摘要:
A soft aperture allows gradual attenuation of a light beam dependent upon its location away from the center of a diffractive optical element. Such an optical element may be provided by decreasing a number of phase levels, increasing a number of phase levels, increasing a density of metal patches or diffractive gratings, or decreasing a blaze height and/or duty cycle, all radially from the center. Alternatively, the soft aperture may be defined by a photolithographic process. Such a soft aperture is particularly useful in aiding circularizing of an elliptical light beam. The soft aperture may be used alone or integrated with other optical elements.
摘要:
A power monitor for a light emitter emitting from a single face creates a monitor beam by deflecting a portion of the application beam and further manipulating the monitor beam to allow more efficient use of the monitor beam. For example, the monitor beam may be collimated to allow an increase in spacing between the light emitter and a detector for sensing the monitor beam. Alternatively or additionally, the monitor beam may be focused to allow use of a smaller detector and of a smaller percentage of the application beam. The diffractive element deflecting the beam may be either transmissive or reflective. The additionally manipulation of the monitor beam may be provided by the same diffractive element which deflects the beam, which is particularly useful when the diffractive element is reflective, and/or by additional optical elements.
摘要:
A monitor for a light beam creates a monitor beam by deflecting a portion of the application beam and further manipulating the monitor beam and/or the application beam to allow more efficient use thereof. For example, the monitor beam may be collimated to allow an increase in spacing between the device outputting the light beam and a detector for sensing the monitor beam. Alternatively or additionally, the monitor beam may be focused to allow use of a smaller detector and of a smaller percentage of the application beam. The diffractive element deflecting the beam may be either transmissive or reflective. The additionally manipulation of the monitor beam and/or the application beam may be provided by the same diffractive element which deflects the beam, which is particularly useful when the diffractive element is reflective, and/or by additional optical elements.
摘要:
A power monitor for a light emitter emitting from a single face creates a monitor beam by deflecting a portion of the application beam and further manipulating the monitor beam to allow more efficient use of the monitor beam. For example, the monitor beam may be collimated to allow an increase in spacing between the light emitter and a detector for sensing the monitor beam. Alternatively or additionally, the monitor beam may be focused to allow use of a smaller detector and of a smaller percentage of the application beam. The diffractive element deflecting the beam may be either transmissive or reflective. The additionally manipulation of the monitor beam may be provided by the same diffractive element which deflects the beam, which is particularly useful when the diffractive element is reflective, and/or by additional optical elements.
摘要:
A thin camera having sub-pixel resolution includes an array of micro-cameras. Each micro-camera includes a lens, a plurality of sensors of size p, and a plurality of macro-pixels of size d having a feature of size q. The feature size q smaller than p and provides a resolution for the micro-camera greater than p. The smallest feature in the micro-cameras determines the resolution of the thin camera. Each macro-pixel may have any array of m features of size q, where q=d/m. Additional micro-cameras may be included to increase power.
摘要翻译:具有子像素分辨率的薄型相机包括微型相机阵列。 每个微型摄像机包括透镜,大小为p的多个传感器,以及大小为d的多个具有尺寸为q的特征的宏观像素。 特征尺寸q小于p,并为微型摄像机提供大于p的分辨率。 微型相机中最小的功能决定了薄型相机的分辨率。 每个宏像素可以具有任何尺寸为q的m个特征的阵列,其中q = d / m。 可以包括附加的微型摄像机以增加功率。
摘要:
A color camera includes at least three sub-cameras, each sub-camera having an imaging lens, a color filter, and an array of detectors, The color camera combines images from the three sub-cameras to form a composite multi-color image, wherein the three sub-cameras include a total number of detectors N and a total number of different color sets X, wherein a first number of signals of a first color set is less than N/X and a second number of signals of a second color set is greater than N/X, signals of the second color set being output from at least two of the three sub-cameras, wherein resolution of a composite image of the second color set is greater than resolution of an individual sub-camera and a resolution of the composite image. Corresponding images of the same color set may be shifted, either sequentially or simultaneously, relative to one another.
摘要:
A sub-wavelength anti-reflective diffractive structure is incorporated with a base diffractive structure having a small period to form a high efficiency diffractive structure. In the high efficiency diffractive structure, the anti-reflective structure and/or the base diffractive structure are altered from their ideal solo structure to provide both the desired performance and minimize reflections.
摘要:
An optical assembly includes a first transparent substrate having first and second surfaces, a second transparent substrate having substantially parallel third and fourth surfaces, a reflective portion on the second transparent substrate, a plurality of filters between the first substrate and the reflective portion, the plurality of filters filtering light beams incident thereon, the plurality of filters and the reflective portion forming a bounce cavity within the second transparent substrate, a collimating lens for collimating light beams to be input to the bounce cavity, a tilt mechanism for introducing tilt to light beams input to the bounce cavity; an input port receiving light beams and an output port transmitting light beams. The tilt mechanism may be between the first and second substrate.
摘要:
An optical assembly includes a first transparent substrate having first and second surfaces, a second transparent substrate having substantially parallel third and fourth surfaces, a reflective portion on the second transparent substrate, a plurality of filters between the first substrate and the reflective portion, the plurality of filters filtering light beams incident thereon, the plurality of filters and the reflective portion forming a bounce cavity within the second transparent substrate, a collimating lens for collimating light beams to be input to the bounce cavity, a tilt mechanism for introducing tilt to light beams input to the bounce cavity; an input port receiving light beams and an output port transmitting light beams. The tilt mechanism may be between the first and second substrate.
摘要:
A thin camera having sub-pixel resolution includes an array of micro-cameras. Each micro-camera includes a lens, a plurality of sensors of size p, and a plurality of macro-pixels of size d having a feature of size q. The feature size q smaller than p and provides a resolution for the micro-camera greater than p. The smallest feature in the micro-cameras determines the resolution of the thin camera. Each macro-pixel may have any array of m features of size q, where q=d/m. Additional micro-cameras may be included to increase power.
摘要翻译:具有子像素分辨率的薄型相机包括微型相机阵列。 每个微型摄像机包括透镜,大小为p的多个传感器,以及大小为d的多个具有尺寸为q的特征的宏观像素。 特征尺寸q小于p,并为微型摄像机提供大于p的分辨率。 微型相机中最小的功能决定了薄型相机的分辨率。 每个宏像素可以具有任何尺寸为q的m个特征的阵列,其中q = d / m。 可以包括附加的微型摄像机以增加功率。