque rubber. The first display pixels are electrically connected on the first circuit board. The first opaque rubber includes a first outer border rubber portion outside the first display pixels; and a first spacer rubber portion in a gap space between the first display pixels. The second display device includes a second circuit board, second display pixels on the second circuit board and a second opaque rubber including a second outer border rubber portion outside the second display pixels. The first display device and the second display device are stitched together. The first outer border rubber portion and the second outer border rubber portion are faced and adjacent to each other.

Abstract: A lens including a filter, an aperture stop, and a lens set sequentially arranged along a first direction is provided. The filter includes a central region and a peripheral region. The central region has a first light transmission band for a wavelength range of a visible light and a second light transmission band for a wavelength range of an infrared light. The peripheral region surrounds the central region. The peripheral region has a third light transmission band for the wavelength range of the infrared light and is substantially opaque to the visible light, and an area of one portion of the central region surrounded by the peripheral region is tapered toward the first direction.

Abstract: A headset including a speaker, a motion sensor, a transceiver, and a processor is provided. The speaker plays audio data. The motion sensor senses a posture of a user to generate first sensing data. The transceiver performs data transmission with an external device. The processor is coupled to the motion sensor and the transceiver. The processor determines whether the posture is correct according to the first sensing data to generate an output result and transmits the output result through the transceiver.

Abstract: A display device including a display panel, a light guide plate and a light emitting module is disclosed. The light guide plate is opposite to the display panel and has a light incident surface. The light emitting module emits a light to the light incident surface. The light emitting module includes a substrate, multiple first light emitting elements and multiple second light emitting elements. The first light emitting elements are disposed on the substrate along the first direction and divided into multiple first luminous areas. Each first luminous area includes at least two first light emitting elements. The second light emitting elements are disposed on the substrate along the first direction and divided into multiple second luminous areas. Each second luminous area includes at least two second light emitting elements. The first and second luminous areas are staggered along the second direction perpendicular to the first direction.