9 results about "Dichroic prism" patented technology

An image pickup module includes: a color separation prism that separates incident light into light beams and includes emission surfaces configured to emit the light beams in different directions; and image pickup elements provided corresponding to the emission surfaces. The image pickup element includes a facing surface facing the emission surface and including an image pickup region and an outer peripheral region outside the image pickup region, and the image pickup element is fixed to the color separation prism with an adhesive interposed between the outer peripheral region and the emission surface. At least one of the emission surfaces includes a distance increasing portion that faces the outer peripheral region and is formed such that a facing distance from the distance increasing portion to the outer peripheral region is greater than a facing distance from the at least one of the emission surfaces to the image pickup region.

A wearable heads-up display (WHUD) reduces the prevalence of visual artifacts by employing a projector with a combiner including a plurality of combiner elements such as dichroic prisms. The projector is configured with one or more features that 1) reduce the amount of stray light generated at the combiner 2) change the path of the stray light so that the stray light is unable to exit the projector and thus is unable to create visual artifacts, or any combination thereof. By reducing the stray light that is generated and by changing the path of the stray light as described herein, the likelihood that a user will see a visual artifact is reduced, thus improving the user experience with the WHUD system.

A projection device includes a dichroic prism, a first self-luminous display device, a second self-luminous display device, a third self-luminous display device, and a projection optical system. The dichroic prism has a first surface, a second surface, a third surface, and a fourth surface, and is configured to emit combined image light from the fourth surface. The first self-luminous display device is configured to use light of a first wavelength to emit first image light to the first surface. The second self-luminous display device is configured to use light of a second wavelength to emit second image light to the second surface. The third self-luminous display device is configured to use light of a third wavelength to emit third image light to the third surface. The projection optical system is configured to project, onto a projection target, the combined image light emitted from the dichroic prism.

The invention provides an intelligent recommendation method for building a color separation prism optical system, and belongs to the technical field of intelligent recommendation, and the method comprises the steps: obtaining dominant and implicit granularity features of an optical demand, and building an optical feature matrix after correlation mining; establishing an optical feature priority dynamic attenuation function, hierarchically splitting matrix features through a hierarchical encoder, and mapping the matrix features to a component semantic space in combination with an optical component knowledge graph; inputting a mapping result into a matching model built by an optical component heterogeneous graph neural network, and obtaining a component recommendation combination by taking light splitting precision, component compatibility and working condition adaptability as core optimization targets; and performing parameter correction and optimal value calculation on each combination, and screening a final recommendation combination to complete system establishment. According to the method, through deep excavation of explicit and implicit features, dynamic priority adjustment and multi-constraint component matching, the building precision, stability and adaptability of the color separation prism optical system are improved, meanwhile, the building efficiency is remarkably improved, and personalized requirements under complex scenes are met.

This makes it easier to design filters when setting steep cutoff characteristics, suppresses the degradation of spatial resolution and the occurrence of crosstalk between channels, and makes the device more compact. The dichroic prism 10a and N (N is an integer of 2 or more) imaging plates 11a and the like are provided, and the dichroic prism 10a generates N different spectral characteristics D for wavelength components contained in an incident light beam 2. (1) (λ)~D (N) The nth (n is an integer between 1 and N) of the N imaging plates is a set of M n Type (M n is 2 or moreM n (an integer less than or equal to) are arranged at the corresponding pixels, and in the n-th imaging plate, M n The mth filter (m is 1 or more) n (an integer less than or equal to T m (n) (λ), D (n) (λ)T m (n) (λ) has different spectral properties for different ordered pairs (m,n).

Provided is a novel imaging device capable of appropriately acquiring a fluorescence image and a reflected light image of an object. The imaging device (2) is provided with: a stage (21) for holding an object; a first emission unit (3) that emits first emission light, which is ultraviolet light; a second emission unit (4) that emits second emission light, which is light having a wavelength region different from that of the ultraviolet light; a cross-shaped dichroic prism (5), which is a quadrangular prism having first to fourth side surfaces (51, 54), and which emits the first emission light from a third side surface (53) to the first side surface and guides the first emission light to an imaging region (90) on an object, and emits the second emission light from the third side surface (53) to the imaging region and guides the second emission light from the third side surface (53) to the imaging region; and an imaging unit (7) that receives fluorescent light generated in the imaging region when the first emission light is irradiated to the imaging region, and that receives reflected light of the second emission light in the imaging region when the second emission light is irradiated to the imaging region.

The application discloses a kind of deep hole surface topography measurement systems based on low coherence interference, including detection part and autocollimation system, detection part includes the white light interference system, specifically 1550nm ASE broadband light source, first mirror, first beam splitter prism, second mirror, reference mirror are sequentially arranged, two sides of first beam splitter prism are respectively provided with to-be-measured deep hole, near-infrared camera, and conical prism is arranged in to-be-measured deep hole;Autocollimation system is arranged between to-be-measured deep hole and first beam splitter prism, and autocollimation system includes sequentially arranged 630nm light source, dichroic prism, second beam splitter prism, third mirror, four-quadrant detector.The application can realize one-time scanning to deep hole surface topography, and multiple measurements are obtained by four-step phase shift algorithm, splicing algorithm and alignment algorithm, to realize the reconstruction of surface three-dimensional topography.In the device, autocollimation system is designed, the error generated by the deflection of the horizontal placement of the rod can be measured and error compensation is carried out.

A projection exposure apparatus includes a mask mark illumination light source irradiating a mask mark with exposure light itself or a first alignment light having substantially the same wavelength as the exposure light, and an alignment unit having a work mark illumination light source irradiating a work mark with second alignment light having a wavelength different from the wavelength of the exposure light, an imaging device, and an imaging optical system. The imaging optical system includes a first dichroic prism for synthesizing the first alignment light and the light from the work mark and emitting the synthesized light toward the imaging device, and an optical path length changing optical system for splitting and merging the first alignment light, in which the optical positional relationships of the work mark and the image of the mask mark with respect to the imaging device are equivalent.

According to an aspect, there is provided a treatment device (2; 30; 60; 130) for performing light-based treatment operations on or to a subject. The treatment device (2; 30; 60; 130) comprises a light source (12) for generating light for performing the treatment operation; a dichroic filter (34; 64; 104; 134) arranged at a first angle with respect to the incident light such that the incident light is separated into a transmitted light component and a reflected light component according to a cut-off wavelength of the dichroic filter (34; 64; 104; 134), wherein the transmitted light component is transmitted through the dichroic filter (34; 64; 104; 134) and the reflected light component is reflected by the dichroic filter (34; 64; 104; 134); a light exit window (10) through which a light component is emitted from the treatment device (2; 30; 60; 130); a beam dump (44; 74; 140) configured to absorb a light component; and a heat sink (46; 76; 142) coupled to the beam dump (44; 74; 140) to dissipate heat from the beam dump (44; 74; 140). The light exit window (10) and beam dump (44; 74; 140) are arranged with respect to the dichroic filter (34; 64; 104; 134) such that one of the transmitted light component and the reflected light component is emitted from the treatment device (2; 30; 60; 130) via the light exit window (10) and the other one of the transmitted light component and reflected light component is incident on the beam dump (44; 74; 140). The dichroic filter (34; 64; 104; 134) is provided on a first surface of a solid dichroic prism (38; 68) or an internal surface in a solid dichroic cuboid.