13results about How to "Excellent optical properties" patented technology

The application relates to the field of optical lenses and discloses a camera optical lens which comprises seven lenses in sequence from the object side to the image side, namely a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power, a fifth lens with positive refractive power, a sixth lens with positive refractive power and a seventh lens with negative refractive power; wherein the focal length of the camera optical lens is f, the focal length of the first lens is f1, the central curvature radius of the object side surface of the third lens is R5, the central curvature radius of the image side surface of the third lens is R6, the on-axis thickness of the second lens is d3, the on-axis distance from the image side surface of the second lens to the object side surface of the third lens is d4, and the following relationships are satisfied: 1.00 <= f1 / f <= 2.00; 2.00 <= d3 / d4 <= 5.00; and -10.00 <= R5 / R6 <= -1.00. The camera optical lens has good optical performance and meets the design requirements of large aperture, wide angle and ultra-thin.

This invention belongs to the field of back-contact battery technology, specifically relating to a back-contact battery and its battery assembly with a specific front-side structure. This specific front-side structure includes a tunneling oxide layer and a specifically doped amorphous silicon layer sequentially disposed on the front side of a silicon substrate. Within the specifically doped amorphous silicon layer, a low-doped amorphous silicon layer, a high-doped amorphous silicon layer, and an oxygen-doped amorphous silicon layer are sequentially disposed along the direction away from the tunneling oxide layer. The specifically doped amorphous silicon layer is doped with phosphorus (P) and contains hydrogen (H). The P doping concentration C1 in the low-doped amorphous silicon layer and the P doping concentration C3 in the oxygen-doped amorphous silicon layer are both lower than the P doping concentration C2 in the high-doped amorphous silicon layer. This specific front-side structure enables the back-contact battery to achieve an absorption rate exceeding 85% for incident light within 400 nm. The back-contact battery of this invention maintains good performance even after long-term exposure to ultraviolet light, improving the battery's UV reliability while achieving high transmittance and high battery efficiency.

This invention provides an organic eutectic material with a controllable charge-transfer exciton diffusion coefficient and its preparation method. The molecular formula of this organic eutectic material is (TSB). x (TSB-Br) 1‑x (TCNB)2, wherein TSB is trans-1,2-stilbene, TSB-Br is trans-4-bromostilbene, TCNB is 1,2,4,5-phenylenetetraacetonitrile, and x is the proportion of TSB molecules. The organic eutectic material prepared by this invention has a regular morphology, high crystallinity, and exhibits both strong and delayed fluorescence emission, with continuously tunable diffusion coefficients for singlet and triplet charge-transfer excitons. The preparation method described in this invention has advantages such as low raw material cost, mild conditions, and simple operation. The prepared (TSB)2... x (TSB-Br) 1‑x (TCNB)2 organic eutectic materials have potential applications in fields such as imaging, photoelectric conversion, and spintronics.

The present application provides a polarizing plate having excellent optical properties and suppressing deviation of the optical properties. The polarizing plate of the present application has a polarizing film having a thickness of 8 μm or less, a monochromatic transmittance of 48% or more, and a degree of polarization of 85% or more, and a protective layer provided on at least one side of the polarizing film, wherein the difference between the maximum and minimum values of the monochromatic transmittance of the polarizing plate in a region of 50 cm 2 width is 1% or less. Another polarizing plate of the present application has a polarizing film having a thickness of 8 μm or less, a monochromatic transmittance of 48% or more, and a degree of polarization of 85% or more, and a protective layer provided on at least one side of the polarizing film, wherein the width of the polarizing plate is 1000 mm or more, and the difference between the maximum and minimum values of the monochromatic transmittance of the polarizing plate at positions in the width direction is 1% or less.

Examples relate to thin films, transparent laminates, applications as cover films, and multilayer electronic devices incorporating the thin film, which possess excellent optical properties such as refractive index, haze, and yellowness, as well as excellent mechanical properties. The thin film includes an elastic layer with a refractive index of 1.48 to 1.58 and a low-temperature damage index (the difference between tensile modulus and tensile strength at a specific temperature), wherein the low-temperature damage index of the elastic layer at -40°C is below 1300 MPa.

This invention belongs to the field of optoelectronic material preparation technology, specifically relating to a Mg-doped C12A7 translucent ceramic and its preparation method. The method includes the following steps: mixing a calcium-containing precursor, an aluminum-containing precursor, and a magnesium-containing precursor in a specific molar ratio; ball milling the mixture in anhydrous ethanol; drying and sieving to obtain (Ca... 1‑x Mg x )12A7 precursor powder; the (Ca 1‑x Mg x )12A7 precursor powder was pressed and subjected to cold isostatic pressing to obtain (Ca 1‑x Mg x )12A7 precursor block; the (Ca 1‑x Mg x The Mg-doped C12A7 precursor block is placed in an oxygen atmosphere and heated to the target sintering temperature for pressureless sintering to obtain Mg-doped C12A7 ceramic. This invention significantly simplifies the process flow, reduces the complexity and cost of preparation, and effectively achieves high densification of the ceramic.

This invention discloses a method for fabricating a porous GaN-based N-doped gallium β-oxide solar-blind detector, comprising the following steps: Step 1, growing an n-GaN thin film on a first substrate, and electrochemically etching the n-GaN thin film in an electrolyte to prepare nanoporous GaN; Step 2, using the nanoporous GaN as a second substrate, growing an N-doped gallium β-oxide thin film to prepare a nanoporous GaN-based N-doped gallium β-oxide thin film, and annealing it in an atmosphere; Step 3, depositing alloy electrodes on the nanoporous GaN-based N-doped gallium β-oxide thin film to prepare a porous GaN-based N-doped gallium β-oxide solar-blind photodetector. This invention also discloses a porous GaN-based N-doped gallium β-oxide solar-blind detector. This invention solves the key common problems in the prior art, such as high stress in gallium β-oxide thin films, poor crystal quality, and large dark current and slow photoresponse speed in gallium β-oxide solar-blind detectors.

This invention provides a camera optical lens, comprising, from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The first lens has negative refractive power. The field of view (FOV) of the camera optical lens is , the focal length of the sixth lens is f6, the focal length of the seventh lens is f7, the axial distance from the image side of the second lens to the object side of the third lens is d4, and the axial distance from the image side of the third lens to the object side of the fourth lens is d6, satisfying the following relationships: 100.00°≤FOV≤135.00°; -5.00≤f6 / f7≤-1.00; 0.85≤d4 / d6≤5.00. This camera optical lens not only possesses excellent optical performance but also meets the design requirements of a large aperture and wide angle.

A wide-angle lens which easily corrects various aberrations and realizes miniaturization. The wide-angle lens of the present invention is composed of a first lens, a second lens, a third lens, a fourth lens, an aperture, a fifth lens, a sixth lens, and a seventh lens which are arranged in this order from the object side, the sixth lens and the seventh lens constitute a cemented lens, the first lens and the second lens are each a negative lens with a concave surface facing the image side, the third lens and the fourth lens are each a positive lens with a convex surface facing the image side, the fifth lens is a positive lens with a convex surface facing the object side and a convex surface facing the image side, the sixth lens is a negative lens with a concave surface facing the image side, the seventh lens is a positive lens with a convex surface facing the object side and a convex surface facing the image side, and when the combined focal length of the first lens, the second lens, the third lens, and the fourth lens is set as f1234 and the combined focal length of the fifth lens, the sixth lens, and the seventh lens is set as f567, the following relationship is satisfied: 0.800 < f1234 / f567 < 3.000.

This invention relates to the field of optical lenses, and discloses a camera optical lens comprising seven lenses, arranged sequentially from the object side to the image side as follows: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power, a fifth lens with positive refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power; wherein the focal length of the camera optical lens is f, the focal length of the first lens is f1, the central radius of curvature of the object side of the fifth lens is R9, the central radius of curvature of the image side of the fifth lens is R10, the axial thickness of the fourth lens is d7, and the axial distance from the image side of the fourth lens to the object side of the fifth lens is d8, and satisfies the following relationships: 1.00≤f1 / f≤2.00; 5.00≤d7 / d8≤10.00; 2.00≤R9 / R10≤8.00. This camera lens not only boasts excellent optical performance but also meets the design requirements of large aperture, wide-angle, and ultra-thin design.

Disclosed are electroluminescent display devices and light emitting devices that include a blue light emitting layer. The electroluminescent display devices and the light emitting devices include a first electrode, a second electrode, and a light emitting layer between the first electrode and the second electrode. The light emitting layer includes a blue light emitting layer that includes a plurality of nanostructures that do not include cadmium. Upon application of a bias, the blue light emitting layer is configured to emit light having an emission peak wavelength (λ 最大 ) in a range of greater than or equal to about 445 nm and less than or equal to about 480 nm. During a change in bias from a first voltage to a second voltage that is at least about 5 volts greater than the first voltage, the emission peak wavelength (λ 最大 ) of the blue light emitting layer can exhibit a first emission peak wavelength that is less than the emission peak wavelength at the first voltage and the emission peak wavelength at the second voltage, and a change width of the emission peak wavelength (λ 最大 ) during the change in bias is less than or equal to about 4 nanometers.

This invention relates to the field of optical lenses and discloses a camera optical lens comprising seven lenses, arranged sequentially from the object side to the image side as follows: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with refractive power, a fifth lens with positive refractive power, a sixth lens with negative refractive power, and a seventh lens with negative refractive power; wherein the focal length of the camera optical lens is f, the focal length of the fourth lens is f4, the central radius of curvature of the object side of the second lens is R3, the central radius of curvature of the image side of the second lens is R4, the axial thickness of the third lens is d5, and the axial distance from the image side of the third lens to the object side of the fourth lens is d6, and satisfies the following relationships: -10.00≤f4 / f≤10.00; 4.00≤d5 / d6≤8.00; 2.00≤(R3+R4) / (R3-R4)≤10.00. This camera lens not only boasts excellent optical performance but also meets the design requirements of large aperture, wide-angle, and ultra-thin design.

This invention relates to the field of optical lenses and discloses a camera optical lens comprising seven lenses, arranged sequentially from the object side to the image side as follows: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with refractive power, a fifth lens with positive refractive power, a sixth lens with negative refractive power, and a seventh lens with negative refractive power; wherein the focal length of the camera optical lens is f, the focal length of the fourth lens is f4, the central radius of curvature of the object side of the second lens is R3, the central radius of curvature of the image side of the second lens is R4, the axial thickness of the first lens is d1, and the axial distance from the image side of the first lens to the object side of the second lens is d2, satisfying the following relationships: -10.00≤f4 / f≤10.00; 1.00≤d1 / d2≤3.00; 2.00≤(R3+R4) / (R3-R4)≤7.00. This camera lens not only boasts excellent optical performance but also meets the design requirements of large aperture, wide-angle, and ultra-thin design.