The present disclosure provides an adaptive optics system including at least one active pixel sensor array that detects light and sends a signal to a processor. The adaptive optics system also includes a wavefront correction system including at least one wavefront control structure and the processor, and that executes instructions on the processor to produce a digital image in which at least one wavefront distortion in the light detected by the active pixel sensor array is partially or fully corrected. The disclosure also provides methods of using the adaptive optics system.

Embodiments provide an optical imaging system, which includes a first aberration compensation lens group, a polarizer, an optical imaging module, and a display, where the display, the first aberration compensation lens group, the polarizer, and the optical imaging module are sequentially arranged. The display is configured to emit non-polarized light. The first aberration compensation lens group is configured to perform aberration compensation on the non-polarized light emitted by the display. The polarizer is configured to transmit polarized light in non-polarized light that is obtained after the aberration compensation and that is emitted by the first aberration compensation lens group. The optical imaging module is configured to: fold an optical path, and emit the polarized light. The embodiments of this application are applied to an optical imaging process.

An optical system for multispectral, infrared light having at least three element. Such systems include a first element having a first thermal glass constant-instantaneous Abbe number product and a first peak wavelength, and a second glass element having a second thermal glass constant-instantaneous Abbe number product and a second peak wavelength. The first product and the second product differing from one another by greater than 0.0075 K.sup.1. The first peak wavelength and the second peak wavelength are greater than 6 microns. The system also includes a third glass element having a third product and a third peak wavelength, the third wavelength differing from the first wavelength and the second by at least 3 microns, the third wavelength being in the range 1-5 microns. The sum of the first, second and third products being about zero. A doublet for transmitting multispectral light is also disclosed, as well as methods of designing such lenses.

In general, techniques are described regarding a combined monochrome and chromatic camera sensor. A camera comprising a camera sensor and a processor may be configured to perform the techniques. The camera sensor may include pixel sensors, monochrome filters disposed over a first subset of the pixel sensors, and color filters disposed over a second subset of the pixel sensors. The first subset of the pixel sensors may be configured to capture a monochrome image of a scene. The second subset of the pixel sensors may be configured to capture, concurrently with the capture of the monochrome image, a color image of the scene, where a number of the first subset of the pixel sensors is greater than a number of the second subset of the pixel sensors. The processor may be configured to process the monochrome image and the color image to obtain an enhanced color image of the scene.

The zoom lens includes, in order from object side to image side, a positive first lens unit, a negative second lens unit, a positive third lens unit, and a rear lens group including at least one lens unit, in which intervals between adjacent lens units are changed during zooming. The third lens unit includes at least two negative lenses and at least three positive lenses. An average value of partial dispersion ratios of two negative lenses having strongest refractive powers of the at least two negative lenses, an average value of partial dispersion ratios of three positive lenses having strongest refractive powers of the at least three positive lenses, an average value of Abbe numbers of the two negative lenses, an average value of Abbe numbers of the three positive lenses, a back focus, and a focal length of zoom lens at wide angle end are appropriately set.

The zoom lens includes, in order from object side to image side, a positive first lens unit (LU), a negative second LU, a positive third LU, and a rear lens group including at least one LU. The zoom lens further includes an aperture stop. A LU arranged on image side of aperture stop moves during zooming. The first LU consists of at least two positive lenses (TPL), and two negative lenses (TNL). An average partial dispersion ratio (APDR) of TNL, APDR of TPL having highest refractive powers of at least TPL, an average Abbe number (AAN) of TNL, AAN of TPL, larger one of Abbe numbers of TNL, smaller one of Abbe numbers of TPL, focal lengths of first and second LUs, a distance from an optical surface closest to object side to image plane, and a focal length of zoom lens at a telephoto end are each appropriately set.

A zoom lens includes in order from an object side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, a third lens unit having a negative refractive power, and a fourth lens unit having a positive refractive power. At the time of zooming, distances between lenses vary. A distance between the first lens unit and the second lens unit becomes smaller at a telephoto end than at a wide angle end, and a distance between the second lens unit and the third lens unit becomes longer at the telephoto end than at the wide angle end, and the following conditional expressions (1), (2), and (3) are satisfied:
0.4<|f1|/|f2|<1.2(1)
0.3<L2/L1<0.95(2)
0.6<Lt/Lw<1(3).

An illuminating lens design method and an illuminating lens. The projections of the highest points of an outer surface and an inner cavity surface of the illuminating lens on the horizontal plane are overlapped, and a horizontal profile curve of the outer surface and the inner cavity surface of the illuminating lens obtained from an arbitrary height satisfies: ${\left(\frac{\left|x_i\right|}{a_i}\right)}^{n_i}+{\left(\frac{\left|y_i\right|}{b_i}\right)}^{n_i}=1$ where ai is the projection length of a portion of an xz section basic profile curve, which is intercepted by an xiyi plane, on the xiyi plane; bi is the projection length of a portion of a yz basic profile curve, which is intercepted by the xiyi plane, on the xiyi plane; xi, yi are coordinates of certain point on the outer horizontal profile curve and the inner horizontal profile curve; ni is a real number greater than 1.

A zoom lens includes in order from an object side, a positive first unit, one or two second units including a negative lens unit closest to the image side, and monotonously moved to the image side for zooming to a telephoto end, one or two third units including a negative lens unit closest to the object side, and moved for zooming, and a positive fourth unit disposed closest to the image side, in which the first unit includes, in order from the object side, a negative subunit, a positive subunit moved for focusing, and a positive subunit, and a focal length of the first unit, a composite focal length at the telephoto end of the second unit, a maximum moving amount for zooming of the lens unit included in the second unit, and a maximum Abbe number of the negative lens included in the second unit are properly set.

The present invention relates to a photographic objective having at least six lenses and at most eight lenses, with the first lens viewed from the object side being manufactured from glass and having a positive refractive power, an Abbe number of greater than or equal to 55, and a deviation of the relative partial dispersion from the normal line P.sub.g,F between 0.008 and 0.035.