CN102590150B - Indoor hyperspectral bidirectional reflectance distribution function (BRDF) determining system - Google Patents

Indoor hyperspectral bidirectional reflectance distribution function (BRDF) determining system Download PDF

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Publication number
CN102590150B
CN102590150B CN201210052209.3A CN201210052209A CN102590150B CN 102590150 B CN102590150 B CN 102590150B CN 201210052209 A CN201210052209 A CN 201210052209A CN 102590150 B CN102590150 B CN 102590150B
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China
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quartz glass
light source
district
translation
spectrum
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CN201210052209.3A
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Chinese (zh)
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CN102590150A (en
Inventor
张垚
黄敬峰
魏晨
王秀珍
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浙江大学
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Abstract

The invention relates to an indoor hyperspectral bidirectional reflectance distribution function (BRDF) determining system, which comprises a light source area, a hyperspectral auxiliary brightness gauge adjusting area, a carrier stage area and a base which is horizontally placed; the light source area comprises a light source, a light source space adjusting valve, a light source supporting rod and a semi-arc slide rail, wherein the light source is hinged with the circular center of the semi-arc slide rail which is fixed on the side surface of the base through the light source supporting rod; the hyperspectral auxiliary brightness gauge adjusting area comprises an auxiliary brightness gauge, a space adjusting device, a quarter-arc slide rail and a hollow rotary disc, wherein the carrier stage area is arranged on the center of the base, and the hollow rotary disc is fixed on the center of the base; an optical axis of the light source always points to the center of the hollow rotary disc; and both the light source and the auxiliary brightness gauge are powered on. The indoor hyperspectral BRDF determining system has beneficial effects that: shade can be eliminated, the measuring precision can be improved, and the flexibility of the measuring range can be improved; and the rotation of the carrier stage can introduce the azimuth angle characteristic of the BRDF light source, so the completeness of the BRDF determination can be enhanced.

Description

Indoor high spectrum BRDF measures system
Technical field
The present invention relates to a kind of indoor high spectrum BRDF and measure system, belong to physical apparatus part.
Background technology
Spectrum learn in application, spectral characteristic of ground is the basis that terrestrial object information directly extracts.But be non-Lambertian source at the most ground object target performance characteristic of occurring in nature, the spectral signature of Target scalar and incident, the space geometry position of catoptrical light and their wavelength are relevant, the anisotropy of this Target scalar can be passed through bidirectional reflectance distribution function (Bidirectional Reflectance Distribution Function, BRDF) accurate description, because BRDF utilizes incident orientation angle and zenith angle, reflection position angle and zenith angle, the ratio of the irradiation brightness value in the incident direction that the reflecting brightness value on the reflection direction that in latus rectum, light wavelength represents and incident orientation angle and zenith angle and wavelength represent can be described this anisotropy of object exactly, therefore the anisotropy of Target scalar is also one of emphasis of spectral characteristic of ground research.
The high spectrum observation of BRDF is significant to the spectrum directivity of goal in research atural object, multi-angle remote sensing, remote sensing calibration and remote sensing quantification.Its ground is measured and is comprised that observation outdoor, indoor BRDF, outdoor mensuration mainly be take sunshine as incident light source and indoor to take be manually main incident light source, measures the reflecting brightness of Target scalar all angles on half direction of bowl.If number of patent application 200610096153.6,200610096154.0,200420062521.1,20110209229.2 is all the system that BRDF measures.But there is following weak point in these BRDF mensuration systems: the single light source that 1. light source of these systems is all used, measuring half ball center that object is R in radius, shade at hemisphere atural object BRDF detection process sensor is unavoidable on some specific angle direction, and sensor is lower in the reflection good fortune brightness of high zenith angle atural object BRDF detection process observation, and single light source can cause relatively large deviation.2. the hemisphere radius R of measuring ground object target BRDF is fixing, the sensor of its spectrum observation field angle can only be by changing field angle camera lens, but field angle camera lens is limited, conventionally only have 25 °, 15 °, 8 °, 5 °, 3 ° etc. discontinuous, suitable field angle is selected in impact.3. the incident angle of light source is a part for position angle and complete zenith angle, outdoorly take the sun and can only measure the solid angle of track of sun as light source, and indoor artificial light source can only be adjusted the zenith angle of incident light source, the integrality of the feature of Target scalar BRDF can not be described like this.Therefore the Target scalar BRDF feature that these shortcomings of traditional B RDF mensuration system can not be accurately complete.
Summary of the invention
For solve shade that single light source that current BRDF mensuration system used produces cause measuring accuracy to reduce and when the observation BRDF measure the incomplete problem of feature that the position angle of incident light source of system and field angle have the Target scalar BRDF that limitation causes, propose a kind of elimination shade, improved measuring accuracy, and improved position angle and the circumscribed indoor high spectrum BRDF mensuration system of field angle of incident light source.
Indoor high spectrum BRDF of the present invention measures system, it is characterized in that: described system comprises the base of light source region, the auxiliary bright meter regulatory region of high spectrum, objective table district and horizontal positioned; Described light source region comprises light source, light source roll adjustment valve, light source pole and semi arch slide rail, and described light source is hinged with the center of circle of semi arch slide rail that is fixed on base side by described light source pole; The auxiliary bright meter regulatory region of described high spectrum comprises auxiliary bright meter, range regulator, 1/4 circular arc slide rail and hollow rotary disk, and described auxiliary bright meter is connected with described hollow rotary disk by 1/4 circular arc slide rail; Described objective table district is placed on described base center, and the center of gravity in described objective table district and described base center of gravity on same vertical line, the hollow rotary disk described in described base center is fixing; Described light source optical axis points to the center of circle of hollow rotary disk all the time; Described light source and described auxiliary bright meter all switch on power;
Described light source comprises the lamp socket of halogen lamp, the collimation lens barrel being connected with lamp socket is set, lamp socket and collimation lens barrel junction have light hole, in collimation lens barrel, be provided with aperture adjustable diaphragm, collimation lens barrel light-emitting window place is provided with straight mirror, adjustable diaphragm position, described aperture overlaps with the focal plane of collimating mirror, and the emergent light of described halogen lamp is sentenced parallel light emergence from collimation lens barrel light-emitting window after the aperture adjustable diaphragm in collimation lens barrel and collimating mirror;
Described light source pole comprises cross support arm and longitudinal girt, and described cross support arm one end is connected with described light source is vertical, the other end and described vertical connection of longitudinal girt; 5 ° of the hinged units in the center of circle of the other end of described longitudinal girt and described semi arch slide rail quantize to rotate, and guarantee that the optical axis of light source is through the center of hollow disk, and at described semi arch slide rail place, by described screw, form to embrace lock fixing;
Described range regulator comprises fibre-optical probe sleeve and locating sleeve, on described light source probe sleeve with millimeter unit scales, by described locating sleeve, the fixing probe that can adjust described auxiliary bright meter of fibre-optical probe sleeve diverse location is arrived to the distance between observed object thing, concrete distance reads by the scale on sleeve; The sound end of described auxiliary bright meter is provided with the camera lens screw thread of the high spectrometer of standard, by replacing and the probe of camera lens, apart from the distance of object, adjusts best field angle scope;
Described hollow rotary disk is comprised of the rotating outer disk of ring-type and the inner disc being fixed on base, is carved with 360 calibrated dials of standard on described inner disc, by the pointer in outer disk, quantizes rotational angle; The radius of described outer disk is identical with 1/4 circular arc slide rail radius, guarantees that auxiliary bright meter forms hemispheric inspection surface when 1/4 slip of circular arc slide rail and the rotation of outer disk;
Described base is built into and is had centrosymmetric double-deck well type framework by aluminium section bar, and it is dull and stereotyped that aluminium section bar is laid on described base upper strata.
Described auxiliary bright meter adopt optical fiber light-guiding, detection spectral range 350~2500nm, there is identical flat filed concave grating light splitting, the detector that linear matrix is arranged is surveyed.
On 1/4 described circular arc slide rail, be evenly equipped with and take 5 ° of scales that are interval, the zenith angle that the slidable adjustment auxiliary bright meter of the locating sleeve by the fixing bright meter of spoke on 1/4 circular arc slide rail surveyed.
The plane of described hollow rotary disk is equal with the loading surface in described objective table district.
Described objective table comprises object carrying area, lifting district and translation district and with the cylindric spinner of 360 calibrated dials of standard, described object carrying area is comprised of quartz glass I, quartz glass II, quartz glass support and worktable, realizes the quantification that puts spectrum observation thing and probe field angle number; Described lifting district is comprised of scissor lift platform, straight connection bracket, realizes in observation thing vertical direction and quantizing; Described translation district is comprised of left and right translation stage, front and back translation stage, carries out the quantitative translation of level in spectrum observation process, realizes observation thing horizontal direction quantize in conjunction with described object carrying area;
Connected mode between described object carrying area, lifting district, translation area is as follows: all plane quartz glass I, quartz glass II, quartz glass support, worktable, scissor lift platform, left and right translation stage and above the translation stage of front and back and all require flat surface below, and these parts planar horizontal are placed, and its center of gravity is on a line of vertical and horizontal face; Quartz glass I, quartz glass II level insert in two upper and lower quartz glass grooves of quartz glass support, and quartz glass I is upper, quartz glass II under; Four jiaos of vertical connections bottom straight four cantilever tip of connection bracket and object carrying area afterwards, above the translation stage of described left and right four jiaos with four vertical being connected of support bottom of straight connection bracket; On scissor lift platform, end face is connected with worktable bottom surface is parallel, with parallel above the translation stage of left and right; Below the translation stage of left and right, with parallel connection above the translation stage of front and back, but be mutually vertical at left and right translation stage and front and back translation stage axis; Described spinner is arranged on the upper surface of the described left and right translation stage in described translation district, in the rotary course of described spinner, rotates separated with fibre-optical probe.
Described structure part object carrying area, comprises following:
(1) quartz glass I: square thickness is homogeneous very, perspectivity is good, does not require the quartz glass of other high light attributes; At quartz glass I upper surface, be equipped with standard grid, outstanding center; From overlooking direction of objective table district, utilize the standard grid of quartz glass I upper surface to see through quartz glass II to observing thing carry out the quantification of spectrum observation face, and definite spectrum sample point position;
(2) quartz glass II: square thickness is homogeneous very, can not be lower than 99% quartz glass in 350nm-2500nm band of light transmissivity; The principal plane of quartz glass II and worktable fixed spectrum observation thing, also can realize the observation thing surface that flattens film-form by the vertical travelling table of scissor lift platform;
(3) quartz glass support: be the rectangular quartz glass support of housing rectangle and inside casing, deeply wash the quartz glass of two horizontal directions inlay pickup groove at inwall, objective table district faces long near-end and washes, is convenient to quartz glass I and takes out during observation spectrum; Near-end respectively has two lock-screws up and down, fixedly quartz glass I and quartz glass II when definite spectrum sample point and observation spectrum;
(4) worktable: being the platform that puts spectrum observation thing, is the square direct-connected backing thickness homogeneous that connects, and level connection joint is at lifting table top; The surface of worktable is, by one deck, reflection of light rate is less than to 0.5% film wrapped; Face the height pointer that vertical direction is installed below worktable near-end left end, and with graduated support, quantizing the vertical height of observation thing and the pressing degree of film observation thing in straight connection bracket.
Lifting district in described structure part lifting district, comprises following:
1) scissor lift platform: be connected vertical mobile observation thing with worktable;
2) straight connection bracket: be object carrying area and four vertical connection brackets in translation district, a scale that is marked with standard unit on the left of facing wherein, can quantize the height of vertical direction.
Lifting table district in described structure part translation district, comprises following:
1. left and right translation stage: material is the load-carrying single shaft translation stage that stainless steel can be faced left and right translation.Face at translation stage and lean to one side to record translation distance, in conjunction with object carrying area, observation thing surface level left and right is quantized.
2. translation stage before and after: material is the load-carrying single shaft translation stage of translation before and after stainless steel can be faced.Face at translation stage and lean to one side to record translation distance, in conjunction with object carrying area, observation thing surface level front and back are quantized.
Described indoor high spectrum BRDF measures system except the camera lens of light source region and the glass in objective table district, and described regional surface all needs surface oxidation blackout.
The invention has the beneficial effects as follows: significantly increased the spoke brightness conditions of indoor high spectrum BRDF, eliminated shade and improved measurement result, improved measuring accuracy; The range regulator of spectral radiance has increased the elasticity of indoor high spectrum BRDF measurement range; The rotatory that increases objective table can be introduced the position angle feature of BRDF light source, increases the integrality that BRDF measures.
Accompanying drawing explanation
Fig. 1 is one-piece construction figure of the present invention
Fig. 2 is light source region of the present invention front elevation
Fig. 3 is described light source region side view of the present invention
Fig. 4 is hollow disk schematic diagram of the present invention
Fig. 5 is quadrant arc schematic diagram of the present invention
Fig. 6 is the structural representation in objective table of the present invention district
Fig. 7 is the front elevation of base of the present invention
Fig. 8 is that the side of base of the present invention is attempted
Embodiment
Below in conjunction with accompanying drawing, further illustrate the present invention
With reference to accompanying drawing:
Indoor high spectrum BRDF of the present invention measures system, and described system comprises the base 4 of two cover light source region 1, the auxiliary bright meter regulatory region 2 of high spectrum, objective table district 3 and horizontal positioned; Described light source region 1 comprises light source 11, light source roll adjustment valve 12, light source pole 13 and semi arch slide rail 14, and described light source 11 is hinged with the center of circle of semi arch slide rail 14 that is fixed on base 4 sides by described light source pole 13; The auxiliary bright meter regulatory region 2 of described high spectrum comprises auxiliary bright meter 21, range regulator 22,1/4 circular arc slide rail 23 and hollow rotary disk 24, and described auxiliary bright meter 21 is connected with described hollow rotary disk 24 by 1/4 circular arc slide rail 23; Described objective table district 3 is placed on described base 4 centers, and the center of gravity in described objective table district 3 and described base 4 centers of gravity on same vertical line, the hollow rotary disk 14 described in described base 4 centers are fixing; Described light source 11 optical axises point to the center of circle of hollow rotary disk 14 all the time; Described light source 11 all switches on power with described auxiliary bright meter 21;
Described light source 11 comprises the lamp socket of halogen lamp, the collimation lens barrel being connected with lamp socket is set, lamp socket and collimation lens barrel junction have light hole, in collimation lens barrel, be provided with aperture adjustable diaphragm, collimation lens barrel light-emitting window place is provided with straight mirror, adjustable diaphragm position, described aperture overlaps with the focal plane of collimating mirror, and the emergent light of described halogen lamp is sentenced parallel light emergence from collimation lens barrel light-emitting window after the aperture adjustable diaphragm in collimation lens barrel and collimating mirror;
Described light source pole 13 comprises cross support arm 131 and longitudinal girt 132, described cross support arm 131 one end and described vertical connection of light source 11, the other end and described vertical connection of longitudinal girt 132; 5 ° of quantifications of the hinged unit in the center of circle of the other end of described longitudinal girt 132 and described semi arch slide rail 14 are rotated, guarantee that the optical axis of light source 11 is through hollow disk 24 center, and armful lock consisting of described screw at described semi arch slide rail 14 places is fixing;
Described range regulator 22 comprises fibre-optical probe sleeve 221 and locating sleeve 222, on described light source probe sleeve 221 with millimeter unit scales, the fixing probe that can adjust described auxiliary bright meter 21 by 222 pairs of fibre-optical probe sleeve 221 diverse locations of described locating sleeve arrives the distance between observed object thing, and concrete distance reads by the scale on sleeve 221; The sound end of described auxiliary bright meter 21 is provided with the camera lens screw thread of the high spectrometer of standard, by replacing and the probe of camera lens, apart from the distance of object, adjusts best field angle scope;
Described hollow rotary disk 24 is comprised of with the inner disc 242 being fixed on base 4 the rotating outer disk 241 of ring-type, is carved with 360 calibrated dials of standard on described inner disc 242, by the pointer in outer disk 241, quantizes rotational angle; The radius of described outer disk 241 is identical with 1/4 circular arc slide rail 23 radiuses, guarantees that auxiliary bright meter 21 forms hemispheric inspection surface when the slip of 1/4 circular arc slide rail 23 and the rotation of outer disk 241;
Described base 4 is built into and is had centrosymmetric double-deck well type framework by aluminium section bar, and it is dull and stereotyped that aluminium section bar is laid on described base 4 upper stratas.
Described auxiliary bright meter 21 adopt optical fiber light-guidings, detection spectral range 350~2500nm, there is identical flat filed concave grating light splitting, the detector that linear matrix is arranged is surveyed.
On 1/4 described circular arc slide rail 23, be evenly equipped with and take 5 ° of scales that are interval, the zenith angle that the slidable adjustment auxiliary bright meter 21 of the locating sleeve 222 by the fixing bright meter 21 of spoke on 1/4 circular arc surveyed.
The plane of described hollow rotary disk 24 is equal with the loading surface in described objective table district 3.
Described objective table district 3 comprises 31, lifting district 32He translation district, object carrying area 33 and with the cylindric spinner 34 of 360 calibrated dials of standard, described object carrying area 31 is comprised of quartz glass I311, quartz glass II312, quartz glass support 313 and worktable 314, realizes the quantification that puts spectrum observation thing and probe field angle number; Described lifting district 32 is comprised of scissor lift platform 321, straight connection bracket 322, realizes in observation thing vertical direction and quantizing; Described translation district 33 forms 332 by left and right translation stage 331, front and back translation stage, carries out the quantitative translation of level in spectrum observation process, realizes observation thing horizontal direction quantize in conjunction with described object carrying area 31;
Connected mode between described 33 regions, 31, lifting district 32, translation district, object carrying area is as follows: all plane quartz glass I311, quartz glass II312, quartz glass support 313, worktable 314, scissor lift platform 321, left and right translation stage 331 and front and back translation stage 332 are above and all require flat surface below, and these parts planar horizontal are placed, and its center of gravity is on a line of vertical and horizontal face; Quartz glass I311, quartz glass II312 level insert in two upper and lower quartz glass grooves of quartz glass support 313, and quartz glass I311 is upper, quartz glass II312 under; Straight 322 4 cantilever tip of connection bracket and four jiaos of vertical connections of 31 bottom, object carrying area afterwards, above described left and right translation stage 331 four jiaos with 322 4 vertical being connected of support bottom of straight connection bracket; End face and parallel being connected of worktable 314 bottom surfaces on scissor lift platform 321, parallel above with left and right translation stage 331; Left and right translation stage 331 below with the 332 parallel connections above of front and back translation stage, but be mutually vertical at left and right translation stage 331 and front and back translation stage 332 axis; Described spinner 34 is arranged on the upper surface of the described left and right translation stage 331 in described translation district 33, in the rotary course of described spinner 34, rotates separated with fibre-optical probe.
Described structure part object carrying area, comprises following:
(1) quartz glass I311: square thickness is homogeneous very, perspectivity is good, does not require the quartz glass of other high light attributes; At quartz glass I311 upper surface, be equipped with standard grid, outstanding center; From overlooking direction of objective table district 3, utilize the standard grid of quartz glass I upper surface to see through quartz glass II312 to observing thing carry out the quantification of spectrum observation face, and definite spectrum sample point position;
(2) quartz glass II312: square thickness is homogeneous very, can not be lower than 99% quartz glass in 350nm-2500nm band of light transmissivity; The principal plane of quartz glass II312 and worktable 314 fixed spectrum observation things, also can realize the observation thing surface that flattens film-form by the vertical travelling table 314 of scissor lift platform 321;
(3) quartz glass support 313: be the rectangular quartz glass support of housing rectangle and inside casing, at inwall, deeply wash the quartz glass of two horizontal directions and inlay pickup groove, objective table district 3 faces long near-end and washes, and is convenient to quartz glass I311 and takes out during observation spectrum; Near-end respectively has two lock-screws up and down, fixedly quartz glass I311 and quartz glass II312 when definite spectrum sample point and observation spectrum;
(4) worktable 314: being the platform that puts spectrum observation thing, is the square direct-connected backing thickness homogeneous that connects, and level connection joint is at lifting table top; The surface of worktable 314 is, by one deck, reflection of light rate is less than to 0.5% film wrapped; Face the height pointer that vertical direction is installed below worktable 314 near-end left ends, and with graduated support, quantizing the vertical height of observation thing and the pressing degree of film observation thing in straight connection bracket 322.
Lifting district 32 in described structure part lifting district, comprises following:
1) scissor lift platform 321: be connected vertical mobile observation thing with worktable 314;
2) straight connection bracket 322: be four vertical connection brackets in 31Yu translation district, object carrying area 32, wherein at a scale that is marked with standard unit facing left side, can quantize the height of vertical direction.
Lifting table district 33 in described structure part translation district, comprises following:
1. left and right translation stage 331: material is the load-carrying single shaft translation stage that stainless steel can be faced left and right translation.Face at translation stage and lean to one side to record translation distance, in conjunction with object carrying area, observation thing surface level left and right is quantized.
2. translation stage 332 before and after: material is the load-carrying single shaft translation stage of translation before and after stainless steel can be faced.Face at translation stage and lean to one side to record translation distance, in conjunction with object carrying area, observation thing surface level front and back are quantized.
Described indoor high spectrum BRDF measures system except the camera lens of light source region 1 and the glass in objective table district 3, and described regional surface all needs surface oxidation blackout.
Content described in this instructions embodiment is only enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention is also and in those skilled in the art, according to the present invention, conceive the equivalent technologies means that can expect.

Claims (8)

1. indoor high spectrum BRDF measures system, it is characterized in that: described system comprises the base of light source region, high spectral radiance luminance meter regulatory region, objective table district and horizontal positioned; Described light source region comprises light source, light source roll adjustment valve, light source pole and semi arch slide rail, and described light source is hinged with the center of circle of semi arch slide rail that is fixed on base side by described light source pole; Described high spectral radiance luminance meter regulatory region comprises radiance meter, range regulator, 1/4 circular arc slide rail and hollow rotary disk, and described radiance meter is connected with described hollow rotary disk by 1/4 circular arc slide rail; Described objective table district is placed on described base center, and the center of gravity in described objective table district and described base center of gravity on same vertical line, the hollow rotary disk described in described base center is fixing; Described light source optical axis points to the center of circle of hollow rotary disk all the time; Described light source and described radiance meter all switch on power;
Described light source comprises the lamp socket of halogen lamp, the collimation lens barrel being connected with lamp socket is set, lamp socket and collimation lens barrel junction have light hole, in collimation lens barrel, be provided with aperture adjustable diaphragm, collimation lens barrel light-emitting window place be provided with can make halogen lamp emergent light after collimation lens barrel light-emitting window with the collimating mirror of parallel light emergence, adjustable diaphragm position, described aperture overlaps with the focal plane of collimating mirror, and the emergent light of described halogen lamp is sentenced parallel light emergence from collimation lens barrel light-emitting window after the aperture adjustable diaphragm in collimation lens barrel and collimating mirror;
Described light source pole comprises cross support arm and longitudinal girt, and described cross support arm one end is connected with described light source is vertical, the other end and described vertical connection of longitudinal girt; The center of circle of the other end of described longitudinal girt and described semi arch slide rail is hinged, and quantizes to rotate with 5 °Wei units, guarantees that the optical axis of light source is through the center of hollow rotary disk, and at described semi arch slide rail place, by screw, form to embrace lock fixing;
Described range regulator comprises fibre-optical probe sleeve and locating sleeve, on described fibre-optical probe sleeve with millimeter unit scales, by described locating sleeve, the fixing probe that can adjust described radiance meter of fibre-optical probe sleeve diverse location is arrived to the distance between observed object thing, concrete distance reads by the scale on sleeve; The sound end of described radiance meter is provided with the camera lens screw thread of the high spectrometer of standard, by replacing and the probe of camera lens, apart from the distance of object, adjusts best field angle scope;
Described hollow rotary disk is comprised of the rotating outer disk of ring-type and the inner disc being fixed on base, is carved with 360 calibrated dials of standard on described inner disc, by the pointer in outer disk, quantizes rotational angle; The radius of described outer disk is identical with 1/4 circular arc slide rail radius, guarantees that radiance meter forms hemispheric inspection surface when 1/4 slip of circular arc slide rail and the rotation of outer disk;
Described base is built into and is had centrosymmetric double-deck well type framework by aluminium section bar, and it is dull and stereotyped that aluminium section bar is laid on described base upper strata.
2. indoor high spectrum BRDF as claimed in claim 1 measures system, it is characterized in that: described radiance meter adopt optical fiber light-guiding, detection spectral range 350~2500nm, there is identical flat filed concave grating light splitting, the detector that linear matrix is arranged is surveyed.
3. indoor high spectrum BRDF as claimed in claim 2 measures system, it is characterized in that: on 1/4 described circular arc slide rail, be evenly distributed with and take 5 ° of scales that are interval, the zenith angle that the slidable adjustment radiance meter of the locating sleeve by fixing radiance meter on 1/4 circular arc slide rail surveyed.
4. indoor high spectrum BRDF as claimed in claim 3 measures system, it is characterized in that: the plane of described hollow rotary disk is equal with the loading surface in described objective table district.
5. indoor high spectrum BRDF as claimed in claim 4 measures system, it is characterized in that: described objective table district comprises object carrying area, lifting district and translation district and with the cylindric spinner of 360 calibrated dials of standard, described object carrying area is comprised of quartz glass I, quartz glass II, quartz glass support and worktable, realizes the quantification that puts spectrum observation thing and probe field angle number; Described lifting district is comprised of scissor lift platform, straight connection bracket, realizes in observation thing vertical direction and quantizing; Described translation district is comprised of left and right translation stage, front and back translation stage, carries out the quantitative translation of level in spectrum observation process, realizes observation thing horizontal direction quantize in conjunction with described object carrying area;
Connected mode between described object carrying area, lifting district, translation area is as follows: all plane quartz glass I, quartz glass II, quartz glass support, worktable, scissor lift platform, left and right translation stage and above the translation stage of front and back and all require flat surface below, and these parts planar horizontal are placed, and its center of gravity is on a line perpendicular to surface level; Quartz glass I, quartz glass II level are inserted in two upper and lower quartz glass grooves of quartz glass support, and quartz glass I is upper, quartz glass II under; Four jiaos of vertical connections bottom straight four cantilever tip of connection bracket and object carrying area afterwards, above the translation stage of described left and right four jiaos with four vertical being connected of support bottom of straight connection bracket; On scissor lift platform, end face is connected with worktable bottom surface is parallel, with parallel above the translation stage of left and right; Below the translation stage of left and right, with parallel connection above the translation stage of front and back, but be mutually vertical at left and right translation stage and front and back translation stage axis; Described spinner is arranged on the upper surface of the described left and right translation stage in described translation district.
6. indoor high spectrum BRDF as claimed in claim 5 measures system, it is characterized in that: build part object carrying area, comprise following:
(1) quartz glass I: square, thickness is homogeneous very, perspectivity is good; At quartz glass I upper surface, be equipped with standard grid, outstanding center; From overlooking direction of objective table district, utilize the standard grid of quartz glass I upper surface to see through quartz glass II to observing thing carry out the quantification of spectrum observation face, and definite spectrum sample point position;
(2) quartz glass II: square thickness is homogeneous very, can not be lower than 99% quartz glass in 350nm-2500nm band of light transmissivity; The principal plane of quartz glass II and worktable fixed spectrum observation thing, also can realize the observation thing surface that flattens film-form by the vertical travelling table of scissor lift platform;
(3) quartz glass support: be the rectangular quartz glass support of housing rectangle and inside casing, the quartz glass that is deeply milled with two horizontal directions at inwall is inlayed pickup groove, it is saturating that Bing objective table district faces long near-end milling, is convenient to quartz glass I and takes out during observation spectrum; Near-end respectively has two lock-screws up and down, fixedly quartz glass I and quartz glass II when definite spectrum sample point and observation spectrum;
(4) worktable: being the platform that puts spectrum observation thing, is square straight connection bracket, thickness homogeneous, level connection joint is at lifting table top; The surface of worktable is, by one deck, reflection of light rate is less than to 0.5% film wrapped; Face the height pointer that vertical direction is installed below worktable near-end left end, and with graduated support, quantizing the vertical height of observation thing and the pressing degree of film observation thing in straight connection bracket.
7. indoor high spectrum BRDF as claimed in claim 6 measures system, it is characterized in that: described structure part lifting district, comprises following:
1) scissor lift platform: be connected vertical mobile observation thing with worktable;
2) straight connection bracket: be object carrying area and four vertical connection brackets in translation district, a scale that is marked with standard unit on the left of facing wherein, can quantize the height of vertical direction.
8. indoor high spectrum BRDF as claimed in claim 7 measures system, it is characterized in that: described structure part translation district, comprises following:
1. left and right translation stage: material is stainless steel, can face the load-carrying single shaft translation stage of left and right translation; Face translation stage and lean to one side, record translation distance, and in conjunction with object carrying area, observation thing surface level left and right is quantized;
2. translation stage before and after: material is stainless steel, the load-carrying single shaft translation stage of translation before and after can facing; Face translation stage and lean to one side, record translation distance, and in conjunction with object carrying area, observation thing surface level front and back are quantized.
CN201210052209.3A 2012-03-01 2012-03-01 Indoor hyperspectral bidirectional reflectance distribution function (BRDF) determining system CN102590150B (en)

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