摘要:
A 1-2nd lens group includes two aspheric resin lenses, and thereby it is possible to perform effective correction in order to suppress aberration fluctuation to be reduced. At this time, a glass lens is disposed between the two lenses, and thereby it is possible to control an incident light flux angle to the resin lens and to reduce power of the resin lenses, and it is possible to prevent variations of shapes of the resin lens. Even in a case where the second optical group is configured of one mirror, it is possible for a primary image to have appropriate aberration and to hereby reduce aberration for a good image which is finally projected onto a screen through the second optical group.
摘要:
An imaging device (20) includes an imaging optical system (LP1,LG1,LG2,LP2) including at least one movable optical element (LH1,LG2); an image sensor (83), an imaging surface of which lies on an image-forming plane of the imaging optical system; a circuit board (80) on which the image sensor is mounted; and an image processing circuit (84) for processing an image signal output from the image sensor and a drive circuit (88) for the movable optical element, both of the image processing circuit and the drive circuit are mounted on the circuit board. The image processing circuit and the drive circuit are disposed on the circuit board in that order from a side closer to the image sensor.
摘要:
The invention aims to achieve slim design by employing a light path folding optical system, add a hand-shake correction capability, and lower power consumption. An imaging lens device (40) includes a light path folding optical system (20) having a reflector (G2) that folds the optical axis incident perpendicular to the gravitational direction toward the gravitational direction, and an imaging element (30) that converts an image formed by the light path folding optical system (20) into an electrical signal. The imaging lens device (40) also includes drive means (60) that moves some of lens groups or one lens in the direction perpendicular to the optical axis folded toward the gravitational direction by the reflector (G2). The shake correction lens group (Lc) is moved in the direction perpendicular to the vertical optical axis to move the image in the direction perpendicular to the vertical optical axis.
摘要:
Near-to-eye displays within head mounted devices offer both users with and without visual impairments enhanced visual experiences either by improving or augmenting their visual perception. Unless the user directly views the display without intermediate optical elements then the designer must consider chromatic as well as other aberrations. Within the prior art the optical train is either complex through additional corrective elements adding to weight, cost, and size or through image processing. However, real time applications with mobile users require low latency to avoid physical side effects. Accordingly, it would be beneficial to provide near-to-eye displays mitigating these distortions and chromatic aberrations through pre-distortion based electronic processing techniques in conjunction with design optimization of the optical train with low weight, low volume, low complexity, and low cost. Further, it would be beneficial to exploit consumer grade low cost graphics processing units rather than application specific circuits.
摘要:
An imaging unit including an image sensor (83), an incident-side prism (LP1), an exit-side prism (LP2), and an intermediate optical system (LG1,LG2) positioned therebetween, wherein light incident on the incident-side prism passes through the incident-side prism, the intermediate optical system and the exit-side prism to be incident on the image sensor, the imaging unit includes a housing (21) supporting the incident-side prism, the exit-side prism and the intermediate optical system such that incident and exit optical axes of the incident-side prism, an optical axis of the intermediate optical system, and incident and exit optical axes of the exit-side prism all lie on a common plane; and a cover board (80), on which the image sensor is mounted, fixed to the housing so that the image sensor faces an exit surface of the exit-side prism, the cover board closing an opening of the housing.
摘要:
Provided is a zoom lens allows size reduction in the depth direction and compactness. The zoom lens includes a plurality of lens groups (GR1 to GR5) and performs zooming by changing an inter-group distance. Of the plurality of lens groups (GR1 to GR5), a first lens group (GR1) on the most object side has a positive refractive power and is fixed. A reflection member for bending an optical axis is provided in the first lens group (GR1) and the reflection member is formed of a rectangular prism (P) having a negative refractive power. In addition, an imaging apparatus using the zoom lens is provided.
摘要:
Aspects relate to a prism array camera having a wide field of view. For example, the prism array camera can use a central refractive prism, for example with multiple surfaces or facets, to split incoming light comprising the target image into multiple portions for capture by the sensors in the array. The prism can have a refractive index of approximately 1.5 or higher, and can be shaped and positioned to reduce chromatic aberration artifacts and increase the FOV of a sensor. In some examples a negative lens can be incorporated into or attached to a camera-facing surface of the prism to further increase the FOV.