{"id":4569,"date":"2026-11-11T08:00:00","date_gmt":"2026-11-11T08:00:00","guid":{"rendered":"https:\/\/onpowbutton.com\/news\/illuminated-push-button-lens-transmittance\/"},"modified":"2026-11-10T04:40:40","modified_gmt":"2026-11-10T04:40:40","slug":"illuminated-push-button-lens-transmittance","status":"publish","type":"post","link":"https:\/\/onpowbutton.com\/ja\/news\/illuminated-push-button-lens-transmittance\/","title":{"rendered":"\u7167\u660e\u4ed8\u304d\u30d7\u30c3\u30b7\u30e5\u30dc\u30bf\u30f3\u30ec\u30f3\u30ba\u306e\u900f\u904e\u7387\uff1a\u6750\u6599\u8a3c\u62e0\u3092\u8aad\u3080"},"content":{"rendered":"<style>.onpow-article{font-size:17px;line-height:1.75;overflow-wrap:anywhere}.onpow-article img{max-width:100%;height:auto}.onpow-article figure{margin:28px 0}.onpow-article figcaption{font-size:14px;color:#555}.onpow-table-scroll{max-width:100%;overflow-x:auto}.onpow-article table{border-collapse:collapse;min-width:640px;width:100%}.onpow-article th,.onpow-article td{padding:12px;border:1px solid #ddd;text-align:left}.onpow-article th{background:#f1f4f7}.onpow-video{position:relative;aspect-ratio:16\/9;width:100%}.onpow-video iframe{position:absolute;width:100%;height:100%;border:0}<\/style>\n<article class=\"onpow-article\">\n<nav aria-label=\"Contents\"><strong>Contents<\/strong><\/p>\n<ul>\n<li><a href=\"#section-1\">Start with the optical question you need answered<\/a><\/li>\n<li><a href=\"#section-2\">Check the scope of the named transmittance method<\/a><\/li>\n<li><a href=\"#section-3\">Understand what total transmission leaves unresolved<\/a><\/li>\n<li><a href=\"#section-4\">Match the specimen to the actual lens configuration<\/a><\/li>\n<li><a href=\"#section-5\">Use a document comparison table<\/a><\/li>\n<li><a href=\"#section-6\">Compare reports without hiding material differences<\/a><\/li>\n<li><a href=\"#section-7\">Validate finished indicator visibility separately<\/a><\/li>\n<li><a href=\"#section-8\">Prepare an effective enquiry and acceptance record<\/a><\/li>\n<li><a href=\"#section-9\">Frequently asked questions<\/a><\/li>\n<\/ul>\n<\/nav>\n<p>Illuminated push button lens transmittance evidence needs to distinguish a transparent material measurement from the visibility of a completed indicator. A transmittance percentage alone cannot tell a buyer whether a colored button will be easy to recognize on a bright control panel. First identify the specimen, optical method and conditions behind the number. Then establish which separate checks describe the actual LED, lens, legend and installation. This guide helps procurement and engineering teams review optical documents while avoiding unsupported assumptions about a finished product. No transmittance value or brightness rating is claimed for the ONPOW examples shown here.<\/p>\n<h2 id=\"section-1\">Start with the optical question you need answered<\/h2>\n<p>A materials engineer might want to compare transparent plastic plaques under a defined laboratory method. A panel designer might need to confirm that an illuminated symbol is distinguishable from its background at an operator&#8217;s viewing position. Those are related questions, but a document answering the first does not automatically settle the second.<\/p>\n<p>Write the intended acceptance concern before requesting a report. Useful descriptions include comparing a specified transparent material, evaluating a colored lens sample against an approved reference, or checking the legibility of a completed illuminated assembly in its intended setting. Avoid asking for the \u201cbest transmittance\u201d without saying what the optical component must do.<\/p>\n<p>Keep the acceptance object consistent. A raw material sheet, a molded lens and a powered switch assembly are different test objects. If the submitted result concerns a sheet while the requirement concerns a finished lens, document the additional evidence needed to connect them. The difference should remain visible throughout the purchasing record.<\/p>\n<h2 id=\"section-2\">Check the scope of the named transmittance method<\/h2>\n<p>The <a href=\"https:\/\/knowledge.bsigroup.com\/products\/plastics-determination-of-the-total-luminous-transmittance-of-transparent-materials-double-beam-instrument-1\" rel=\"noopener\" target=\"_blank\">BSI scope for ISO 13468-2<\/a> describes total luminous transmittance testing using a double-beam instrument for planar, transparent and substantially colorless plastic materials. That scope matters when a supplier submits evidence for a strongly colored, diffusing, textured or curved optical part. Do not assume that a familiar standard number establishes suitability for a specimen outside the stated scope.<\/p>\n<p>Record the standard part and instrument method the report actually uses. A reviewer should not fill a missing method field with a familiar designation or assume that all optical reports use the same measurement arrangement. Ask the issuing laboratory to identify its procedure and explain how that procedure applies to the specimen submitted.<\/p>\n<p>Use the public scope to screen relevance, then consult the laboratory and the applicable full procedure for operational details. This article is not a substitute for that procedure. Where the specimen falls outside a standard&#8217;s scope, ask for an appropriate alternative method or a clearly explained adapted measurement, with limitations preserved in the final decision.<\/p>\n<figure><img decoding=\"async\" alt=\"ONPOW LAS1-AF-11\/ \u2014 original manufacturer product photograph\" loading=\"lazy\" src=\"https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/11\/illuminated-push-button-lens-transmittance-body1-daily20261110.jpg\"\/><figcaption>ONPOW LAS1-AF-11\/. Product identification example only; this photograph does not establish hardness, optical, thermal, electrical or environmental performance or certification. Confirm the exact ordered configuration and tested equipment scope separately.<\/figcaption><\/figure>\n<h2 id=\"section-3\">Understand what total transmission leaves unresolved<\/h2>\n<p>Transmission concerns light passing through a material. Reflection and absorption also influence the light available after it meets a surface. The <a href=\"https:\/\/www.bozemanscience.com\/ap-phys-118-light-switching-mediums\" rel=\"noopener\" target=\"_blank\">Bozeman Science explanation of these optical interactions<\/a> provides useful conceptual background. A colored material can interact differently with different wavelengths, so the same appearance under one source does not establish its behavior under every source.<\/p>\n<p>For procurement, distinguish overall transmitted light from the distribution and appearance of that light. A lens can transmit light while spreading it differently. A legend can remain difficult to distinguish if its contrast with the illuminated background is poor. A material percentage is therefore only part of the evidence relevant to a human operator reading a completed control.<\/p>\n<p>Avoid equating transmission with an LED electrical rating. The supplied voltage, source output, optical arrangement and finished viewing geometry belong to the assembly evaluation. Neither a transparent coupon result nor a photograph establishes those electrical or photometric characteristics. Request the relevant assembly information rather than deriving it from the material test.<\/p>\n<h2 id=\"section-4\">Match the specimen to the actual lens configuration<\/h2>\n<p>Record material identification, color, thickness, surface finish and specimen preparation. Ask whether the report concerns a supplier&#8217;s standard plaque, a sample prepared for the project or a piece taken from the molded part. These descriptions help a reviewer understand what the result can reasonably support without assuming that every item made from the same general polymer is optically identical.<\/p>\n<p>Use the <a href=\"https:\/\/onpowbutton.com\/16mmsquare1no1nc-product\/\">ONPOW LAS1-A square product page<\/a> to identify a real configuration when requesting information. The product images in this article are identification examples. They do not establish the composition of the lens, its measured transmittance or the availability of a particular optical report for every order option.<\/p>\n<p>If the purchased configuration includes a legend, diffuser or additional optical element, include it in the enquiry. A report on an unprinted clear plaque does not describe how a finished legend will appear. Similarly, a different lens color or finish may require its own documented relationship to the evidence already supplied. Ask for clarification before approving a substitution.<\/p>\n<h2 id=\"section-5\">Use a document comparison table<\/h2>\n<p>The following table organizes a purchasing review. It provides qualitative actions rather than optical acceptance limits. The scope distinction comes from the standards linked above; the workflow is a suggested way of keeping evidence and open questions visible.<\/p>\n<div class=\"onpow-table-scroll\">\n<table>\n<thead>\n<tr>\n<th>Purchasing question<\/th>\n<th>Useful document detail<\/th>\n<th>Separate follow-up when necessary<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>What was measured?<\/td>\n<td>Material plaque, finished lens or powered assembly<\/td>\n<td>Obtain evidence for the actual acceptance object<\/td>\n<\/tr>\n<tr>\n<td>Which method was used?<\/td>\n<td>Standard part, edition and instrument approach<\/td>\n<td>Ask whether the specimen fits the stated scope<\/td>\n<\/tr>\n<tr>\n<td>Is the sample representative?<\/td>\n<td>Material, color, thickness, finish and sample identifier<\/td>\n<td>Request a connection to the ordered lens<\/td>\n<\/tr>\n<tr>\n<td>What optical result is reported?<\/td>\n<td>Quantity, conditions and result presentation<\/td>\n<td>Avoid substituting brightness or visibility claims<\/td>\n<\/tr>\n<tr>\n<td>Is a legend included?<\/td>\n<td>Printed or engraved configuration and reference sample<\/td>\n<td>Evaluate the finished symbol and background together<\/td>\n<\/tr>\n<tr>\n<td>Does the operator see it clearly?<\/td>\n<td>Defined viewing and ambient conditions for the assembly<\/td>\n<td>Review application visibility separately<\/td>\n<\/tr>\n<tr>\n<td>What happens after a change?<\/td>\n<td>Revision record for lens, source and optical elements<\/td>\n<td>Reassess the affected evidence<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<figure><img decoding=\"async\" alt=\"ONPOW LAS1-AJ-11\/ \u2014 original manufacturer product photograph\" loading=\"lazy\" src=\"https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/11\/illuminated-push-button-lens-transmittance-body2-daily20261110.jpg\"\/><figcaption>ONPOW LAS1-AJ-11\/. Product identification example only; this photograph does not establish hardness, optical, thermal, electrical or environmental performance or certification. Confirm the exact ordered configuration and tested equipment scope separately.<\/figcaption><\/figure>\n<h2 id=\"section-6\">Compare reports without hiding material differences<\/h2>\n<p>Consider an illustrative purchasing comparison. One report concerns a flat, substantially colorless plaque of a stated thickness. Another concerns a colored curved cap measured using an adapted setup. The percentages should not be ranked as if both documents describe the same test object and method. Ask the responsible reviewer whether a valid comparison can be established, or whether a common specimen and method are needed.<\/p>\n<p>Preserve the difference between \u201cnot comparable\u201d and \u201cunacceptable.\u201d The second report could be useful for a specific project even when it cannot be compared directly with the first. The important point is to state the intended use of the data and avoid presenting a method difference as a demonstrated product deficiency.<\/p>\n<p>If a marketing sheet and a laboratory report disagree, request the source and revision of each claim. Do not copy the preferred percentage into a combined specification without resolving the discrepancy. A dated clarification that identifies specimen and conditions is more useful than an unsupported average of two numbers.<\/p>\n<h2 id=\"section-7\">Validate finished indicator visibility separately<\/h2>\n<p>For the finished assembly, agree which operating state, source configuration, legend and ambient setting need evaluation. The relevant question may be recognition from an oblique position, contrast against the unlit state or readability in the expected lighting. Define these conditions with the equipment team rather than inventing one universal brightness threshold for all control panels.<\/p>\n<p>Photographs can document an agreed sample but are not a substitute for controlled optical evidence. Camera exposure, white balance and the display used to view an image can change apparent brightness and color. Use photographs to identify configurations and communicate observations, with the measurement or sample-acceptance basis recorded separately.<\/p>\n<p>Environmental and aging requirements remain separate as well. A fresh specimen&#8217;s transmission result does not demonstrate long-term retention of an assembled indicator&#8217;s visibility. Consult the <a href=\"https:\/\/onpowbutton.com\/news\/push-button-material-thermal-endurance\/\">material thermal endurance guide<\/a> when long-term material evidence is part of the requirement, while recognizing that thermal endurance and optical transmission answer different questions.<\/p>\n<h2 id=\"section-8\">Prepare an effective enquiry and acceptance record<\/h2>\n<p>The broader <a href=\"https:\/\/onpowbutton.com\/news\/push-button-laboratory-accreditation-scope\/\">laboratory scope review guide<\/a> helps organize who measured what and under which declared scope. For optical evidence, include the named specimen and measurement method in that record. The identity of the laboratory alone cannot connect an unidentified plaque to the actual lens on a purchase order.<\/p>\n<p>Related material information can help investigate a substitution without proving optical equivalence. The <a href=\"https:\/\/onpowbutton.com\/news\/push-button-plastic-water-absorption\/\">plastic water absorption guide<\/a> explains a separate material traceability check. A water absorption result should not be used to infer transparency, color or lens composition, but keeping the records together can reveal whether reports refer to different samples.<\/p>\n<p>When contacting ONPOW, provide the exact product configuration, lens color, legend needs, intended viewing environment and the evidence your project requires. Ask which information is available for that configuration and identify any application evaluation still needed. At acceptance, close the material measurement and finished visibility requirements separately, retaining unresolved questions instead of turning a material percentage into an unconditional approval.<\/p>\n<h2 id=\"section-9\">Frequently asked questions<\/h2>\n<h3>Does higher transmittance always mean a better illuminated button?<\/h3>\n<p>No. A finished indicator must meet its intended visibility and identification needs. Lens color, light distribution, legend contrast, source configuration and ambient conditions can matter alongside transmitted light. Review the actual assembly requirement rather than ranking products by an isolated percentage.<\/p>\n<h3>Can a colorless flat-plaque report certify a colored curved lens?<\/h3>\n<p>It does not automatically establish coverage of that lens. Check the method&#8217;s scope, the specimen identity and the documented relationship to the ordered part. Ask the laboratory or responsible reviewer what additional evidence is needed.<\/p>\n<h3>Is transmittance the same as brightness?<\/h3>\n<p>No. Transmittance describes light passing through a specimen under a defined measurement basis. The brightness or visibility of an assembled indicator depends on additional optical, electrical and viewing conditions that need their own evidence.<\/p>\n<h3>Can I accept a new lens color using the old report?<\/h3>\n<p>Only after reviewing whether the existing evidence adequately covers the change for your specification. Keep the color and sample identifiers explicit, request the supplier&#8217;s explanation and retain any remaining assembly visibility checks in the acceptance record.<\/p>\n<h2 id=\"learning-video\">Further learning<\/h2>\n<p>Bozeman Science explains reflection, absorption and transmission of light. This supports the optical concepts only; it does not measure ONPOW lenses or establish indicator visibility.<\/p>\n<div class=\"onpow-video\"><iframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/DOsro2kGjGc\" title=\"Light Absorption, Reflection, and Transmission\" loading=\"lazy\" allow=\"encrypted-media; picture-in-picture\" allowfullscreen><\/iframe><\/div>\n<p><a rel=\"noopener\" href=\"https:\/\/www.youtube.com\/watch?v=DOsro2kGjGc\" target=\"_blank\">Light Absorption, Reflection, and Transmission \u2014 Bozeman Science<\/a><\/p>\n<\/article>\n<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Does higher transmittance always mean a better illuminated button?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. A finished indicator must meet its intended visibility and identification needs. 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Separate transparent material measurements from colored lens appearance and finished indicator visibility.","_links":{"self":[{"href":"https:\/\/onpowbutton.com\/ja\/wp-json\/wp\/v2\/posts\/4569","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onpowbutton.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/onpowbutton.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/onpowbutton.com\/ja\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/onpowbutton.com\/ja\/wp-json\/wp\/v2\/comments?post=4569"}],"version-history":[{"count":1,"href":"https:\/\/onpowbutton.com\/ja\/wp-json\/wp\/v2\/posts\/4569\/revisions"}],"predecessor-version":[{"id":4570,"href":"https:\/\/onpowbutton.com\/ja\/wp-json\/wp\/v2\/posts\/4569\/revisions\/4570"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/onpowbutton.com\/ja\/wp-json\/wp\/v2\/media\/4566"}],"wp:attachment":[{"href":"https:\/\/onpowbutton.com\/ja\/wp-json\/wp\/v2\/media?parent=4569"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/onpowbutton.com\/ja\/wp-json\/wp\/v2\/categories?post=4569"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/onpowbutton.com\/ja\/wp-json\/wp\/v2\/tags?post=4569"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}