Abstract: A photolithography projection lens, having a plurality of lens elements and a light diaphragm arranged among them, arranged along an optical axis, and comprising an object side and an image side respectively arranged at the front and rear ends of the plurality of lens elements; wherein: the diopters of the two lenses respectively near the object side and the image side must be positive; each of the lens elements is a single lens without cement; the angle between the chief rays at different image height positions and the optical axis is <1 degree, and the angle between the chief rays at different object height positions and the optical axis is <1 degree; and under the projection of 350˜450 nm wavelength light, it provide the imaging effect of precise magnification.

Abstract: An optical lens system includes, in order from a magnified side to a minified side, a first lens group of positive refractive power and a second lens group of positive refractive power. The first lens group includes a first lens and a second lens, and the second lens group includes a third lens and a fourth lens. One of the third lens and the fourth lens includes one aspheric surface, and each of the lenses in the optical lens system is a singlet lens. The optical lens satisfies a condition of TE(?=400)>94%, where TE(?=400) denotes an overall transmittance of all of the lenses in the optical lens system measured at a wavelength of 400 nm.

Abstract: An optical lens system includes, in order from a magnified side to a minified side, a first lens group of positive refractive power and a second lens group of positive refractive power. The first lens group includes a first lens and a second lens, and the second lens group includes a third lens and a fourth lens. One of the third lens and the fourth lens includes one aspheric surface, and each of the lenses in the optical lens system is a singlet lens. The optical lens satisfies a condition of TE(?=400)>94%, where TE(?=400) denotes an overall transmittance of all of the lenses in the optical lens system measured at a wavelength of 400 nm.

Abstract: An optical lens system using ultraviolet for imaging includes, in order from a magnified side to a minified side, a first lens group of positive refractive power and a second lens group of positive refractive power. The second lens group includes at least one cemented lens and at least one aspheric lens. The optical lens system satisfies the condition of TE(?=400)>94%, where TE(?=400) denotes an overall transmittance of all of the lenses in the optical lens system measured at a wavelength of 400 nm and is equal to a product of respective internal transmittances of all of the lenses measured at a wavelength of 400 nm.

Abstract: A non-contact self-injection-locked vital sign sensor is disclosed, which includes transmitting antenna, receiving antenna, self-injection-locked integrated circuit and demodulator. The self-injection-locked integrated circuit includes voltage-controlled oscillator, mixer, two amplifiers and harmonic-frequency power combiner. A frequency-multiplied signal is produced by amplifiers and harmonic-frequency power combiner then transmitted to a living body by transmitting antenna. A frequency-divided signal is produced by voltage-controlled oscillator and mixer then transmitted to voltage-controlled oscillator, then a frequency- and amplitude-modulated signal is produced by the voltage-controlled oscillator then transmitted to demodulator to produce a vital sign. So as to detect vital sign with a higher frequency to increase measurement sensitivity by using a low-cost integrated circuit process.

Abstract: A driving method and driving apparatus for light emitting diodes in a keyboard are provided. The driving method includes the following steps: obtaining a first driver color data table unmatched with a key light driver array from a first memory; generating a second driver color data table matched with the key light driver array in a second memory according to an arrangement order of keys in the key light driver array and the first driver color data table; driving the key light driver array according to the second driver color data table; and driving the light emitting diodes corresponding to keys in the keyboard through the key light driver array.

Abstract: A non-contact self-injection-locked vital sign sensor is disclosed, which includes transmitting antenna, receiving antenna, self-injection-locked integrated circuit and demodulator. The self-injection-locked integrated circuit includes voltage-controlled oscillator, mixer, two amplifiers and harmonic-frequency power combiner. A frequency-multiplied signal is produced by amplifiers and harmonic-frequency power combiner then transmitted to a living body by transmitting antenna. A frequency-divided signal is produced by voltage-controlled oscillator and mixer then transmitted to voltage-controlled oscillator, then a frequency- and amplitude-modulated signal is produced by the voltage-controlled oscillator then transmitted to demodulator to produce a vital sign. So as to detect vital sign with a higher frequency to increase measurement sensitivity by using a low-cost integrated circuit process.

Abstract: An optical lens system using ultraviolet for imaging includes, in order from a magnified side to a minified side, a first lens group of positive refractive power and a second lens group of positive refractive power. The second lens group includes at least one cemented lens and at least one aspheric lens. The optical lens system satisfies the condition of TE(?=400)>94%, where TE(?=400) denotes an overall transmittance of all of the lenses in the optical lens system measured at a wavelength of 400 nm and is equal to a product of respective internal transmittances of all of the lenses measured at a wavelength of 400 nm.

Abstract: A driving method and driving apparatus for light emitting diodes in a keyboard are provided. The driving method includes the following steps: obtaining a first driver color data table unmatched with a key light driver array from a first memory; generating a second driver color data table matched with the key light driver array in a second memory according to an arrangement order of keys in the key light driver array and the first driver color data table; driving the key light driver array according to the second driver color data table; and driving the light emitting diodes corresponding to keys in the keyboard through the key light driver array.

Abstract: An optical lens system includes, in order from a magnified side to a minified side, a first lens group and a second lens group. The first lens group of negative refractive power has at least one aspheric surface, and the second lens group of positive refractive power has at least one aspheric surface. Each of the lenses in the optical lens system is a singlet lens, and the condition: TE(?=365)>70% is satisfied, where TE(?=365) denotes an overall transmittance of all of the lenses in the optical lens system measured at a wavelength of 365 nm.

Abstract: A projection lens system includes, in order from a magnified side to a reduced side, a first lens group of positive refractive power and a second lens group of positive refractive power. The second lens group includes at least one cemented lens and at least one aspheric surface. During focusing, the first lens group remains stationary, and the second lens group is movable in a direction of an optical axis.

Abstract: An optical lens system includes, in order from a magnified side to a minified side, a first lens group and a second lens group. The first lens group of negative refractive power has at least one aspheric surface, and the second lens group of positive refractive power has at least one aspheric surface. Each of the lenses in the optical lens system is a singlet lens, and the condition: TE(?=365)>70% is satisfied, where TE(?=365) denotes an overall transmittance of all of the lenses in the optical lens system measured at a wavelength of 365 nm.

Abstract: A digital image converting apparatus with auto-correcting phase and a method thereof are provided. The digital image converting apparatus includes a phase controller, a delay locked loop (DLL), an analog-to-digital converter (ADC) and a position adjuster. The phase controller selects one of preset phases for outputting and continuously changes the output preset phase for controlling a clock signal produced by the delay locked loop. The ADC converts an analog display frame according to the adjusted clock signal. After all the preset phases are output in sequence, the phase controller can obtain an optimal phase for converting the display frame according to the smallest front porch of horizontal scan line and the smallest back porch of horizontal scan line of a digital display frame produced by the position adjuster.

Abstract: A digital image converting apparatus with auto-correcting phase and a method thereof are provided. The digital image converting apparatus includes a phase controller, a delay locked loop (DLL), an analog-to-digital converter (ADC) and a position adjuster. The phase controller selects one of preset phases for outputting and continuously changes the output preset phase for controlling a clock signal produced by the delay locked loop. The ADC converts an analog display frame according to the adjusted clock signal. After all the preset phases are output in sequence, the phase controller can obtain an optimal phase for converting the display frame according to the smallest front porch of horizontal scan line and the smallest back porch of horizontal scan line of a digital display frame produced by the position adjuster.